Hi , can anyone explain me why the driver Cf in SSS 002 has no coupling cap before 1.5K grid resistor?
sorry for the stupid question!
R.
Search found 345 matches
- Mon Aug 25, 2014 11:25 am
- Forum: Dumble Discussion
- Topic: CF question in SSS
- Replies: 1
- Views: 725
- Mon Aug 25, 2014 8:05 am
- Forum: Dumble Discussion
- Topic: PT for SSS
- Replies: 15
- Views: 2416
Re: PT for SSS
Dual professional and Twin Pro Tube use the same PT of the Tonemaster ( looks like bias voltage doubler in both amps model).
Fender Pro tube has 8 pre tubes and Tonemaster only 3 , wow...same PT!?!
Fender Pro tube has 8 pre tubes and Tonemaster only 3 , wow...same PT!?!
- Sun Aug 24, 2014 12:22 pm
- Forum: Dumble Discussion
- Topic: PT for SSS
- Replies: 15
- Views: 2416
Re: PT for SSS
I think 28V brown-brown is for bias voltage doubler circuit!
- Fri Aug 22, 2014 2:13 pm
- Forum: Dumble Discussion
- Topic: PT for SSS
- Replies: 15
- Views: 2416
Re: PT for SSS
...but I would build a #002 SSS
- Fri Aug 22, 2014 12:13 pm
- Forum: Dumble Discussion
- Topic: PT for SSS
- Replies: 15
- Views: 2416
Re: PT for SSS
100W !!!
- Fri Aug 22, 2014 8:20 am
- Forum: Dumble Discussion
- Topic: PT for SSS
- Replies: 15
- Views: 2416
Re: PT for SSS
I think I will run with twin reverb iron.
Thanks Smitty
Thanks Smitty
- Thu Aug 21, 2014 1:32 pm
- Forum: Dumble Discussion
- Topic: PT for SSS
- Replies: 15
- Views: 2416
PT for SSS
Does the Tonemaster PT handle current enought for SSS circuit? I found one with these characteristic: Thanks Primary: Thermal Fuse: white/white 0V RED 120V GREEN 0V YELLOW 100V VIOLET 110V BLUE 120V BLACK Secondary: 185V@600mA RED 0V GREEN/YELLOW 185V RED 28V@300mA BROWN 0V BROWN 6,3V@8A GREEN 0V GR...
- Mon Aug 18, 2014 1:01 pm
- Forum: Technical Discussion
- Topic: Ampeg SVT3 pro PT problem
- Replies: 3
- Views: 760
Re: Ampeg SVT3 pro PT problem
Hi Martin , I haven't a neon bulb to do that test ! I have tested the trafo out the amp with a fuse connected to the prim (sec. open). the fuse blows again! Also I tested the 2 primaries: between black-white 38.11uH 0.544Ohm between brown violet 19,92uH 0.205Ohm I tested also between black and viole...
- Sun Aug 17, 2014 7:36 pm
- Forum: Technical Discussion
- Topic: Ampeg SVT3 pro PT problem
- Replies: 3
- Views: 760
Ampeg SVT3 pro PT problem
Hello everyone,
a friend of mine brought me a Ampeg SVT 3 PRO, telling me when He turn on , the fuse blows.
In fact, the fuse blows even with the secondaries disconnected. could be the transformer fault?
Thanks
a friend of mine brought me a Ampeg SVT 3 PRO, telling me when He turn on , the fuse blows.
In fact, the fuse blows even with the secondaries disconnected. could be the transformer fault?
Thanks
- Sun Aug 17, 2014 6:21 pm
- Forum: Fender Discussion
- Topic: vibrato circuit
- Replies: 18
- Views: 3798
Re: vibrato circuit
Thanks all!!
- Sat Aug 16, 2014 3:02 pm
- Forum: Fender Discussion
- Topic: vibrato circuit
- Replies: 18
- Views: 3798
Re: vibrato circuit
thanks all for the input , I think to go with this:
- Fri Aug 15, 2014 8:27 pm
- Forum: Fender Discussion
- Topic: vibrato circuit
- Replies: 18
- Views: 3798
Re: vibrato circuit
Hi , I have one socket only in my chassis , I can use a double triode only!
6G16 vibroverb?
6G16 vibroverb?
- Fri Aug 15, 2014 12:53 pm
- Forum: Fender Discussion
- Topic: vibrato circuit
- Replies: 18
- Views: 3798
vibrato circuit
Hi , I want buid an amp with Vibrato circuit but I don't know what to use: opto or bias modulating type?.
What you suggest me?
There is a great differences between them?
Thanks
R.
What you suggest me?
There is a great differences between them?
Thanks
R.
- Wed Jun 25, 2014 2:58 pm
- Forum: Dumble Discussion
- Topic: 100hz noise problem
- Replies: 6
- Views: 1376
Re: 100hz noise problem
both Vol & MV are grounding to the Bus bar!
- Wed Jun 25, 2014 7:47 am
- Forum: Dumble Discussion
- Topic: 100hz noise problem
- Replies: 6
- Views: 1376
Re: 100hz noise problem
no , I changed the 500Pf cap with another one , but it's the same!
I changed the ground point from PS board also , but nothing!
I changed the ground point from PS board also , but nothing!