Tried to copy the Bigshot ABY

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arri93
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Tried to copy the Bigshot ABY

Post by arri93 » Thu Sep 28, 2017 12:19 pm

Image
So if you're wondering what's goin on there. Basically although I'm pretty good at soldering. I'm not an electronics expert and I have a little trouble with schematics so the way I cope with that is kind of draw out a sketch of how the actual components will look after the soldering is done. So anyway I've done it according to my sketch and it doesn't seem to work.
I'm testing with two amps an old roland cube and cheapo bass amp. The signal seems to be very very quiet on channel B.
One more thing worth noting is that on the website they claim to use a specially designed 1:1 isolation transformer. So I decieded to fill in the blanks and grab some 600ohm 1:1 isolation transformers.

Thought I might post this here in case anyone might be able to weigh in.
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molwam
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Re: Tried to copy the Bigshot ABY

Post by molwam » Thu Sep 28, 2017 1:46 pm

So you basically want the circuit like in the schematics without the tuner out, right? If so, there is something wrong with the connections between "toggle" "both" "ISO" and the transformer. You see where the wire from "toggle" to the transformer and from "both" to "iso" cross each other in the schematics? The dot on the intersection means that all these wire have to be connected to each other.

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Re: Tried to copy the Bigshot ABY

Post by molwam » Thu Sep 28, 2017 1:50 pm

Maybe this might help regarding the transformer: http://www.diystompboxes.com/smfforum/i ... c=118263.0

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arri93
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Re: Tried to copy the Bigshot ABY

Post by arri93 » Tue Oct 03, 2017 4:45 am

molwam wrote:So you basically want the circuit like in the schematics without the tuner out, right? If so, there is something wrong with the connections between "toggle" "both" "ISO" and the transformer. You see where the wire from "toggle" to the transformer and from "both" to "iso" cross each other in the schematics? The dot on the intersection means that all these wire have to be connected to each other.
Thanks for the response. I have to admit I was a little confused with the phase switch.
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