JMP 2203 build
Moderators: greatmutah, GuitarBilly
JMP 2203 build
I've been planning this one for a while since I knew I had time off coming up, which really worked out because half of the stuff is out of stock now. It's the Metro 100W MV kit from ValveStorm and I'm having a headshell built by Sourmash with the extra rounded corners on the front cutout, but that hasn't made it here yet since I left it a bit late. The transformers are Heyboer from AmpPartsDirect. I actually started last week so I'm done a bunch of it, but here are some progress pics anyway. The full album is here if anyone's interested and I'll be adding photos as I go: https://imgur.com/a/W4GLG8d
Last edited by iff on Mon Sep 13, 2021 11:18 pm, edited 1 time in total.
Re: JMP 2203 build
Sensual
Whatnow2012 wrote:try humberck piskup is bettor for metal than singlecpoil for blues
Unstrung wrote:ya it am bast
Rampage wrote:When life hands you distortion, fuck everything else.
_________________
Rigs:
Bauer-Burny-Dark Matter-Hamer-Ibanez-Starfield-Warwick
Fryette PowerStation, Peavey 5150 2x12, Peavey VTM60, Starfield VPA-1, Sound City Master Lead 50, VVT Simo-Plex, Taurus THD450
- itchyfingers
- Crystal Lettucer
- Posts: 10987
- Joined: Tue May 28, 2013 1:51 am
Re: JMP 2203 build
Very tidy! Keep those pics coming...
- GuitarBilly
- Chief Executive Owl
- Posts: 48416
- Joined: Thu Jan 17, 2013 9:03 pm
Re: JMP 2203 build
Damn!! Looking good!!! Are you going to keep it stock or hot-rod it a bit?
And I can attest to the quality of the Sourmash headshells, that's what I had on my Ceriatone 2204 (which was actually a kit that guys at SM put together).
And I can attest to the quality of the Sourmash headshells, that's what I had on my Ceriatone 2204 (which was actually a kit that guys at SM put together).
Guitars:
'78 Les Paul Pro / '89 SG Special/ '04 Gibson Les Paul Classic 3 pickup / Jackson Star/ Endres Tele / Fernandes Rhoads/ ''74 Hohner MIJ strat/ 2 Partscasters
Amps:
Depends on when you ask. I got tired of constantly updating this section lol
Cabs
Marshall 1960A w V30s/ Seismic 2x12 w Redback and V30.
Questions about the forum: please PM here. Can't access the forum? Need a password reset? Please access our Facebook page https://www.facebook.com/GuitarGearForumOfficial and message me through it.
'78 Les Paul Pro / '89 SG Special/ '04 Gibson Les Paul Classic 3 pickup / Jackson Star/ Endres Tele / Fernandes Rhoads/ ''74 Hohner MIJ strat/ 2 Partscasters
Amps:
Depends on when you ask. I got tired of constantly updating this section lol
Cabs
Marshall 1960A w V30s/ Seismic 2x12 w Redback and V30.
Questions about the forum: please PM here. Can't access the forum? Need a password reset? Please access our Facebook page https://www.facebook.com/GuitarGearForumOfficial and message me through it.
Re: JMP 2203 build
GuitarBilly wrote:Damn!! Looking good!!! Are you going to keep it stock or hot-rod it a bit?
And I can attest to the quality of the Sourmash headshells, that's what I had on my Ceriatone 2204 (which was actually a kit that guys at SM put together).
No plans yet, but I'm sure I'll play with it a bit once I have it up and running. Not really hotrodding, but I do plan on switching to 6550s at some point.
Re: JMP 2203 build
Oh yeah, I also picked up a used HotMod recently so that'll hopefully satisfy any hotrodding itch at least short term
Re: JMP 2203 build
The chassis wiring is pretty much done and I've installed the bus wire on the board. The instructions are missing the page with the ~30 board-to-chassis wire lengths so I'm spending some time figuring those all out to post on the Metro forum for anyone who builds this in the future.
Re: JMP 2203 build
I've got the board wired and in the chassis now, with the preamp sockets hooked up. I have to take a break for a few days so I'll be finishing next week. The headshell is scheduled to be delivered next week so it'll be right on time!
Re: JMP 2203 build
Hopefully done wiring! I had to cut the testing short last night, but so far everything is all good. I'm just scared to screw up drilling the headshell now.
- itchyfingers
- Crystal Lettucer
- Posts: 10987
- Joined: Tue May 28, 2013 1:51 am
Re: JMP 2203 build
Again, looking tidy AF man. Good luck on the headshell!
