Deaf in one ear: I want MONO sound when I use headphones!

Asus / X102b
September 18, 2015 at 02:49:08
Specs: Windows 8.1, 4gb
as Jefro says: How do I get MONO? Details?

Like him I'm using a Laptop (windows 8.1 at moment) & Realtek HD audio Manager..... but the problem applies to all us deafer folk...oldies especially who find the same problem in Windows too

See More: Deaf in one ear: I want MONO sound when I use headphones!

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September 18, 2015 at 04:17:38
An article about this problem that may provide you with some ideas:

An example of a suitable converter here: Note that this outputs to the left earphone only, so if your hearing is in the right ear you may need to reverse the headphones.

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September 18, 2015 at 04:23:20
This discussion centers around the situation:

There are a couple of suggestions - which won't work; and one - page 2 of the discussion, the last response - which may apply in your situation You have Realtek Audio Manager - and that reply refer to Realtek

The suggestions in the above post to simply shift the balance over to one ear means you simply get whatever is on that channel (only). You lose the information from the other channel.

The suggestion to in effect short the two channels together - suggested in another post I found (actually an olde from here at CN):

whilst viable (means ripping open a set of cables...) would produce "some level of distortion not the least.. Also the on-board amps might not like it...

Even using a stereo-mono adapter (stereo tip plugs into stereo source; stereo phones plug into its mono o/p and the combined signal is now on both channels; i.e. - is "shorted" or connected internally to both channels... - isn't really the ideal way either; although it is "viable" within constraints. Again possible distortion (and the on-board amps may not like it - depending on the impedance of the headphones... compared to that of the audio o/p on the amps)? If the impedance isn't an issue and one can't hear the distortion then the plug-in adapter is a possible solution...

The "ideal" way to merge stereo to mono o/p is via a proper active or passive adapter. An active one would have an active (mains or battery powered) cct. which takes both in channels and combines them into a mono o/p. A passive one is simply a pad made up of resistors to combine the two channels into a mono o/p. It would not be mains or battery powered; as there will be no transistors (remember them) or an IC - and highly unlikely any valves/tubes (even older yet still viable and current technology...) and thus no volts required.

(I think most laptops have an audio o/p impedance in the range of 4-8ohms; some possible even up to 16 ohms. And I think some Apple kit may be even even higher?)

The above comments are echoed in the discussions in both links.

Fair to say I have used the plug-in adapter on occasion and found it OK... But then I wasn't listening for distortion; nor was it a serious consideration. as I was merely "monitoring" a conference audio PA o/p into assorted recorders. I could also check that actual stereo-feeds into the recorders if needs-be. And I have on occasion used it for listening to cd o/p from a stereo player but had only mono headphones at the time; it was "OK...".

If using mini-jack headphone then the plug-in adapter will be no significant strain on the headphone socket. But if you have 1/4ins headphone plugs then the strain on that mini-jack adapter and the laptop audio socket can be significant. There are adapters that allow 1/4ins to mini-jack; and visa-versa. Radio Shack used to have a whole range of such adapters; and likely many of the variations are still around.

The quality of such plug-in adapters varies greatly. Wise to invest in a decent one (and if it plays up - due to poor contacts) which can be returned under warranty.

Being slightly (seriously) audio challenged in one ear these days (consequences various professional events various...) I can sympathise with the situation as posted.

"ijack" and I crossed in posting...

message edited by trvlr

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September 18, 2015 at 07:12:27
"as Jefro says"

Just a friendly tip for the future. Always give a link to any particular post mentioned. Jefro has over 13000 posts on here and hasn't been around since 2012. The chances of anyone finding whatever it was you found is zero.

Aha, I see DAVEINCAPS found it but I suspect he's on a hot line to Obama..

Always pop back and let us know the outcome - thanks

message edited by Derek

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Related Solutions

September 18, 2015 at 14:08:32
It's probably this one:

but not much help there.

As already mentioned you need an adapter or do some soldering work yourself on something that merges the two signals and not something that just cuts off one of the channels. I doubt distortion will be a problem. I remember as a kid making a cable so I could record stereo music onto my mono cassette recorder. Also a few times I installed car speakers where I kept the single factory front speaker and added two rear speakers. In that case I'd wire the front one as mono and the rear ones as stereo. I never noticed any distortion but that's not exactly your situation so I guess you won't know for sure until you try it.

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September 18, 2015 at 14:30:39
The distortion issue is likely to "affect" or possibly "annoy" a true hifi audiophile; whereas anyone with less than "purrfekt" hearing isn't likely to be too/very aware of it?

As long as the source (on the laptop) is a higher or rmatching impedance to headphones I don't see any real problems. The impedance matching and possible upsets to the on-board amps in the computer do matter of course... But laptop audio systems are pretty robust with regard to the range of headsets and their respective impedances...

The basic rule of thumb used to that the headset impedance be10 times the impedance of the source if not matching it exactly - or very close to that (say within 10% or so). BT style headsets (and as used in the Beeb in the 60's) were high impedance when checking across lines in/out - so as not to upset/load and thus reduce the signal they were monitoring via a listening jack for a given line/cct. i still have a set somewhere... These were also used on cameras and microphone-boom operator's amps...

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