Rockford Fosgate Punch 2X User manual

O WNER ’ S M ANUAL
2X, 3X AND 5X
E LECTRONIC C ROSSOVER



Dear Customer,
Congratulations on your purchase of America’s finest brand of car audio compo-
nents. At Rockford Fosgate we are committed to musical reproduction at its best,
andwearepleasedyouchoseourproduct. Throughyearsofengineeringexpertise,
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
specializedtrainingthroughRockfordTechnicalTrainingInstitute(RTTI). Please
read your warranty and retain your receipt and original carton for possible future
use.
ToaddthefinishingtouchtoyournewRockfordFosgateimageorderyourRockford
wearables, which include everything from T-shirts and jackets to hats and
sunglasses.
To get a free brochure on Rockford Fosgate products and Rockford accessories,
pleasecall1-800-366-3565orFAX1-602-966-3983intheU.S.ForCanada,call
KorbonTradingat905-567-1920.ForinternationalordersFAX001-1-602-967-
8132 or call 001-1-602-967-3565.
PRACTICE SAFE SOUND™
CONTINUOUS EXPOSURE TO SOUND PRESSURE LEVELS OVER 100dB
MAY CAUSE PERMANENT HEARING LOSS. HIGH POWERED AUTO
SOUND SYSTEMS MAY PRODUCE SOUND PRESSURE LEVELS WELL
OVER 130dB. USE COMMON SENSE AND PRACTICE SAFE SOUND.
If, after reading your manual, you still have questions regarding this prod-
uct, we recommend that you see your Rockford Fosgate dealer. If you need
futher 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.
The serial number can be found on the outside of the box. Please be sure
torecorditinthespaceprovidedbelowasyourpermanentrecord. Thiswill
serve as verification of your factory warranty and become useful in recov-
ering your product if ever stolen.
Serial Number: __________________________________________
Model Number: ___________________________________

TABLE OF CONTENTS
Punch 2X, 3X and 5X Packing List................................................1
Introduction .................................................................................1
Operating Features .................................................................1
Design Features............................................................................2
1. Gold Plated RCA Jacks .......................................................3
2. Power Terminals ................................................................3
3. LED Power Indicator ..........................................................3
4. PROCards ..........................................................................3
5. Input Mode Switch (3X and 5X only) ..................................3
6. Phase Switch (3X and 5X only) ...........................................4
7. Mounting Holes .................................................................4
8. Fusing ................................................................................4
Installation Considerations ...........................................................5
Mounting and Wiring the Active Crossover ..................................6
B+ ..........................................................................................6
GND ......................................................................................6
REM .......................................................................................6
Input/Output Levels & Connections........................................6
Selecting the PROCards ...............................................................7
Using The Dual Filter (3X and 5X only) ........................................8
Installing the PROCards ...............................................................8
Filter Effects..................................................................................9
Wiring Diagrams........................................................................10
Appendix A - Building A Custom PROCard................................18
Butterworth Resistor Chart..........................................................19
Specifications.............................................................................20
Warranty....................................................................................21

PUNCH 2X/3X/5X PACKING LIST
Punch Electronic Crossover
Owner's Manual
This manual provides information on the features, installation and
operation of the Punch 2X, 3X and 5X Electronic Crossover. We
suggest you save this manual for future reference.
WestronglyrecommendyouhaveyourAuthorizedRockfordFosgate
Dealerinstallyournewactivecrossover.Ifyoudochoosetoinstallthe
unit yourself, please be sure to read the entire manual before begin-
ning your installation.
OPERATING FEATURES
The Punch 2X, 3X and 5X Electronic Crossovers provide for state-of-
the-art flexibility and performance demanded by today’s car audio
enthusiasts. Features include:
PROCards – 3-Way Selectable Electronic Crossover modules that
feature 12dB per octave filters that give precise crossover points and
allowforindividualselectionofhigh-pass,low-passorfullrangefilter
operation.
Dual Filtered, Non-Faded Output with Phase Reversal Switch (3X
and 5X only) allows you to create various pass band configurations.
Inaddition,thephasereversalswitchenablesyoutoeasilycorrectfor
phase problems that may be inherent in some system designs.
2 Channel Input on the Punch 2X
2 or 4-Channel Input Mode Switch (3X and 5X only) enables you to
select two (2) or four (4) channels of input.
4 Outputs on the Punch 2X
6 Outputs on the Punch 3X forFront, Rear and aDual-Filtered, Non-
Faded Output.
10OutputsonthePunch5X–Inadditiontotheoutputsfoundonthe
Punch 3X, the 5X also has Front and Rear Dual-Filtered Outputs for
creating additional pass band filter combinations.
GoldPlatedRCAInputandOutputJacksreducecorrosionwhichcan
cause signal deterioration over time.
– 1 –
INTRODUCTION

