Rockford Fosgate PWR-410 User manual

OWNER'SMANUAL

POWER WOOFERS
PWR-410 PWR-810
PWR-412 PWR-812
PWR-415 PWR-815


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
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,
pleasecall1-800-669-9899orFAX1-800-398-3985intheU.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
SOUNDSYSTEMSMAYPRODUCESOUNDPRESSURELEVELSWELLOVER
130dB. USE COMMON SENSE AND PRACTICE SAFE SOUND.
If, after reading your manual, you still have questions regarding this
product, 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
become useful in recovering your product if ever stolen and serve as
verification of your factory warranty.
Serial Number: _________________________________________
Model Number:___________________________________

TABLE OF CONTENTS
Punch Power Woofer Contents .........................................................1
Introduction ......................................................................................1
Design Features.................................................................................1
Cast Aluminum Basket ................................................................1
Oversized Magnet .......................................................................1
Binding Post Terminals................................................................1
AeroVent™ Pole Piece ................................................................2
Suspension ..................................................................................2
Voice Coil ...................................................................................2
Cone ...........................................................................................2
Low Frequency Speaker Systems .......................................................2
Using The Punch Power Woofer .......................................................2
Calculating Load Impedance.............................................................3
Calculating Volume ..........................................................................4
Building An Enclosure.......................................................................4
Specifications....................................................................................5
Warranty Information........................................................................6

PUNCH POWER WOOFER CONTENTS
1
Punch Power Woofer
Baseplate Label
This manual provides information on the construction, installation
andoperationofthePunchPowerWoofers.Wesuggestyousavethis
manual for future reference.
ThePunchPowerWoofersincorporatethebestavailablematerialsin
an innovative design that achieves solid low frequency performance
at high levels with outstanding power handling. From the oversized
magnet for high motor efficiency to the low resonant cast aluminum
basket no detail has been overlooked in designing the finest low
frequency speaker available. The materials and construction tech-
niques which make this possible are listed below.
INTRODUCTION
CastAluminumBasket–Thebasketisthesupportingstructureforthe
speakerand mustnotvibrateorflexwiththespeaker'soperation.The
low resonant cast aluminum basket used on the Punch Power
Woofers is strong enough to support the large magnet assembly and
will allow the speaker to operate at low frequencies without sonic
coloration.
Oversized Magnet – Oversized magnets are used for high efficiency
and improved power handling. The magnet is protected by an
attractive rubber cover which can be oriented to match the system
layout.
Binding Post Terminals – The amplifier connects to the speaker
through the use of gold-plated 5-way binding posts. These binding
posts are versatile connectors which allow for the connection of the
speakerswithavarietyofdifferentterminalssuchasbananaplugsor
spadelugs.Thebindingpostwillalsoacceptbarewireupto12gauge
and are spaced on 3/4" centers to accommodate dual banana plugs.
DESIGN FEATURES

2
AeroVent™PolePiece–TheAeroVent™providesventilationforthe
voice coil for improved power handling. The AeroVent™ is aerody-
namically shaped to allow passage of large amounts of air without
constricting the air flow which can cause whistling or turbulence
noise.
Suspension – The suspension holds the cone to the basket and
suspends the voice coil in the magnetic gap. The surround, which
supports the cone, is made from a dual laminate foam which
minimizes edge deterioration. The proprietary flat spider design
maintainslinearmotionofthevoicecoilevenathighlisteninglevels.
Voice Coil – The voice coil is wound on a large diameter anodized
aluminum former for highly efficient thermal transfer. The large
gauge high temperature copper wire allows operation at high power
levels.
Cone – The cone is made of a heavy and rigid paper material which
allows for very low frequency response and resists deforming when
driven at high power levels.
LOW FREQUENCY SPEAKER SYSTEMS
ThePunchPowerWoofersrequireanenclosuretoachieveoptimum
results.Theenclosureallowsthespeakertooperateatlowerfrequen-
cies with improved power handling. The two most commonly used
types of low frequency speaker systems are acoustic suspension and
bass reflex. The acoustic suspension enclosure, commonly referred
to as a sealed box, relies upon the changing air pressure in a tightly
sealedchamberforitsoperation.Thebassreflex,commonlyreferred
toasaportedenclosure,usesaventinsertedintotheboxwhichtakes
overforthespeakeratadesiredtunedfrequencywhichisdetermined
bytheinternalvolumeoftheenclosureandthesizeofthevent used.
The Punch Power Woofers will yield optimum performance in a
small, ported enclosure.
USING THE PUNCH POWER WOOFERS
Speakers are built in different sizes to optimize their performance in
different frequency bands. Crossovers are used to route the different
frequencybandsforeachspeaker.Therearetwooperationaltypesof
crossover: active and passive. An active crossover is an electronic
filterwhichisplacedbeforetheamplifierandseparatesthesignalfed
todifferent amplifiersinthesystem.Apassivecrossoverispositioned

