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Sony Str-db 940 amplifier - rear speakers problem

  • 20-05-2010 1:23pm
    #1
    africates
    Registered Users Posts: 81 ✭✭


    Hi,
    I have Sony Str-db 940 amplifier with JBL CS-680 speaker set connected. 2 rear speakers usually don't work. I'm sure that speakers, cables, cabling, etc. are ok. It is something with amplifier itself. This is how i test the speakers: i run 'TONE TEST' on the amplifier and sometimes one of the rear speakers works... left OR right. I get them to work sometimes when i volume up the 'rear' but after few seconds these are gone again....
    Is this worth fixing? How much would that be? Do you know the best place / person to give the try to fix it?
    Thanks for advices
    africates


Comments

  • #2
    slave1
    Moderators, Sports Moderators Posts: 19,200 Mod ✭✭✭✭slave1


    I'm not home at the minute but pretty sure this is the amp I have. I've never had a day's bother with mine.
    You are right to use the test tone, it puts an audible signal to each speaker in succession. I would run it with the working speakers and then connect the speakers you are certain are working (presumably the front left and right) into the rear left and right terminals on the back of the amp and re-run the test.
    This will acertain whether the amp is providing a signal to a set of working speakers (with working cable!).
    Not worth fixing, you can get an equivalent amp for less than a ton without much effort on adverts.ie


  • #3
    slave1
    Moderators, Sports Moderators Posts: 19,200 Mod ✭✭✭✭slave1


    Oh, meant to say, check the Ohm rating on your rear speakers, they need to be matching your other main speakers (not sure about the sub)


  • #4
    Owenw
    Closed Accounts Posts: 578 ✭✭✭Owenw


    I have one of these and the centre channel is a bit ropey. It often doesn't work unless i turn it up loud for a moment. Had it checked by a Sony dealer about 3 years ago and told it wasn't worth repairing.

    Ended up replacing with a Denon amp from RS last year. All the latest HD surround formats supported, HDMI switching, and better sound.

    I kept the Sony for use as a stereo amp for my PC.

    I'd think about saving up for a while and get a new amp.


  • #5
    africates
    Registered Users Posts: 81 ✭✭africates


    Thanks guys!
    I've checked speakers and connections - they are fine. I've also swapped speakers with no luck. Its definatelly the amp... so I think I'd need to go for new one... after holidays I recon ;)


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