Rockford Fosgate PUNCH 160.4 trans ana User manual

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 crafts-
manshipandcriticaltestingprocedures,wehavecreatedawiderangeofproductsthat
reproduce music with all the clarity and richness you deserve.
For maximum performance we recommend you have your new Rockford Fosgate
productinstalledbyan Authorized Rockford Fosgate Dealer, asweprovidespecialized
training through Rockford Technical Training Institute (RTTI). Please read your
warranty and retain your receipt and original carton for possible future use.
To add the finishing touch to your new Rockford Fosgate image order your Rockford
accessories,whichincludeeverythingfromT-shirtsandjacketstohatsandsunglasses.
To get a free brochure on Rockford Fosgate products and Rockford accessories, in the
U.S.call602-967-3565orFAX602-967-8132.Forallothercountries,call+001-602-
967-3565 or FAX [phone].
Theserialnumbercanbefoundontheoutsideofthebox. Pleaserecorditinthe
space provided below as your permanent record. This will serve as verification
of your factory warranty and may become useful in recovering your amplifier if
it is ever stolen.
Serial Number: ____________________
Model Number:____________________
If,afterreadingyourmanual,youstillhavequestionsregardingthisproduct,we
recommend that you see your Rockford Fosgate dealer. If you need further
assistance, you can call us direct at 1-800-795-2385. Be sure to have your serial
number, model number and date of purchase available when you call.
PRACTICE SAFE SOUND™
CONTINUOUS EXPOSURE TO SOUND PRESSURE LEVELS
OVER100dBMAYCAUSEPERMANENTHEARINGLOSS.HIGH
POWEREDAUTOSOUNDSYSTEMSMAYPRODUCESOUND
PRESSURE LEVELS WELL OVER 130dB. USE COMMON SENSE
AND PRACTICE SAFE SOUND.

Sections marked
ADVANCED OPERATION
include in-depth
technical information
Sections marked
TROUBLESHOOTING
include recommendations
for curing
installation problems
Sections marked
INSTALLATION
include “slam dunk”
wiring connections
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Welcome to Rockford Fosgate! This manual is designed to provide
informationfortheowner,salespersonandinstaller.Forthoseofyouwho
want quick information on how to install this product, please turn to the
InstallationSection ofthismanualorrefertotheiconslistedbelow.Other
information can be located by using the Table of Contents. We, at
RockfordFosgate,haveworkedveryhardtomakesurealltheinformation
in this manual is current. But, as we are constantly finding new ways to
improveourproduct,thisinformationissubjecttochangewithoutnotice.
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TABLE OF CONTENTS
Introduction ............................................................................................1
Accessory Pack .......................................................................................1
Technical Design Features ......................................................................2
Design Features.......................................................................................5
Installation Considerations ......................................................................7
Mounting Location..................................................................................8
Battery and Charging...............................................................................9
Wiring the System ...................................................................................9
Using Passive Crossovers ......................................................................12
Table of Crossover Component Values..................................................13
Using the XCard....................................................................................14
Resistor Chart........................................................................................15
Using the Signal Input Switch................................................................16
Installation ............................................................................................17
System Diagrams...................................................................................24
Rockford Fosgate Accessories................................................................28
Troubleshooting ....................................................................................30
Dynamic Power Measurements.............................................................33
160.4 Specifications..............................................................................35
240.4 Specifications..............................................................................36
Warranty Information............................................................................37
International Information.......................................................................38

