Question regarding output for a bent Stereo instrument

[Monkybunney]

Howdy everybody!

First post and I'm really happy I found this place. I'm very new to bending but I've tried to do some research and I bought Reed's book on Alien Instruments (A MUST read), so I'm probably going to ask some seemingly dumb questions at first.

I'm bending on a keyboard I picked up today that I discovered, after bringing it home, has Right and Left speakers. Prior to getting that I picked up a Mono 1/4" jack so I can run my new creations through an amp. I really don't care about the sounds being in stereo so my question; Can I just solder wires from both speaker to the positive and negative solder lugs on the jack? Or will that f*#@! some shit up and I should go find a stereo 1/4" jack for this project?


Thanks for reading folks!
Lots of love,

MB

[oald]

i always get confused with what the positive and negative stand for but one is for ground and the other is the signal you want, you can probably just test it with alligator clips or something before you solder it.  it might be obvious, the 'signal' in guitar effect pedals is almost always coming from the circuit board and the lead for 'ground' is coming from the power supply

just make sure in the end that the jack is wired so that the ground is going to the sleeve and that the signals are going to the tip:

in this diagram link....              1 is sleeve(ground) and 3 is tip(signal)
http://upload.wikimedia.org/wikipedia/commons/thumb/9/93/Jack_plug.png/300px-Jack_plug.png

and i think you'll be able to put both Left and Right signals on the tip but if it interferes for some reason just go with one,

or eventually upgrade to two separate outs for Right and Left

[ve3wwg]

If they are speaker outputs as you say, as opposed to line level outputs, I would be reluctant to tie those together. The reason is that in solid state amplifiers there is no output audio transformer. There is usually a push-pull pair of power transistors connected directly to the speaker.

By tying the outputs together, you may be creating some difficulties for the two amplifiers (one channel may be trying to pull low, while the other wants a high voltage). If they are very low power, like under 2 watts output, then you might get away with it. But normally, you'd not want to do this.

If you are only interested in using one speaker, then I'd suggest you just pick left or right. The outputs will be similar, minus any delay effects.

Alternatively, if they are very low power, you could introduce a 4 ohm resistor in series with the left and right outputs, and then tie the ends of those resistors together for a common speaker connection point. In this way, if the outputs of each amplifier disagree, at least there is 8 ohms of resistance between the two channels to dissipate the power through.