Metro Marshall MOAB+ build thread

  • Thread starter Thread starter RedPlated
  • Start date Start date
SpiderWars said:
I noticed and I assumed it was pre-emptively preventing the insulation melting and looking bad.
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Most likely. Although I don't know why they wouldn't just use teflon or tefzel wire instead of PVC. No melting. Less work. Less wasted time. Holds up better than PVC too.
 
FourT6and2 said:
Most likely. Although I don't know why they wouldn't just use teflon or tefzel wire instead of PVC. No melting. Less work. Less wasted time. Holds up better than PVC too.
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Whenever I've used PVC it looked pretty good the first time I soldered. Unfortunately with me the first time is often not the last time. The pre-tinned Teflon stuff is a tiny bit harder to strip but easier in about every other way. I don't have pink tho and we all know pink sounds the best.
 
FourT6and2 said:
Most likely. Although I don't know why they wouldn't just use teflon or tefzel wire instead of PVC. No melting. Less work. Less wasted time. Holds up better than PVC too.
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I think it’s to try to add value during resale thinking coax was used in areas it wasn’t. Novice not knowing why it’s done in the first place.
 
Dang Bro, looks like you've been busy since the last time I saw you......clean work Bro.
 
Fired the amp up last night. Such a great feeling when, after all that work, countless solder connections and wiring, it starts up and works 100% right off the bat.

I always do an initial start up with a scope connected. And then set all internal voltages to my personal specs. Then play test it.

This particular amp will be the very first going out into the wild with my all new Add-a-Clean PCB clean channel system. It’s two PCB’s that contain a complete clean channel preamp, with built in filtering and switching relay. It also features a separate PCB for the pots and tone stack. It has a full EQ, Bass, Mid and Treble, as well as a 3 way bright switch. It’s an amazing sounding clean.

I haven’t officially announced it yet, so this is sort of a sneak preview of the Add-a-Clean. It’s designed to fit in limited space and works absolutely flawlessly. I’m very proud of this one, and the Add-a-Stage. They are making my builds cleaner, quieter and more reliable. I’ll make a separate thread on the AAC with an install and demo video this week.

Congrats to @grimmchaos , this is a killer amp with tons of versatility and great tone. I’m really happy that he will put it to good use. I know it’ll be used live very soon.
 

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RedPlated said:
Fired the amp up last night. Such a great feeling when, after all that work, countless solder connections and wiring, it starts up and works 100% right off the bat.

I always do an initial start up with a scope connected. And then set all internal voltages to my personal specs. Then play test it.

This particular amp will be the very first going out into the wild with my all new Add-a-Clean PCB clean channel system. It’s two PCB’s that contain a complete clean channel preamp, with built in filtering and switching relay. It also features a separate PCB for the pots and tone stack. It has a full EQ, Bass, Mid and Treble, as well as a 3 way bright switch. It’s an amazing sounding clean.

I haven’t officially announced it yet, so this is sort of a sneak preview of the Add-a-Clean. It’s designed to fit in limited space and works absolutely flawlessly. I’m very proud of this one, and the Add-a-Stage. They are making my builds cleaner, quieter and more reliable. I’ll make a separate thread on the AAC with an install and demo video this week.

Congrats to @grimmchaos , this is a killer amp with tons of versatility and great tone. I’m really happy that he will put it to good use. I know it’ll be used live very soon.
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Wow, that looks great Jeremy. How about some clips?
 
I’m so pumped to get this back and fire it up!! Thanks Jeremy!!
 
RedPlated said:
Fired the amp up last night. Such a great feeling when, after all that work, countless solder connections and wiring, it starts up and works 100% right off the bat.

I always do an initial start up with a scope connected. And then set all internal voltages to my personal specs. Then play test it.

This particular amp will be the very first going out into the wild with my all new Add-a-Clean PCB clean channel system. It’s two PCB’s that contain a complete clean channel preamp, with built in filtering and switching relay. It also features a separate PCB for the pots and tone stack. It has a full EQ, Bass, Mid and Treble, as well as a 3 way bright switch. It’s an amazing sounding clean.

I haven’t officially announced it yet, so this is sort of a sneak preview of the Add-a-Clean. It’s designed to fit in limited space and works absolutely flawlessly. I’m very proud of this one, and the Add-a-Stage. They are making my builds cleaner, quieter and more reliable. I’ll make a separate thread on the AAC with an install and demo video this week.

Congrats to @grimmchaos , this is a killer amp with tons of versatility and great tone. I’m really happy that he will put it to good use. I know it’ll be used live very soon.
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That's high level work right there. The work around the original V1 looks like it took 3 hands but building amps you're used to needing 3 hands. 🤣
 
This is killer!
Well done Jeremy, that’s beautiful work 👍
Can’t wait to hear some clips!
 
grimmchaos said:
I’m so pumped to get this back and fire it up!! Thanks Jeremy!!
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I’m excited for you to put this one through the paces…!

SpiderWars said:
That's high level work right there. The work around the original V1 looks like it took 3 hands but building amps you're used to needing 3 hands. 🤣
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Thanks!

Oh man, you know exactly how it is. That setup at v1 is always my least favorite part of doing these mods. It is a 3 hand maneuver. But the switch is so useful, I am willing to do it.

JTyson said:
This is killer!
Well done Jeremy, that’s beautiful work 👍
Can’t wait to hear some clips!
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Appreciate it! Will have them up soon.
 
Not a bad looking amp…

Here’s an unlisted demo clip of the Add-a-Clean that I’ll be using for the intro to the demo video. It’s no joke. Rivals any good Fender in terms of sound and response.

 

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Last edited:
That clean sounds really good. Do you think you could use the other half of the Clean/Dirty relay to switch the NFB? I've often thought that was one of the limiting factors in Clean/Dirty channel switchers that you had to pick an NFB that worked for both but it seems sometimes they need different values.
 
SpiderWars said:
That clean sounds really good. Do you think you could use the other half of the Clean/Dirty relay to switch the NFB? I've often thought that was one of the limiting factors in Clean/Dirty channel switchers that you had to pick an NFB that worked for both but it seems sometimes they need different values.
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Yeah you totally could.

Oddly enough, I find myself using the NFB in roughly the same places for both channels.

I end up between around 68-82k or so on the gain channel when I measure the pot plus the inline resistor. This is on 8 ohm tap. I’ve tried running it lower on the clean and I don’t like it as much. It works really well in the sense that the clean lines up well with the same power section settings as the OD.
 
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