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Old 8th February 2016, 08:48 PM   #1
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Default Hearing Loss - Need mono audio, please help!!

To whom it concerns,

First time poster so if I am in the wrong place let me know where to go! Also, I am not "technologically" inclined so don't ask me to build my own components


I am looking for some audio equipment that will convert a stereo source signal to mono.


I am trying to take the audio coming from my Vizio TV and convert it from a stereo signal to mono for a gaming headset or ear buds. Most of my content comes from my Xbox One which does not have a mono setting (and neither does the Vizio). I have had very little luck using a variety of cables and couplers to accomplish this, most of the time I get either signal distortion or volume loss. I was hoping that you could offer some advice or a solution that would involve a receiver, amp, or other hardware that could accomplish what I am attempting.



I have been diagnosed with severe hearing loss in my right ear and soon I will have no hearing on that side at all and as a result I use headphones and gaming headsets for my listening needs, I have no need for speakers. Also, this hearing loss will be permanent so this is a matter of some personal importance to me.


I appreciate any ideas, thoughts, or insight you may have!!
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Old 10th February 2016, 02:55 PM   #2
Mooly is offline Mooly  United Kingdom
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Sorry to learn of your hearing problems.

Converting stereo to mono can be done in a couple of ways. The first is a simple mixing of the two signals via a resistive mixer. This works for line level signals but does attenuate the signal a little. The problem with this method is that there is interaction between the two channels.

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A far better way is to use an opamp and mix the signals at a point called a 'virtual ground' which is at the opamp input. This is a true mixer with no interaction.

This shows the idea in outline. If you used a low power opamp then the circuit could be made to run from two 9 volt batteries and would run for 100's ? of hours from a set (give or take). Its also easy to add gain by simply changing the value of the 10k feedback resistor. Using batteries and the circuit is pretty much complete as it stands and could be built for minimal cost.

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Old 10th February 2016, 03:25 PM   #3
rayma is offline rayma  United States
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Quote:
Originally Posted by jaretbb126 View Post
I am looking for some audio equipment that will convert a stereo source signal to mono.
If we cannot find one commercially that will work, I will be happy to build one for you, no charge.
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Old 10th February 2016, 04:56 PM   #4
rayma is offline rayma  United States
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Quote:
Originally Posted by jaretbb126 View Post
I am looking for some audio equipment that will convert a stereo source signal to mono.
4-channel Headphone Amplifier - Monoprice.com
I think this will work for you, since there's a stereo/mono output switch on the back of the headphone amplifier box.

Turn off the Vizio's internal speaker. Connect the Vizio's RCA audio output sockets to the RCA input sockets
on the headphone amplifier box. Then set the switch on the headphone box to mono. There are 1/4" output jacks,
so you'll probably need a mini jack to 1/4" jack adapter to connect the headphones that you have.

Last edited by rayma; 10th February 2016 at 05:09 PM.
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