4-CHANNEL AMPLIFIERS
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INSTALLATIO N & O PERATIO N
MANUAL
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Dear Customer,
Congratulations on your purchase of the world's finest brand of car audio
amplifiers. At Rockford Fosgate we are committed to musical reproduction at its
best, and we are pleased you chose our product. Through years of engineering
expertise, hand craftsmanship and critical testing procedures, we have created a
wide range of products that reproduce music with all the clarity and richness you
deserve.
For maximum performance we recommend you have your new Rockford Fosgate
product installed by an Authorized Rockford Fosgate Dealer, as we provide
specialized training through Rockford Technical Training Institute (RTTI). Please
read your warranty and retain your receipt and original carton for possible future
use.
Toadd thefinishingtouch toyour new Rockford Fosgateimageorder your Rockford
accessories, which include everything from T-shirts and jackets to hats and
sunglasses.
To get a free brochure on Rockford Fosgate products and Rockford accessories, in
the U.S. call 602-967-3565 or FAX 602-967-8132. For all other countries, call
+001-602-967-3565 or FAX +001-602-967-8132.
PRACTICE SAFE SOUND™
CONTINUOUS EXPOSURE TO SOUND PRESSURE LEVELS
OVER100dBMAYCAUSEPERMANENTHEARING LOSS.HIGH
POWERED AUTO SOUND SYSTEMS MAY PRODUCE SOUND
PRESSURE LEVELS WELL OVER 130dB. USE COMMON SENSE
AND PRACTICE SAFE SOUND.
If, after readin g your m an ual, you still h ave question s regardin g th is
product, we recom m en d th at you see your Rockford Fosgate dealer. If you
n eed furth er assistan ce, you can call us direct at 1-800-795-2385. Be sure to
h ave your serial n um ber, m odel n um ber an d date of purch ase available
wh en you call.
Th e serial n um ber can be foun d on th e outside of th e box. Please record it
in th e space provided below as your perm an en t record. Th is will serve as
verification of your factory warran ty an d m ay becom e useful in recoverin g
your am plifier if it is ever stolen .
Serial Num ber: ____________________
Model Num ber: ____________________
TABLE O F CO N TEN TS
Introduction ...................................................................................... 1
Punch 4-Channel Amplifier Accessory Pack ...................................... 1
Rockford Fosgate Accessories............................................................ 2
Technical Design Features ................................................................ 3
Design Features................................................................................. 6
Installation Considerations ................................................................ 8
Mounting Location ............................................................................ 9
Battery and Charging....................................................................... 10
Wiring the System ........................................................................... 10
Using the XCard .............................................................................. 13
Using the Signal Input Switch .......................................................... 14
Basic Connections........................................................................... 15
System Diagrams............................................................................. 22
Troubleshooting .............................................................................. 26
Dynamic Power Measurements ....................................................... 29
160x Specifications ....................................................................... 31
4
240x Specifications ....................................................................... 32
4
Warranty Information ...................................................................... 33
G E T T I N G ST A R T E D
Welcome to Rockford Fosgate! This manual is designed to provide
information for the owner, salesperson and installer. For those of you
who want quick information on how to install this product, please
turn to the Basic Connections in the Installation section of this
manual. Other information can be located by using the Table of
Contents. We, at Rockford Fosgate, have worked very hard to make
sure all the information in this manual is current. But, as we are
constantly finding new ways to improve our product, this information
is subject to change without notice.
I N T R O D U C T I O N
The Punch 160x and 240x are 4-channel amplifiers which can
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deliver 160 watts and 240 watts RMS respectively. Both ampli-
fiers utilize a 2/4-channel input switch to eliminate the need for
signal splitters. A pair of internal XCard crossovers allow the
amplifiers to be configured for use with many popular system
designs without the added cost of external processors. The Punch
160x and 240x are powerful 4-channel amplifiers with inte-
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grated features which are offered at a competitive price.
We strongly recommend you have your Authorized Rockford
Fosgate Dealer install the new Punch amplifier. If you do choose
to install it yourself, please be sure to read the entire manual
before beginning.
P U N C H 4-CHANNEL AM P LI FI ER
AC C ESSO RY P AC K
The accessory pack shipped with the Punch 4-channel amplifier
includes the mounting hardware necessary to secure the amp to
the vehicle as well as attach the end caps.
Installation & Operation Manual
Punch Verification Certificate
(10)Allen Head Screws for speaker and power connectors
(4) Mounting Screws for end caps
(4) Mounting Screws for amplifier
(1) Allen Wrench 7/64"
(1) Allen Wrench 3/32"
(1) ATC In-line Fuseholder (160x )
4
(1) AGU In-line Fuseholder (240x )
4
(1) ATC 30 Amp Fuse (160x )
4
(1) AGU 50 Amp Fuse (240x )
4
– 1 –
RO C KFO RD FO SG AT E AC C ESSO RI ES
The following accessories were designed to enhance the perfor-
mance of the Punch 160x and 240x amplifiers.
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Energy Storage Capacitor
The Punch capacitors are used to provide extra current needed by
amplifiers to reproduce musical transients. The Punch Caps also
have the natural ability to filter AC ripple caused by the alternator,
reducing the chance of noise in the system. The Punch Caps will
maximize both the sound quality and performance that Rockford
Fosgate amplifiers can deliver.
Punch Link (FG-LINK)
The Punch Link is a specially cast heatsink interconnect which
allows you to join any of our current Punch or Punch Power
amplifiers together. While providing additional cooling through
the coupling process, the Punch Link adds the finishing touch by
giving you the look of one awesome amplifier.