INTRODUCTION
The Punch 160.4and 240.4are 4-channel amplifiers which can
deliver 160 watts and 240 watts RMS respectively. Both amplifiers
utilize a 2/4-channel input switch to eliminate the need for signal
splitters.ApairofinternalXCardcrossoversallowtheamplifierstobe
configured for use with many popular system designs without the
added cost of external processors. The Punch 160.4and 240.4are
powerful 4-channel amplifiers with integrated features which are
offered at a competitive price.
WestronglyrecommendyouhaveyourAuthorizedRockfordFosgate
Dealer install the new Punch amplifier. If you do choose to install it
yourself, please be sure to read the entire manual before beginning.
ACCESSORY PACK
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
(4) Amplifier mounting screws (#8 x 3/4" Phillips)
(10)Speaker & power connector screws (3/32" Allen )
(4) End cap mounting screws (9/64" Allen)
(1) Allen Wrench 9/64"
(1) Allen Wrench 3/32"
(1) ATC In-line Fuseholder (160.4)
(1) AGU In-line Fuseholder (240.4)
(1) ATC 30 Amp Fuse (160.4)
(1) AGU 50 Amp Fuse (240.4)
– 1 –

TECHNICAL DESIGN FEATURES
– 2 –
◆TOPAZ (Tracking Operation Pre-Amplifier Zone)
The TOPAZ (TrackingOperationPre-AmplifierZone)circuitrysolves
groundloopnoiseproblemscommontoautomotiveamplifierdesign.
Thisinnovativenewdevelopmentallowsvastlyimprovedisolationof
the input signal grounds from the power supply ground of the
amplifier.Thisisaccomplishedbyallowingthesourceunittocontrol
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.
THERESULT:Eliminationoftroublesomegroundloopnoisebetween
source and amplifier.
◆TRANS•ANA
(TRANSconductance Active Nodal Amplifier)
The TRANS•ANA (TRANSconductance Active Nodal Amplifier) is a
circuitthatallowstheaudiosignaltopassthroughtheamplifieratlow
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 drive transistors at ultrasonic frequencies.
This allows amplifier performance similar to trans• nova which is
highly stable and linear while utilizing the advantages of a non-
floating power supply.
THERESULT:Anextendedfrequencybandwidthaccuratelysupplied
to the output stages of the amplifier.

◆DSM (Discrete Surface Mount) Technology
The DSM (DiscreteSurfaceMount)manufacturingprocesscombines
theadvantages of both discrete componentsand integrated circuitry.
RockfordFosgateistheonlyAmericanamplifiermanufacturertohave
invested millions into this process. DSM components differ from
conventional discrete components in three ways. They are more
compact, more rugged, and they efficiently dissipate generated heat.
Using them wherever appropriate allows 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
maximumaudioperformanceandhighestsignal-to-noiseratiostobe
obtained in amplifiers of desirable package size without resorting to
“amplifier-on-a-chip”shortcuts.TheseadvantagesareshowninFigure
1.
Surface Mount
Thru-Hole
Solder Solder
Component
Figure 1
THE RESULT: Fewer connections, improved reliability, shorter
signal paths, superior signal-to-noise ratio and awesome sonic
performance.
◆XCard (Internal Crossover)
The Punch amplifiers utilize internal active crossovers. These
crossovers have many performance advantages such as using
discrete components for exact frequency adjustments which are
far superior to potentiometers. Additionally, the XCard can be
configuredforhigh-pass,low-passandfullrangeoperation.With
slight modifications, many crossover frequencies and slope con-
figurations can be achieved.
THE RESULT: Increased system design flexibility with a precise
electronic crossover without the limitations of conventional
potentiometer designs.
– 3 –

◆NOMAD (NOn-Multiplying Advanced Decision)
The Punch amplifiers use an analog computer process to maximize
safe output power under all operating conditions. Rockford 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
sophisticatedversionofthistechniqueeverused,bringingpreviously
unavailable levels of accuracy, stability, temperature immunity and
reliabilitytothiscriticalprocess.NOMADmakesadvanceddecisions
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
communityto utilizeMOSFETdevicesinboth the powersupply and
the outputstages . MOSFET (MetalOxideSemiconductorFieldEffect
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 imped-
ance 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 fre-
quency phase shifting normally associated with tube operation.
THE RESULT: Operational characteristics similar to vacuum tubes
without the performance limitations of tube designs.
– 4 –

