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I have a JVC AK 300 amp and output to the right speaker channel is intermittent or non existent. It sometime will correct itself after 3-4 hours of use. I checked connections, replaced wires, and rotated speakers with same result. Additionally, the display screen shows output to the left channel only when problem exists. The same problem exists regardless of input source so the problem is definately the amp. Any ideas to save the amp?

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6 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: JVC RX558 VBK, Crackling noise from speakers

A quick quess of mine is the following:

The OVERLOAD indicator lights up when the receiver is maxing out on the current it is sending to the speakers. My guess is there is possibly something wrong with the receiver itself, especially since the B speakers won't play. Either that, or something is broken in your speakers or you are using a set of speakers that have too low an impedance rating for your receiver.

Posted on Jun 22, 2008

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marsrover
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SOURCE: DENON PMA520 Amp. Suspect left channel

you have malefunction in your left output stage-but can i ask you did you forget to press left speaker button in your amp (if you have one in your amp).

Posted on Jul 27, 2008

  • 4234 Answers

SOURCE: fuzzy sound from right front speaker output

The main issue is to determine where the distortion is coming from. Does it start in the front and and get amplified or does it appear in the output section only? This will require a fixed signal and an oscilloscope to trace. Check for leaky coupling caps or leaky transistors in at the diff-amp section.

Dan

Posted on Feb 02, 2009

techman
  • 3130 Answers

SOURCE: I have bad static from my Pioneer vsx 49 Elite

sorry no easy solution as it sounds like the output transistors blew out or the emmitter resistors. you will need a service manual and an multimeter to measure the resistors on or around the audio output transistors they are a low value resistor usually around 1 to 2 watts in size. Do not replace any bad , burnt or discolloered resistors around the audio output transistors as if tou do you might just cause more damage to the output transistorsor audio output stage including the audio driver stage of the amp!!!!!!
Larry Dillon

Posted on Aug 27, 2009

Testimonial: "Thanks techman for the great answer! This is definitely not something I can do myself so I'm glad I just ordered a working one on ebay. rarejem1908"

  • 4234 Answers

SOURCE: I have a Fisher RS-717 stereo receiver, amplifier.

Yes you can use either A or B without a problem. The restriction is when you have both A & B connected. In that case, the speakers MUST be a minimum of 8 Ohm impedence. Using either A or B, you can use speakers of 4 Ohms impedence.

Dan

Posted on Nov 24, 2009

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Preamp intermittent channel


Getting the connections right is a problem. One thing I find helps is the THX DVD discs that certain movies have on them. They have a sound set up to get it right. It makes a tone for each channel so you can hear which channel is working. It should help you set up the system right and determine if any channel has a fault on it.

Feb 08, 2014 | Adcom GTP-870HD 7.1-Channel Amplifier

1 Answer

How can you bridge a 2 channel 300 watt amp to a 4 channel 300 watt car amp?


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How do you balance sound between two speakers. Where is the balance control? JVC RX5000v


On the front panel ONLY:
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please rate my solution.

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1 Answer

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Apr 14, 2009 | Audio Players & Recorders

1 Answer

Hi i have an audio source 300 watt amp with a&b speaker outputs. the problem is that no sound comes from the left side outputs a or b. the right side works fine thank you mike


You have a blown channel. If you are experienced with electronics repair, use the right channel to assist in diagnosing the left. Both channels should be efectively identical. In most cases, the defective parts are the output transistors. You should be able to A/B the output amp sections.

Let me know if you need further assistance.
Dan

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2 Answers

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