Josh's Tremolo TMB Xtra Reverb

[Bieworm]

How abouts that demo?

[JMPGuitars]

How abouts that demo?

My other job's keeping me too busy, not even close to finishing this build. Actually I ran into a slight snag. I wasn't paying attention to the tube count between the circuit design and chassis design, and I needed to add another tube hole to the new chassis. So I decided to also make this 36W instead of 18W. Cause, ya know, I love them EL34s.

This is where I'm at now:

jmpguitars-amp-chassis.jpg

I think I might save the PCB I already populated for an 18W build and just build another with the 36W specs rather than modifying the board.

Thanks,
Josh

[Bieworm]

Bummer!!! How about a mosfet reverb?

[JMPGuitars]

Bummer!!! How about a mosfet reverb?

Why? Look closer at the photo, I added a tube for the reverb right next to the reverb transformer.

Yup.. I noticed. No worries then anyway. Still funny though.. that small chassis. Nice in black too

[JMPGuitars]

Some more progress happening...

Here's the chassis now, front panel, PT, etc.. wired:

JMPGuitars-XtraTMBR-Chassis.jpg

Here's the new PCB:

JMPGuitars-XtraTMBR-PCB.jpg

I'm redoing the PCB to accommodate the 36W transformers. I'm missing a resistor and a few caps, so I need to wait a couple days until they arrive before I can finish.

Thanks,
Josh

[zaphod_phil]

[quote=Bieworm post_id=252947 time=1649193711 How about a mosfet reverb?

That's a double desecration, in my opinion.

[JMPGuitars]

[quote=Bieworm post_id=252947 time=1649193711 How about a mosfet reverb?

That's a double desecration, in my opinion.

I half agree with that.

[Bieworm]

Loll!
I did another thing I never thought of doing.. I scored a Chinese greenback for cheap. Put it in my newest Tremolo TMB Xtra Gain.. really like it!!

20220415_105948.jpg

[JMPGuitars]

Loll!
I did another thing I never thought of doing.. I scored a Chinese greenback for cheap. Put it in my newest Tremolo TMB Xtra Gain.. really like it!!20220415_105948.jpg

What is that thing in the bottom of the amp?

[Bieworm]

Loll!
I did another thing I never thought of doing.. I scored a Chinese greenback for cheap. Put it in my newest Tremolo TMB Xtra Gain.. really like it!!20220415_105948.jpg

What is that thing in the bottom of the amp?

It's just a power brick I take along with me when I go to practice. I have one laying loose in every amp I play live with

That said... it's been a while since I took the TremTMB to practice. Man.. this amp is THE sh*t !!! I fear it's my number one forever.. I'm in love every time I play it in my band!!!
Planning a SE 5881 10W build in the near future .

[JMPGuitars]

It's just a power brick I take along with me when I go to practice. I have one laying loose in every amp I play live with

That said... it's been a while since I took the TremTMB to practice. Man.. this amp is THE sh*t !!! I fear it's my number one forever.. I'm in love every time I play it in my band!!!
Planning a SE 5881 10W build in the near future .

Ah, that's an interesting power strip. I forgot how weird your plugs are way ovah there.

[Bieworm]

It's just a power brick I take along with me when I go to practice. I have one laying loose in every amp I play live with

That said... it's been a while since I took the TremTMB to practice. Man.. this amp is THE sh*t !!! I fear it's my number one forever.. I'm in love every time I play it in my band!!!
Planning a SE 5881 10W build in the near future .

Ah, that's an interesting power strip. I forgot how weird your plugs are way ovah there.

I feel the same.. the other way around

[JMPGuitars]

Some more progress today:

JMPGuitars-XtraTMBR-4-16-22.jpg

It's coming along nicely...but I have to say, I don't like these new impedance switches. I wish the old style were still available.

Thanks,
Josh

[Bieworm]

Some more progress today:
JMPGuitars-XtraTMBR-4-16-22.jpg


It's coming along nicely...but I have to say, I don't like these new impedance switches. I wish the old style were still available.

Thanks,
Josh

The impedance switch making people are forcing us to choose sides. 16 ohm rules!!! Mainly because the nice old celestions are 16 ohms

[JMPGuitars]

Some more progress today:
JMPGuitars-XtraTMBR-4-16-22.jpg


It's coming along nicely...but I have to say, I don't like these new impedance switches. I wish the old style were still available.

Thanks,
Josh

The impedance switch making people are forcing us to choose sides. 16 ohm rules!!! Mainly because the nice old celestions are 16 ohms

Well, that's mainly because the original 18W OTs best coil was the 16ohm. But yeah, I did consider hard-wiring the 16ohm.

These new switches need the solder lugs to be sanded before you can solder to them. I hate that crap.

[Bieworm]

The ones I buy at Tube-Town don't. I'm pretty satisfied. The stem is too short to put on a backplate though.

[JMPGuitars]

I finished the build, but I need to troubleshoot a little. Here's how it looks:

JMPGuitars-TTMBXR-Head.jpg

I scratched the faceplate when I was making the switch hole bigger. I'll consider making a new faceplate if it's awesome, or if I decide I care. If there weren't so many darn nuts on that front panel I'd probably have done it already.

My voltages are odd, the PI is way off on one half. I'm going to test the tubes and highlighter test when I have some time.

Thanks,
Josh

[lavrgs]

I finished the build, but I need to troubleshoot a little. Here's how it looks:
JMPGuitars-TTMBXR-Head.jpg


I scratched the faceplate when I was making the switch hole bigger. I'll consider making a new faceplate if it's awesome, or if I decide I care. If there weren't so many darn nuts on that front panel I'd probably have done it already.

My voltages are odd, the PI is way off on one half. I'm going to test the tubes and highlighter test when I have some time.

Thanks,
Josh

Nice lookin' chassis

[JMPGuitars]

Nice lookin' chassis

That's true.

[Bieworm]

I finished the build, but I need to troubleshoot a little. Here's how it looks:
JMPGuitars-TTMBXR-Head.jpg


I scratched the faceplate when I was making the switch hole bigger. I'll consider making a new faceplate if it's awesome, or if I decide I care. If there weren't so many darn nuts on that front panel I'd probably have done it already.

My voltages are odd, the PI is way off on one half. I'm going to test the tubes and highlighter test when I have some time.

Thanks,
Josh

Holy Bible, Josh! I'm too drunk to be able to dial that amp in... too many knobs!