- TurboPablo
- Crystal Lettucer
- Posts: 29153
- Joined: Fri Jan 18, 2013 9:27 am
Re: JMP 2203 build
Damn that is gorgeous. Great work!
Re: JMP 2203 build
All the voltages are as expected except for V3, where they're way too high. Pin 1 and 6 seem reasonable based on other voltages that I'm measuring, but 2/3/7/8 seem totally off. I've tried swapping the tube and it made no difference. Not sure what's going on here...
Measured (Expected):
Pin 1 - 276 (218)
Pin 2 - 98 (28)
Pin 3 - 151 (42)
Pin 6 - 270 (214)
Pin 7 - 105 (28)
Pin 8 - 151 (42)
Measured (Expected):
Pin 1 - 276 (218)
Pin 2 - 98 (28)
Pin 3 - 151 (42)
Pin 6 - 270 (214)
Pin 7 - 105 (28)
Pin 8 - 151 (42)
-
- Hall of Fame Member
- Posts: 3733
- Joined: Wed Apr 10, 2013 8:50 pm
Re: JMP 2203 build
damn that's coming together really nicely....
Re: JMP 2203 build
Someone on another forum pointed out that I got the colours backward and mistakenly hooked up a 270K resistor to the presence pot instead of a 4.7K one (red-violet-yellow instead of yellow-violet-red). After swapping that, the readings are good and I'll hopefully get a chance to play tomorrow!
Re: JMP 2203 build
It's alive! Here's a quick boosted clip while I put off drilling the headshell.
- itchyfingers
- Crystal Lettucer
- Posts: 10987
- Joined: Tue May 28, 2013 1:51 am
Re: JMP 2203 build
Fuck yeah man, sounds mean as hell! You gotta be stoked.
Re: JMP 2203 build
Fuck yea
Whatnow2012 wrote:try humberck piskup is bettor for metal than singlecpoil for blues
Unstrung wrote:ya it am bast
Rampage wrote:When life hands you distortion, fuck everything else.
_________________
Rigs:
Bauer-Burny-Dark Matter-Hamer-Ibanez-Starfield-Warwick
Fryette PowerStation, Peavey 5150 2x12, Peavey VTM60, Starfield VPA-1, Sound City Master Lead 50, VVT Simo-Plex, Taurus THD450
Re: JMP 2203 build
I realized that I never posted the final result - here we are:
-
- Hall of Fame Member
- Posts: 909
- Joined: Fri Jan 18, 2013 8:13 am
Re: JMP 2203 build
Good stuff - looks and sounds great!
Re: JMP 2203 build
Fantastic job!
Re: JMP 2203 build
Way to bring the action!
Cameron Amps wrote:He's right....I think VTMs sound great....go get one. No nos tubes needed.
TurboPablo wrote:Scribble strips are for kids.
Re: JMP 2203 build
That looks fantastic.
- GuitarBilly
- Chief Executive Owl
- Posts: 48416
- Joined: Thu Jan 17, 2013 9:03 pm
Re: JMP 2203 build
Man the amp looks and sounds great!! Amazing job!!
Guitars:
'78 Les Paul Pro / '89 SG Special/ '04 Gibson Les Paul Classic 3 pickup / Jackson Star/ Endres Tele / Fernandes Rhoads/ ''74 Hohner MIJ strat/ 2 Partscasters
Amps:
Depends on when you ask. I got tired of constantly updating this section lol
Cabs
Marshall 1960A w V30s/ Seismic 2x12 w Redback and V30.
Questions about the forum: please PM here. Can't access the forum? Need a password reset? Please access our Facebook page https://www.facebook.com/GuitarGearForumOfficial and message me through it.
'78 Les Paul Pro / '89 SG Special/ '04 Gibson Les Paul Classic 3 pickup / Jackson Star/ Endres Tele / Fernandes Rhoads/ ''74 Hohner MIJ strat/ 2 Partscasters
Amps:
Depends on when you ask. I got tired of constantly updating this section lol
Cabs
Marshall 1960A w V30s/ Seismic 2x12 w Redback and V30.
Questions about the forum: please PM here. Can't access the forum? Need a password reset? Please access our Facebook page https://www.facebook.com/GuitarGearForumOfficial and message me through it.
- TurboPablo
- Crystal Lettucer
- Posts: 29153
- Joined: Fri Jan 18, 2013 9:27 am
Re: JMP 2203 build
That is definitely unreal. Beautiful work!