I have the Anatek, the kit model and it took me all of 1 hour to build it .
Very cost effective in that form!
Pignose G40V tone nuance question...
Moderators: pompeiisneaks, Colossal
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Stevem
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Re: Pignose G40V tone nuance question...
When I die, I want to go like my Grandfather did, peacefully in his sleep.
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
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Stevem
- Posts: 4750
- Joined: Fri Jan 24, 2014 3:01 pm
- Location: 1/3rd the way out one of the arms of the Milkyway.
Re: Pignose G40V tone nuance question...
I have the Anatek, the kit model and it took me all of 1 hour to build it .
Very cost effective in that form!
Also note that I have made a mistake in telling you I did the mod on the Blue guitar site, I did not do those on mine and I can not recall what site I got them from .
I do have the info stored away at home and I will dig it out tonight for ya!
Very cost effective in that form!
Also note that I have made a mistake in telling you I did the mod on the Blue guitar site, I did not do those on mine and I can not recall what site I got them from .
I do have the info stored away at home and I will dig it out tonight for ya!
When I die, I want to go like my Grandfather did, peacefully in his sleep.
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
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Stevem
- Posts: 4750
- Joined: Fri Jan 24, 2014 3:01 pm
- Location: 1/3rd the way out one of the arms of the Milkyway.
Re: Pignose G40V tone nuance question...
The mod to do on the gv40 is very simple it involes changing one resistor ( r17 ) from its 100k 1/2 watt rating to a 22k 1 watt, then changing V2 to a 12at7 so that stage will now saturate longer before it goes into hard clipping.
When I die, I want to go like my Grandfather did, peacefully in his sleep.
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
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pompeiisneaks
- Site Admin
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Re: Pignose G40V tone nuance question...
I got this one due to Uncle Doug's recommendation Anatek Blue:
https://www.ebay.com/i/181463391631?chn=ps&dispItem=1
But I hear others speak highly of the peak:
http://www.ebay.com/itm/Peak-Atlas-ESR7 ... 1463391631
I am just grabbing those, they may not be the very best prices, just wanted to show you the actual meters.
https://www.ebay.com/i/181463391631?chn=ps&dispItem=1
But I hear others speak highly of the peak:
http://www.ebay.com/itm/Peak-Atlas-ESR7 ... 1463391631
I am just grabbing those, they may not be the very best prices, just wanted to show you the actual meters.
tUber Nerd!
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Stevem
- Posts: 4750
- Joined: Fri Jan 24, 2014 3:01 pm
- Location: 1/3rd the way out one of the arms of the Milkyway.
Re: Pignose G40V tone nuance question...
Also take note that these amps have no input resistor into the first gain stage so adding even a 33K is a good idea to cut radio pick up.
When I die, I want to go like my Grandfather did, peacefully in his sleep.
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Re: Pignose G40V tone nuance question...
I am sorry for the delay with my responce - had a super busy week at work. Here is what I did on that amp- I did install 18K grid resistor on V1a and I did bump Cathode cap on V1B from 0.047 to 0.068 uf - it did help to soften an overdrive and the clipping of the sine wave on the second grid went away. I also built adjustable Bias circuit and the owner of the amp had a blast playing with the tone variations that we were getting out of it. I will attach the photo of my bias circuit:
I also changed the first tube from 12ax7 to 12at7 and it also helped to control some of the dirt that the amp was making at low volume before. Thank you guys for all the help. Now I need to buy me a Birthday present (aug 15th I turn 45 yo). I am thinking about getting ESR meter - crazy, hah?
I need to study more on trouble shooting with the scope, but not today
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Stevem
- Posts: 4750
- Joined: Fri Jan 24, 2014 3:01 pm
- Location: 1/3rd the way out one of the arms of the Milkyway.
Re: Pignose G40V tone nuance question...
So you now have a 1 ohm 1% 2 watt resistor in series to ground off of each pin 8 to measure current?
When I die, I want to go like my Grandfather did, peacefully in his sleep.
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Re: Pignose G40V tone nuance question...
On all the amps that I built I do have them, but on this one I did not install them. I just used the resistance of the OT primary and its voltage drop to calculate the current drawn. I do know that those 1ohm resistors is the way to go, but I did not feel I needed to mess with it in this case.