signal splitter for running up to 4 amps...

aen · Post by **aen** » Thu Jan 21, 2010 7:44 pm

Does any wiring wizard here know if I can do this just passive wiring and switches? Or will that suck? a friend of mine is looking for a one input/four output box to send his guitar to 4 amps, and I would build it if I knew a sure fire way.

Pens · Post by **Pens** » Thu Jan 21, 2010 7:47 pm

I've done the passive route for two paths, I'm sure 4 would be the same. Obviously it would be better to build a buffered output with a quad-opamp. I think Geofex has a schem for doing this, it's been a while since I looked that up though.

stewart · Post by **stewart** » Thu Jan 21, 2010 7:47 pm

i've got a 3 way one, but it's not passive and the innards are gooped...

(so not much help, sorry. although i could put you in touch with the guy who made it)

timhulio · Post by **timhulio** » Thu Jan 21, 2010 8:36 pm

You can build 4 klon buffers on a TL074 and it'd come out pretty small.

From beavis audio:

Post by **Mike** » Fri Jan 22, 2010 9:02 am

Definitely don't do passive.

Personally I would insert a 47K/100K between the node where C2 and R3 meet at pin3 and in the feedback loop wire a 100K pot as a variable resistor and then you have some power over mixing aswell.

Pens · Post by **Pens** » Fri Jan 22, 2010 1:28 pm

If you have jFets handy there's this one also:

http://www.muzique.com/lab/splitter.htm

NickS · Post by **NickS** » Fri Jan 22, 2010 2:15 pm

Mike wrote:Definitely don't do passive.

Personally I would insert a 47K/100K between the node where C2 and R3 meet at pin3 and in the feedback loop wire a 100K pot as a variable resistor and then you have some power over mixing aswell.

I don't quite get what you're driving at there..

I would put your 47K/100K between Vbias (where R1, R2, R3 and C1 meet) and pin 2. Then, as you say, put in a pot wired as a variable resistor between pins 1 and 2.

Post by **Mike** » Fri Jan 22, 2010 2:23 pm

You're absolutely right - my fuckup. Normally I draw op-amps the other way round with pin 2 above pin 3.

aen · Post by **aen** » Fri Jan 22, 2010 8:43 pm

Pens wrote:If you have jFets handy there's this one also:

http://www.muzique.com/lab/splitter.htm

I like.

SoylentGreenIsPeople · Sat Jan 23, 2010 12:43 am

My dream amp rig would be 4 bassmans, 2 on the left, 2 right, set up in stereo.

I could do the intense volume thing to get a rich and complex sound for recording. Another plus is that lots of speakers gives a better sound, even at lower gig volumes.

mickie08 · Post by **mickie08** » Sat Jan 23, 2010 3:20 am

w would your dream setup be 4 of the same amp? To each their own, but it doesn't mae much sense. Yeah you could EQ them a bit for different sounds, but Iw ould at least go like 4 different fender tube amps if you wanted that fender tone.. Anyways just curious...

SoylentGreenIsPeople · Sat Jan 23, 2010 3:34 am

I like the sound of lots of speakers. If I preferred a head amp, I'd just use a couple of full stacks. I like the bassman combos, so I'd need 4 full combo amps. Four amps, even the same models EQed the same way, are going to sound slightly different, anyway. But I'm not really looking for a blend of tones; just one tone produced with great definition and robustness.