My Audio Buddy Preamp is hissing and crackling. One input is not working at all. Through a process of elimination I have worked out the cables etc are OK. Please advise if it is repairable and if so, an estimate of cost would be great.
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Re: Preamp not working
Befor we go inside we make cleaning with lubricant contact cleaner from radio shack and apply it over all control switches while you are moving it-apply also in all sockets and put your plugs in it(in-out-in-out).after all above if not pass you have to ask for help from qualified service center.
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The rectifier is the only thing wrong with the amp. Typically a bad rectifier will pop fuses but that is not the only thing than can cause that. You could try pulling tubes to see if you could isolate the problem. Just be careful if you haven't even taken the tubes out before, those PCB sockets are kind of flimsy. pull one tube at a time and see in the crackling goes away
Any preamp should work. A preamp goes into your system between the amp and the other components which plug into it- CD player, FM tuner, Turntable.....etc. It's takes their output signal, processes it as my be Volume, bass, treble... and then send a sufficient signal to the amp to drive the amp to power your speakers. As long as the preamp output is enough for your Amps input any will work as most will be.
Typically you need an preamplifier between your tv and amplifier. you run one optical cable (or coax ) cable from you tv audio output to the preamplifier then you run audio rca cables from preamp outputs to amp inputs (2 for stereo 5 or 7 for surround). the preamp decodes audio and controls volume and surround modes. If you have a cable box and need just simple setup for watching tv just run rca cables from your cable box audio outs to your amp inputs. you then program your cable remote control to control volume.
Crackling is not good. Sounds like it needs to be serviced if all of the connecting cables are in good working order. It can be repaired by Rita's Vintage Audio in WA state. They are expensive but good.
2 channel power amp
you will need additional equipment for this beast to work right.
1. you need a pre-amp, all audio connections go into the preamp which control sorces, volm, bass and treble.
2. out from the preamp into the power amp and out to your speakers
3. you can freak it if you have an 1/8" stereo to RCA stereo plug in this caee you can play your ipod, phone or mp3 player thru this amp using your input device (ipod, phone or mp3 player ) like a preamp to control volm, bass and treble.
There is a possible noise build up on your CH2 due to failure or weakness of the LCR network of the preamp circuit. It could also be a noise within any semiconducctor or the preamp IC. Unless you can do a signal test with the elimination of the input to the output amplifier, the fault will not be say to isolate. Hence if youarre familiar do the test by approching from the output amplifier's input, proceeding to the main input where the faulty section can be identified. Hope this helps. Good day
First thing to check is that the phantom power is not turned on. If you are using a condenser mic, then it should. If you are using dynamic mic, then it will crackle and makes weird noises in the manner you describe. Other than that it sounds like you have a failing op amp in your preamp. This sort of repair work is not expensive(with respect to the outcome). I would anticipate $40-60 to fix it. Trouble is you can replace it super cheap at the moment 45% off for $64.95plus $9.95 shipping from zzsounds
So I guess that it may not be worth repairing, and more a replacement item for that money. If you have a mate with electronics experience, you could just replace the opamps at home for $10 worth of parts.
If you think my advice helped you to work out what to do, a FixYa rating would be great. Cheers
I would use sheilded wire on the mic with the least amount of cable. You can relocate the pre amp with aluminum foil wrapped around the pre amp. also turn the gain on the mic down as to eliminate any interference from your strong radio station nearby.