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Old 08-04-2009, 09:04 AM   #1
JoePerry4life
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Two guitars one amp?

I was just wondering, would this work if used to play two guitars through a clean amp, would probably sound terrible with distortion, if so will it sound ok? Will one drown out the other?



The reason why I have pots are because I need something to ground the jacks to, or can I just say ground them to the side of the aluminum casing maybe?
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Old 08-04-2009, 10:04 AM   #2
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that's like a passive mixer right?.. it would work, definitely.. but you would hear a volume drop since two signals would share the input.. it could be corrected by turning the amps volume up, to your liking..
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Old 08-04-2009, 10:42 AM   #3
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Quote:
Originally Posted by deltacross
that's like a passive mixer right?.. it would work, definitely.. but you would hear a volume drop since two signals would share the input.. it could be corrected by turning the amps volume up, to your liking..


Yes its a passive mixer.
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Old 08-04-2009, 11:40 AM   #4
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Quote:
Originally Posted by JoePerry4life
Yes its a passive mixer.


i got the same schematic from beavis audio.. however, there are much more inputs and one output.. they also made use of a resistor there..

http://www.beavisaudio.com/techpages/Pots/

this is a very friendly DIY site..
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Old 08-04-2009, 11:46 AM   #5
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^^ Thanks man.
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Old 08-04-2009, 01:09 PM   #6
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In my experience, if you mess with the volume or tone knob of either guitar, it will affect the other guitar. I was never happy with this type of setup. Even with if you don't tweak the pots, the sound quality is degraded.
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Old 08-04-2009, 06:10 PM   #7
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It works ok but a little annoying.

It might much better if you had active pickups (on both)/small preamp before combining..

Im sure theres a small cheap easy mixing circuit somewhere, similar to the headphone amps..
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Old 08-04-2009, 08:17 PM   #8
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it'll work, but like someone said.. the volume of guitar 'a' is dependent on the volume/tone settings on guitar 'b'.. so a simple 2-channel active mixer would be best.

although this would work as a temporary thing, if you just want to jam with a buddy or something..
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Old 08-04-2009, 11:30 PM   #9
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One guitar will always 'override' the other. iirc the one with the lower impedance will get through.
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