gavztheouch Posted August 18, 2007 Report Share Posted August 18, 2007 You can use this box to switch between one guitar and two amps, or use it between one amp and use the other channel for a tuner? Quote Link to comment Share on other sites More sharing options...
Acousticraft Posted August 20, 2007 Report Share Posted August 20, 2007 I have often thought of building an A/B box. What is a Hammond 1509BB? Is it a circuit board as it is hard to tell from the photo? Cheers Quote Link to comment Share on other sites More sharing options...
suregork Posted August 20, 2007 Report Share Posted August 20, 2007 The Hammond 1590BB is the aluminum enclosure.. Quote Link to comment Share on other sites More sharing options...
Prostheta Posted August 20, 2007 Report Share Posted August 20, 2007 I hate the clicks and thunks I get from switches. How quiet is your A/B? I would be tempted to suggest an active circuit with two op-amps running in parallel, one with unity gain and the other with zero gain, switchable by some logic circuit in turn ran off a momentary switch which is debounced? If the switching is quiet then this is just academic :-D Quote Link to comment Share on other sites More sharing options...
gavztheouch Posted August 20, 2007 Author Report Share Posted August 20, 2007 To be honest all my leads are at my friends house bar the two i have at the house the now so i havent tested it properly yet. It works fine switching between amp and the empty socket with no pop, but this might not be the case when connected to two amps. il let you know when i test it out properly. I would rarely need to switch amps mid song so i guess it doesnt really matter. However an active circuit looper pedal would be a good project so i could switch between two different banks of effect pedals but somehow still having it conected to the same amp. Would this be possible? Quote Link to comment Share on other sites More sharing options...
Acousticraft Posted August 20, 2007 Report Share Posted August 20, 2007 I know my Vox 2 button foot switch basically works like an A/B box with no pops or clicks when changing channels but then the circuitry may be in the amp itself to prevent that. Quote Link to comment Share on other sites More sharing options...
Mr. Preston Swift Posted August 26, 2007 Report Share Posted August 26, 2007 Would the output jacks be mono outputs or stereo outputs? Quote Link to comment Share on other sites More sharing options...
gavztheouch Posted August 27, 2007 Author Report Share Posted August 27, 2007 On mine the actuall jacks are for stereo output but there both wired for mono, so you only need mono. Quote Link to comment Share on other sites More sharing options...
guitarkiller Posted September 20, 2007 Report Share Posted September 20, 2007 Thanks for posting that ! I really like my Carvin for the clean and my Randall for Dist. Sounds like a solution Quote Link to comment Share on other sites More sharing options...
axxion Posted April 26, 2008 Report Share Posted April 26, 2008 (edited) How would you add LEDs to indicate A or B? Is a 10mA DPDT switch good enough? Edited April 26, 2008 by axxion Quote Link to comment Share on other sites More sharing options...
digi2t Posted May 2, 2008 Report Share Posted May 2, 2008 I posted this in January: Stereo ABY You can scale down the diagram to mono and no Y as required, and all the required parts are listed. What ever blows your skirt up. This includes the type of switches that I used which are a bit pricey, but very, very quiet. LED and optional tuner wiring is included as well. With time, I found that the only mod that I would make would be to add a third "Y" LED instead of having both the A and B LED's come on during Y mode. This would allow you to know which channel your coming back to when coming out of Y. In the heat of things, I sometimes forget which channel I was in originally before I go to Y. This is only a problem when I'm in A, go Y, but I want to come out in B. Anyway, I haven't gotten around to rewiring it yet, but if anyone needs this mod, let me know and I'll post it. In any case, whether mono or stereo, if you want LED's, you need a TPDT switch. 2 poles for sound, and the third for the LED's. Hence, the pricey switch. Cheers Quote Link to comment Share on other sites More sharing options...
al heeley Posted January 20, 2009 Report Share Posted January 20, 2009 Here's a schematic for a passive A/B/Y box with LED's Quote Link to comment Share on other sites More sharing options...
Rick03038 Posted May 13, 2009 Report Share Posted May 13, 2009 Could this be used to switch between 2 guitars into 1 amp? Quote Link to comment Share on other sites More sharing options...
Thoughtless 7 Posted May 13, 2009 Report Share Posted May 13, 2009 Could this be used to switch between 2 guitars into 1 amp? Sure could. Quote Link to comment Share on other sites More sharing options...
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