Either way is fine, PM me if you want to get it directly.
Thanks,
Josh
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Either way is fine, PM me if you want to get it directly.
I didn't get anything, shoot me an email instead. support at jmpguitars dot com
You will be the proud n°4!!!lavrgs wrote: ↑Sat 06/05/21 11:15 amDoes that include future owners...?
I am considering making a chassis, that I will call a composite; it would be constructed of machined side walls and use flat aluminum panels for front back and top. I think I've seen the original JTMs did this. Are there any big negatives? - maybe not practical for mass production but since this TMB board is on the larger size my plan to use a Mojotone chassis may have to be adjusted. What would be the ideal chassis size for the TMB Reverb? The "standard" chassis is 17 x 6.5 x 2.5
Here's mine:
How would you attach the pieces to each other? Angle aluminum? Or would you weld it together? I've been making chassis for hi-fi gear from rectangular aluminum extrusions. They're 1/8" thick, sized 10" X 2", 8" X 3", etc. I cut them to length, cut out the bottoms for working inside the chassis, then add front and rear panels that are anodized and engraved. It's a huge amount of time and work cutting all the pieces, and I probably won't continue this process when my current small inventory is used up.
My design started yesterday but when I get to a point that it's ready for review I'll post it. With a 19+ inch run I may need some center braces. The cosmetics will probably be some kind of engraved plastic - last time I sent it out and it was too expensive- since I am doing a retrofit on my mill I would like to see if I can make something. That's a ways out - later this summer. I'm at a point where I should sell an amp before I make any more but I like what I have. The Mojotone clone may be used as a donor for transformers or may be sell it.TriodeLuvr wrote: ↑Sat 06/05/21 4:14 pmHow would you attach the pieces to each other? Angle aluminum? Or would you weld it together? I've been making chassis for hi-fi gear from rectangular aluminum extrusions. They're 1/8" thick, sized 10" X 2", 8" X 3", etc. I cut them to length, cut out the bottoms for working inside the chassis, then add front and rear panels that are anodized and engraved. It's a huge amount of time and work cutting all the pieces, and I probably won't continue this process when my current small inventory is used up.
I think there are more off-the-shelf solutions for instrument amps than for hi-fi. And they're cheaper, too. A pre-made chassis for the type of gear I frequently build would cost upwards of $400 if the shop did everything (anodized and/or painted and engraved/silkscreened).
It's a never-ending problem.
Jack
Please post a pic when the work is at the point where you're comfortable showing it. I'm also using a mill, but its a bench-top model with limited movement. That really eats a lot of time when larger pieces are involved. On the upside, it's CNC, so I can engrave and fill panels without sending them out. Here are a couple photos of a subchassis I'm building for my current project. All of this is my own work, including setting the PEMs and anodizing the bias panel. It's nice to have this capability, but the work is tedious at times. I often wish I could concentrate on design and leave the mechanical stuff for someone else.lavrgs wrote: ↑Sat 06/05/21 5:15 pmMy design started yesterday but when I get to a point that it's ready for review I'll post it. With a 19+ inch run I may need some center braces. The cosmetics will probably be some kind of engraved plastic - last time I sent it out and it was too expensive- since I am doing a retrofit on my mill I would like to see if I can make something. That's a ways out - later this summer. I'm at a point where I should sell an amp before I make any more but I like what I have. The Mojotone clone may be used as a donor for transformers or may be sell it.TriodeLuvr wrote: ↑Sat 06/05/21 4:14 pmHow would you attach the pieces to each other? Angle aluminum? Or would you weld it together? I've been making chassis for hi-fi gear from rectangular aluminum extrusions. They're 1/8" thick, sized 10" X 2", 8" X 3", etc. I cut them to length, cut out the bottoms for working inside the chassis, then add front and rear panels that are anodized and engraved. It's a huge amount of time and work cutting all the pieces, and I probably won't continue this process when my current small inventory is used up.
I think there are more off-the-shelf solutions for instrument amps than for hi-fi. And they're cheaper, too. A pre-made chassis for the type of gear I frequently build would cost upwards of $400 if the shop did everything (anodized and/or painted and engraved/silkscreened).
It's a never-ending problem.
Jack
Beautiful work!TriodeLuvr wrote: ↑Sat 06/05/21 8:05 pm
Please post a pic when the work is at the point where you're comfortable showing it. I'm also using a mill, but its a bench-top model with limited movement. That really eats a lot of time when larger pieces are involved. On the upside, it's CNC, so I can engrave and fill panels without sending them out. Here are a couple photos of a subchassis I'm building for my current project. All of this is my own work, including setting the PEMs and anodizing the bias panel. It's nice to have this capability, but the work is tedious at times. I often wish I could concentrate on design and leave the mechanical stuff for someone else.
Jack
Aluminum for all items.JMPGuitars wrote: ↑Thu 06/10/21 3:27 pmSteel or aluminum? .06 is fairly thin, but you can use fender washers to strengthen/reinforce the transformer mounts.
Why only 7 knobs? Are you not using reverb or something?
Thanks,
Josh
I used Marshall washers in mine.JMPGuitars wrote: ↑Thu 06/10/21 3:27 pm...you can use fender washers to strengthen/reinforce the transformer mounts.
Did it look like this?TriodeLuvr wrote: ↑Thu 06/10/21 8:17 pmI used Marshall washers in mine.JMPGuitars wrote: ↑Thu 06/10/21 3:27 pm...you can use fender washers to strengthen/reinforce the transformer mounts.
I use that at amplifier shootouts.JMPGuitars wrote: ↑Fri 06/11/21 6:02 amDid it look like this?TriodeLuvr wrote: ↑Thu 06/10/21 8:17 pmI used Marshall washers in mine.JMPGuitars wrote: ↑Thu 06/10/21 3:27 pm...you can use fender washers to strengthen/reinforce the transformer mounts.
marshall-washer.jpg
Ha!TriodeLuvr wrote: ↑Fri 06/11/21 9:17 amI use that at amplifier shootouts.