Hi all,
When the wife leaves town for a few days, progress can be achieved almost without interruption: A few pics:
http://www.lagunatechnics.com/images/tubeaudio/chassis_01.jpg
http://www.lagunatechnics.com/images/tubeaudio/chassis_02.jpg
http://www.lagunatechnics.com/images/tubeaudio/chassis_03.jpg
http://www.lagunatechnics.com/images/tubeaudio/chassis_04.jpg
I do have a couple of questions:
1. Current limiters. I always assumed something like a CL-90 2A would be placed behind the on/off switch in series with the primary PT winding.
I recently read a post on another forum where someone said:
"To slow things down a little, insert a NTC inrush current limiting thermistor from GE/Thermometrics between the rectifier and the PSU filter."
Does anyone have any advice about this? Also, does the CL-90 2A sound like a reasonable value for a dual Mark III powered by a single toroid?
2. Grounding. Please check me on this. The green wire from the AC line supply will be bolted to the aluminum chassis plate. The same bolt will connect to the B- (Chassis Ground) on both SDS Cap boards. The same bolt will connect to a ground bus that radiates to maybe six star points, all interconnected via heavy gauge solid copper wire (maybe #12).
I know it sounds a bit complicated, but the whole wiring scheme looks a bit to complex to use a single star ground. Ideas, critique, laugther?
Seriously, I'll start soldering soon. Any review/suggestions at this time would be very, very welcome.
Cheers,
Chris