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Old 21st January 2013, 04:49 PM   #1
JoeB83 is offline JoeB83  United States
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Default Left/Right Channel balancer

Hi all,

I'm wondering how one would go about making a left/right channel balancer. I have about 10% hearing loss in my right ear which makes listening with headphones rather difficult, if not annoying. I currently use an O2 amp, Shure SRH840 cans, and either an iPod with line out or connected to my computer via an ODAC. The only way I can realistically change this with the equipment I have now is if I change the balance through the 'sound mixer menu' on the computer. I was thinking a 1K ohm trim pot on each channel would do the trick, would that work well enough?
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Old 21st January 2013, 04:54 PM   #2
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How are the O2's gain resistors configured? You could increase the gain for your right ear to get a perceptual balance. The gain pushbutton could then be an "equal balance" or "compensated" switch.
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Old 21st January 2013, 05:24 PM   #3
JoeB83 is offline JoeB83  United States
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That's a wonderful idea, it never would have crossed my mind! I'm using the default values for the gain resistors (1K & 274R). How would I calculate which values I should use? Or should I just start changing the resistors about 10R at a time until I reach the balance I want?
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Old 21st January 2013, 05:43 PM   #4
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Yes, trial and error substitution would be the best way. Use of the gain resistor sockets is a real help here. It might be a good idea to give a relatively lengthy audition to each change to make sure you get a comfortable long-term fix.
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