Me: "I think that for J I'll go for Dual Mono in a single cabinet"
ZM: "Take a Dissipante 4U/400"
Me: "It's too big for my rack"
ZM: "Change rack"
Done 😀
The Infinite Improbability Audio Rack
View attachment 967259
That's somewhat similar to a couple racks I built last year. The main differences are: I used poplar plywood; copper plumbing pipe; and I put a poplar border along the edge of the plywood. There's a dado that runs down the middle, so it fits right onto it.
If you want to finish the edges of something like this more simply, you can use edge banding. It just irons on, very easily. Quite cheap. Then you have to trim it, using one of these. It takes a couple tries to get the hang of it, but also easy.
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Riki: that’s a great looking rack you’ve built! It seems that everyone but me used some sort of tubing to hide the allthread - though I made mine about 18 years ago.
Jmpyoung: wow - that’s a very clean and neat work bench. Mine has all sorts of partial holes drilled in it and random stains from oil, paint, and various wood finishers.
Jmpyoung: wow - that’s a very clean and neat work bench. Mine has all sorts of partial holes drilled in it and random stains from oil, paint, and various wood finishers.
Quick one: what’s the upper limit for JFET IDSS in this circuit? Meaning how high can the IDSS be before other changes have to be made? I have some matched approx 6.5-8mA original Toshibas.
Nope. I have one in basement with exposed threads. lot of fiddling to redo now...
Russellc
No practical upper limit. The Toshiba and LS parts go up to about 12 mA. Minimum is about the bias current in the circuit.
Thanks, Russel and Papa!
I initially thought so, but when I saw the store kit JFETs @ 4-5mA I just had to ask. Considering this circuit in a possible biamp config with the slot loaded OB’s, but the idea is only just taking shape. If so considering the 6/24 crossover of your/Papas making. Hoping for both sugar and punch paired with my BA-3.
Have a few reels of output 240s too. Am I right in that the need for matching is two and two/pairs or are quads nescessary? Store fets are 8 pcs, but I read Chokys post about matching needs a while back, and read that as pairs. But my eyes are not those of a thermal physicist or seasoned DIY’er.
Regards,
Andy
I initially thought so, but when I saw the store kit JFETs @ 4-5mA I just had to ask. Considering this circuit in a possible biamp config with the slot loaded OB’s, but the idea is only just taking shape. If so considering the 6/24 crossover of your/Papas making. Hoping for both sugar and punch paired with my BA-3.
Have a few reels of output 240s too. Am I right in that the need for matching is two and two/pairs or are quads nescessary? Store fets are 8 pcs, but I read Chokys post about matching needs a while back, and read that as pairs. But my eyes are not those of a thermal physicist or seasoned DIY’er.
Regards,
Andy