DESIGN FEATURES
1. CastAluminumHeatsink–ThecastaluminumheatsinkofthePunch
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. EndCaps–Theuniqueendcapsconcealthewiringandinputcables,
giving the amplifier a clean “stealth” look.
3. Speaker Terminals – The heavy duty, gold-plated terminal block
connectors(+and–) willacceptwiresizesfrom8AWGto18AWG.
These gold-plated connectors are immune to corrosion that can
cause signal deterioration.
4. Power Terminals – Thepower andground connectors onthePunch
amplifier are gold-plated and will accommodate up to 8 AWG wire
maximizing the input current capability of the amplifier.
5. REMTerminal – Thisgold spadeterminalisusedfor theautopower/
remote turn-on of the Punch amplifier.
– 5 –
Rear
Front
8 8
63
3
–L+
Rear Gain
Rear Speakers
Bridged Mono
L
R
Front Gain
L
R
–R++L–
Front Speakers
Bridged Mono
+R–
5 4 9
POWER
REM GNDB+

6. RCA Input Jacks – The industry standard RCA jacks provide
easyconnectionsforsignallevelinput.Theyaregold-platedto
resist the signal degradation caused by corrosion.
7. SignalInputSwitch–Thisswitchallowsselectionof2-channel
or 4-channel source unit feed.
8. Input Sensitivity Controls – The input level controls are preset
tomatch the output of mostsource units. Theycan be adjusted
to match output levels from a variety of source units.
9. LED Power Indicator – The LED illuminates when the unit is
turned on.
10. XCard(InternalCrossover)–Thesebuilt-incrossovercardsare
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.
– 6 –
Low-Pass
Full Range
High-Pass
HP
LP
HP
LP
FULL
Rear
XCard
Front
XCard
2 Channel Input
4 Channel Input
trans• ana
ROCKFORD CORPORATION
MADE IN THE USA
®
®
20 Watts x 4 into 4Ωat 0.05% THD
40 Watts x 4 into 2Ωat 0.1% THD
AMPLIFIER
XCard 1 XCard 2
7
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INSTALLATION CONSIDERATIONS
This section focuses on some of the vehicle considerations for installing
your new Punch amplifier. Checking your battery and present sound
system,aswellaspre-planningyoursystemlayoutandbestwiringroutes
will save installation time. When deciding how to lay out your new
system,besurethateachcomponentwillbeeasilyaccessibleformaking
adjustments.
Before beginning any installation, 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 mini-
mize 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. Neverrunwiresunderneaththevehicle. Runningthewiresinsidethe
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, espe-
cially the firewall.
9. ALWAYS protectthebatteryandelectricalsystemfromdamagewith
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. Grounding
connectionsshould beasshortaspossible andalwaysbeconnected
to metal that is welded to the main body, or chassis, of the vehicle.
The following is a list of tools you will need for installing the Punch
amplifier:
Allen wrenches 9/64" & 3/32" (included) Voltmeter
Wire strippers Battery post wrench
Electric hand drill w/assorted bits Wire cutters
Wire crimpers Assorted connectors
– 7 –

MOUNTING LOCATION
The mounting location and position of your amplifier will have a great
effect on its ability to dissipate the heat generated during normal opera-
tion. The design of our cast aluminum heatsink serves to easily dissipate
the heat generated over a wide range of operating conditions. However,
to maximize the performance of your amplifier, care should be taken to
ensure adequate ventilation.
Trunk Mounting
Mountingtheamplifierverticallyonasurfacewiththefingroovesrunning
up and down will provide the best cooling of the amplifier.
Mountingtheamplifieronthefloorofthetrunkwillworkbutprovidesless
cooling capability than vertical mounting.
Mountingthe amplifier upsidedown to the reardeck of thetrunkwill 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'sheatsinkinthepassengercompartmentwillnotprovideproper
coolingandwillseverelyaffecttheperformanceoftheamplifierandis 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.
– 8 –

