1 Guitar into 2 Amps...

Started by vdm, December 27, 2003, 06:15:40 AM

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vdm

Hey all,
I know this is probably a very simple panner idea - but what i'm trying to do is the simplest of simple.

what i want is to take my guitar plug into a box, and have two leads coming out the other end to go to two separate amps.
no switches, no knobs, i just simply want to split the signal.

if anyone has any idea - i'd be super greatful.

thanks everyone,

Trent

SnooP_Wiggles

Look around the shops for a TRS Y cord. One end is a 1/4 inch mono and it splits into two mono 1/4 inch. I have one to connect my multi effects to 2 amps (stereo though) A splitter box would also be fairly easy, just split the input into 2 wires connecting them to the output. Signal would be halved though.

smoguzbenjamin

You can make an opamp or JFET buffer and then double the signal level, then split it in 2 for 2 amps ;)

You can then also use it as a booster! Hmmmm... :? Good idea. You inspired me! :mrgreen:
I don't like Holland. Nobody has the transistors I want.

The Tone God

QuoteYou can make an opamp or JFET buffer and then double the signal level, then split it in 2 for 2 amps

Thats not a good solution. It doesn't really address the problem. I do belive that a buffer of some kind should be used when splitting signals. You wouldn't need to boast the signal if you properly build a buffer circuit.

There are numours signal spliters out there. There is one called the Super Y complete with PCB/Lyouts here:

http://www.geocities.com/thetonegod/

Just leave out the switching portion and you have a simple signal splitter.

Andrew

Brian Marshall

Quote from: SnooP_WigglesLook around the shops for a TRS Y cord. One end is a 1/4 inch mono and it splits into two mono 1/4 inch. I have one to connect my multi effects to 2 amps (stereo though) A splitter box would also be fairly easy, just split the input into 2 wires connecting them to the output. Signal would be halved though.


i think you typoeed on this   you would want a TS cable, not a TRS cable... guitars and pedals dont have ballanced outputs.

R.G.

Depending on your setup, the specific amps, and the electrical wiring you hook up to, you can maybe get away with a simple wired-parallel connection or Y-cord, as was recommended.

If one or both of the amps has too low an input impedance or there are long (6' or longer) cords involved, you may also need a buffer to drive the split. The buffer helps prevent treble loss from capacitive loading.

None of the approaches so far deal with hum which you can get from ground loops or electrical leakage in one or both amps. Some amps do, some amps don't, some it depends on the electrical wiring you plug into.

If hum is a problem, you have to isolate the ground/shield line to eliminate the hum. See the "splitter" circuits at GEO for how to do this.
R.G.

In response to the questions in the forum - PCB Layout for Musical Effects is available from The Book Patch. Search "PCB Layout" and it ought to appear.

vdm

thanks guys - i'm going to go with a simplified version of the super y box from the tone god. i think i might go out and pick up the parts now - i'll let you know how it goes.

trent

dr

...back in the old days,I used to run the guitar into Vibrato #1 of my Super;then run out of the same #2 input over to another amp's channel #1......