• Audio

  Audio mixer headphone output problem

  Posted by Bob Mark on October 21, 2014 at 5:19 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

  Bob Mark replied 11 years, 6 months ago 3 Members · 5 Replies
• 5 Replies

• 

  Brian Reynolds

  October 21, 2014 at 10:02 pm

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

  Richard Crowley

  October 21, 2014 at 10:19 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?
• 

  Bob Mark

  October 22, 2014 at 5:11 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
• 

  Richard Crowley

  October 22, 2014 at 6:01 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.
• 

  Bob Mark

  October 22, 2014 at 6:24 pm

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

  Bob

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