DESIGN FEATURES
REMOVING THE COVER
The design of the 2X, 3X and 5X allows the cover to be removed for
access to the crossovers and ease of installation. The cover can be
installedineitherdirectiontomatchtherestofthesystem.Thetopend
ofthecoverhastwotabswhichfitsnuglyintoslotsateitherendofthe
base.Caremustbetakennottobendthesecuringtabswhenremoving
thetopcover.Ascrewsecuresthecover.Removethisscrewtorelease
the cover for removal.
Punch 3X - Top Inside View
7
Front Input
Rear Input
1
3
2
Rem
B+
GND
7
Front Output
Dual Filtered Non-Faded Output
Rear Output
4
568
1
– 2 –
Rem
B+
GND
3
Input
1
1Output
Output
472
Punch 2X - Top Inside View 8

– 3 –
Punch 5X - Top Inside View
Rem
B+
GND
78
6
27
1Front Input
Rear Input
Front Output
Front Dual-Filtered Output
3
Dual Filtered Non-Faded Output
Rear Dual-Filtered Output
Rear Output
1
4
5
1. Gold Plated RCA Jacks
All input and output RCA jacks are gold plated. The gold plated
finish resists tarnishing and corrosion from interfering with the
signal quality.
2. Power Terminals
The B+, Rem and Gnd connections are made using gold plated
screwterminalsonthebarrier strip.Thegoldplatingresiststarnish
and corrosion and maintains connection integrity. The terminals
alloweasyconnectionofthepowerwiresthroughtheuseofforked
lugsorbarewireupto12gauge.Thebarriershelppreventshorting
from frayed wires.
3. LED Power Indicator
TheLED,locatedbytheinputjacks,providesavisualindicationof
the status of the crossover, lighting when the unit is turned on.
4. PROCards
Crossover filter functions are determined by the use of plug in
cards.Eachcardcanbeconfiguredforhigh-pass,low-passandfull
range operation. Resistors on each module determine the operat-
ing frequency.
5. Input Mode Switch (3X and 5X only)
When the input mode switch is in the two channel position the
front input jacks feed all the filters. When set to the four channel
position, the front and rear input jacks feed the respective filters.
Front and rear channels are summed for the non-faded filter.

6. Phase Switch (3X and 5X only)
The phase switch allows easy invertion polarity on the non-faded
output to optimize sound quality.
7. Mounting Holes
The crossover must be mounted on a flat surface. Two mounting
holes in the bottom are used to secure the crossover.
8. Fusing
Thecrossoverhasa1/2ampAGCfastblowpowerprotectionfuse.
If it is necessary to replace the fuse, use only the same type and
rating or the warranty may be voided.
– 4 –

INSTALLATION CONSIDERATIONS
This section focuses on some of the vehicle considerations for
installing your new Punch Electronic Crossover. Checking your
batteryandcurrentsoundsystem,aswellaspre-planningyoursystem
layout and best wiring routes will save installation time. When
deciding how to lay out your new system, be sure that each compo-
nent will be easily accessible for making adjustments.
Beforebeginninganyinstallation,besuretofollowthesesimplerules:
1. Be sure to carefully read and understand the instructions before
attempting to install the crossover.
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 electronic crossover in place.
4. Route all of the RCA cables close together and away from any
high current wires. this will help reduce noise.
5. Use high quality connectors for a reliable installation and to
minimize signal or power loss. See your Authorized Rockford
Fosgate Dealer for wire enhancements.
6. Thinkbeforeyoudrill! Becarefulnottocutordrillintogastanks,
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 for 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 a fuse holder 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.
Groundingconnectionsshouldbeasshortaspossibleandalways
be connectedtometalthatisweldedtothemainbody,orchassis,
of the vehicle. Use of a continuity meter will confirm a proper
ground. – 5 –

