Rockford Fosgate Punch DVC RFP-1208 User manual

® ®
car audio
fanatics
for
punch
®
RFP-1208
RFP-1210
RFP-1212
RFP-1215
DVC

Dear Customer,
Congratulationsonyourpurchaseoftheworld'sfinestbrandofcaraudiospeakers. At
Rockford Fosgate we are fanatics about musical reproduction at its best, and we are
pleasedyouchoseourproduct.Throughyearsofengineeringexpertise,handcraftsman-
ship 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.
Greatproductandcompetentinstallations are onlyapieceofthe puzzle whenitcomes
to your system. Make sure that your installer is using 100% authentic installation
accessories from Connecting Punch in your installation. Connecting Punch has
everything from RCA cables and speaker wire to Power line and battery connectors.
Insist on it! After all, your new system deserves nothing but the best.
To add the finishing touch to your new Rockford Fosgate image order your Rockford
wearables,which include everything from T-shirtsand jackets to hats andsunglasses.
TogetafreebrochureonRockfordFosgateproductsandRockfordwearables,intheU.S.
call 602-967-3565 or FAX [phone]. For all other countries, call +001-602-
967-3565 or FAX [phone].
The serial number can be found on the outside of the box. Please record it in
the space provided below as your permanent record. This will serve as
verificationofyourfactorywarrantyandmaybecomeusefulinrecoveringyour
speaker if it is ever stolen.
Serial Number: ________________________________
Model Number:________________________________
If, after reading your manual, you still have questions regarding this product,
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 OVER
100dBMAY CAUSE PERMANENT HEARING LOSS. HIGH
POWERED AUTOSOUND SYSTEMS MAY PRODUCE SOUND
PRESSURE LEVELS WELL OVER 130dB. USE COMMON SENSE
AND PRACTICE SAFE SOUND.

TABLE OF CONTENTS
Introduction ............................................................................................. 1
DVC Woofer Contents ............................................................................. 1
Technical Design Features ....................................................................... 1
Installation ...............................................................................................4
Recommended Enclosures.................................................................. 4
Building an Enclosure......................................................................... 6
Calculating Volume............................................................................6
Subwoofer Crossovers ........................................................................ 6
Wiring Configurations ........................................................................ 7
Specifications........................................................................................... 8
Warranty Information............................................................................... 9
International Information........................................................................ 10
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
tothe InstallationSection ofthismanualorrefertotheiconlistedbelow.
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
newways toimprove our product,this informationis subjectto change
without notice.
G ETTING S TARTED
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Sections marked
INSTALLATION
include “slam dunk”
assembly and wiring
directions

– 1 –
INTRODUCTION
Punch DVC Woofer
Installation & Owner's Manual
TECHNICAL DESIGN FEATURES
The Punch Dual Voice Coil woofers are low frequency drivers
designed primarily for usein small, sealed or vented enclosures. The
dual voice coil design allows low impedance loads to be configured
for optimizing the performance of Punch Power 50.1 and 50.2
amplifiers. By utilizing the latest materials and construction tech-
niques, we are able to offer a speaker with optimized low frequency
response while requiring a minimum of operating space.
DVC WOOFER CONTENTS
◆Stamped Basket
The Dual Voice Coil Woofers use a stamped Cold Rolled Steel basket
which is rigid and lightweight. The basket is finished in a corrosive
resistant power coated applied process used in many automotive
applications.
THE RESULT: A lightweight and rigid woofer.
◆PVA Cone
The cone material used is spruce pulp paper. This provides the
necessarycombination ofweight andstrength andallows high levels
of output without cone break-up. The cone is treated with a water
resistantPolyVinylAcetate(PVA) Emulsion whichincreasesthecone
rigidity and lowers distortion.
THE RESULT: Increases cone rigidity and lowers distortion.

