12-09-2017, 01:39 PM
Yes, the bass circuit may be working but something is not right. It sounds terrible. The only way I can describe it is that it sounds like the diaphragm is torn, which it is not. You get that very distorted rattling sound at higher bass levels. From mid-range frequencies on up, it's very clean. But like I said, overall volume level is low. And one thing that was confusing me is that the bass control increases bass CW. The treble decreases CW.
So I checked the woofer VC at the ouput trans (with it still connected) and I'm getting maybe 1 ohm. I'm not finding VC resistance on the schematic. Also my muli-meter is starting to act flaky at near zero. I know the VC may only be a few ohms but I'll check again. Any chance it's shorted? I didn't think it would work at all. The output trans resistance is right on (checking at the connector side).
And just for the heck of it I pulled the 6J5 and tested it again. It checks fine on my tester. It's been replaced with a GT.
So I checked the woofer VC at the ouput trans (with it still connected) and I'm getting maybe 1 ohm. I'm not finding VC resistance on the schematic. Also my muli-meter is starting to act flaky at near zero. I know the VC may only be a few ohms but I'll check again. Any chance it's shorted? I didn't think it would work at all. The output trans resistance is right on (checking at the connector side).
And just for the heck of it I pulled the 6J5 and tested it again. It checks fine on my tester. It's been replaced with a GT.