MOUNTING AND WIRING THE
ELECTRONIC CROSSOVERS
– 6 –
The information below describes the various considerations for
mountingand connectingthe activecrossovers. Foradditional infor-
mation see the wiring diagrams beginning on page 10.
Werecommendmountingthecrossoverasclosetotheamplifier(s)as
possible.
The B+ (Power) supplies power to the unit. Connect this terminal to
a constant +12 Volt power source by way of an in-line fuse.
TheGND (Power Ground)grounds theunit.Connect thisterminal to
thechassis ofthe vehicle.When grounding theunit besure toscrape
all paint from the metal to ensure a clean electrical connection.
The REM (Remote Turn-On) turns on the unit by way of a +12 Volt
supply source. Connect this terminal to the source unit’s “Amplifier”
or“AutoAntenna”lead,eitherofwhichwillgoto+12voltswhenever
the source unit is on.
IfyoursourceunitdoesnothaveeitheraRemoteoranAutoAntenna
lead (or if the Auto Antenna goes down during tape operation), we
recommend installing a switch to control the unit manually.
INPUT/OUTPUT LEVELS & CONNECTIONS
The Punch Electronic Crossovers are designed for preamp (input up
to2VRMS)levels.Netgaininthecrossoverisunity.(Outputlevelsare
equal to input levels.)
When connecting the input and output terminals be sure to use high
quality shielded interconnecting RCA cables.
• Connect source unit's OUTPUT jacks to the desired crossover
INPUT jacks.
• Connectthedesiredcrossover’sOUTPUT jackstotheAmplifier’s
INPUT jacks.

SELECTING THE PROCARDS
– 7 –
Punch 3X
100 Hz
100 Hz
Output
Output
100 Hz
100 Hz
100 Hz
Blank
Rear Output
Dual Filtered
Non-Faded Output
Front Output
Punch 2X
The Punch 2X is shipped with 100Hz cards. The 3X is shipped with
100Hz and blank programmable cards and the 5X is shipped with
100Hz,6.5kHzand blank programmablecards.The following cards
are available factory built from your Authorized Rockford Fosgate
Dealer.
XM50 50Hz
XM70 70Hz
XM100 100Hz
XM150 150Hz
XM200 200Hz
Eachcardcanbeusedforhigh-pass,low-passorfullrangeoperation.
ThemodeofoperationisdeterminedbytheorientationoftheProCard
in its socket. These same PROCards are used in other Rockford
Fosgate products.
The following illustrationsshow the PROCards shippedinthe Punch
2X, 3X and 5X. As configured, out of the box, each card is set for full
range operation.
XM275 275Hz
XM400 400Hz
XM4.5k 4.5kHz
XM6.5k 6.5kHz

Punch 5X
6.5kHz
100Hz
100Hz
100Hz
6.5kHz
Blank
Blank
Blank
Front Output
Front Dual
Filtered Output
Dual Filtered
Non-Faded Output
Rear Dual
Filtered Output
Rear Output
– 8 –
USING THE DUAL FILTER
The Punch 3X and the Punch 5X both have Dual Filter sections. The
Dual Filter is a two stage cascaded filter which uses two PROCards.
The first card determines the initial action and the second, the
subsequent action. The most common usage would be to use a low-
passmoduleinthefirstpositionfollowedbyahigh-passmoduleinthe
second to build a bandpass function. By using two cards of the same
actionat thesame frequency,thefilter slopeis increasedto 24dBper
octave.Bothsocketsmustbeusedforasimple12dBperoctavefilter.
Install the card in the second position for full range operation.
The operation of each filter section is determined by the use of plug
in cards. These multifunctional cards are available for a multitude of
operational frequencies, and their orientation in the socket deter-
mines their function. Each socket has a blank plastic side which
positions the card against the spring loaded contacts. The front, or
active,face of the cardis marked witharrowsto indicate whichedge
plugsintothesocket.Orientthecardwiththechosenfacetowardthe
contactsandplugitintothesocketoftheappropriatefilteroperation.
Therearfaceofthecardisforfullrangeoperationandeitheredgecan
be used.
INSTALLING THE PROCARDS

