Rockford Fosgate RFA-412 User's Manual
Contents
1. Specifi cat ONS atari dale dawned Warranty Information cece cee ceeeeteeecie AUDIOPHILE WooFER CONTENTS Punch Audiophile W oofer Punch Audiophile W oofer manual INTRODUCTION This manual provides information on the construction installation and operation of the Punch Audiophile W oofers W e suggest you save this manual for future reference The Punch Audiophile woofers are a full line of low frequency drivers in 8 10 and 12 sizes in 4 or 8 ohm impedance They are designed for use primarily in small sealed enclosures By utilizing the latest materials and construction techniques we are able to offer a speaker with good low frequency response while requiring a minimum of operating space DESIGN FEATURES Cone The cone material used is spruce pulp paper reinforced with Kevlar fiber 8 and 10 only This provides the necessary combi nation of weight and strength and allowshigh levelsof output without cone break up The cone is treated with a water resistant Polyvinyl Acetate Emulsion PVA which increases the cone rigidity and lowers distortion Vented Pole Piece To allow operation at reasonably high power levels ventilation is needed This is done through the use of a vented pole piece The venting allows fresh air to circulate and remove the built2. AUDIOPHILE WOOFERS RFA 408 RFA 808 RFA 410 RFA 810 RFA 412 RFA 812 Owner s MANUAL P eckiord fosqate Dear Customer Congratulations on your purchase of America s finest brand of car audio compo nents At Rockford Fosgate we arecommitted to musical reproduction at its best and wearepleased you choseour 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 trainingthrough Rockford Technical TrainingInstitute RTTI Please read your warranty and retain your receipt and original carton for possiblefuture use Toaddthefinishingtouch to your new Rockford Fosgateimage order 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 please call 1 800 669 9899 or FAX 1 602 966 3983 in theU S For Canada call Korbon Tradingat 905 567 1920 Forinternational ordersFAX 001 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 SYSTEM SM AY PRO DU CESO U N D PRESSU RELEVELSW ELL O
3. 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 W arranty applies only 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 itwill be repaired exchanged and billed Parts not covered under warranty will be repaired orreplaced and billed For speaker boxes please return the speaker only Serial number must be intact to obtain warranty Speakers must be returned prepaid to Grand Rapids Michigan GENERAL Electronics and speaker warranties do not cover any appearance item any costor 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 ifthe parts orlabor 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 The warranty is the only express warranty and does not create any implied warranties R
4. is suggested to seal the outside enclosure walls with polyurethane 4 Cut out two pieces of each panel using 3 4 MDF RFA 408 808 10 5 x 16 5 4 75 x 16 5 4 75 x 9 RFA 410 810 12 75 x 19 75 6 25 x 19 75 6 25 x 11 25 RFA 412 812 13 5 x 20 5 7 75 x 20 5 7 75 x 12 In Conclusion Special care has been taken to ensure your satisfaction with the Punch Audiophile Woofers The materials and workmanship have been carefully selected to guarantee performance equal to the needs of the most demanding conditions If you have any further questions oradvanced system needs your Authorized Rockford Fosgate D ealer will be happy to assist you 9 9 EYII EYII o r rtz uw daa BWN 8 T S 8 T S Z T v Ziv 8 S 8 S E Cu daa uw v 6LZ v 6LZ T 8EZ T 8EZ Y LST Y L8T uw eia UW Om um 8 6 8 6 S E L S E L Cu uw zro soo soo soo soo m epsul sia ads ee CEE e ve se re oe mome ese o o ost o eme ox 511 SYA seve acre se se vaz mz GM SYA sro seo sco zso zro a A PR E r x r Padul WON 808 5 80 1 i ee 5 98 WARRANTY INFORMATION Rockford Fosgate warrants all loudspeakers to the original purchaser for a period of two 2
5. up heat from the voice coil assembly Suspension The suspension holds the cone to the basket and supports the voice coil in the magnetic gap The suspension should allow the cone to move in and out freely but not allow side to side motion The Punch Audiophile woofers all use a Nitrile rubber surround for the front and a flat spider design for the rear This combination takes full advantage of the Kevlar cone s stiffness allowing clean uncolored reproduction Kevlar is a registered trademark of E I DuPont de Nemours Co Inc Lf 5 Voice Coil The construction of the voice coil is designed to maximize the speaker s power handling The wire used is high temperature copper wound in multiple layers on a black anodized aluminum former The wire will withstand high temperatures while the former conducts heat away from the coil Powder Coated Basket The stamped steel baskets of the Punch Audiophile woofers are finished with a powder coat process This good looking finish damps the basket resonance preventing basket vibration from coloring the sound Unrelated to the sonic perfor mance of the speakers but equally important the powder coating used is environmentally friendly since no toxic chemicals are re leased into the atmosphere during the process Epoxy Filled Inverted D ust Caps The inverted dust cap provides a flatter power response and rigidity to the cone Epoxy filling adds mass to ensure the high performance in
