Electro-Voice E-V Four-A User's Manual
Contents
1. finishing nalis If the pins were driven into the enclosure flush with the surface it is suggested that small finishing nails be used Insart the pins in original positions or insert finishing nails near pin locations Propsriy lacata sin or nail in grille cloth web and drive into assembly2. woofer large speaker and then carefully remove the intarior fiberglass Note mounting position of fiberglass in enclosure Fold fiberglass in half langthwisa to ramove Additional Service Hints Crossover capacitors MUST be replaced with the metalized myler or non polarized electrolytic types Inductors consist of No 21 wire or largar NOTE If tha crossover assembly is removed it must bs correctly seaied when replaced for an airtight seal REASSEMBLY CHECK LIST 1 Fiberglass property installed 2 Speaker wire leads properly phased 3 Speaker electrical check Audio sound 4 Speakers properly sealed and secured 5 Enclosure air seal check 6 Grille cloth and b ffle assembly properly secured THE SPEAKER SYSTEM MUST BE SEALED AIRTIGHT ENCLOSURE AIR SEAL CHECK This check does not apply to ported models E V Elaven A and V Twelve Once ali componsnts except grille assembly are installed and secured check the system air seal by carefully pushing down on the woofer speaker cone by hand The woofer cone must take at least 3 three seconds to return completely ta restored position If cone returns to restored position in less than three saconds there is an excessive air lsak in the enclosure which must be corrected or the system will have distortion GRILLE CLOTH AND BAFFLE ASSEMBLY The grille cioth and batfia assembly may ba secured to the enclosure by either reusing the Spotnail Pins 1 or by using smail
3. e leads are phased correctly On several models the midrange or tweeter speaker is connected reverse phase from the inphese bass speaker Tweeter raverse phased E V Eight e E V Nine and E V Twelve s Midrange reverse phased E V FoureA E V SixeB and E V Fifteen inphese systems E V Five C E V Thirteen E V Fourteen and E V Sixteen Standard speaker color coding on E V speaker systems is PIL s aie apt raa ate soe Woofer Grean Midrange MEU Q 4 x lt Tweeter GUE ie WS kU Goie wes s Common NOTE On Models E V Six B and V Nine White Woofer Red Midrange Green Tweeter E V Twelve woofer phase dot racsives coded lead of cable assembly To check a speaker voice coil use a 1 5 volt battery Cannact battery terminals as shown in Figure 3 positive to terminal with phasing dot The speaker cone should move out with a scratching sound TERMINAL 1 5 VOLTS FIGURE 3 CROSSOVER SERVICING CAUTION When working with fiberglass it is recommended that long sleeves gloves and safety glasses be worn It is recommended that speaker systems with dafective crossover networks be returned to Electro Voice for servicing Despite rigid quality control standards occasional latant defects dc appesr It is suggested that solder connections should be checked for good contact Tweeter level controls should be checked in ralation to tweeter dafects To gain access to the crossover assembly remove
4. om g gt Slecho Voce SERVICE DATA paler DISASSEMBLY PROCEDURE FOR STANDARD FRONT LOADED ELECTRO VOICE BOOKSHELF SPEAKER SYSTEMS MODELS COVERED E V Four A E V Five C E V Six 8 E V Eight A E V Nine E V Eleven A E V Twalve E V Thirteen E V Fourteen E V Fifteen and E V Sixtean GRILLE ASSEMBLY The Grille Assembly on ail Electro Voice front ioaded book shelf speaker systerns is secured with Spotnail Pins 1 Locate these gins in grille cloth web and carefully drive inch into enclosure with small punch or nail Figure 1 All models contain 6 six pins except E V Eight A which contains 4 four pins IW inch should be sufficient to free the grille assembly from Spotnail Pins Slight air leaks may develop if a pin punctures the inner enclosure space The pins should be left in the enclosure if they are not to be reused See Grille Cloth reassembly NOTE Earlier models may contain Hock and Pile Grips VELCRO instead of Spotnail pins FIGURE 1 Remove Grille Assembly by one of the following recom mended methods a Remove grille by pulling out carefully with the fingers b Drive a small nail with a large head through grille cloth web at one end of assembly Center nail in web cross hatch Figure 2 Remove grille ciath and baffle assembiy by pulling out carefully on nail NOTE On models E V FoureA and E V Five C the grille cloth and baffle assembly includes the wood grille trim On Mods E V Nine
5. the wood grilie trim is part of the cabinet assembiy and doss not remove with the grille cloth and baffle assembly CAUTION DO NOT use a flat blade instrument to pry the grille cloth and baffle assembly from the side Damage to the enclosure cannot be avoided Fran K wW a IKRE zanm yl es 77 U 8 gt 2 me Pts P FINCA TIW 3 pa eee AAN so Bae DIUM VI ATS ee Z FFER ZooM ui g DAF E 31995 NAS VV uolas FIGURE 2 SPEAKER REMOVAL SERVICING Spaaker components in Electro Voice speaker systems are secured with screws and sealed with a clear silicon sealer E V No 97020 for an airtight seal All syst rns are sealed except models E V ElevansA and E V Twelve which are ported bass raflex types and do not require an air seal Tha silicon sealer is reusable and should not require additional sealing material if speaker is returned to the originai mounted position Earlier models that were sealed with black Mortite may require additional sealing material 1 Remove screws securing speaker to be replaced 2 Work speaker loose from sealer by placing screwdriver blade under speaker edge and twist 3 Ths internal speaker wiring employs both push on connectors and soldered connactions The speaker highside or positive terminal is identified by a color phasing dot near the terminai The common or negative terminal is unmarked Whan re placing speaker make certain that wir
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