Example: The Punch 3X ships with three (3) 100Hz PROCards set in
the Full Range position. The crossover will pass through all 20Hz -
20kHz frequencies. The following diagram shows examples of the
types of response curves when programming for a High-Pass, Low-
Pass or Bandpass setting.
– 9 –
Gain
(dB)
20Hz 20kHz
Gain
(dB)
20Hz 20kHz
High-Pass Crossover Setting Response
Gain
(dB)
20Hz 20kHz
Low-Pass Crossover Setting Response
Bandpass Crossover Setting Response
(3X and 5X only)
Note: ThePunch3Xand5XDual-FilteredOutputChannelscontain ablank
crossover card. As with the Front and Rear Outputs, the default positioning
for these cards is set at Full Range.
FILTER EFFECTS

WIRING DIAGRAMS
– 10 –
®
®
®
®
Midrange/
Tweeter
2-Channel Amplifier
2-Channel Amplifier
Source Unit
2X Crossover
–
+
–
+
–
+
–
+
–
+
Midrange/
Woofer
4Ω
Low-Pass
High-Pass
High-Pass
@ 12dB/octave slope
Midrange/
Tweeter
Low-Pass
@ 12dB/octave slope
2
®
®
FIGURE 1
2X Basic System

– 11 –
2X - 2 Way with Passive Crosovers
®
®
®
®
Tweeter
2-Channel Amplifier
2-Channel Amplifier
Source Unit
2X Crossover
–
+
–
+
–
+
–
+
Woofer
4Ω
Low-Pass
High-Pass
High-Pass
@ 12dB/octave slope
Midrange
–
+
–
+
Low-Pass
@ 12dB/octave slope
Woofer
4Ω
Tweeter
Midrange
Passive
Crossover
Passive
Crossover
2
®
®
FIGURE 2

3X – 2-Way with Passive Crossovers
®
®
®
®
Tweeter
Tweeter
Midrange
Midrange
Subwoofer
2-Channel Amplifier
2-Channel Amplifier
2-Channel Amplifier
Source Unit
3x Crossover
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
®
®
High-Pass
Crossover
Tweeter
Tweeter
Midrange
Midrange
Subwoofer
0°
180°**
2
4*
High-Pass
Low-Pass
High-Pass
Low-Pass
Front High-Pass
@ 12dB/octave slope
Rear High-Pass
@ 12dB/octave slope
Summed Output
@ 24dB/octave slope
High-Pass
Crossover
High-Pass
Crossover
High-Pass
Crossover
3
®
®
*2 or 4 Channel can be selected if user desires fader capability.
** Try Phase Switch for summed output and set to position that sounds best.
FIGURE 3
– 12 –

®
®
Subwoofer
2-Channel Amplifier
2-Channel Amplifier
2-Channel Amplifier
Source Unit
3x Crossover
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
Tweeter
Tweeter
Midrange
Midrange
Subwoofer
High-Pass
Low-Pass
Low-Pass
High-Pass
Low-Pass
@ 12dB/octave slope
Bandpass Output
@ 12dB/octave slope
High-Pass Output
@ 12dB/octave slope
®
®
®
®
0°
180°**
2
4*
3
®
®
FIGURE 4
* Try Phase Switch for summed output and set to position that sounds best.
– 13 –
3X – 3-Way Basic System