6. OLUME Calculating volume is merely a matter of measuring the dimensions in inches and using the formula Volume H eight x Width x Depth The result is in cubic inches Convert this to cubic feet by dividing by 1 728 the number of cubic inches in a cubic foot If two facing sides are of uneven length add them together and divide by two to take the average U sing thisnumber 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 dimen sions 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 BUILDING AN ENCLOSURE To work properly the walls of the enclosure must be rigid and not flex 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 and secured with either nails or screws internally the joints should be sealed with silicon to prevent air leaking Wood glue works best Because the high density particle board and MDF are porous materials it
7. VER 130dB USE COMMON SEN SE 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 to record it in thespace provided below asyour permanent record Thiswill serve as verification of your factory warranty and could become useful in recovering your product if ever stolen Serial Number Model Number TABLE CONTENTS Punch Audiophile W oofer Contents eseese ord aeaa ieai Vented Pole Pieces S SPENS ON and av tend ated VOICE ee Powder Coated Epoxy Filled Inverted Dust Caps creeeren Dual leaden Low Frequency 5 68 6 5 Using the Punch Audiophile Woofers sssrinin Calculating Load IMpedance cece Calculating Volume ee aie Building An
8. hich is placed before the amplifier and separates the signal fed to different amplifiers in the system A passive crossover is positioned after the amplifier and separates the signal fed to each speaker in the system Active crossovers offer the accuracy and flexibility needed for a sophisticated system and are used in complex multiple amp designs Passive crossovers capacitors and inductors allow the use of multiple 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 Audiophile W oofers 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 CALCULATING LOAD IMPEDANCE The Punch Audiophile W oofers are used for the sub bass region those frequencies below 100H z This is the foundation forthe music and the frequency range you feel Before selecting the passive crossover it is necessary to calculate the load impedance of the speaker system In a series circuit the impedance is determined by the formula R R R R etc In a parallel circuit the impedance is determined by the formula Where R is the total speaker load and R etc represent each speaker in the system The crossover is connected in line to the positive terminal of the speaker system Crossovers are available from Authorized Rockford Fosgate Dealers CALCULATING V
9. ockford Fosgate limits its obligations under any implied warranties under state laws to a period notto exceed the written warranty period Some states do not allow limitation on how long an implied warranty lasts so the above limitation may notapply This warranty applies only to products sold in the U nited States of America or its possessions For warranty outside the U S A please contact the nearest Authorized Rockford Fosgate D ealer This warranty gives the consumer specific legal rights and the consumer may have other rights which 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 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 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 Rockford Corporation 609 Myrtle N W Grand Rapids MI 49504 Receiving speakers Rockford Fosgate Rockford Corporation 546 South Rockford Drive Tempe Arizona 85281 U S A In U S A 602 967 3565 In Canada call Korbon 905 567 1920 In Europe Fax 49 4207 801250 In Japan Fax 81 559 79 1265 CP 9050 7 94
10. small sealed boxes Dual Input Terminals To facilitate hook up in multiple driver configurations each positive and negative terminal has two connect ing lugs The positive terminal is identified by a dot which also indicates the speaker s impedance A red dot is used on an 8Q speaker a violet dot on a 4Q speaker Low FREQUENCY SPEAKER SYSTEMS The Punch Audiophile woofers require an enclosure to achieve optimum results The enclosure allows the speaker to operate atlower frequencies with improved power handling The two mostcommonly 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 sealed chamber of its operation The bass reflex commonly referred to as a ported enclosure uses a vent inserted into the box which takes over for the speaker at a desired frequency which is determined by theinternal volume of the enclosure and the size of the ventused The Punch Audiophile woofers will yield optimum perfor mance in a small sealed enclosure Usinc THE AUDIOPHILE WOorFERS Speakers are built in different sizes to optimize their performance in different frequency bands Crossovers are used to route the different frequency bands for each appropriate speaker There are two opera tional types of crossovers active and passive An active crossover is an electronic filter w
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