45 100 layout question

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BLOOZE
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45 100 layout question

Post by BLOOZE » Thu Jan 26, 2012 10:51 am

I m working on my 45 100 and
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I wonder if turning around the 8k2 that connects to v4 pin 6 makes a cleaner built.

How are the originals wired – on the pics from amparchive ,george and chris m this 8k2 resistor is connected on the tube side.

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from amp archives

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has there been a 45 100 with preamp filter 32uf on board or should this be a 16uf - ?
i know about the 32uf + 32uf filtering

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Re: 45 100 layout question

Post by Roe » Thu Jan 26, 2012 11:52 am

yes, originals had the 8k2 turned around (compared to the layout). they had 16uf on the preamp although the dickinson amp, and some 67 amps, had 32+32
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Re: 45 100 layout question

Post by BLOOZE » Thu Jan 26, 2012 12:03 pm

Roe wrote:yes, originals had the 8k2 turned around (compared to the layout). they had 16uf on the preamp although the dickinson amp, and some 67 amps, had 32+32
Roe - great thank you for your help

i m building a 12xxx clone too - are the resistors(10k and 8k2 ) also turned around (compared to the layout).

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Re: 45 100 layout question

Post by Roe » Fri Jan 27, 2012 3:30 am

yes, that one is also turned around
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Re: 45 100 layout question

Post by Big Mike » Tue Jan 31, 2012 12:43 pm

I'm not following 'turned around' ?
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Re: 45 100 layout question

Post by BLOOZE » Wed Feb 01, 2012 10:13 am

Big Mike wrote:I'm not following 'turned around' ?
Question was about, were the orig 45 100 or 12xxx connects the choke with the 8k2...............

I will connect it on the tube side of the board………on the layout the choke is connected at the potentiometer side of the board…………….

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