XCard
Additional crossover card frequencies are available for special-
ized requirements. You can get the following XCards from your
Authorized Rockford Fosgate Dealer.
XM50
XM70
XM100 = 100Hz
XM150 = 150Hz
XM200 = 200Hz
=
=
50Hz
70Hz
XM275 = 275Hz
XM400 = 400Hz
XM4.5k = 4,500Hz
XM6.5k = 6,500Hz
XM00 = Blank card for
custom crossover
– 2 –
TECH NICAL DESIGN FEATURES
◆ TRANS• ANA (TRANSconductance Active
Nodal Amplifier)
The TRANS• ANA (TRANSconductance Active Nodal Amplifier)
is a circuit that allows the audio signal to pass through the
amplifier at low voltage. The signal is directly level-shifted to the
fixed high voltage rails via a pair of driver transistors. Signal
linearity is assured by an active node formed by the driver
transistors at ultrasonic frequencies. This allows amplifier perfor-
mance similar to trans• nova which is highly stable and linear
while utilizing the advantages of a non-floating power supply.
THE RESULT: An extended frequency bandwidth accurately
supplied to the output stages of the amplifier.
◆ TOPAZ (Tracking Operation Pre-Amplifier Zone)
The TOPAZ (Tracking Operation Pre-Amplifier Zone) circuitry
solves ground loop noise problems common to automotive
amplifier design. This innovative new development allows vastly
improved isolation of the input signal grounds from the power
supply ground of the amplifier. This is accomplished by allowing
the source unit to control the potential “environment” of the
entire input structure or “zone” of the amplifier. This process
improves the noise rejection of the amplifier by 30-40dB – an
astounding 30-100 times better than amplifiers without TOPAZ.
THE RESULT: Elimination of troublesome ground loop noise
between source and amplifier.
– 3 –
◆ DSM (Discrete Surface Mount) Technology
The DSM (Discrete Surface Mount) manufacturing process com-
bines the advantages of both discrete components and integrated
circuitry. Rockford Fosgate is the only American amplifier manu-
facturer to have invested millions into this process. DSM compo-
nents differ from conventional discrete components in three
ways. They are more compact, more rugged, and they efficiently
dissipate generated heat. Using them wherever appropriate al-
lows the advantages associated with discrete circuitry to be
retained while also providing room for both highly advanced
processing features and generous PC board copper paths where
needed. Their short lead-out structures allow maximum audio
performance and highest signal-to-noise ratios to be obtained in
amplifiers of desirable package size without resorting to “ampli-
fier-on-a-chip” shortcuts. These advantages are shown in Figure 1.
Figure 1
Component
Solder
Solder
Surface Mount
Thru-Hole
THE RESULT: Fewer connections, improved reliability, shorter
signal paths, superior signal-to-noise ratio and awesome sonic
performance.
◆ XCard (Internal Crossover)
The Punch and Power amplifiers utilize internal active cross-
overs. These crossovershave manyperformance advantagessuch
as using discrete components for exact frequency adjustments
which are far superior to potentiometers. Additionally, the XCard
can be configured for high-pass, low-pass and full range opera-
tion. With slight modifications, many crossover frequencies and
slope configurations can be achieved.
THE RESULT: Increased system design flexibility with a precise
electronic crossover without the limitations of conventional
potentiometer designs.
– 4 –
◆ RTP (Real Time Protection)
NOMAD (NOn-Multiplying Advanced Decision)
The Punch and Power amplifiers use an analog computer process to
maximize safe output power under all operating conditions. Rock-
ford Fosgate pioneered and developed RTP (Real Time Protection),
a crucial element in the performance edge of our amplifiers. The
innovative NOMAD (NOn-Multiplying Advanced Decision) system
is the most sophisticated version of this technique ever used,
bringing previously unavailable levels of accuracy, stability, tem-
perature immunity and reliability to this critical process. NOMAD
makes advanced decisions based on device voltages to precisely
control the awesome levels of current available in the output
MOSFETs to safe values – but only when absolutely needed.
THE RESULT: Extremely fast protection system that always protects
the amplifier and never degrades the sound.
◆ MOSFET Devices
Rockford Fosgate is one of the few manufacturers in the sound
community to utilize MOSFET devices in both the power supply
and the output stages. MOSFET (Metal Oxide Semiconductor
Field Effect Transistor) devices offer several important inherent
advantages over the 30 year old technology of bi-polar design.
These advantages include: thermal stability, switching speed,
ultra low output impedance and wider bandwidth linearity. In
addition, MOSFETs operate very similar to vacuum tubes in
which they are more linear than bipolar transistors. However,
MOSFETs can deliver the midrange clarity without the limitations
of transient response and high frequency phase shifting normally
associated with tube operation.
THE RESULT: Operational characteristics similar to vacuum
tubes without the performance limitations of tube designs.
– 5 –
DESIGN FEATURES
1. Cast Aluminum Heatsink – The cast aluminum heatsink of the
Punch amplifier dissipates heat generated by the amplifier's
circuitry. The inherent advantage of casting provides a 30%
improvement of cooling over conventional extrusion heatsink
designs.
2. End Caps – Interchangeable end caps conceal the wiring and
input cables, giving the amplifier a clean “stealth” look.
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8
6
8
5
4
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3. Speaker Terminals – The heavy duty, gold-plated terminal block
connectors (+ and –) will accept wire sizes from 8 AWG to 18
AWG. These gold-plated connectors are immune to corrosion
that can cause signal deterioration.
