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Parallel boxes

Thunderscreech

Thunderscreech

Jun 4, 2008
6,707
270
Fredericksburg, Virginia
#1
What I am looking for is a box or something that can split the bass signal, run it through two pedals, and then re-unify it. Like two EHX Switchblades, but in one unit, with something to switch between 1, 2, or both. is it an A/B/Y Box? or something different. I don't know what it's called, so I can't really search for it. :confused:
 
#6
I use a Rolls 4 channel mixer to split and recombine 4 parallel signals ...

pedal.jpg
 
#10
When I run a passive bass and I turn off the Marshall pedal then it will feed back ...

but if I run an active bass or simply leave the effect on or turn down the slider it will eliminate the feedback ...

But this is a poor mans Geddy type parallel effects board.
 
#11
Gashaponcito said:
Could you explain a little bit =O
Click to expand...
In passive circuits, signal can go both ways.
Say you run 2 channels with true bypass pedals. If you turn one of them off, the channel becomes a simple cable. Since current follows the easiest flow, if will barely go into the other channel, unless it provides a lot of gain.
In this case, you may run into another issue. Signal going out of the second channel will travel backwards through the bypassed pedal and feed back at the input of the active pedal.
 
#13
How would this work? the word Input and the S=Send/R=Return got cut off by my scanner.
BlendPedalSchematic-2.jpg


basically, As​ and Bs​ are the sends, and Ar​ and Br​ are the returns. The first switch goes between the A and B channels, and the second one selects Both mixed or switching.

Both Switches are DPDT, and the blend pot I'm not sure what value it should be. I have a Hammond 1590BB project box I plan to build this in, and jacks and switches will come from RadioShack or Small Bear electronics.

Would Diodes solve the feedback problem?
 
#16
Jazz Ad said:
In passive circuits, signal can go both ways.
Say you run 2 channels with true bypass pedals. If you turn one of them off, the channel becomes a simple cable. Since current follows the easiest flow, if will barely go into the other channel, unless it provides a lot of gain.
In this case, you may run into another issue. Signal going out of the second channel will travel backwards through the bypassed pedal and feed back at the input of the active pedal.
Click to expand...

Is there something like it (passive mixer) but without those issues??
 

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