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DTT2500 AMP Problem - Speaker Poping and Crackling Noise

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  • DTT2500 AMP Problem - Speaker Poping and Crackling Noise

    Hi Guys, Well I am new. I actually have a Cambridge Sound Works DTT2500, Had it for a long time and worked great, a little while ago I did a small repair on its power supply brick(had a bad cap on it that caused the SUb not to work so it needed replacing) since then I also noticed that it has had a white noise coming from all speakers, recently after running the speakers for a few hours at normal sound levels or playing rock and roll for 10 mins at high (80%) levels (just to test ) the thing starts making crackling and poping sounds from all speakers. This gets annoying when I watch movies on the PC.

    I have since replaced the power supply brick with a laptop brick, running great but the crackling noise comes back after a while. I really want to get rid of this issue. I opened up the amp but found no bad caps in it. Not sure what it could be. All connections are tight, the speakers and everything seem fine, so I think the problem is in the amp. Any one here with good experience with amps that can help me please ?

    Oh, and I should add, the amp has digital mute and environment switch, muting it from the amp makes the poping go away.

  • #2
    Here is the setup. pretty good for me, but I just need to fix the crackling and poping noise

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    • #3
      I'm not the expert that some on here are...not even close , but it sounds like caps to me. If it is an old unit caps can dry out. They don't have to look bad to be bad. Good luck with it.

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      • #4
        Or maybe crappy ass soldering by the factory

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        • #5
          Or what Jazz said...see that all too often

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          • #6
            I have re soldiered most of the joints and they looked good to be honest. Do you think I should recap the whole thing? I bet thast gonna cost me a pretty penny. I was hoping there might be a spesific part I can repair. Do you guys have any experts on the amps in the forums that could maybe help me out? I can post pictures etc.

            Thanks Guys

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            • #7
              Did all this start AFTER you changed the PS ? A schematic would be nice too.

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              • #8
                DTT2500 amp fix

                PM sent.

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