User manual AUDIO TELEX ACM2150

[. . . ] . f-, () o c AMrilDiltil@ CO M M U N I CATI tHl-ill O N S;rlrL:rD f= a g . f-, ru (I ACM2150 Dual Channel Power Amplifier A, 5TFAIAN A MTOC 3 ConprV ctat|!IIEIS (l*, Et&rld c Audio Telex Gommunications pty Ltd ACN 001345482 hcorporated tn NSW NSW & ACT 149 Beaconsfleld Street Prlvate Bag 149 QLD & NT 42 Commerclal Road PO Box 871 Fortltude Valley QLD 4006 Ph 07 3852 1312 Fax 07 32521237 vlc 2U277 tlddleboriugh Road Box Hlll VIC 3128 Blackburn South VIC glg0 Ph 03 98907477 Fax 03 9890 7927 PO Box Sllverwater NSW 2128 Australla Ph 02 9047141', Fax 02 9648 3698 lSi l- WA 7164-66 Kent Street PO Box 489 SA Electronlc Concepts pty Ltd 76 George Street Thebarton SA 50gl PO Box 7030 Hutt Street Adelalde SA 5000 Ph 08 82349444 Fax 08 8234-%lt KW TAS l{cCulloch Pty Ltd 54a Albert Road o Cannlngton WA 6107 Ph 08 9356 2761 Fax 08 9356 2762 lloonahTA8 7009 Ph 03 6228 e, ?, 73 Fax 03 6278 1063 New Unlt B, 11 Plermark Drlve PO Box 512 Albany NZ '1331 Ph 09 415 9426 Fax 09 415 9864 ACM21 50 150 + 150 Watt Power Amplifier Product Description The ACM2l50 is a dual channel 150 + 150 watt power amplifier in a two rack unit (2RLf chassis suitable for table or direct 19" rack mounting. [. . . ] So, the fact that the fan is not operating at any time (and most noticeably to the operator at turn-on) does not mean that the amplifier is faulty in any way, just that it is operating within a temperature range that does not need fan cooling for adequate heat dissipation. If the ACM2I50 is operating continually at conservative levels and proper load conditions, it is possible that the cooling fan will not switch on at any time during normal operation. Whan operating, the fans cause air flow from the front to the rear of the amplifier. Amplifier Status Display Window The status display window highlights the operating conditions of the ACM2l50. -, lll l l{[I1 ll ()(4 l. F-F -Ul!2l TIIP I I 16 I 2r I ra I rJ I t5 I t2 I t2 I 9 I 9 I 6 I 5 I O T O Itt I+t T I G| 5 TAULT Channel A / Channel B: These LED's glow green if AC power is switched on to the ACM2l50. High Temperature: temperature control circuitry. If this LED is glowing and the fans have not failed, it means that the amplifier is operating in an ambient environment that is naturally too hot for fan cooling to make any difference to the temperature of the amplifier. This red LED glows if the fans have failed and the amplifier has been shut down by its, 3. Fault: This LED glows red if there is DC present on the ourput (speaker lines) internally disconnected from the amplifier stage. in which case the speakers will be 4- Output Level VU MeteIl Two 9 segment LED VU meters are provided to give an indication of the output signal levels of each channelof the ACM2I50 from -21 to +3 dB. For normal operation the LED's should oscillate in and out of the red zone' If the LED's in the red zone are lit continually, then the output level control (or the level of the input signal to the ACM2I50) should be adjusted to reduce the ouput level. Too much output level can cause distortion and possible damage to the connected speaker system. Rear Panel Connections qaQ"a : G-) FE'Egtnq !-::::. '. ::::-:: r---:--r-: r::::-_:(:= (-_=t:l-l l. < -r . * -nl c- a"gQ"g -)-- l' 3 Pin lEC, AC Mains Power lnlet The operating voltage is 240 VAC @ so rlzor n0 VAc @ 60 FIz. The AC power voltage level is not externally user selectable but is factory prsset (via transformer selection). -Ttt" ittl"t i, equipped with an inbuilt AC fuse holder fitted with a 6 Amp slow blow frse plus one spare fiue. Please ensure that the mains power cord is disconnected before attempting to check or replace this fuse. Continued ouo p"g" $ 2. Note: If the incorrect setting is used this may cause serious damage to the amplifier and/or speakers and void ar warranQr claim. [. . . ] As-these t\r sockets are wired in passive parallel for each channel, the failure of any one amplifier will not affect the signal flowin through that amplifier to another amplifier. & B) to the ACM2I50 ar Fuse Sizes ACltl2150 Amplifier tiains 240 VACI DG: 6AmperesStowBlow 5 Amperes Slow Blow Looking for something worthy to connect to the inputs and outputs of your neu ACtl2150?Well, please call your nearest Audio Telex Communications office for referral to your closest authorised Dealer or for more information on the ful selection of our compatible sound system products. [. . . ]