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pray4rain

Running single speaker

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Hi, I need to run only one speaker but I'm worried if connecting only one speaker (using only one channel) to the amplifier is ok or not. I get monoblock power amplifier which seems to safer to me but I still have to connect/use only one channel of preamp. Can anyone explain the effect to amplifier when I use only one channel of Integrated amplifier or preamplifier?

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But seriously, I doubt very much the pre-amp would care in the slightest. In fact a good pre will be dual mono any way, so one side is just sitting there wasting a little bit of electricity. No biggy.

Some power/intergrated amps are made to be switched into mono. Its called Bridged Mode, and normally leads to lots of power.

Even if your amp isnt one of those, than it shouldn't bother it at all.

 

No doubt there are exceptions to that ....

What amp do you have/planning on getting ?

 

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One other thing to note is that, depending on the content, left and right channels will be different e.g. drums on the left channel and vocals on the right.

 

 

You will need to combine both channels with a MIXER.

 

Edited by custom_made

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Guest Clarence
3 minutes ago, custom_made said:

One other thing to note is that, depending on the content, left and right channels will be different e.g. drums on the left channel and vocals on the right.
You will need to combine both channels with a stereo to mono adapter like this:
 

or a mixing device

 

 

This is a good idea too.

 

But I was hoping to read more of the source signal (is this mono? Or are we talking about an AV system's centre front?). 

 

So many solutions, as in above or how about a single self-powered (active) speaker? 

 

Only note, while desperately trying not to bring tube rant to here, you wouldn't want to run a tube preamp's single channel alone, maybe with one side tubeless, as this will unevenly wear what may be a matched pair, or the like.

 

First I've ever read of such a request. 

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My understanding is the stereo to mono adaptor shown is actually meant to be a single source to dual sink.  Yes as said it will combine the two signals into one signal when used the other way around but you also get the signal from one side of the pre amp injected back into the other side of the pre amp.

 

Geoff @gmdb from Aurealis Audio was producing a mixie to correctly combine stereo to mono and I'm sure can provide a lot more information on the "hows and whys".

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1 hour ago, tesla13BMW said:

My understanding is the stereo to mono adaptor shown is actually meant to be a single source to dual sink.  Yes as said it will combine the two signals into one signal when used the other way around but you also get the signal from one side of the pre amp injected back into the other side of the pre amp.

 

Geoff @gmdb from Aurealis Audio was producing a mixie to correctly combine stereo to mono and I'm sure can provide a lot more information on the "hows and whys".


Yep. Do this ^ (edit: As in, use a MIXER.)

Edited by custom_made

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56 minutes ago, custom_made said:

One other thing to note is that, depending on the content, left and right channels will be different e.g. drums on the left channel and vocals on the right.
You will need to combine both channels with a stereo to mono adapter like this:
2phono1-500x228.jpg.19df53e30c12b29ed6a56716f4744420.jpg

If you hear distortion from the adapter, then you'll want to try a mixer.

 

To me, it looks like Mono to Stereo. I couldn't find one with Stereo to Mono (Female mono and male stereo).

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55 minutes ago, pray4rain said:

To me, it looks like Mono to Stereo. I couldn't find one with Stereo to Mono (Female mono and male stereo).

 

 

yeah ignore that message and use a MIXER.

Edited by custom_made

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1 hour ago, custom_made said:

One other thing to note is that, depending on the content, left and right channels will be different e.g. drums on the left channel and vocals on the right.
You will need to combine both channels with a stereo to mono adapter like this:
2phono1-500x228.jpg.19df53e30c12b29ed6a56716f4744420.jpg

If you hear distortion from the adapter, then you'll want to try a mixer.

 

 

Bad idea. DO NOT use this! 

 

You need a resistive divider or a proper mixer. Using the above device will, at best, cause distortion and at worst, damage. 

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Ok I've said twice to use a mixer since that message. I will just go ahead and delete the message so we can get passed that.

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1 hour ago, custom_made said:

Ok I've said twice to use a mixer since that message. I will just go ahead and delete the message so we can get passed that.

 

Haha, they're not going to let you forget it!

 

To the OP, Rane has a lot use useful articles, and this is one of them......

 

http://www.rane.com/note109.html

 

Regards,

Phil

Edited by tygersmoke

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Guest Clarence
1 hour ago, tygersmoke said:

 

Haha, they're not going to let you forget it!

 

To the OP, Rane has a lot use useful articles, and this is one of them......

 

http://www.rane.com/note109.html

 

Regards,

Phil

 

Well, now I know. Brilliant.

With an addendum, there seems to be an assumption unfolding here that the source is stereo.

Edited by Clarence
Addendum

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You need a resistor combiner lead.  It combines the two stereo channels into one.

Something like the attached.

Combiner.png

Sorry, didn't realise there was lots of info in the Rane document.  The main difference it there would be greater attenuation of signals in the one I've posted above.  You could make the resistors in the L & R arms 470 ohms.

Edited by shogun2

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