4. Power Terminals – The power and ground connectors on the
Punch amplifier are gold-plated and will accommodate up to 8
AWG wire maximizing the input current capability of the
amplifier.
5. REM Terminal – This spade terminal is used for the auto power/
remote turn-on of the Punch amplifier.
– 6 –
6. RCA Input Jacks – The industry standard RCA jacks provide
easy connections for signal level input. They are gold-plated to
resist the signal degradation caused by corrosion.
7. Signal Input Switch – This switch allows selection of 2-channel
or 4-channel source unit feed.
8. Input Sensitivity Controls – The input level controls are preset
for 500mV which will match the output of most source units.
Theycan be adjusted to match inputlevelsrangingfrom 150mV
to 3V.
9. LED Power Indicator – The LED illuminates when the unit is
turned on.
10. XCard (Internal Crossover) – These built-in crossover cards are
configurable for a multitude of operating frequencies. The
orientation of the card in its socket determines the function of
high-pass, low-pass, or full range operation.
®
A M P LIFIER
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20 Watts x 4 into 4 Ω at 0.05% THD
40 Watts x 4 into 2 Ω at 0.1% THD
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RO CKFO RD CO RP O RATIO N
M ADE IN THE USA
High Pass
Low Pass
Full Range
H P
LP
L P
HP
↕
FULL
2
4
Channel Input
Channel Input
10
XCa rd
1
XCa rd
2
7
– 7 –
IN STALLAT I O N C O N SI D ERAT I O N S
The following is a list of tools you will need for installing the Punch
amplifier:
Allen wrenches 7/64" & 3/32" (included) Voltmeter
Wire strippers
Electric hand drill w/assorted bits
Wire crimpers
Battery post wrench
Wire cutters
Assorted connectors
This section focuses on some of the vehicle considerations for
installing your new Punch amplifier. Checking your battery and
present sound system, as well as pre-planning your system layout and
best wiring routes will save installation time. When deciding how to
lay out your new system, be sure that each component will be easily
accessible for making adjustments.
Before beginninganyinstallation, be sure to follow these simple rules:
1. Be sure to carefully read and understand the instructions before
attempting to install the amplifier.
2. For safety, disconnect the negative lead from the battery prior to
beginning the installation.
3. For easier assembly, we suggest you run all wires prior to
mounting your amplifier in place.
4. Route all of the RCA cables close together and away from any
high current wires.
5. Use high quality connectors for a reliable installation and to
minimize signal or power loss.
6. Think before you drill! Be careful not to cut or drill into gas tanks,
fuel lines, brake or hydraulic lines, vacuum lines or electrical
wiring when working on any vehicle.
7. Never run wires underneath the vehicle. Running the wires
inside the vehicle provides the best protection.
8. Avoid running wires over or through sharp edges. Use rubber or
plastic grommets to protect any wires routed through metal,
especially the firewall.
9. ALWAYS protect the battery and electrical system from damage
with proper fusing. Install the appropriate fuseholder and fuse on
the +12V power wire within 18” (45.7 cm) of the battery terminal.
10. When grounding to the chassis of the vehicle, scrape all paint
from the metal to ensure a good, clean ground connection.
Groundingconnectionsshould be asshortaspossible and always
be connected to metal that is welded to the main body, or chassis,
of the vehicle.
– 8 –
MO UNTING LO CATIO N
The mountinglocation and position ofyouramplifierwillhave a great
effect on its ability to dissipate the heat generated during normal
operation. The design of our cast aluminum heatsink serves to easily
dissipate the heat generated over a wide range of operating condi-
tions. However, to maximize the performance of your amplifier, care
should be taken to ensure adequate ventilation.
Trunk Mounting
Mounting the amplifier vertically on a surface with the fin grooves
running up and down will provide the best cooling of the amplifier.
Mountingthe amplifieron the floorofthe trunkwillworkbutprovides
less cooling capability than vertical mounting.
Mounting the amplifier upside down to the rear deck of the trunk will
not provide proper cooling and will severely affect the performance
of the amplifier and is not recommended.
Passenger Compartment Mounting
Mounting the amplifier in the passenger compartment will work as
long as you provide a sufficient amount of air for the amplifier to cool
itself. If you are going to mount the amplifier under the seat of the
vehicle, you must have at least 1" (2.54cm) of air gap around the
amplifier's heatsink.
Mounting the amplifier with less than 1" (2.54cm) of air gap around
the amplifier's heatsink in the passenger compartment will not
provide propercoolingand willseverelyaffectthe performance ofthe
amplifier and is not recommended.
Engine Compartment Mounting
Rockford Fosgate amplifiers should never be mounted in the engine
compartment. Not only will this void your warranty but could create
an embarrassing situation caused by the ridicule from your friends.
– 9 –
BATTERY AN D CH ARG IN G
Amplifiers will put an increased load on the vehicle's battery and
charging system. We recommend checking your alternator and
battery condition to ensure that the electrical system has enough
capacity to handle the increased load of your stereo system. Stock
electrical systems which are in good condition should be able to
handle the extra load of any Rockford amplifier without problems,
although battery and alternator life can be reduced slightly. To
maximize the performance of your Rockford Fosgate amplifier, we
suggest the use of a heavy duty battery, high output alternator and an
energy storage capacitor.
W I R I N G T H E SYST E M
CAUTION: Avoid running power wires near the low level input
cables, antenna, power leads, sensitive equipment or harnesses. The
power wires carry substantial current and could induce noise into the
audio system.