– 2 –
◆Santoprene Rubber Surround
The santoprene material is resilient to temperature variations and
provides a consistent support necessary for the linear motion of the
speakercone.Inaddition,theinherentdampingcapabilitieseliminates
thetransmissionofsonicdisturbancesbetweenthe cone and the frame
of the speaker. This greatly improves the clarity of the speaker's
frequency response.
THE RESULT: Improves speaker's frequency response.
◆Flat Spider
The speaker's linear compliance is balanced through the use of a
“proprietary” flat spider design. A flat spider provides symmetrical
control of the voice coil through its cone excursion. Linear cone
excursion reduces harmonic distortion for improved sound quality.
THERESULT:Reducesmechanicaldistortionforbettersoundquality.
◆Powder Coat Finish
Powder coating has long been the industry standard for durability in
protective metal finishes. A dry powder (non-aerosol) is electrostati-
callyappliedtothemetaland“bakedontoprovideahard“shell-like”
finish. As an additional benefit, powder coating is the only finishing
process that releases no toxic chemicals into our ozone.
THE RESULT: A durable and “earth friendly” metal finish.
◆Inverted Dust Cap
Theuseoftheinverteddustcapservestoincreasetheconerigidityand
improve the power handling by forcing more air through the voice
coil.
THE RESULT: Increases cone rigidity, smooths frequency response
andpreventsyourfriendsfromfeelingobligatedtoinvertthemforyou.

– 3 –
◆Aluminum Voice Coil Former
Thevoicecoilformerisblack,anodizedaluminumforhighlyefficient
thermal transfer. This allows winding high temperature copper wire
in multiple layers for improved efficiency.
THE RESULT: Improves power handling by efficiently dissipating
heat.
◆Hyper-Extended Pole Piece
The pole piece has been extended to provide a more linear magnetic
field for the operation of the woofer. This lowers distortion and
provides the woofer with better low frequency response.
THE RESULT: Lowers distortion and provides better low frequency
response.
◆Vented Bumped Back Plate
The back plate has been stepped deeper to allow the woofer more
excursionwithoutbottomingout.Thisenablesthespeakertobeused
in a smaller enclosure. Additionally, the back plate is vented with a
radiused aerodynamic back vent which efficiently and quietly circu-
lates cool air around the voice coil.
THE RESULT: More excursion and increased power handling.
◆Dual Voice Coils
The dual voice coil design of the speaker allows a variety of imped-
ance loads to be configured. A single woofer can be wired for a 2Ω
load and a pair of woofers can be wired for either a 4Ωor 1Ωload.
These configurations allow a multitude of amplifiers to be used with
the Punch DVC.
THE RESULT: Allows multiple wiring configurations.

– 4 –
INSTALLATION
Recommended Enclosures
Fb = Tuning Frequency Pd = Inside Port Diameter PI = Total Port Length
Fb=35Hz
Pd=2.5" (6.35cm)
PI=15.25" (38.73cm)
Fb=35Hz
Pd=3" (7.62cm)
PI=13.25" (33.65cm)
Recommended Ported 1.0ft3(28.32L)
Recommended Sealed .30ft3(8.50L)
Punch DVC 8"
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Recommended Ported .625ft3(17.70L)
H = 11"
(27.94cm)
W = 11"
(27.94cm)
DVC
D = 8"
(20.32cm)
Range in Cubic Feet
1 2 3 4 5 6
0.3
1.50
.375
.25
D = 8"
(20.32cm)
H = 11"
(27.94cm)
W = 19.75"
(50.16cm)
DVC
Range in Cubic Feet
1 2 3 4 5 6
.50
.625
.03
Punch DVC 10"
Recommended Sealed .625ft3(17.70L)
D = 10"
(25.40cm)
H = 14"
(35.56cm)
W = 13"
(33.02cm)
DVC
Range in Cubic Feet
1 2 3 4 5 6
0.3
.625
.50 .75
D = 13.5"
(34.29cm)
H = 13"
(33.02cm)
W = 15"
(38.1cm)
DVC
Range in Cubic Feet
1 2 3 4 5 6
0.3
.75

