Josh's 18W Tremolo TMB Builds

18watt-specific Tech Talk - Building, Fixing, Parts, Mods...

Moderators: zaphod_phil, Daviedawg, Graydon, CurtissRobin, colossal

Post Reply
User avatar
Bieworm
Verbose Moderator
Verbose Moderator
Posts: 2308
Joined: Mon 02/10/20 8:24 am
Location: Belgium

Re: Josh's 18W Tremolo TMB Builds

Post by Bieworm »

JMPGuitars wrote:
Mon 03/08/21 10:24 am
Bieworm wrote:
Mon 03/08/21 9:48 am
No fan of fender pickups either.. I hate duncans. They always sound cheap and blah
SD pickups are still better than Fender/Gibson pickups. Lace and DiMarzio are my favorites. They make pickups that sing and/or scream.
Yeah, but that DiMarzio thing is from a humbucker perspective... I'm a single coil man 😃
Though the superdistortion is my fav bridge humbucker
0 x
"THIS should be played at high volume..preferably in a residential area"

User avatar
JMPGuitars
Super Duper Admin
Super Duper Admin
Posts: 3969
Joined: Tue 09/18/12 8:00 pm
Location: South Central, MA
Contact:

Re: Josh's 18W Tremolo TMB Builds

Post by JMPGuitars »

Bieworm wrote:
Mon 03/08/21 10:56 am
Yeah, but that DiMarzio thing is from a humbucker perspective... I'm a single coil man 😃
Though the superdistortion is my fav bridge humbucker
I am mostly into humbuckers, that's true. Though my favorites from DiMarzio are FRED, Gravity Storm, Vintage Mini Humbucker, and a few others. They're crazy backed up right now. I have a Chopper T pickup coming for a tele bridge. I'm looking forward to hearing that with the vintage mini in the neck.

The best single coil sound I've ever heard is the Lace "Holy Grail" set, but I also love their sensor series. Gold, hot gold, green, violet, etc... All sound great. I love their Alumitone series. I think my favorite humbuckers from Lace are the Hemi series. Fantastic creamy tone, that can still crunch. Honestly I haven't heard anything from them that wasn't great, but obviously different pickups are made for different styles.

I do coil split a lot for single coil tone, and both companies sound great that way.
1 x
'I installed a skylight in my apartment yesterday... The people who live above me are furious.' - Steven Wright

Modern Ground Schemes
Soldering Technique
B+ Voltage Reduction
Amplifier Tools & Parts Info


Web Design: DolceVittoria.com
Guitars / Amps / Effects: JMPGuitars.com
(anti)Social: Facebook · Instagram
Items for Sale

User avatar
Bieworm
Verbose Moderator
Verbose Moderator
Posts: 2308
Joined: Mon 02/10/20 8:24 am
Location: Belgium

Re: Josh's 18W Tremolo TMB Builds

Post by Bieworm »

JMPGuitars wrote:
Mon 03/08/21 11:31 am
Bieworm wrote:
Mon 03/08/21 10:56 am
Yeah, but that DiMarzio thing is from a humbucker perspective... I'm a single coil man 😃
Though the superdistortion is my fav bridge humbucker
I am mostly into humbuckers, that's true. Though my favorites from DiMarzio are FRED, Gravity Storm, Vintage Mini Humbucker, and a few others. They're crazy backed up right now. I have a Chopper T pickup coming for a tele bridge. I'm looking forward to hearing that with the vintage mini in the neck.

The best single coil sound I've ever heard is the Lace "Holy Grail" set, but I also love their sensor series. Gold, hot gold, green, violet, etc... All sound great. I love their Alumitone series. I think my favorite humbuckers from Lace are the Hemi series. Fantastic creamy tone, that can still crunch. Honestly I haven't heard anything from them that wasn't great, but obviously different pickups are made for different styles.

