Tomys Posted July 28, 2009 Share Posted July 28, 2009 I've just got this THX ultra 2 and I noticed the Amp is humbling [:'(] .Can anyone please help. how to fit it.. what's wrong with it ? Many thanksss Cheersss Quote Link to comment Share on other sites More sharing options...
wuzzzer Posted July 28, 2009 Share Posted July 28, 2009 I'm assuming you mean humming, because if I ever have an amp that's humbling me I usually try and show it who's boss. Amp humming can be the result of a ground loop. Try and plug it in a different outlet and see if it helps. Sometimes moving cords around can help too. Quote Link to comment Share on other sites More sharing options...
kelA Posted July 28, 2009 Share Posted July 28, 2009 Is it humming through the system (subs) or can you hear a hum coming from inside the amp casing? Quote Link to comment Share on other sites More sharing options...
Tomys Posted July 28, 2009 Author Share Posted July 28, 2009 Thanks all for your help.. @ WUZZER I tried in different outlets, but the hum is still there.. @ keIA The hum is coming from inside the Amp casing ... Quote Link to comment Share on other sites More sharing options...
Daddy Dee Posted July 28, 2009 Share Posted July 28, 2009 a hum from the amplifier (and not going through the speakers) is a mechanical hum. I've heard his when a transformer wasn't quite right, or aging. depending on he problem, tightening to the chassis could help. I've wondered if there is a way to damp the vibration in a helpful way, but since they sometimes get hot, tha's a problem. Klipsch tech support would be a good opion. It may just need to be sent in for service, but they can advise you approriately on that. Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted July 29, 2009 Share Posted July 29, 2009 It could be the bolt holding the torridial transformer (the big round doughnut thingie in the middle). That's what I've been told- mine hums too so I should do this fix. MAKE SURE TO UNPLUG and don't touch any connections, particularly the ends of any big capacitors. Quote Link to comment Share on other sites More sharing options...
TNRabbit Posted July 29, 2009 Share Posted July 29, 2009 If the amp is humming, you must TEACH IT THE WORDS or you'll never get anywhere~ [H] Quote Link to comment Share on other sites More sharing options...
djk Posted July 29, 2009 Share Posted July 29, 2009 Most toroids make mechanical hum when there is only a few mV of DC off-set on the AC power. The Crown method is the simplest way to go. Only one bridge rectifier is needed for amps less than 1KW. Quote Link to comment Share on other sites More sharing options...
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