– 5 –
Fb = Tuning Frequency Pd = Inside Port Diameter PI = Total Port Length
Fb=30Hz
Pd=2 x 2.5" (2 x 6.35cm)
PI=12" (30.48cm)
Fb=30Hz
Pd=2 x 3" (2 x 7.62cm)
PI=15.5" (39.37cm)
Recommended Ported 2.25ft3(63.71L)
Recommended Sealed 1.25ft3(35.40L)
Punch DVC 12"
Recommended Ported 2.0ft3(56.63L)
Punch DVC 15"
Recommended Sealed 1.5ft3(42.47L)
D = 12"
(30.48cm)
H = 17"
(43.18cm)
W = 19"
(48.26cm)
DVC
Range in Cubic Feet
1 2 3 4 5 6
0.3
1.50 1.75
D = 17.5"
(44.45cm)
H = 17"
(43.18cm)
W = 19"
(48.26cm)
DVC
Range in Cubic Feet
1 2 3 4 5 6
0.3
1.75
2.25
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D = 12"
(30.48cm)
H = 14"
(35.56cm)
W = 19-3/4"
(50.17cm)
DVC
Range in Cubic Feet
1 2 3 4 5 6
0.3
1.50
1.25
D = 14"
(35.56cm)
H = 18"
(45.72cm)
W = 20.5"
(52.07cm)
DVC
Range in Cubic Feet
1 2 3 4 5 6
0.3
1.50

– 6 –
Building an Enclosure
Toworkproperly,thewallsoftheenclosuremustberigidandnotflex
when subjected to the high pressures generated by the speaker's
operation. For optimum performance, we recommend using 3/4"
MDF (Medium Density Fiberboard) and internal bracing. The enclo-
sure should be glued together with nails or screws. Because MDF is
porous, it is suggested to seal the outside walls with polyurethane.
Calculating Volume
Calculating volume is merely a matter of measuring the dimensions
in inches and using the formula:
1728"
Height x Width x Depth
Box Volume =
(cubic feet)
Iftwofacingsidesareofunevenlength,addthemtogetheranddivide
by two to take the average. Using this number will give you the
volume without the necessity of calculating the box in sections and
adding the sections together. The thickness of the baffle material
reduces the internal volume so this must be subtracted from the
outside dimensions to determine the internal volume. The speaker
itself also reduces the internal volume. The amount of air displaced
by each model is listed on the specification sheet and should also be
subtracted from the gross volume calculation.
Subwoofer Crossovers
There are two operational types of crossovers, passive and active.
Passivecrossovers(coilsorinductors)areplacedonthespeakerleads
between the amplifier and speaker. An active crossover is an elec-
tronic filter which separates the audio signal fed to different amplifi-
ers. For optimum subwoofer performance, we recommend using an
active 80-100Hz low-pass crossover at 12dB/octave.
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Wiring Configurations
Three configurations for connecting speakers to an amplifier are
Series, Parallel, and Series-Parallel wiring. A Series configuration
consists of two or more speakers (voice coil) wired in an string (end
to end). A Parallel configuration consists of two or more speakers
(voice coils) wired with the common terminals connected across
each other. A Series-Parallel configuration is a combination of both
methods. Determine which method will be compatible with your
amplifier.
RT= R1+ R2+ R3+ etc. 1 1 1 1 1
=++++etc.
RTR1R2R3R4
Series Wiring Parallel Wiring
•RTindicates the total speaker load
•R1, R2,etc. indicates each speaker in the system
•Purple dot indicates “+” terminal of 4 ohm speaker
4Ωx 2
+ –
1Ω
+
–+ –
4Ωx 2
+
–+ –
4Ωx 2
+ –
4Ω
+
–+ –
4Ωx 2
+
–+ –
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4Ωx 2
+ –
8Ω
4Ωx 2
+ –
2Ω
+
–+
–
+
–
+
–
Series/Parallel Wiring