• For safety, disconnect the negative lead from the battery prior to
beginning the installation.
1. Plan the wire routing. Take care when running signal level RCA
cablesto keep them close togetherbutisolated from the amplifier's
power cables and any high power auto accessories, especially
electric motors. This is done to prevent coupling the noise from
radiated electrical fields into the audio signal. When feeding the
wires through the firewall or any metal barrier, protect them with
plastic or rubber grommets to prevent short circuits. Leave the
wires long at this point to adjust for a precise fit at a later time.
2. Prepare the Power cable for attachment to the amplifier by
stripping 5/8" of insulation from the end of the wire. The use of 8
gauge power cable can interfere with the installation of the end
caps. Proper wire dress can prevent this from occurring. To
prevent the wire from fraying, strip the insulation at a 45° angle.
Insert the bared wire into the B+ terminal with the long side of the
insulation on the top. Bend the cable down at a 90° angle. Tighten
the set screw to secure the cable in place.
– 10 –
3. Punch 160x
4
Trim the powercable to within 18"ofthe batteryand installthe
protective rubber boot packed with the fuseholder over the
end of the wire. Strip 3/8" of insulation from the wire and insert
it into the end of the fuseholder, then crimp it in place. Slide
the rubber boot into place to cover the connection. Use the
section ofcable trimmed earlierand connectitto the otherend
of the fuseholder.
Punch 240x
4
Mount the fuseholder within 18" of the battery using two (2) #8
screws. Disassemble the fuseholder. You should have 2 black
plastic end caps, 2 gold-plated fuse clips, a plastic spacer and
the fuseholder body. Trim the amplifier power cable to reach
the fuseholder and strip the wire 3/8". Slide one of the end caps
over the wire (narrow end first) and insert the wire into one of
the fuse clips. Tighten the set screw. Screw the black end cap
to the fuseholder body to secure the cable. Use the section of
cable that was trimmed earlier and connect it to the other end
of the fuseholder. Install the plastic spacer in the fuseholder
and attach the cable to the fuseholder body.
NOTE: The B+ cable MUST be fused 18" or less from the
vehicle's battery. Install the fuseholder under the hood and
prepare the cable ends as stated above. Connections should
be water tight.
4. Strip 3/8" from the battery end of the power cable and crimp
the large ring terminal to the cable. Use the ring terminal to
connect to the battery positive terminal. Do not install the fuse
at this time.
5. Prepare a length ofcable to be used forthe ground connection.
Strip 5/8" of insulation from the end of the cable as described
previously and connect to the appropriate terminal of the
amplifier. Prepare the chassis ground by scraping any paint
from the metal surface and thoroughly clean the area of all dirt
and grease. Strip the other end of the wire and attach a ring
connector. Fasten the cable to the chassis using a screw.
– 11 –
6. Prepare the REM turn-on wire for connection to the amplifier
by stripping 5/8" of insulation from the wire end and crimping
an insulated spade connector in place. Slide the connector
over the REM terminal on the amplifier. Connect the other end
of the REM wire to a switched 12 volt positive source. The
switched signal is usually taken from the source unit's auto
antenna or the accessory lead. If the source unit does not have
these outputs available, the recommended solution is to wire
a mechanical switch in line with a 12 volt source to activate
the amplifier.
7. Connectthe source signalto the amplifierbypluggingthe RCA
cables into the input jacks at the amplifier.
8. Connect the speakers. Strip the speaker wires 5/8" and insert
into the appropriate terminal on the amplifier. Insert the bared
wire into the speaker terminal and tighten the set screw to
secure into place. Be sure to maintain proper speaker polarity.
DO NOT chassis ground any of the speaker leads as unstable
operation may result.
9. Perform a finalcheckofthe completed system wiringto ensure
that all connections are accurate. Check all power and ground
connections for frayed wires and loose connections which
could cause problems.
10.
After the final inspection is complete, install the power fuse
and enjoy listening. During the initial listening period, you
may need to “fine tune” any phasing and level settings within
your particular vehicle. To aid in this procedure, play a track
with high musical content and cruise around your neighbor-
hood. After fully evaluating the transient response of your
system and making any final adjustments, all your neighbors
within a 1 mile radius will assume that you have just success-
fully completed another upgrade to your audio system for
which they will probably spill thumbtacks on your driveway.
– 12 –
U SI N G T H E XCARD
The crossover functions are controlled through the use of an
XCard and can be set for high-pass, low-pass or full range
operation. Each crossover card has two faces: one face operates
Full Range, the other has arrows to indicate the edge for selecting
HP (high-pass) or LP (low-pass) operation. Orient the card with
the desired operating edge, indicated by the arrow, toward the
socket terminals inside the amplifier. Firmly, but carefully, plug
the card into the socket.
High-Pa ss
Low-Pa ss
Full Range
H P
LP
L P
HP
FULL ↕
The crossover point can be altered by changing the resistor value.
Use the following formula to select the appropriate resistor value
to be placed on the XCard.