I do coil split a lot for single coil tone, and both companies sound great that way.
You clearly know your stuff. I've been into offset f*nders for ages.. the aftermarket pickups are scarse for those. But I'm good with the ones that are available. Used to be a bigtime humbucker player for years, but in those days I wasn't into modding and tweaking. Just the standard prs and gibson stuff...
1 x
"THIS should be played at high volume..preferably in a residential area"

User avatar
JMPGuitars
Super Duper Admin
Super Duper Admin
Posts: 3969
Joined: Tue 09/18/12 8:00 pm
Location: South Central, MA
Contact:

Re: Josh's 18W Tremolo TMB Builds

Post by JMPGuitars »

Bieworm wrote:
Mon 03/08/21 11:58 am
You clearly know your stuff. I've been into offset f*nders for ages.. the aftermarket pickups are scarse for those. But I'm good with the ones that are available. Used to be a bigtime humbucker player for years, but in those days I wasn't into modding and tweaking. Just the standard prs and gibson stuff...
I love offsets. One of my favorites is a G&L SC-2 I customized: https://www.instagram.com/p/BYE2IakhWC1/

The tele bridge pickup (Chopper T) I was referring to is going into an offset tele/master style guitar I'm building. That should be fun.
1 x
'I installed a skylight in my apartment yesterday... The people who live above me are furious.' - Steven Wright

Modern Ground Schemes
Soldering Technique
B+ Voltage Reduction
Amplifier Tools & Parts Info


Web Design: DolceVittoria.com
Guitars / Amps / Effects: JMPGuitars.com
(anti)Social: Facebook · Instagram
Items for Sale

User avatar
Bieworm
Verbose Moderator
Verbose Moderator
Posts: 2308
Joined: Mon 02/10/20 8:24 am
Location: Belgium

Re: Josh's 18W Tremolo TMB Builds

Post by Bieworm »

JMPGuitars wrote:
Mon 03/08/21 12:14 pm
Bieworm wrote:
Mon 03/08/21 11:58 am
You clearly know your stuff. I've been into offset f*nders for ages.. the aftermarket pickups are scarse for those. But I'm good with the ones that are available. Used to be a bigtime humbucker player for years, but in those days I wasn't into modding and tweaking. Just the standard prs and gibson stuff...
I love offsets. One of my favorites is a G&L SC-2 I customized: https://www.instagram.com/p/BYE2IakhWC1/

The tele bridge pickup (Chopper T) I was referring to is going into an offset tele/master style guitar I'm building. That should be fun.
Nice! I saw that one in one of your videos! Love the white with the tortoise guard. It's a sunday guitar, wearing that nice suit 😇
1 x
"THIS should be played at high volume..preferably in a residential area"

User avatar
TriodeLuvr
Frequent poster
Frequent poster
Posts: 616
Joined: Tue 10/16/18 11:19 am

Re: Josh's 18W Tremolo TMB Builds

Post by TriodeLuvr »

Bieworm wrote:
Mon 03/08/21 5:46 am

You have to know that the blackface style optocell tremolo is totally different from the bias vary tremolo. I hate the opto tremolo too.. I even converted the opto style of my vibro king to bias vary for that reason
Well, the amp in this thread doesn't use either method, right? It modulates the gain of the tremolo channel by varying the B+ on the preamp stage. That means there are actually at least three methods.

My first-ever commercial amplifier was a Guild Thunder 1 that I bought new around '65 or '66. It had bias tremolo, and I hated it. Whether that was due to the specific tremolo technique I'm not sure, but to me it was just a cheesy effect that no one except Tommy James would ever use. A very different sound than the clip Josh recorded.

Jack
0 x

User avatar
Bieworm
Verbose Moderator
Verbose Moderator
Posts: 2308
Joined: Mon 02/10/20 8:24 am
Location: Belgium

Re: Josh's 18W Tremolo TMB Builds

Post by Bieworm »

TriodeLuvr wrote:
Mon 03/08/21 1:26 pm
Bieworm wrote:
Mon 03/08/21 5:46 am

You have to know that the blackface style optocell tremolo is totally different from the bias vary tremolo. I hate the opto tremolo too.. I even converted the opto style of my vibro king to bias vary for that reason
Well, the amp in this thread doesn't use either method, right? It modulates the gain of the tremolo channel by varying the B+ on the preamp stage. That means there are actually at least three methods.

My first-ever commercial amplifier was a Guild Thunder 1 that I bought new around '65 or '66. It had bias tremolo, and I hated it. Whether that was due to the specific tremolo technique I'm not sure, but to me it was just a cheesy effect that no one except Tommy James would ever use. A very different sound than the clip Josh recorded.

