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Audio mixer headphone output problem

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Bob Mark
Audio mixer headphone output problem
on Oct 21, 2014 at 5:19:39 pm

Hey guys. I have an old Shure audio mixer that still works except that the headphone output sound thin on the right side. Any idea what could be causing this? Thanks. Bob

Bob


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Brian Reynolds
Re: Audio mixer headphone output problem
on Oct 21, 2014 at 10:02:20 pm
Last Edited By Brian Reynolds on Oct 21, 2014 at 10:03:48 pm

What model of mixer?
Some old shure mixes had a MONO headphone output....
Is it the same on all headphones?


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Richard Crowley
Re: Audio mixer headphone output problem
on Oct 21, 2014 at 10:19:40 pm

Please identify exactly WHICH Shure mixer you are talking about.
Please identify exactly what headphones you are talking about.
Do these headphones sound OK with other gear?


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Bob Mark
Re: Audio mixer headphone output problem
on Oct 22, 2014 at 5:11:28 pm

Thanks for your replies guys. It's an old FP42 stereo mixer that I use from time to time. The headphones are Sony MDR-7506 and they sound fine on other sources. The outputs sound fine, it's just the headphone output that sounds thin on the right side.

Here is the headphone circuit:


Thanks!

Bob


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Richard Crowley
Re: Audio mixer headphone output problem
on Oct 22, 2014 at 6:01:18 pm
Last Edited By Richard Crowley on Oct 22, 2014 at 6:04:14 pm

My immediate guess would be that C908 and/or C913 has dried out and is no longer passing low frequencies because of diminished capacitance. Or perhaps even C911.


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Bob Mark
Re: Audio mixer headphone output problem
on Oct 22, 2014 at 6:24:09 pm

I was kind of thinking it might be a cap problem.
Thank you!

Bob


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