Greetings everyone,
First, I have learned so much from this forum and thank all of you for your posts.
I have just completed a conversion form stock LTD to a Mojo T point to point using the stock trannies. I have a 5U4 for the rectifier and Tung sol 5881s for output tubes all the pres. are all 12ax7. I have sound and can play through the amp, however, I do not have any tone control functionality and the amp is gutless flubby and the volume knobs only increase gain and not do much volume. I have double and triple checked the wiring. Please help!
Voltages are, (Heaters are all good so I left them out)
5U4
3-9 358 Vac
2-8 461-446 dc resprctively
V5
3 445
4 460
5 -53
6 444
V4
3 444
4 460
5 -53
6 443
V3 (these look odd to me)
1 407
2 1
3 6
6 408
7 1
8 6
V2
1 195
2 0
3 1
6 354
7 195
8 192
V1
1 235
2 0
3 1.97
6 236
7 0
8 1.97
59 Bassman LTP PTP Conversion Low output
Moderator: VelvetGeorge
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- New Member
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- New Member
- Posts: 2
- Joined: Fri Jun 27, 2014 7:03 pm
- Just the numbers in order: 13492
Re: 59 Bassman LTP PTP Conversion Low output
Turns out that a 47k resistor on the PI cathode will cause this behavior. Just in case anyone is looking for this type of thing Amp works Awesome now!
Here is a gut shot for anyone who is interested.
Here is a gut shot for anyone who is interested.