3386
= R (in kΩ) for .047µf cap
The actual formula is:
f
o
1
R =
7234
2πf c
= R (in kΩ) for .022µf cap
o
f
o
Crossover Card
HigPass
LoPass
FulRange
FULL
Where: R = ohms
f = desired crossover frequency
o
c = capacitor in farads
-6
ex: .047 x 10 for .047µf cap
– 13 –
USING THE SIGNAL INPUT SWITCH
2-Channel Input
Input
1 2
+ L– + R–
– L+ – R+
L
R
L
R
Front XCa rd
Rea r XCa rd
• RCAs connected to Front inputs
• Signal Input Switch set to 2-channel input
• This configuration eliminates the need for signal splitters
Input
4-Channel Input
1
2 3 4
+ L– + R–
– L+ – R+
L F R F
L R R R
Front XCa rd
Rea r XCa rd
• RCAs connected to Front & Rear inputs
• Signal Input Switch set to 4-channel input
• This configuration allows for Front & Rear fading
– 14 –
BASI C CO N N EC TI O N S
Power Connections
Power
B+
GND
REM
Connect to remote
turn-on lead of
source unit
Connect to chassis
ground of vehicle*
Less than 18"
P160x4
- 30A
- 50A
P240x4
Connect to B+ of battery
with proper fuse
*Keep grounds as short as possible.
– 15 –
Stereo Operation
Input
2-Ch.
+ R–
– L+ – R +
+ L–
+
–
+
–
4 ohm
4 ohm
2-Channel Input
Rear XCard*
LP
Front XCard*
LP
Front XCa rd
Rea r XCa rd
*Note: XCard can be inserted in HP, LP, or Full Range
•
•
•
RCAs are connected to front inputs
Signal Input Switch set to 2-channel input
Gain for front and rear must be set equally to balance left and right
channels
•
•
•
Impedance for left bridged channel should be no less than 4Ω
Impedance for right bridged channel should be no less than 4Ω
XCards for front and rear are set identically as High-Pass, Low-Pass or
Full Range
– 16 –
Mono Operation
Input
2-Ch.
+ L– + R–
– L+ – R+
–
+
+
–
4 ohm
4 ohm
2-Channel Input
Rear XCard*
LP
Front XCard*
LP
Front XCa rd
Rea r XCa rd
*Note: XCard can be inserted in HP, LP, or Full Range
•
•
•
•
•
•
•
RCAs are connected to front inputs
Signal Input Switch set to 2-channel input
Gain for front and rear operates independently
Impedance for front bridged channel should be no less than 4Ω
Impedance for rear bridged channel should be no less than 4Ω
Front XCard can be set for High-Pass, Low-Pass or Full Range
Rear XCard can be set for High-Pass, Low-Pass or Full Range
– 17 –
3-Channel Operation
IN PU T
4-Ch.
2-Ch.
+ L– + R–
– L+ – R+
+
–
+
–
+
–
2 ohm
2 ohm
4 ohm
2-Channel Input
4-Channel Input
Rear XCard*
LP
Rear XCard*
LP
Front XCard*
HP
Front XCard*
HP
Front XCa rd
Front XCa rd
Rea r XCa rd
Rea r XCa rd
*Note: XCard can be inserted in HP, LP, or Full Range
*Note: XCard can be inserted in HP, LP, or Full Range
•
•
•
•
•
•
•
RCAs are connected to front or front and rear inputs
Signal Input Switch is set to 2-channel or 4-channel input
Gain for front and rear operates independently
Impedance for front stereo channels should be no less than 2Ω
Impedance for rear bridged channel should be no less than 4Ω
Front XCard can be set for High-Pass, Low-Pass or Full Range
Rear XCard can be set for High-Pass, Low-Pass or Full Range
Note: Invert the speaker wire polarity (+ and –) on the rear channels if
XCard for front channel is set to HP and XCard for rear channel is set to
LP (or vice versa).
– 18 –
4-Channel Stereo Operation
IN PU T
4-Ch.
2-Ch.
+ L– + R–
– L+ – R+
–
+
+
–
–
+
+
–
2 ohm
2 ohm
2 ohm
2 ohm
2-Channel Input
4-Channel Input
Rear XCard*
HP
Rear XCard*
HP
Front XCard*
HP
Front XCard*
HP
Front XCa rd
Front XCa rd
Rea r XCa rd
Rea r XCa rd
*Note: XCard can be inserted in HP, LP, or Full Range
*Note: XCard can be inserted in HP, LP, or Full Range
•
•
•
•
•
•
RCAs are connected to front or front and rear inputs
Signal Input Switch is set to 2-channel or 4-channel input
Gain for front and rear operates independently
Impedance for each stereo channel should be no less than 2Ω
Front XCard can be set for High-Pass, Low-Pass or Full Range
Rear XCard can be set for High-Pass, Low-Pass or Full Range
Note: Invert the speaker wire polarity (+ and –) on the rear channels if
XCard for front channel is set to HP and XCard for rear channel is set to
LP (or vice versa).
– 19 –
4-Channel Stereo/Single Bridged Operation
IN PU T
4-Ch.
2-Ch.
+ L– + R–
– L+ – R+
–
+
+
–
–
+
+
–
2 ohm
2 ohm
2 ohm
2 ohm
4 ohm
2-Channel Input
4-Channel Input
Rear XCard*
FULL
Rear XCard*
FULL
Front XCard*
HP
Front XCard*
HP
Front XCa rd
Front XCa rd
Rea r XCa rd
Rea r XCa rd
*Note: XCard can be inserted in HP, LP, or Full Range
*Note: XCard can be inserted in HP, LP, or Full Range
•
•
•
•
•
•
•
RCAs are connected to front or front and rear inputs
Signal Input Switch is set to 2-channel or 4-channel input
Gain for front and rear operates independently
Impedance for front and rear stereo channel should be no less than 2Ω
Impedance for rear bridged channel should be no less than 4Ω
Front XCard is set for High-Pass, Low-Pass or Full Range
Rear XCard is set to Full Range
– 20 –
4-Channel Stereo/Dual Bridged Operation
IN PU T
4-Ch.
