GReg-Electrical Tech Journal

GReg-Electrical Tech Journal

441 by steve_Archive

Yeah, the Space Echo. That thing sucked.

We need to get an Echoplex though. Those are cool.

Get on that Greg. We need an Echoplex.

steve albini
Electrical Audio
sa at electrical dot com
Quicumque quattuor feles possidet insanus est.

greg_Archive

GReg-Electrical Tech Journal

442 by greg_Archive

[color=red]AKG D112 quiet and buzzy.[/color]

[color=green]Sent to AKG for repair. "Coil on plus side of output capsule broken- replaced capsule" $175 with shipping. Not bad. [/color]

Greg Norman FG

greg_Archive

GReg-Electrical Tech Journal

443 by greg_Archive

Replaced crosstalk cap on Studer 820 24-track headblock. Old cap value supposed to be 220uF, measured 3.3uF.

Greg Norman FG

greg_Archive

GReg-Electrical Tech Journal

444 by greg_Archive

SVT Classic (reissue) made a squeal and loss power. The clever biasing led indicator circuit showed a fault with the tubes on one half of the push-pull. I swapped the set of tubes to see if the problem followed the tubes, and it didn't.
There was a burned out resistor (R11) on the printed 6550 circuit board. This was a resistor going from one of the grids to +345VDC. Replaced resistor, 6550 tubes (all 6 matched), then cleaned all the loop and board connections, biased the amp- works now. That sucker was heavy, and a bitch to get into.

Greg Norman FG