Jack
No this amp wiggles the signal in the preamp stage. It's a very nice tremolo effect. Strong enough.
But the bias vary on my vibro king is a copy of the brown vibroverb. That is the best trem on the planet. When you play with lots of overdrive the tremolo effect mushes up the sound, but that 6G16 tremolo holds the sound together in a superior way, oozing and swamping in a way you think your speakers are gonna blow up. Niiiiiiice!!!
0 x
"THIS should be played at high volume..preferably in a residential area"

User avatar
Bieworm
Verbose Moderator
Verbose Moderator
Posts: 2308
Joined: Mon 02/10/20 8:24 am
Location: Belgium

Re: Josh's 18W Tremolo TMB Builds

Post by Bieworm »

Josh, in the next clip please demo the reverb know with the extra caps switched on and off. Being a reverb-o-phile I'm really curious about that feature.
1 x
"THIS should be played at high volume..preferably in a residential area"

User avatar
TriodeLuvr
Frequent poster
Frequent poster
Posts: 616
Joined: Tue 10/16/18 11:19 am

Re: Josh's 18W Tremolo TMB Builds

Post by TriodeLuvr »

Bieworm wrote:
Mon 03/08/21 1:36 pm
TriodeLuvr wrote:
Mon 03/08/21 1:26 pm
Bieworm wrote:
Mon 03/08/21 5:46 am

You have to know that the blackface style optocell tremolo is totally different from the bias vary tremolo. I hate the opto tremolo too.. I even converted the opto style of my vibro king to bias vary for that reason
Well, the amp in this thread doesn't use either method, right? It modulates the gain of the tremolo channel by varying the B+ on the preamp stage. That means there are actually at least three methods.

My first-ever commercial amplifier was a Guild Thunder 1 that I bought new around '65 or '66. It had bias tremolo, and I hated it. Whether that was due to the specific tremolo technique I'm not sure, but to me it was just a cheesy effect that no one except Tommy James would ever use. A very different sound than the clip Josh recorded.

Jack
No this amp wiggles the signal in the preamp stage. It's a very nice tremolo effect. Strong enough.
But the bias vary on my vibro king is a copy of the brown vibroverb. That is the best trem on the planet. When you play with lots of overdrive the tremolo effect mushes up the sound, but that 6G16 tremolo holds the sound together in a superior way, oozing and swamping in a way you think your speakers are gonna blow up. Niiiiiiice!!!
The Thunder 1 was bias tremolo, but different in several ways. For one thing, there was no Intensity control. For another, I don't remember it being able to tremolo as slowly as the version in Josh's clip. Also, the 6G16 and Tremolo TMB appear to have more gain stages. That would change the tone quite a bit, especially when it's cranked. Maybe my negative impression of that amp's tremolo is the result of all these things together.

I'm already thinking that if I build another amp, it might be based on the Guild Thunder 1 RTV (reverb-tremolo) version. That also uses bias tremolo, but it includes an intensity control. Tone controls are based on the James bass/treble topology, not TMB. Most interesting to me is that it uses an entirely separate amplifier chain and speaker for reverb. I just happen to have two amplifier chassis from Hammond organs that do the same thing. Each chassis powers a pair of 7591 at 45-50W for the main channel, and a pair of 6GW8 at about 15W for the reverb-only output. I need to decide over the next few months whether to use these for a stereo pair (HI-FI) or two guitar amps. :D

Jack
1 x

User avatar
JMPGuitars
Super Duper Admin
Super Duper Admin
Posts: 3969
Joined: Tue 09/18/12 8:00 pm
Location: South Central, MA
Contact:

Re: Josh's 18W Tremolo TMB Builds

Post by JMPGuitars »

TriodeLuvr wrote:
Mon 03/08/21 3:07 pm
The Thunder 1 was bias tremolo, but different in several ways. For one thing, there was no Intensity control. For another, I don't remember it being able to tremolo as slowly as the version in Josh's clip. Also, the 6G16 and Tremolo TMB appear to have more gain stages. That would change the tone quite a bit, especially when it's cranked. Maybe my negative impression of that amp's tremolo is the result of all these things together.
My trem goes that slow because I doubled the 1st capacitor to reduce the speed. There are different methods to achieve slower speeds with this circuit. Merlin covers at least 1 or 2 of them on his site. I'd suggest looking over his thoughts on tremolo if you're planning on doing something funky.
0 x
'I installed a skylight in my apartment yesterday... The people who live above me are furious.' - Steven Wright

Modern Ground Schemes
Soldering Technique
B+ Voltage Reduction
Amplifier Tools & Parts Info


Web Design: DolceVittoria.com
Guitars / Amps / Effects: JMPGuitars.com
(anti)Social: Facebook · Instagram
Items for Sale