2-Ch.
+ L– + R–
– L+ – R+
–
+
+
–
–
+
+
–
2 ohm
2 ohm
2 ohm
2 ohm
4 ohm
4 ohm
2-Channel Input
4-Channel Input
Rear XCard*
FULL
Rear XCard*
FULL
Front XCard*
FULL
Front XCard*
FULL
Front XCa rd
Front XCa rd
Rea r XCa rd
Rea r XCa rd
*Note: XCard can be inserted in HP, LP, or Full Range
*Note: XCard can be inserted in HP, LP, or Full Range
•
•
•
•
•
RCAs are connected to front or front and rear inputs
Signal Input Switch is set to 2-channel or 4-channel input
Gain for front and rear operates independently
Impedance for front and rear stereo channel should be no less than 2Ω
Impedance for front and rear bridged channels should be no less
than 4Ω
•
•
Front XCard is set to Full Range
Rear XCard is set to Full Range
– 21 –
SYST EM D I AG RAM S
80 Watt 3-Way System
Front
Rear
®
®
t
r
a
n
s
•
a
n
a
RFA-414
2X-4
RFA-414
2X-4
–
–
+
+
+
–
+
+
–
–
–
+
+
–
+
–
100Hz - 20,000Hz
12dB/octave HP
PWR-812
20Hz - 100Hz
12dB/octave LP
– 22 –
80 Watt 4-Way System
Front
Rear
®
®
t
r
a
n
s
•
a
n
a
275Hz - 20kHz
6dB/octave HP
RFA-414
RFA-414
2X-4
+
–
2X-4
+
–
PWR-812
100Hz - 275Hz
12dB/octave HP
6dB/octave LP
20Hz - 100Hz
12dB/octave LP
– 23 –
200 Watt 4-Way System
na
na
– 24 –
300 Watt 4-Way System
na
na
– 25 –
TR O U BL E SH O O T I N G
Symptom
Diagnosis
Remedy
Amplifier doesnot
turn on
Voltage applied to the Check the alternator, bat-
REM terminal of the tery, fuse, and wiring and
(Power LED is off) amplifierisnotbetween repair as necessary. If the
10.5 and 15.5 volts or voltage is above 15.5 volts,
there is no voltage have the electrical system
present.
inspected by an authorized
car service center.
Voltage to the B+ termi- Check the alternator, bat-
nal of the amplifier is tery, fuse, and wiring and
not between 10.5 and repair as necessary. If the
15.5 volts or there is no voltage is above 15.5 volts,
voltage present.
have the electrical system
inspected by an authorized
car service center.
Amplifier is not prop-
erly grounded.
Check wiring and repair as
necessary.
Check connections, substi-
tute with known working
source and cablesand repair
or replace as necessary.
RCA Input from source
unit is not connected or
not functioning prop-
erly.
Amplifier has no
sound
(Power LED is on)
Check XCard position and
repair or replace as neces-
sary.
XCard is missing or not
placed properlyin cross-
over slots.
Disconnect existing speak-
ers and test with known
working speakers and wires.
If amplifier plays, check and
repair wiring and installa-
tion of speakers as neces-
sary.
Speaker leads are
shorted to each other or
to the chassis of the ve-
hicle.
Disconnect existing speak-
ers and test with known
working speakers. If ampli-
fier plays, check and repair
speakers as necessary.
Speakers are defective.
– 26 –
Symptom
Diagnosis
Remedy
Readjust input gains of
amplifier.
Speaker Output
Low or Distorted
Input gain signal for
amplifier is incorrectly
set.
Check system with known
working source and repair
or replace original source
as needed.
Source unit output too
low or source unit has
no output.
Check XCard position and
repair or replace as neces-
sary.
XCard is missing or not
placed properlyin cross-
over slots.
Check the alternator, bat-
tery, fuse, and power and
ground wiring. Repair as
necessary.
Low battery voltage or
large voltage drops to
the amplifierunderload.
Signal input switch not
configured properly.
Check signal input switch
and reconfigure for 2-chan-
nel input.
No Output on
Rear Channels
Only
(using 2 inputs)
XCard is missing or not
placed properly in
crossover slot.
Check XCard position and
repair or replace as neces-
sary.
Signal input switch not
configured properly.
Check signal input switch
and reconfigure for 4-chan-
nel input.
Rear Channels
are Non-Fading
(using 4 inputs)
Voltage spike from out-
put of preceding com-
ponent is entering am-
plifierthrough inputsig-
nal.
Disconnect input signal to
amplifier and turn ampli-
fier on and off. If noise is
eliminated, connect REM
lead of amplifier to source
unit with a delay turn-on
module.
Amplifier Noise
(Turn-on Pop)
Voltage spike from re-
mote turn-on lead is
entering through REM
input terminal.
Use a different 12 volt
source for REM lead of am-
plifier. (i.e., battery direct)
If noise is eliminated, use a
relay to isolate amplifier
from noisy turn-on output.
– 27 –
Symptom
Diagnosis
Remedy
Engine Noise
Noise is radiating into
RCA signal cable.
Checkconnections, run the
RCA cables on a different
route awayfrom sourcesof
high voltage.
Bad componentin the sig-
nal chain.
Checkconnections, bypass
additional components
(crossoversand equalizers)
between the source unit
and the amplifier. Connect
one component at a time
to determine the culprit.
Repair or replace compo-
nents as necessary.
