Overdrive Reverb/Steel String Singer Hybrid
Moderators: pompeiisneaks, Colossal
Re: Overdrive Reverb/Steel String Singer Hybrid
Do you see anything suspicious around the effects loop jacks, their chassis ground, or how the cable shield grounds are connected? You've lasso'd the shielded wires with what looks like a conductive wire on the preamp ground buss. Is there something there? Ground loop, perhaps?
Just plug it in, man.
-
- Posts: 1073
- Joined: Tue Jul 02, 2013 12:51 am
- Location: East Texas (Yee Yee!)
Re: Overdrive Reverb/Steel String Singer Hybrid
.
Last edited by beasleybodyshop on Sat Nov 11, 2023 4:15 pm, edited 1 time in total.
"It's like what Lenin said... you look for the person who will benefit, and, uh, uh..."
-
- Posts: 1073
- Joined: Tue Jul 02, 2013 12:51 am
- Location: East Texas (Yee Yee!)
1 others liked this
Re: Overdrive Reverb/Steel String Singer Hybrid
Solved!
Long story short, between performing the PI balance procedure and moving around the PI grid input wire the noise is entirely gone!
Amp sounds absolutely bonkers. I need to get the FET preamp working, so will report back when i get there.
Filters do indeed load the circuit down quite a bit. But amp sounds great with or without them in. Very useable.
Will report back!
Long story short, between performing the PI balance procedure and moving around the PI grid input wire the noise is entirely gone!
Amp sounds absolutely bonkers. I need to get the FET preamp working, so will report back when i get there.
Filters do indeed load the circuit down quite a bit. But amp sounds great with or without them in. Very useable.
Will report back!
"It's like what Lenin said... you look for the person who will benefit, and, uh, uh..."
-
- Posts: 721
- Joined: Sat Jan 03, 2009 12:24 pm
- Location: Delft, The Netherlands
1 others liked this
Re: Overdrive Reverb/Steel String Singer Hybrid
Great to hear! I saw the cathode and grid wire of the PI were very close. You might want to rewire the cathode wire to the right side of the PI tube socket. Dumble does that consistently, at least in the pictures his amps I have.
Also, I don’t see grid stoppers on the output tubes? Are they there?
Also, I don’t see grid stoppers on the output tubes? Are they there?
-
- Posts: 1084
- Joined: Fri Apr 16, 2010 9:04 am
- Location: Santa Cruz, CA
Re: Overdrive Reverb/Steel String Singer Hybrid
Curious how the filters work in tandem with the overdrive circuit. Must be bonkers
Charlie
-
- Posts: 1073
- Joined: Tue Jul 02, 2013 12:51 am
- Location: East Texas (Yee Yee!)
3 others liked this
Re: Overdrive Reverb/Steel String Singer Hybrid
Spent some more time dialing it in, and then stuck it back in the headshell I built for it several years ago. Need to make some final adjustments to the cab but i'm very pleased with how it turned out.
Tone is amazing, will post some decent recorded clips when i get back in a few weeks. Stay tuned!
Tone is amazing, will post some decent recorded clips when i get back in a few weeks. Stay tuned!
You do not have the required permissions to view the files attached to this post.
"It's like what Lenin said... you look for the person who will benefit, and, uh, uh..."
-
- Posts: 1073
- Joined: Tue Jul 02, 2013 12:51 am
- Location: East Texas (Yee Yee!)
2 others liked this
Re: Overdrive Reverb/Steel String Singer Hybrid
Attached final Layout and Schematic.
Note - Layout does not include Clean Channel Master volume - but that is easy enough to add between the OD drive and Reverb Dwell pots on the back of the amp. Layout is 95 percent correct. Always reference schematic.
Note - Layout does not include Clean Channel Master volume - but that is easy enough to add between the OD drive and Reverb Dwell pots on the back of the amp. Layout is 95 percent correct. Always reference schematic.
You do not have the required permissions to view the files attached to this post.
"It's like what Lenin said... you look for the person who will benefit, and, uh, uh..."
-
- Posts: 387
- Joined: Mon Apr 02, 2007 3:52 pm
- Location: Dallas area
- Contact:
Re: Overdrive Reverb/Steel String Singer Hybrid
Very nice work! This is basically what my El Patron amp is. Are the grid leaks on the output tubes really 47K? I normally see 470K resistors there.
-
- Posts: 1073
- Joined: Tue Jul 02, 2013 12:51 am
- Location: East Texas (Yee Yee!)
1 others liked this
Re: Overdrive Reverb/Steel String Singer Hybrid
Yes I believe so.txbluesboy wrote: ↑Tue Nov 14, 2023 6:39 pm Very nice work! This is basically what my El Patron amp is. Are the grid leaks on the output tubes really 47K? I normally see 470K resistors there.
You're out of Grand Prairie right? I'm over in East Dallas/Garland. Not too far away.
"It's like what Lenin said... you look for the person who will benefit, and, uh, uh..."
-
- Posts: 1073
- Joined: Tue Jul 02, 2013 12:51 am
- Location: East Texas (Yee Yee!)
1 others liked this
Re: Overdrive Reverb/Steel String Singer Hybrid
Also,
You all should try subbing Echoplex EP3 preamp values in lieu of the normal FET. It's so wonderful! Normal impedance too.
You all should try subbing Echoplex EP3 preamp values in lieu of the normal FET. It's so wonderful! Normal impedance too.
"It's like what Lenin said... you look for the person who will benefit, and, uh, uh..."
-
- Posts: 387
- Joined: Mon Apr 02, 2007 3:52 pm
- Location: Dallas area
- Contact:
Re: Overdrive Reverb/Steel String Singer Hybrid
I am in Grand Prairie. We should get together sometime.
-
- Posts: 1084
- Joined: Fri Apr 16, 2010 9:04 am
- Location: Santa Cruz, CA
Re: Overdrive Reverb/Steel String Singer Hybrid
Another ODs sss hybrid , very cool , did you keep the filters too ?txbluesboy wrote: ↑Tue Nov 14, 2023 6:39 pm Very nice work! This is basically what my El Patron amp is.
Charlie
-
- Posts: 387
- Joined: Mon Apr 02, 2007 3:52 pm
- Location: Dallas area
- Contact:
Re: Overdrive Reverb/Steel String Singer Hybrid
I didn't really like the filters on a couple of other amps I built. Too lossy and really I only used 1 setting on the high filter.
I hard wire this low pass filter setting in most of my amps.
I hard wire this low pass filter setting in most of my amps.
Last edited by txbluesboy on Thu Nov 16, 2023 8:55 pm, edited 1 time in total.
-
- Posts: 387
- Joined: Mon Apr 02, 2007 3:52 pm
- Location: Dallas area
- Contact:
Re: Overdrive Reverb/Steel String Singer Hybrid
https://youtu.be/IZxiDoiJHhY?si=zlENKXn1Yhq1Evmr
Here is a demo a user posted of his El Patron.
Here is a demo a user posted of his El Patron.
-
- Posts: 1084
- Joined: Fri Apr 16, 2010 9:04 am
- Location: Santa Cruz, CA
1 others liked this
Re: Overdrive Reverb/Steel String Singer Hybrid
That’s the forward and present sustain I have come to recognize from these hybrids . You know what’s fun ? Listening to your favorite music . Plug a phone into the active effects return and you have a sweet hifi tube sound lol doing it as we speak , ev12l sounds great for playbacktxbluesboy wrote: ↑Thu Nov 16, 2023 8:48 pm https://youtu.be/IZxiDoiJHhY?si=zlENKXn1Yhq1Evmr
Here is a demo a user posted of his El Patron.
Charlie