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
handletheincreasedloadofyourstereosystem. Stockelectricalsystems
which are in good condition should be able to handle the extra load of
any Rockford amplifier without problems, although battery and alterna-
tor life can be reduced slightly. To maximize the performance of your
Rockford Fosgate amplifier, we suggest the use of a heavy duty battery
and an energy storage capacitor.
BATTERY AND CHARGING
WIRING THE SYSTEM
CAUTION: Avoid running power wires near the low level input cables,
antenna,powerleads,sensitiveequipmentorharnesses.Thepowerwires
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.
Configure the internal XCard crossovers prior to installation. (Refer to
page 14 for more information.)
1. Planthewirerouting.TakecarewhenrunningsignallevelRCAcables
to keep them close together but isolated 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
electricalfieldsintotheaudiosignal.Whenfeedingthewiresthrough
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 B+ cable for attachment to the amplifier by stripping 5/8"
ofinsulationfromtheendofthewire.Theuseof8gaugepowercable
can interfere with the installation of the end caps. Proper wire dress
canpreventthisfromoccurring.Topreventthewirefromfraying,strip
theinsulationata45°angle.InsertthebaredwireintotheB+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.
– 9 –

3. Punch 160.4
Trim the power cable to within 18" of the battery and install the
protectiverubberbootpackedwiththefuseholderovertheendof
thewire.Strip3/8"ofinsulationfromthewireandinsertitintothe
endofthefuseholder,thencrimpitinplace.Slidetherubberboot
into place to cover the connection. Use the section of cable
trimmed earlier and connect it to the other end of the fuseholder.
Punch 240.4
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: TheB+cableMUSTbefused18"orlessfromthevehicle'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
tothebatterypositiveterminal.Donotinstallthefuseatthistime.
5. PreparealengthofcabletobeusedfortheGNDconnection.Strip
5/8"ofinsulationfromtheendofthecableasdescribedpreviously
and connect to the appropriate terminal of the amplifier. Prepare
the chassis ground by scraping any paint from the metal surface
andthoroughlycleantheareaofalldirtandgrease.Striptheother
endofthewireandattacharingconnector.Fastenthecabletothe
chassis using a screw.
– 10 –

6. Prepare the REM turn-on wire for connection to the amplifier by
stripping 1/4" 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
usuallytakenfromthesourceunit'sautoantenna ortheaccessory
lead. If the source unit does not have these outputs available, the
recommendedsolutionistowireamechanicalswitchinlinewith
a 12 volt source to activate the amplifier.
7. Connect the source signal to the amplifier by plugging the RCA
cables into the input jacks at the amplifier.
8. Connectthespeakers.Stripthespeakerwires5/8".Insertthebared
wire into the speaker terminal and tighten the set screw to secure
intoplace. Besuretomaintainproperspeakerpolarity. DONOT
chassisgroundanyofthespeakerleadsasunstableoperationmay
result.
9. Performafinalcheckofthecompletedsystemwiringtoensurethat
allconnectionsareaccurate.Checkallpowerandgroundconnec-
tions for frayed wires and loose connections which could cause
problems.
After the final inspection is complete, install the power fuse and
enjoy listening. During the initial listening period, you may need
to“finetune”anyphasingandlevelsettingswithinyourparticular
vehicle. To aid in this procedure, play a track with high musical
contentandcruisearoundyourneighborhood.Afterfullyevaluat-
ing the transient response of your system and making any final
adjustments,allyourneighborswithina1mileradiuswillassume
thatyouhavejustsuccessfullycompletedanotherupgradetoyour
audio system for which they will probably spill thumbtacks on
your driveway.
10.
– 11 –