Noise is radiating into
speaker cables.
Disconnectexistingspeak-
ers and connect a test
speaker to the output ter-
minals of the amplifier. If
noise is gone, reroute the
speaker cables away from
sources of high voltage.
Multiple grounds in the
audio system.
Checkground connections
and connectamplifiers, sig-
nal processors, and other
components to a central
location or try a different
grounding point on the
chassis.
Ground loop between
source unit and antenna.
Check connections, dis-
connect antenna from
source unit. Ifnoise isgone,
install an antenna ground
loop isolator.
• If noise persists, see your Authorized Rockford Fosgate Dealer.
– 28 –
D YN AM I C P O W E R M E ASU R E M E N T S
About the Dynamic Power Measurements
The Audio Graph PowerCube is a test instrument used to measure the
output of an amplifier in accordance with IHF-202 industry stan-
dards. The IHF-202 standard is a dynamic power measurement and
was developed as a means of measuring power in a manner that best
represents the real world operation of an amplifier. Many manufac-
turers, including Rockford Fosgate, at times will measure amplifier
power into a fixed resistor (4 ohm, 2 ohm). While this method is useful
in some types of evaluation and testing, it is not representative of an
amplifier that is connected to a speaker and playing music.
Music
Music is dynamic; the sound waves are complex and constantly
changing. In order to simulate this, the IHF-202 standard calls for the
input signal to the amplifier to be a 1kHz bursted tone. This signal is
input (on for 20 milliseconds) and reduced 20dB for 480 millisec-
onds. The signal is gradually increased in level until the amplifier's
output exceeds 1% Total Harmonic Distortion (THD). At 1% distor-
tion becomes audible, therefore, any power produced above that
level is considered not usable. Many manufacturers represent their
amplifiers' output power in excess of 10% distortion. They use many
names for this measurement, such as Total Maximum Power or
Maximum Output Power. This is not indicative of the actual usable
output power.
Listening to Loudspeakers - Not Resistors
A loudspeaker is not a resistor. A resistor's value (resistance measured
in ohms) is fixed. A loudspeaker's impedance is dynamic. It is
constantly changing in value, dependent upon the frequency of the
input signal. Therefore, measuring power with the amplifier loaded
into a 4 ohm resistor is not the same as measuring power with the
amplifier connected to a 4 ohm speaker. Most people do not listen to
music through a resistor.
A 4 ohm speaker may experience a drop in impedance 4-6 times lower
than its nominal (printed) impedance. A speaker will also create phase
shifts in the signal that is passed through it. These phase shifts happen
because a speaker is an inductor (voice coil) and a capacitor (compli-
ance of the surround/spider), as well as a resistor (voice coil wire).
To simulate a speaker the Audio Graph PowerCube measures output
power into 20 different loads. It tests at 8 ohms, 4 ohms, 2 ohms and
1 ohm. Each of these impedances is also tested at –60°, –30°, 0°, +30°
and +60° phase angles. These different impedances and phase angles
representthe shiftsin impedance and phase thatcan occurin a typical
loudspeaker.
– 29 –
Information Cubed
The data acquired in the testing procedure is then graphed in the form
of a 3-dimensional cube. Hence the name PowerCube.
The Phase Angle is expressed on the horizontal axis, the Output
Voltage is presented on the vertical axis and the Impedance is
displayed on the Z axis. Output Power, in watts, is listed on the left
hand side for each impedance at each phase angle.
AudioGraph – The PowerCube™
MODEL BEING
TESTED
VOLTAGE FROM
BATTERY
x2 = STEREO
MONO = BRIDGED MONO
Amplifier: PUNCH 200ix 14.4V x 2
Serial No:
Rated Power : 100 W @ 4 Ohms
Owner
:
ROCKFORD CORPORATION
8Ω –60° 84
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
*
–30° 84
0° 83
POWER
IN
50V
30V
30° 84
60° 85
WATTS
{
4Ω –60° 159
*
–30° 154
0° 153
30° 154
60° 158
10V
2Ω –60° 266
*
–30° 251
0° 245
8Ω
4Ω
30° 248
60° 261
2Ω
–60° (Cap)
0°
1Ω
1Ω –60° 378
*
{
(Ind) +60°
{
–30° 343
0° 333
Impedance
PHASE ANGLES
30° 339
60° 373
• Example of a 200ix PowerCube
What is an Amplifier?
An amplifier by definition is a voltage generating device, recreating
the signal which is input to it identically but with increased volume.
It will be connected to a reactive load (the speaker). The impedance
of this load and phase of the signal passing through the load will vary,
dependent upon the frequency of the input signal (music).
Therefore, a perfect amplifier will be able to maintain the same output
voltage regardless of load characteristics and will not alter the signal
it is reproducing. A perfect amplifier when measured by the
AudioGraph PowerCube would present data that forms a perfect
cube. Unfortunately, amplifiers are not perfect. The laws of physics
generally prevent it. A great amplifier is about the best one can hope
to attain.
As you can see by the PowerCube and as you will experience by
listening, your Punch amplifier is a GREAT AMPLIFIER!