User avatar
TriodeLuvr
Frequent poster
Frequent poster
Posts: 616
Joined: Tue 10/16/18 11:19 am

Re: Josh's 18W Tremolo TMB Builds

Post by TriodeLuvr »

JMPGuitars wrote:
Mon 03/08/21 3:12 pm
TriodeLuvr wrote:
Mon 03/08/21 3:07 pm
The Thunder 1 was bias tremolo, but different in several ways. For one thing, there was no Intensity control. For another, I don't remember it being able to tremolo as slowly as the version in Josh's clip. Also, the 6G16 and Tremolo TMB appear to have more gain stages. That would change the tone quite a bit, especially when it's cranked. Maybe my negative impression of that amp's tremolo is the result of all these things together.
My trem goes that slow because I doubled the 1st capacitor to reduce the speed. There are different methods to achieve slower speeds with this circuit. Merlin covers at least 1 or 2 of them on his site. I'd suggest looking over his thoughts on tremolo if you're planning on doing something funky.
I'll review the articles at Valve Wizard. I'm pretty much done (and happy!) with this 36W as it stands. However, my next guitar project will be a tube-based vibrato for the effects loop. That will have a tremolo-type oscillator, and after hearing your clip, probably a switch to select between vibrato and tremolo. Thanks for the info!

Jack
1 x

User avatar
JMPGuitars
Super Duper Admin
Super Duper Admin
Posts: 3969
Joined: Tue 09/18/12 8:00 pm
Location: South Central, MA
Contact:

Re: Josh's 18W Tremolo TMB Builds

Post by JMPGuitars »

TriodeLuvr wrote:
Mon 03/08/21 3:44 pm
I'll review the articles at Valve Wizard. I'm pretty much done (and happy!) with this 36W as it stands. However, my next guitar project will be a tube-based vibrato for the effects loop. That will have a tremolo-type oscillator, and after hearing your clip, probably a switch to select between vibrato and tremolo. Thanks for the info!

Jack
It's funny because I'm pretty sure you mean it will switch between tremolo or tremolo. ;)
1 x
'I installed a skylight in my apartment yesterday... The people who live above me are furious.' - Steven Wright

Modern Ground Schemes
Soldering Technique
B+ Voltage Reduction
Amplifier Tools & Parts Info


Web Design: DolceVittoria.com
Guitars / Amps / Effects: JMPGuitars.com
(anti)Social: Facebook · Instagram
Items for Sale

User avatar
TriodeLuvr
Frequent poster
Frequent poster
Posts: 616
Joined: Tue 10/16/18 11:19 am

Re: Josh's 18W Tremolo TMB Builds

Post by TriodeLuvr »

JMPGuitars wrote:
Mon 03/08/21 6:54 pm

It's funny because I'm pretty sure you mean it will switch between tremolo or tremolo. ;)
Sorry, forgot who I was talking to. I meant to say it will switch between tremolo and real tremolo. :lol: :lol:

Jack
1 x

User avatar
JMPGuitars
Super Duper Admin
Super Duper Admin
Posts: 3969
Joined: Tue 09/18/12 8:00 pm
Location: South Central, MA
Contact:

Re: Josh's 18W Tremolo TMB Builds

Post by JMPGuitars »

TriodeLuvr wrote:
Mon 03/08/21 8:39 pm
JMPGuitars wrote:
Mon 03/08/21 6:54 pm

It's funny because I'm pretty sure you mean it will switch between tremolo or tremolo. ;)
Sorry, forgot who I was talking to. I meant to say it will switch between tremolo and real tremolo. :lol: :lol:

Jack
lol, exactly! *real tremolo TBD ;) ;)
2 x
'I installed a skylight in my apartment yesterday... The people who live above me are furious.' - Steven Wright

Modern Ground Schemes
Soldering Technique
B+ Voltage Reduction
Amplifier Tools & Parts Info


Web Design: DolceVittoria.com
Guitars / Amps / Effects: JMPGuitars.com
(anti)Social: Facebook · Instagram
Items for Sale

User avatar
Bieworm
Verbose Moderator
Verbose Moderator
Posts: 2308
Joined: Mon 02/10/20 8:24 am
Location: Belgium

Re: Josh's 18W Tremolo TMB Builds

Post by Bieworm »

JMPGuitars wrote:
Tue 03/09/21 6:50 am
TriodeLuvr wrote:
Mon 03/08/21 8:39 pm
JMPGuitars wrote:
Mon 03/08/21 6:54 pm

