What’s on *YOUR* workbench?

It's aliiiive! 32-channel amp, 125W/ch unclipped. Balanced ins, Speakon outs. External PSU (1200W). So far, no fires in 1 day!
The fans are Noctua, undervolted, barely spinning, inaudible even in a quiet control room.
 

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Had stage-band rehearsal tonight, couldn't get going on this 'til about 1am. It's now past 4:30am...

Nothing soldered, just gathering the bits to see what I still need.

Out of 3k9 (have 1/8w, but may as well order 1/4 as I have a bit of time before the IC is sorted (see below);
Out of 1N914;
Out of jacks (will steal them from another build);
Have a few through-hole J201, but want to find my SMD version and practice soldering the little gnat in there;
Dozens of various voltage regulators, but no 78L06 to be found (need some for my Aion Blue Shift builds, too);
Have to order the pots — where the hell did all my pots (& parts) go?
Missed out on the IC, but Mr SheepyLove is working on a solution.
May as well order some 22n box-film, and replace the Panasonic 22n mylar Chiclet lower left while I'm at it.

Gotta think of aesthetics: enclosure-colour, knobs, graphics etc...

[EDIT mornin' after: WhOoPs — almost forgot, that 102 in the lower right is supposed to be 103. Pro-tip from an amateur:
don't build when you're tired and should be sleeping anyway. Hmmm, this seems to be a recurring theme with me.]
 
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I've settled into a process of lettering with Posca markers, then top coating with aerosol clear coat, but I live in the northeast US where the winters are long and too cold for painting outside.

Around when the "what does your backlog look like" thread got posted, I realized I had a lot of boards I'd like to build over the winter, but no plan for the enclosures.

This stockpile should be enough to keep me busy for a while.
 
JTEX said:
It's aliiiive! 32-channel amp, 125W/ch unclipped. Balanced ins, Speakon outs. External PSU (1200W). So far, no fires in 1 day!
The fans are Noctua, undervolted, barely spinning, inaudible even in a quiet control room.
Click to expand...
Are those boards your design? Very cool!
 
Erik S said:
View attachment 58781

I've settled into a process of lettering with Posca markers, then top coating with aerosol clear coat, but I live in the northeast US where the winters are long and too cold for painting outside.

Around when the "what does your backlog look like" thread got posted, I realized I had a lot of boards I'd like to build over the winter, but no plan for the enclosures.

This stockpile should be enough to keep me busy for a while.
Click to expand...
That penmanship tho
 
Finally pieced together this JM. It's a purply MJT body that I paid extra to have dinged up....:unsure: The neck is from Musikraft and is 3A QS roasted maple that really ties this baby together adorned with Hipshot vintage machine heads. The CuNiFi pups don't hinder the cause, and the Mastery bridge is indeed that. I'm not a huge fan of the tremolo but it's there (for sure) if I get a hankerin'.

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JTEX said:
It's aliiiive! 32-channel amp, 125W/ch unclipped. Balanced ins, Speakon outs. External PSU (1200W). So far, no fires in 1 day!
The fans are Noctua, undervolted, barely spinning, inaudible even in a quiet control room.
Click to expand...
Very nice! 32x125W out of a 1200W PSU? What black magic is this?
Even at 50% output, wouldn't they still need ~1400W PSU?
(125(0.707) x 32) / 0.50
Not doubting your design here but instead my own intellect.
 
jwin615 said:
Very nice! 32x125W out of a 1200W PSU? What black magic is this?
Even at 50% output, wouldn't they still need ~1400W PSU?
(125(0.707) x 32) / 0.50
Not doubting your design here but instead my own intellect.
Click to expand...
Actual music typically has a maximum duty cycle between 1/8th and 1/3rd of rated power. Take a look at the current consumption specs on many pro sound amps. ;)
 
fig said:
Are those boards your design? Very cool!
Click to expand...
Noo, they're from Amazon. I did have to modify the heck out of them before they worked right. They had a whole bunch of issues. Main problem, they'd go into protection at around 20W into 4 Ohms. Honestly, had I known how much trouble they'd be, I probably would have designed my own boards instead. But they were cheap, had two genuine TPA3255 chips, the right output inductors, balanced inputs with the right type of connectors for what I have on hand... For like $70 CAD apiece. Couldn't resist.
 
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jwin615 said:
Very nice! 32x125W out of a 1200W PSU? What black magic is this?
Even at 50% output, wouldn't they still need ~1400W PSU?
(125(0.707) x 32) / 0.50
Not doubting your design here but instead my own intellect.
Click to expand...
Of course, the PSU can't support all amps running at full power simultaneously, but there's no need for that. Like Passinwind said, the duty cycle with actual music material is perhaps on the order of 1/4 or less, and I added plenty of bulk capacitors around the amp to deal with random short-term peaks without drawing directly from the PSU. It would be a waste to spec a supply that could support full power on all 32 channels at the same time, which would never happen in real use. Also, the 1200WPSU can put out 1800W short term,so there's that. It will pop the breaker at that point anyway, unless I plug it in two different 120V circuits (it's actually made out of two 600W supplies).
 
Passinwind said:
Actual music typically has a maximum duty cycle between 1/8th and 1/3rd of rated power. Take a look at the current consumption specs on many pro sound amps. ;)
Click to expand...
Got you there. Classical vs +2 LUFS techno... The 125W "unclipped" had me questioning wether this had been accounted for in some fashion.

JTEX said:
Of course, the PSU can't support all amps running at full power simultaneously, but there's no need for that. Like Passinwind said, the duty cycle with actual music material is perhaps on the order of 1/4 or less, and I added plenty of bulk capacitors around the amp to deal with random short-term peaks without drawing directly from the PSU. It would be a waste to spec a supply that could support full power on all 32 channels at the same time, which would never happen in real use. Also, the 1200WPSU can put out 1800W short term,so there's that. It will pop the breaker at that point anyway, unless I plug it in two different 120V circuits (it's actually made out of two 600W supplies).
Click to expand...
Having no idea what was going through it or how loud, I get it now.
I guess when I hear immersive audio, I immediately think LOUD... Because if I were to do an immersive installation, I'm sure I'd overdo it.
What'd you say?

Sweet build. Congrats on finishing it up. Make sure you play DSOTM on it at some point. ;)
 
fig said:
Finally pieced together this JM. It's a purply MJT body that I paid extra to have dinged up....:unsure: The neck is from Musikraft and is 3A QS roasted maple that really ties this baby together adorned with Hipshot vintage machine heads. The CuNiFi pups don't hinder the cause, and the Mastery bridge is indeed that. I'm not a huge fan of the tremolo but it's there (for sure) if I get a hankerin'.

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Click to expand...
I really love the mastery bridge I have on one of my guitars. Stays in tune nicely and I feel like it gives a “spongy” response to picking. Not sure if that makes sense, it’s hard to explain.
 
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