after the amplifier and separates the signal fed to each speaker in the
system.Activecrossoversoffertheaccuracyandflexibilityneededfor
asophisticatedsystemandareusedincomplexmultipleampdesigns.
Passive crossovers (capacitors and inductors) allow the use of mul-
tiple speakers in a simple system which can easily be expanded over
time. We recommend using a 6dB per octave, 100Hz low-pass
crossover for the Punch Power Woofers when used with a passive
system.
To customize the installation, try adjusting the crossover point one
octave up or down to optimize the system staging.
3
CALCULATING LOAD IMPEDANCE
The Punch Power Woofers are used for the sub-bass region, those
frequencies below 100Hz. This is the foundation for the music and
the frequency range you feel. Before selecting the passive crossover
itisnecessarytocalculatetheloadimpedanceofthespeakersystem.
In a series circuit the impedance is determined by the formula:
Rt= R1+ R2+ R3+ etc.
In a parallel circuit the impedance is determined by the formula:
11111
RtR1R2R3R4
Where Rtis the total speaker load and R1, R2, etc. represent each
speaker in the system.
The crossover is connected in line to the positive terminal of the
speakersystem. Thecrossovers areavailable fromAuthorized Rock-
ford Fosgate Dealers.
= + + + + etc.

4
CALCULATING VOLUME
Calculating volume is merely a matter of measuring the dimensions
in inches and using the formula: Volume = Height x Width x Depth.
Theresult is incubicinches, convertthisto cubic feetby dividing by
1,728(thenumberofcubicinchesinacubicfoot).Iftwofacingsides
areofunevenlength,addthemtogetheranddividebytwototakethe
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
internalvolume.Theamountofairdisplacedbyeachmodelislisted
on the specification sheet and should also be subtracted from the
gross volume calculation.
BUILDING ANENCLOSURE
Toworkproperly,thewallsoftheenclosuremustberigidandnotflex
when subjected to the high pressures generated by the speaker's
operation. We recommend using 3/4" thick high density particle
board or medium density fiberboard (MDF), which are available at
most building supply stores. For a large box, internal bracing is
needed for reinforcement. The joints should be glued (use non-
flammable carpenter glue) and secured with either nails or screws.
Internally the joints should be sealed with silicon to prevent air
leaking.BecausethehighdensityparticleboardandMDFareporous
materials, it is suggested to seal the outside enclosure walls with
polyurethane.Ideally,theportshouldbelocatedonthesamefaceas
the speaker and positioned at least one port diameter away from the
side and back walls.
In Conclusion
Special care has been taken to ensure your satisfaction with the
Punch Power Woofers. The materials and workmanship have been
carefullyselectedtoguaranteeperformanceequaltotheneedsofthe
most demanding conditions. If you have any further questions or
advanced system needs, your Authorized Rockford Fosgate Dealer
will be happy to assist you.

