Schematic needed: Trident S100/Soundtech S416.....

[jrfrond]

Keeping it short and to the point, when I made the slow switch over to JJ's, our tube reliability problems, for the most part, went away. Sure, we get an...

[jrfrond]

If you think THAT is a lie, wait until you start decoding Class D specs! Tiny little chips, little to know cooling systems..... 1000W. REALLY??? Perhaps for...

[jrfrond]

Try the OptiVisor with the optional Quasar LED lighting system, a frame of six high-brightness LED's that fit around the lens. Worth it's weight in gold....

[jrfrond]

This is interesting Doug, because I have MOSTLY positive memories of servicing Ensoniq. It didn't start to suck until the company was in trouble, when they...

[jrfrond]

It's hard to believe that someone would attempt to repair unit like this, which was a piece of crap to begin with, over the course of two years. There's...

[jrfrond]

We replace entire modules on those. It's the best bet, and the most reliable repair.

[jrfrond]

David???

[jrfrond]

Tech 21 has never given out schematics or authorized any service centers, as they (rightfully) want to protect the design of their SansAmp circuit. Good luck...

[jrfrond]

The cathodyne phase splitter is unity gain (input = output), requiring a driver stage before it.

The Schmitt, or Long-Tail Pair, also amplifies...

[jrfrond]

I rarely get involved in discussions about the DDX3216, because, quite frankly, they were born bad. Lots of issues, right out of the box. Even more down the...

[jrfrond]

You can decouple your AC lines, use RFI filters all over the place, and you STILL will not be able to limit every RFI and EMI source. Even if you were to...

[jrfrond]

You need to insert a dropping resistor in series with each screen to limit screen current. The Pi-filter arrangement with the choke runs the screens too close...

[jrfrond]

No Behringer service center in their right mind repairs those. Only a board swap. The board topology and construction does not readily lend itself to repair....

[jrfrond]

I usually use this: Tungsten Diagonal Cutting Pliers [PM-925] - $31.77 : Pro'sKit

But I also use a pair of hardware-store Stanley 8" diagonal...

[jrfrond]

Do yourself a favor and stay away from Winged-C power tubes. QC is very spotty, and this just doesn't seem to be "their time" at the moment. The...

[jrfrond]

Be careful of the nomenclature here. While I DO agree that JJ's are the hardiest of new production EL34's, there IS a difference between the JJ EL34 and E34L....

[jrfrond]

I can honestly say that the EH 7591A just SUCKS in terms of tone and response as compared to the originals. "Lifeless" is the best way to put it....

[jrfrond]

They limit screen grid current, and also lower the voltage potential of the screen grid a bit. They also, to a small degree, affect power output.
...

[jrfrond]

They are readily-available from CE Distribution. Their part# is: P-H35-242. It's an Alpha switch, so Mouser MIGHT have it, but I've never cross-referenced...

[jrfrond]

I've been using more of the Bourns pots of late for guitars, amps and other uses. Excellent stuff! Yeah, they make the Gibson 300K pots and everything else...

[jrfrond]

Anyone have these? Please let me know. Also posted this on PASTEG. Seems to be unobtainium. Even Soundtech disavows it.