– 30 –
160X SP E C I F I C AT I O N S
4
Continuous Power Rating (Competition Standard) – Measured at 13.8V
RMS continuous power per channel, all channels
driven into a 4Ω load from 20-20,000Hz with
less than 0.05% Total Harmonic Distortion (THD)
20 Watts
RMS continuous power per channel, all channels
driven into a 2Ω load from 20-20000Hz, with
less than 0.1% Total Harmonic Distortion (THD)
40 Watts
80 Watts
RMS continuous power bridged into a 4Ω load
from 20-20000Hz, with less than 0.1%
Total Harmonic Distortion (THD)
Dynamic Power Rating (IHF-202 Standard) – Measured at 14.4V
2-Channel bridged into a 4Ω load
120 Watts
60 Watts
40 Watts
per channel into a 2Ω load
per channel into a 4Ω load
Signal-to-Noise Ratio (A-weighted)
>100dB
Factory Default Crossover Point
Crossover Alignment
Dimensions
100Hz Butterworth
12dB/octave
95⁄8"W x 125⁄8"L x 25⁄8"H
(24.4cm) x (32.0cm) x (6.6cm)
Damping Factor @ 4Ω (at output connector) >150
Bandwidth
Frequency Response
Slew Rate
IM Distortion (IHF)
Input Sensitivity
15Hz-100kHz ±3dB
20Hz-20kHz ±0.5dB
30 V/µs
<0.05%
Variable from 150mV to 3V
Preset at the factory for 500mV
30 amp
B+ Fuse Size (external to amplifier)
Input Impedance
20k ohms
– 31 –
240X SP E C I F I C AT I O N S
4
Continuous Power Rating (Competition Standard) – Measured at 13.8V
RMS continuous power per channel, all channels
driven into a 4Ω load from 20-20,000Hz with
less than 0.05% Total Harmonic Distortion (THD)
30 Watts
RMS continuous power per channel, all channels
driven into a 2Ω load from 20-20000Hz, with
less than 0.1% Total Harmonic Distortion (THD)
60 Watts
RMS continuous power bridged into a 4Ω load
from 20-20000Hz, with less than 0.1%
Total Harmonic Distortion (THD)
120 Watts
Dynamic Power Rating (IHF-202 Standard) – Measured at 14.4V
2-Channel bridged into a 4Ω load
180 Watts
100 Watts
60 Watts
per channel into a 2Ω load
per channel into a 4Ω load
Signal-to-Noise Ratio (A-weighted)
>100dB
Factory Default Crossover Point
Crossover Alignment
Dimensions
100Hz Butterworth
12dB/octave
95⁄8"W x 135⁄8"L x 25⁄8"H
(24.4cm) x (32.0cm) x (6.6cm)
Damping Factor @ 4Ω (at output connector) >150
Bandwidth
Frequency Response
Slew Rate
IM Distortion (IHF)
Input Sensitivity
15Hz-100kHz ±3dB
20Hz-20kHz ±0.5dB
30 V/µs
<0.05%
Variable from 150mV to 3V
Preset at the factory for 500mV
50 amp
B+ Fuse Size (external to amplifier)
Input Impedance
20k ohms
– 32 –
W ARRAN TY IN FO RMATIO N
Rockford Fosgate warrants all electronics to the original consumer/purchaser to
be free from defects in materials or workmanship for a period of three (3) years.
We will cover parts and labor provided the product was purchased from an
Authorized Rockford Fosgate Dealer. This warranty does not apply to any product
on which the seals and/or serial number have been broken, removed, tampered
with, defaced or altered in any manner. This warranty only applies to the original
consumer/purchaser and is not transferable.
Electronics found to be defective during the warranty period will be repaired or
replaced at Rockford Fosgate’s discretion. Repaired or replaced electronics will
be covered by the balance of the original warranty period only. Rockford Fosgate
shall not be responsible for any incidental or consequential damages resulting
from a defect in electronics. Some states do not allow the exclusion or limitation
of incidental or consequential damages, so the previous limitation may not be
applicable.
The warranty does not cover any appearance item, any cost or expense related to
the removal or reinstallation of the product, any accessory used in conjunction
with the product, damage to the product resulting from alteration, accident,
misuse or abuse, or improper installation. This warranty does not apply if the parts
or labor, which would otherwise be provided without charge under this warranty,
are obtained from any source other than Rockford Fosgate or an Authorized
Rockford Fosgate Service Center.
This warranty is the only express warranty and does not create any implied
warranties. Rockford Fosgate limits its obligations under any implied warranties
under state laws to a period not to exceed the written warranty period. Some states
do not allow limitation on how long an implied warranty lasts, so the above
limitation maynotapply. Thiswarrantyappliesonlyto productssold in the United
States of America or its possessions. For warranty outside the U.S.A., please
contact the nearest Authorized Rockford Fosgate Dealer. This warranty gives the
consumerspecific legalrights, and the consumermayhave otherrightswhich vary
from state to state.
A defective product must be shipped prepaid to the Authorized Rockford Fosgate
Dealer from which the consumer purchased the product or to the Rockford
Fosgate factoryin Tempe, Arizona in the originalfactorycarton orequivalent. Any
shipping loss or damage will be borne by the consumer or the consumer’s shipper.
A consumer returning a product to the factory must call (800) 669-9899 for a
Return Authorization Number. All shipments shall be clearly marked with the
Return Authorization Number on the outside of the shipping carton.
Ship to:
Rockford Corporation
Warranty Repair Department
2055 E. 5th Street
Tempe, AZ 85281 U.S.A.
Return Authorization Number:_________________
NOTES
NOTES
Rockford Fosgate
Rockford Corporation
546 South Rockford Drive
Tempe, Arizona 85281 U.S.A.
In U.S.A., (602) 967-3565
In Europe, Fax (49) 4207-801250
In Japan, Fax (81) 559-79-1265
6/95
MAN-0989-B
|