It's funny because I'm pretty sure you mean it will switch between tremolo or tremolo. ;)
Sorry, forgot who I was talking to. I meant to say it will switch between tremolo and real tremolo. :lol: :lol:

Jack
lol, exactly! *real tremolo TBD ;) ;)
...and yank the guitar's vibrato along the line..
0 x
"THIS should be played at high volume..preferably in a residential area"

User avatar
JMPGuitars
Super Duper Admin
Super Duper Admin
Posts: 3969
Joined: Tue 09/18/12 8:00 pm
Location: South Central, MA
Contact:

Re: Josh's 18W Tremolo TMB Builds

Post by JMPGuitars »

Bieworm wrote:
Tue 03/09/21 11:25 am
...and yank the guitar's vibrato along the line..
Yeah, but you play a lot of F*nder guitars, so your vibrato thinks it's a tremolo. :lol: :lol:
1 x
'I installed a skylight in my apartment yesterday... The people who live above me are furious.' - Steven Wright

Modern Ground Schemes
Soldering Technique
B+ Voltage Reduction
Amplifier Tools & Parts Info


Web Design: DolceVittoria.com
Guitars / Amps / Effects: JMPGuitars.com
(anti)Social: Facebook · Instagram
Items for Sale

User avatar
Bieworm
Verbose Moderator
Verbose Moderator
Posts: 2308
Joined: Mon 02/10/20 8:24 am
Location: Belgium

Re: Josh's 18W Tremolo TMB Builds

Post by Bieworm »

JMPGuitars wrote:
Tue 03/09/21 11:34 am
Bieworm wrote:
Tue 03/09/21 11:25 am
...and yank the guitar's vibrato along the line..
Yeah, but you play a lot of F*nder guitars, so your vibrato thinks it's a tremolo. :lol: :lol:
Naaahh. ..my offsets sport real* vibratos. Hope there aren't any lonely housewives reading here, gettin' crazy ideas 😃😃😃
0 x
"THIS should be played at high volume..preferably in a residential area"

User avatar
TriodeLuvr
Frequent poster
Frequent poster
Posts: 616
Joined: Tue 10/16/18 11:19 am

Re: Josh's 18W Tremolo TMB Builds

Post by TriodeLuvr »

LOL, didn't see that coming. :lol:
0 x

User avatar
TriodeLuvr
Frequent poster
Frequent poster
Posts: 616
Joined: Tue 10/16/18 11:19 am

Re: Josh's 18W Tremolo TMB Builds

Post by TriodeLuvr »

Seriously, I can't ever leave anything alone. What I really want (in one effects chassis) is a pitch-shifting tremolo driven by it's own LFO (low frequency oscillator), and a "standard" amplitude-shifting tremolo driven by a second LFO. I want the ability to control speed of the two independently, or to drive the two shifters simultaneously from one LFO, either in phase or out of phase with each other (selectable). That's not too much to ask, is it? :lol:

Also on this subject, if you were going to add standard tremolo to a non-tremolo Marshall using an effects loop, how would you implement it? Would you use a preamp tube as is done inside the Tremolo TMB? Would you consider an opto-coupler or some other method acceptable instead?

Jack
0 x

User avatar
Bieworm
Verbose Moderator
Verbose Moderator
Posts: 2308
Joined: Mon 02/10/20 8:24 am
Location: Belgium

Re: Josh's 18W Tremolo TMB Builds

Post by Bieworm »

TriodeLuvr wrote:
Tue 03/09/21 2:12 pm
Seriously, I can't ever leave anything alone. What I really want (in one effects chassis) is a pitch-shifting tremolo driven by it's own LFO (low frequency oscillator), and a "standard" amplitude-shifting tremolo driven by a second LFO. I want the ability to control speed of the two independently, or to drive the two shifters simultaneously from one LFO, either in phase or out of phase with each other (selectable). That's not too much to ask, is it? :lol:

Also on this subject, if you were going to add standard tremolo to a non-tremolo Marshall using an effects loop, how would you implement it? Would you use a preamp tube as is done inside the Tremolo TMB? Would you consider an opto-coupler or some other method acceptable instead?

Jack
I'm pretty impressed by the tremolo of my imperial clone. It's an IRF840 mosfet doing the wiggle
0 x
"THIS should be played at high volume..preferably in a residential area"

Post Reply