USING PASSIVE CROSSOVERS
Apassive crossover is acircuit that uses capacitorsand/or coils and is
placed on speaker leads between the amplifier and speaker. The
crossover delegates a specific range of frequencies to the speaker for
optimumdriverperformance.Acrossovernetworkcanperformoneof
three functions: High-Pass (capacitors), Low-Pass (inductors or coils)
and Bandpass (combination of capacitor and coil).
Themostcommonlyusedpassive crossover networks are 6dB/octave
systems. These are easy to construct and require one component per
filter. Placing this filter in series with the circuit will reduce power to
the speaker by 6dB/octave above or below the crossover point
depending on whether it is a high-pass or low-pass filter. More
complex systems such as 12dB/octave or 18dB/octave can cause
impedance problems if not professionally designed.
Passive crossovers are directly dependent upon the speaker's imped-
ance and component value for accuracy. When passive crossover
components are used in multiple speaker systems, the crossover's
effect on the overall impedance should be taken into consideration
along with the speaker's impedance when determining amplifier
loads. CAUTION: The Rockford Fosgate amplifiers are not recom-
mended for impedance loads below 2 Ω stereo and 4 Ω bridged
(mono) loads.
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TABLE OF CROSSOVER COMPONENT VALUES
6 dB/Octave Low-Pass 6 dB/Octave High-Pass
Freq.
Hertz Speaker Impedance
80 4.1mH 1000µF 8.2mH 500µF 16mH 250µF
100 3.1mH 800µF 6.2mH 400µF 12mH 200µF
130 2.4mH 600µF 4.7mH 300µF 10mH 150µF
200 1.6mH 400µF 3.3mH 200µF 6.8mH 100µF
260 1.2mH 300µF 2.4mH 150µF 4.7mH 75µF
400 .8mH 200µF 1.6mH 100µF 3.3mH 50µF
600 .5mH 136µF 1.0mH 68µF 2.0mH 33µF
800 .41mH 100µF .82mH 50µF 1.6mH 26µF
1000 .31mH 78µF .62mH 39µF 1.2mH 20µF
1200 .25mH 66µF .51mH 33µF 1.0mH 16µF
1800 .16mH 44µF .33mH 22µF .68mH 10µF
4000 .08mH 20µF .16mH 10µF .33mH 5µF
6000 51µH14µF .10mH 6.8µF .20mH 3.3µF
9000 34µH 9.5µF68µH 4.7µF .15mH 2.2µF
12000 25µH 6.6µF51µH 3.3µF 100µH 1.6µF
2 OHMS 8 OHMS
4 OHMS
LC L CL C
LC
L = Low-Pass (Inductor)
C = High-Pass (Capacitor)
For more information, see your Authorized Rockford Fosgate Dealer.
6 dB/Octave High-Pass and Low-Pass Filters
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USING THE 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
hasarrowstoindicatetheedgeforselectingHP(high-pass)orLP(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.
Thecrossoverpointcanbe altered by changing the 4 resistor values.
Use the following formula to select the appropriate resistor value to
be placed on the XCard.
3386