Model PWR-410 PWR-810 PWR-412 PWR-812 PWR-415 PWR-815
Nom. Imped. 4 8 4 8 4 8
FS (Hz) 30 33 25 27 24 25
RE (Ohm) 3.5 7 3.4 6.8 3.4 6.8
LE (mH) 1.0 1.5 1.3 1.8 1.3 1.8
QMS 2.11 2.1 2.89 2.8 3.2 2.86
QES 0.24 0.32 0.28 0.36 0.31 0.34
QTS 0.22 0.28 0.26 0.31 0.28 0.31
VAS (cu.ft) 2.507 2.507 4.697 4.697 11.795 11.795
VAS (liter) 71 71 133 133 334 334
Power (Watts RMS) 300 300 600 600 600 600
Power (Watts Peak) 600 600 1200 1200 1200 1200
SPL (dB @ 1w/1m) 91 91 91 91 94 94
X-MAX (inches) 0.3 0.3 0.24 0.24 0.24 0.24
X-MAX (mm) 7.7 7.7 6.2 6.2 6.2 6.2
Port Diameter (in.) 4444 55
Port Length (in.) 11 11 10.75 10.75 7 7
Rec. Box Vol. (cu. ft.) 1.5 1.5 2 2 4 4
Cutoff-F3 (Hz) 37.6 41.4 36.4 39.3 38.6 40.2
Spk. Dis. Outside (cu. ft.) 0.12 0.12 0.21 0.21 0.25 0.25
Spk. Dis. Inside (cu. ft.) 0.13 0.13 0.22 0.22 0.26 0.26
Mntg. Dia. (in.) 9-19/32 9-19/32 10-15/16 10-15/16 13-29/32 13-29/32
Mntg. Depth (in.) 4-7/8 4-7/8 5-19/32 5-19/32 6-29/32 6-29/32
SPECIFICATIONS
5

Rockford Fosgate warrants all loudspeakers to the original purchaser for a period
of two (2) years parts and labor, providing the product was purchased from an
Authorized Rockford Fosgate Dealer. Speakers found to be defective during the
warranty period will be repaired or replaced (with a product deemed to be
equivalent) at Rockford Fosgate’s discretion. Repaired or replaced speakers will
cover the balance of the original warranty period only. Warranty appliesonly to
original purchaser and is non-transferable. Warranty does not cover abuse or
installation error. If a determination is made that the product has been abused or
is out of the warranty period, it will be repaired, exchanged, and billed. Parts not
coveredunderwarrantywillberepairedorreplacedandbilled.Forspeakerboxes,
please return the speaker only. Serial number must be intact to obtain warranty.
Speakers must be returned prepaid to Grand Rapids, Michigan.
GENERAL
Electronicsandspeakerwarrantiesdonotcoveranyappearanceitem,anycostor
expenserelatedtotheremovalorreinstallationoftheproduct,anyaccessoryused
inconjunction with theproduct, damageto theproductresulting fromalteration,
accident,misuse or abuse,or improperinstallation. Thiswarrantydoes notapply
ifthepartsorlabor,whichwouldotherwisebeprovidedwithoutchargeunderthis
warranty, are obtained from any source other than Rockford Fosgate or an
Authorized Rockford Fosgate Service Center.
The warranty is the only express warranty and does not create any implied
warranties. Rockford Fosgate limits its obligations under any implied warranties
understatelawstoaperiodnottoexceedthewrittenwarrantyperiod.Somestates
do not allow limitation on how long an implied warranty lasts, so the above
limitationmaynotapply.ThiswarrantyappliesonlytoproductssoldintheUnited
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
consumerspecificlegalrights,andtheconsumermayhaveotherrightswhichvary
from state to state.
Adefective product mustbe shippedprepaid tothe Authorized RockfordFosgate
Dealer from which the consumer purchased the product or to the address below,
in the original factory carton or equivalent. Any shipping loss or damage will be
borne by the consumer or the consumer’s shipper. A consumer returning a
product to the factory should call [phone] for a Return Authorization
Number. All shipments shall be clearly marked with the Return Authorization
Number on the outside of the shipping carton.
Rockford Fosgate:
609 Myrtle N.W.
Grand Rapids, MI 49504 (Receiving-speakers)
WARRANTY INFORMATION

NOTES