Rockford Fosgate S1-408 User's Manual
Contents
1. Series W 0 0 FERS 51 408 51 808 51 410 51 810 51 412 51 812 51 415 51 815 O WNER S MANUAL P Piockford fosqate Dear Customer Congratulations on your purchase of America s finest brand of car audio compo nents At Rockford Fosgatewearecommitted 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 darity 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 Fosgateimageorder your Rockford accessories which indude everything from T shirts and jackets to hats and sunglasses To get a free brochure on Rockford Fosgate products and Rockford accessories pleasecall 1 800 669 9899 or FAX 1 800 398 3985 in theU S For Canada call Korbon Tradingat905 567 1920 For international orders FAX 001 1 602 967 8132 or call 001 1 602 967 3565 PRACTICE SAFE SOUND CONTINUOUS EXPOSURE TO SOUND PRESSURE LEVELS O VER 100dB MAY CAUSE PERMANENT HEARING LOSS HIGH POWERED AUTO SOUND SYSTEM SM AY PRO DU CESO U N D PRESSU RELEVELSW ELL O V2. ER 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 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 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 become useful in recovering your product if ever stolen and serve as verification of your factory warranty Serial Number Model Number TABLE OF CONTENTS Series 1 Woofer Contents Introd ale Design Features T VOICECON 2 uei e e Red a Ea Vented Pole Piece ecd ee ioi PVA Treated sese esen eee SUSPENSION cu eS s eine es RR OO P CREER u aus Dual Input Terminals la Low Frequency Speaker Systems n Using the Series 1 Woofer eee Calculating Load Impedance seems Calculating Volume Building An Enclosure ente Ben Sp cifiCali Oris cei pe ek Den eier Warranty Information sees cee eee emnes SERIES 1 WooreR CONTENTS Series 1 Woofer Owner s Manual INTRODUCTION This manual contains information on the construction installation and operation of the Series 1 low frequency
3. 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 The crossovers are available from Authorized Rock ford Fosgate D ealers CALCULATING VOLUME Calculating volume is merely a matter of measuring the dimensions in inches and using the formula Volume H eight x Width x Depth The resultisin cubic inches Convert this to cubic feet by dividing by 1 728 the number of cubic inchesin a cubic foot If two facing sides are of uneven length add them together and divide by two to getthe 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 determines 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 calcula tion BUILDING An ENCLOSURE To work properly the walls of the enclosure mustberigid and notflex 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
4. VA also reduces damage from the harsh environmental conditions typi cal of a car interior Suspension The suspension of a speaker isthe part ofthe speaker which controls the motion of the cone This is what changes the electrical energy to sound energy The surround is constructed from a dual laminated foam which ensures linear motion of the cone while resisting mechanical and environmental damage Dual Input Terminals To facilitate hook up in multiple driver configurations each positive and negative terminal hastwo connect ing lugs The positive terminal is identified by a dot which also indicates the speaker simpedance A red dotis used on a 8Q speaker a violet dot on a 4Q speaker Low FREQUENCY SPEAKER SYSTEMS The Series 1 Woofers require an enclosure to achieve optimum results The enclosure allows the speaker to operate at lower frequen 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 sealed chamber of its operation The bass reflex commonly referred to asa ported enclosure uses a ventinserted into the box which takes over for the speaker ata desired frequency which is determined by the internal volume of the enclosure and the size of the vent used The Series 1 Woofer will yield optimum performance in a ported encl
5. ate lawsto 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 should 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 NOTES NOTES 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 8975 7 94
6. o sure Using THE SERIES 1 Woorers 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 crossover active and passive An active crossover is an electronic filter which 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 speakersin a simple system which can easily be expanded over time We recommend using a 6dB per octave 100Hz low pass crossover for the Series 1 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 2 CALCULATING LOAD IMPEDANCE The Series 1 W oofers are used for the sub bass region those frequen cies below 100Hz This is the foundation for the music and the frequency range you feel Before selecting the passive crossover itis necessary to calculate the load impedance of the speaker system In a series circuit the impedance is determined by the formula In a parallel circuit the
7. orized 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 it will 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 ofthe 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 notapply ifthepartsorlabor 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 Rockford Fosgate limits its obligations under any implied warranties under st
8. should be glued using non flammable carpenter s glue and secured with either nails or screws Internally the joints should be sealed with silicon to prevent air from leaking Because the high density particle board and M DF are porous materials it is suggested to seal the outside enclosure walls with polyurethane Ideally the port should be located on the same face as 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 Series 1 W oofers The materials and workmanship have been carefully se lected to guarantee performance equal to the needs of the most demanding conditions If you have any further questions or advanced system needs your Authorized Rockford Fosgate Dealer will be happy to assist you ece e 9 ece e 9 S v v S v v zeze ZE 6Z E Cul uideg uw Lus Svro 999 oo 900 Be Ls sr t NOSE v vot 0 0 soo ef e 2 oee WT MT gp 795 Creed SPEM Mod SINY SPEM az SVA 08775 SVA v E OT 4S9 5 0 CC C 50160 Hu 31 uuu O JY ZH 53 oouepeduu WON PPOW N T SNOILVD141D34S WARRANTY INFORMATION 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 Auth
9. speakers W erecommend you keep this manual for future reference The Series 1 Woofers are a full line of low frequency drivers ranging in size from 8 to 15 in diameter System compatibility is ensured by offering each size atfour and eightohm impedance Designed to offer Rockford Fosgate quality in an affordable speaker the Series 1 W oofers offer the beginning car stereo enthusiast an opportunity to enjoy solid low frequency music reproduction O ur engineers have selected materials and techniques used in building our speakers which offer performance and reliability comparable to other speakers selling for much more DESIGN FEATURES The following section describes the methods used in constructing the Series 1 Woofers and how each was optimized Black Anodized Aluminum Voice Coil Former To improve the reliability of the voice coil it is wound on a black anodized aluminum former Because aluminum isan efficientthermal conduc tor it keeps heat from concentrating in the voice coil during normal use Vented Pole Piece To allow operation at reasonably high power levels ventilation is needed Thisis done through the use of a vented pole piece The venting allows fresh air to circulate and remove the built up heat form the voice coil assembly PVA Treated Paper Cone The cone is constructed from a light weight rigid paper material The cone is treated with Polyvinyl Acetate which lowersthe resonance and reducesdistortion The P
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