fo= R (in kΩ) for .047µf cap
= R (in kΩ) for .022µf cap
7234
fo
Where: R = ohms
fo= desired crossover frequency
c = capacitor in farads
ex: .047 x 10-6 for .047µf cap
Crossover Card
High Pass
Low Pass
Full Range
R1 R2 R1 R2
FULL
The actual formula is:
R = 1
2πfoc
Low-Pass Full RangeHigh-Pass
FULL
↕
HP
➝
➝
LP
HP
➝
➝
LP
– 14 –
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RESISTOR CHART
Frequency R1 R2
20Hz 169kΩ169kΩ
25Hz 133kΩ133kΩ
30Hz 110kΩ110kΩ
35Hz 95.3kΩ95.3kΩ
40Hz 84.5kΩ84.5kΩ
45Hz 75kΩ75kΩ
50Hz 68.1kΩ68.1kΩ
55Hz 61.9kΩ61.9kΩ
60Hz 56.2kΩ56.2kΩ
65Hz 52.3kΩ52.3kΩ
70Hz 48.7kΩ48.7kΩ
75Hz 45.3kΩ45.3kΩ
80Hz 42.2kΩ42.2kΩ
85Hz 40.2kΩ40.2kΩ
90Hz 37.4kΩ37.4kΩ
200Hz 16.9kΩ16.9kΩ
300Hz 11.3kΩ11.3kΩ
400Hz 8.45kΩ8.45kΩ
500Hz 6.65kΩ6.65kΩ
600Hz 5.62kΩ5.62kΩ
700Hz 4.75kΩ4.75kΩ
800Hz 4.22kΩ4.22kΩ
900Hz 3.74kΩ3.74kΩ
1kHz 3.40kΩ3.40kΩ
1.2kHz 2.80kΩ2.80kΩ
2kHz 1.69kΩ1.69kΩ
3kHz 1.10kΩ1.10kΩ
4kHz 845Ω845Ω
5kHz 665Ω665Ω
6kHz 562Ω562Ω
7kHz 487Ω487Ω
8kHz 422Ω422Ω
Butterworth Alignment Q = .707
1% resistors used with 0.047µF caps Butterworth Alignment Q = .707 1% resistors used with 0.022µF caps
Ourtestshaveshownthatusing 0.047µfcapacitorsforfrequenciesbelow100Hz,and
0.022µf capacitors for frequencies above 100Hz, result in more linear crossover
control. Refer to the Specifications page to determine the capacitor value of each
supplied XCard.
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Frequency R1 R2
20Hz 357kΩ357kΩ
25Hz 287kΩ287kΩ
30Hz 237kΩ237kΩ
35Hz 205kΩ205kΩ
40Hz 178kΩ178kΩ
45Hz 162kΩ162kΩ
50Hz 143kΩ143kΩ
55Hz 130kΩ130kΩ
60Hz 121kΩ121kΩ
65Hz 110kΩ110kΩ
70Hz 102kΩ102kΩ
75Hz 95.3kΩ95.3kΩ
80Hz 90.9kΩ90.9kΩ
85Hz 84.5kΩ84.5kΩ
90Hz 80.6kΩ80.6kΩ
200Hz 35.7kΩ35.7kΩ
300Hz 23.7kΩ23.7kΩ
400Hz 17.8kΩ17.8kΩ
500Hz 14.3kΩ14.3kΩ
600Hz 12.1kΩ12.1kΩ
700Hz 10.2kΩ10.2kΩ
800Hz 9.9kΩ9.9kΩ
900Hz 8.6kΩ8.6kΩ
1.0kHz 7.15kΩ7.15kΩ
1.2kHz 6.04kΩ6.04kΩ
2.0kHz 3.57kΩ3.57kΩ
3.0kHz 2.37kΩ2.37kΩ
4.0kHz 1.76kΩ1.76kΩ
5.0kHz 1.43kΩ1.43kΩ
6.0kHz 1.21kΩ1.21kΩ
7.0kHz 1.02kΩ1.02kΩ
8.0kHz 909Ω909Ω

USING THE SIGNAL INPUT SWITCH
2-Channel Input
4-Channel Input
– 16 –
•RCAs connected to Front inputs
• Signal Input Switch set to 2-channel input
• This configuration eliminates the need for signal splitters
•RCAs connected to Front & Rear inputs
• Signal Input Switch set to 4-channel input
• This configuration allows for Front & Rear fading
Rear XCard Front XCard
Rear
Front
Rear Gain
L
R
Front Gain
L
R
Input
1 2
1212
+L–
Bridged Mono
Front Speakers
+R– –R+–L+
Bridged Mono
Rear Speakers
Rear XCard Front XCard
Rear
Front
Rear Gain
L
R
Front Gain
L
R
1 2
1234
+L–
Bridged Mono
Front Speakers
+R–
Input
4 3
–R+–L+
Rear Speakers
Bridged Mono