Altec 729a owners manual

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I CONTROLS(FRONTPANEL) Acousta-Voicette isequipped withaself-c 0nta in ed power supply, whichisactivated bythe main sound system powerON/ OFF switch, whenthe729A isplugged intoa"Switched" (120V, 50/60 Hz),receptacle onthe rear ofthe receiver. (Figure4). POWERCONNECTIONS Equipmentsupplied fordomestic use(120 volt, 50/60 Hz),will have thepower transformer primarystrapped for120 volts (ter­ minals 2to 3and 4to 5on TB1). Thepower inputnameplate on the chass isad jacent tothe power cordwi IIbe mounted to show theappropriate sidespecifying theconnections. Tostrap for 220 volt operation cutthe strap between terminals 2to 3, and 4to 5on TBl and restrap 3to 4. F1fuse should alsobe changed fromthe1amp provided toa1/2 amp fuse. IN position, inwhich thefilter andgain adjustments areeffective. TAPE position, sameas"IN" position, however, anysig na Iappl iedmust pass through anexternal tape recorder, and again backthrough theequalizer before be ing appl iedtothe main receiver system. TAPE/IN/OUT (Conti nued): Modified twin"T"active bandrejection notch filters, 24per channel, operating in cascade, andcentered at1/3 octave intervals from63Hz to12.5 KHz, each f iIte rproviding 0dB to -14 dBloss at center frequency. A broadband reinsertion gain control, vertical mounted, linearslide (0ne per channel) . For A/B comparison andtape monitoring, selectable to: GAIN: LEFT &RIGHT CHANNELFILTERS: TAPE/IN/OUT: OUTposition, whichbypasses thefilter and gain of the equa Iizer - ALTEC 724A/725A -REAR VIEW FROM TOTAPERECORD ACCESSORY MONITOROUTPHONO o 0 o 0 TURNTABLE ACOUSTA -VOICETTE -REAR VIEW TAPE INPUT LEFT CHANNEL 0 RIGHT CHANNEL 0 TAPE OUT PUT o o OUTPUT IINPUT Figure 2.729A Wiring Diagram withAltec Preamplifier -2-