3X – 2-Way with Amplifier's Active Crossover
®
®
Tweeter
Subwoofer
4-Channel Amplifier
with Crossover***
(High-Pass)
(Low-Pass)
2-Channel Amplifier
Source Unit
3x Crossover
–
+
–
+
–
+
–
+
–
+
High-Pass
Low-Pass
High-Pass
Low-Pass
Summed Output
@ 24dB/octave slope
Tweeter
Front High-Pass
@ 12dB/octave slope
Rear High-Pass
@ 12dB/octave slope
Front Bandpass
Both rolloffs @ 12dB/octave slope
Rear Bandpass
Both rolloffs @ 12dB/octave slope
®
DSM
®
4 4
–
+
–
+
Midrange
Midrange
Tweeter
4-Channel Amplifier
with Crossover***
(High-Pass)
(Low-Pass)
–
+
–
+
Tweeter
®
DSM
®
4 4
–
+
–
+
Midrange
Midrange
0°
180°**
2
4*
3
®
®
*2 or 4 Channel can be selected if user desires fader capability.
** Try Phase Switch for summed output and set to position that sounds best.
*** Additional filtering provided by internal crossovers in the amplifiers.
FIGURE 5
– 14 –

5X – Basic System
2-Channel Amplifier
–
+
–
+
®
®
Midrange
Midrange
Tweeter
2-Channel Amplifier
Source Unit
5x Crossover
–
+
–
+
Summed Output
@ 24dB/octave slope
Tweeter
Front High-Pass
@ 12dB/octave slope
Rear High-Pass
@ 12dB/octave slope
Front Bandpass
Both rolloffs @ 12dB/octave slope
High-Pass
Low-Pass
Low-Pass
Low-Pass
High-Pass
High-Pass
Low-Pass
High-Pass
®
®
2-Channel Amplifier
–
+
–
+
®
®
Midrange
Midrange
Front Bandpass
Both rolloffs @ 12dB/octave slope
Tweeter
2-Channel Amplifier
–
+
–
+
Tweeter
®
®
®
®
Subwoofer
2-Channel Amplifier
–
+
–
+
–
+
0°
180°**
2
4*
5
®
®
*2 or 4 Channel can be selected if user desires fader capability.
** Try Phase Switch for summed output and set to position that sounds best.
FIGURE 6
– 15 –

5X – 2-Way with 24dB Slopes
®
®
®
®
Midrange/Tweeter
Subwoofer
2-Channel Amplifier
2-Channel Amplifier
2-Channel Amplifier
Source Unit
5x Crossover
–
+
–
+
–
+
–
+
–
+
–
+
–
+
®
®
Summed Output
@ 24dB/octave slope
Midrange/Tweeter
Midrange/Tweeter
Midrange/Tweeter
Front High-Pass
@ 24dB/octave slope
Rear High-Pass
@ 24dB/octave slope
Not
Used
Not
Used
Not Used
High-Pass
Low-Pass
High-Pass
Not Used
High-Pass
Low-Pass
High-Pass
0°
180°**
2
4*
5
®
®
FIGURE 7
*2 or 4 Channel can be selected if user desires fader capability.
** Try Phase Switch for summed output and set to position that sounds best.
– 16 –

5X – 4-Way System
Tweeter
2-Channel Amplifier
Source Unit
5x Crossover
–
+
–
+
Tweeter
Low-Pass
@ 24dB/octave slope
High-Pass
@ 12dB/octave slope
Bandpass
Both rolloffs @ 12dB/octave slope
Not Used
Low-Pass
Low-Pass
Low-Pass
High-Pass
High-Pass
Low-Pass
High-Pass
®
®
2-Channel Amplifier
–
+
–
+
®
®
Midrange
Midrange
Bandpass
Both rolloffs @ 12dB/octave slope
Subwoofer
Not Used**
–
+
2-Channel Amplifier
–
+
–
+
®
®
Mid Bass
Mid Bass
2-Channel Amplifier
–
+
–
+
®
®
0°
180°**
2
4
5
®
®
FIGURE 8
*2 or 4 Channel can be selected if user desires fader capability.
** Try Phase Switch for summed output and set to position that sounds best.
– 17 –