So, I've got this "kit" version of a SHO but it comes only with a single output.
I never really bothered about the second output before but I went to a gig last night and a guy was feeding 2 amps with a SHO and it sounded great and looked very practical.
It saves a bit of pedalboard real-estate (no more ABY box needed?).
So here are my noob questions: :icon_redface:
Does this wiring diagram (below) would work? (seems almost too simple to be working)
Would I lose any output volume if I plug just one output?
Is the volume splitted equally between the 2 outputs?
Would this wiring work with other super gainy effects (BSIAB, Red Llama...)?
(http://i45.tinypic.com/21l021d.png)
Thanks in advance :)
It gives two identical outputs. Loss may be insignificant.
You could instead just use a Y-cord.
Is that what you want? On "some" effects it is possible to tap two *different* sounds. Or in a phase-shifter, two points that sound the same individually but mix in a complicated way. But yes, sometimes the same sound through two amps in two places is much richer than one.
Here's the schematic. It "SHO" looks easy to add the other output.
http://analogguru.an.ohost.de/193/schematics/Zvex_SHO.gif
Thanks for the link!!! :)
I have to give it a go.
For the volume, my noob brain tells me that if I plug one output I get 100% of the signal coming from the SHO, if I plug the 2 output,s then the volume is splitted equally between the 2 outputs/amps. That would be the best situation. For whatever reason, if it's not the case, the difference could be fine tuned with the amps setting...
You got it!
There should be no volume drop, the output impedance should simply halve. In our V=I.R equation, we can consider this an example where V is fairly fixed and plugging it into something simply varies the I and the R, making the transistor run hotter or cooler as it increases its current output. The variation in this example is tiny, maybe the difference of 2-3mA to 6mA, so don't be alarmed by that.
Think of a 4x12 cab. 1 speaker plugged in by itself doesn't sound 4 times louder than any one of the others wired up in parallel. The difference largely comes from how much power you're drawing from the power amp.
> brain tells me that if I plug one output I get 100% of the signal coming from the SHO, if I plug the 2 output,s then the volume is splitted equally between the 2 outputs/amps.
It is almost the same as your home lights. You have 120V (or 230V) at the wall. You plug in one, two, ten lamps. You still have very-nearly 120V at the wall. Every lamp runs "full" brightness.
That's ideal. There are always losses. House power wiring is normally designed for less than 2% loss at MAXimum load. 120V can sag to 117V. 117V is close-enough to 120V for practical purpose.
The "loss" in that pedal is equivalent to a 5K resistor. A typical guitar-amp input is 500K, 100 times higher. Signal sag is about 1%. You can't hear 1% difference. With two 500K amps connected, sag is another 1%. You won't hear that either. You need near 10% sag to hear a for-sure drop in level. You can connect ten typical 500K g-amp inputs for a "slight" drop in level, easily corrected by tapping the volume a half-twitch. (Actually if all ten amps are singing in the same room, it should be ten times louder, or 9X louder counting 10% sag.)