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Topic: Silver face Twin Line out? |
Tim Greene
From:
Athens Tennessee USA
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Posted 12 Apr 2013 8:18 am |
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| My 71 twin has a line out kit mounted inside thats not hooked up to anything.It consists of a lead wire thats taped off, a 220 or 330 k resistor and a .047 cap.There is a line level adjust and a jack for a direct out or for a power amp.The lead wire looks like it was soldered at the .001 or on some amps .01 cap at the phase inverter side.If I were to resolder the wire would it go between the .001 cap and pin 2 of the at7 preamp tube or on the other side of the cap at the 220k resistor junction where x and y come together. I would like to be to use this as a direct out to the board. Thanks Tim |
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Stephen Cowell
From:
Round Rock, Texas, USA
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Brad Sarno
From:
St. Louis, MO USA
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Posted 12 Apr 2013 9:58 pm
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At the input side of either 220k resistor at the junction where X and Y come together is a great place to tap a preamp out. That's where the Grateful Dead did it for Garcia's famous setup, that's where the Alembic F2B basically has it designed to exit. It's simple and works great...
If you tap off the reverb channel, you'd have reverb. If you tap the other 220k resistor you'd have the dry, "normal" channel.
One trick if you don't want to use the power amp in there but just the preamp section... you can mute the power amp section by making that rear, preamp-out jack a Tip-Ring-Sleeve type jack. Then take the "ring" of the jack and connect it to where the pair of 220k resistors meet. Then when you plug in a guitar plug to that preamp out jack, the sleeve of the plug grounds the "ring" and mutes the signal that would otherwise flow to the phase inverter stage. By grounding the signal there, you mute the amp. But since your preamp out is on the other side of the 220k resistor, you've got a good, hot signal at the preamp out...
Fun with Fenders...
B |
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Tim Greene
From:
Athens Tennessee USA
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Posted 14 Apr 2013 6:01 am
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| Thanks guys Tim |
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