Search found 152 matches
- Mon Jan 16, 2017 9:41 am
- Forum: Dumble Discussion
- Topic: Lowest price Dumble clones in Europe?
- Replies: 75
- Views: 10197
Re: Lowest price Dumble clones in Europe?
I have the skyliner tonestack in my #102 while the tonestack in the SSS #002 is classic. I like both.
- Mon Jan 16, 2017 9:26 am
- Forum: Dumble Discussion
- Topic: Lowest price Dumble clones in Europe?
- Replies: 75
- Views: 10197
Re: Lowest price Dumble clones in Europe?
Had to look at the data sheet:
1st secondary is:
345-290-60-0-290-345 VAC@200mA
- Mon Jan 16, 2017 8:05 am
- Forum: Dumble Discussion
- Topic: Lowest price Dumble clones in Europe?
- Replies: 75
- Views: 10197
Re: Lowest price Dumble clones in Europe?
I ordered a PT for a 50W D-style project from Poland last week.
Secondaries were:
345-0-345 VAC @200mA,
3.15-0-3.15 VAC @6A
5VAC @3A
12VAC @50mA
for only 74 €!
Is yours in that range?
Lars
Secondaries were:
345-0-345 VAC @200mA,
3.15-0-3.15 VAC @6A
5VAC @3A
12VAC @50mA
for only 74 €!
Is yours in that range?
Lars
- Sun Jan 15, 2017 7:37 pm
- Forum: Dumble Discussion
- Topic: Lowest price Dumble clones in Europe?
- Replies: 75
- Views: 10197
Re: Lowest price Dumble clones in Europe?
Metalguy,
looks good. Please tell us something about the power transformer. Transformers are always the most expensive parts here in Europe. For the OT you went with hammond obviously.
Lars
looks good. Please tell us something about the power transformer. Transformers are always the most expensive parts here in Europe. For the OT you went with hammond obviously.
Lars
- Sat Jan 14, 2017 4:06 pm
- Forum: Dumble Discussion
- Topic: SSS#002 low voltage in original drawing
- Replies: 39
- Views: 6130
Re: SSS#002 low voltage in original drawing
Hello guys, Update. The amp is running. Sounds good exept for 2 problems: Reverb: Almost no reverb with send and return pot turned fully up. If I hit the tank I can hear the typical noise quite loud. So it seems that the output transducer and recovery gain stage is working, but somehow the send circ...
- Fri Jan 13, 2017 4:30 pm
- Forum: Dumble Discussion
- Topic: #124 started
- Replies: 262
- Views: 18913
Re: #124 started
This is simply ohm´s law. B+5 =354VDC With a 150k resistor to ground the current running through this resistor is: 354/150000 (I=V/R) = 2.36 mA If you omitted the resistor totally minus 2.36mA current would pass every resistor in the string. With less current running through a resistor you will have...
- Fri Jan 13, 2017 11:59 am
- Forum: Dumble Discussion
- Topic: #124 started
- Replies: 262
- Views: 18913
Re: #124 started
Maybe this ?
They say it´s original Fender. Not expensive.
For black vox there´s another supplier in Europe. Cheaper than Banzai.
They say it´s original Fender. Not expensive.
For black vox there´s another supplier in Europe. Cheaper than Banzai.
- Thu Jan 12, 2017 3:15 pm
- Forum: Dumble Discussion
- Topic: #124 started
- Replies: 262
- Views: 18913
Re: #124 started
I suppose you have a 150k resistor instead of the FET circuit. You can lift up the voltages in the string by changing the value of that resistor.
- Thu Jan 12, 2017 3:09 pm
- Forum: Dumble Discussion
- Topic: #124 started
- Replies: 262
- Views: 18913
Re: #124 started
Adjusting the dropping string will of course have no effect on the power tube plate voltages. What is the secondary voltage (HT) of the PT ?
- Thu Jan 12, 2017 2:56 pm
- Forum: Dumble Discussion
- Topic: #124 started
- Replies: 262
- Views: 18913
Re: #124 started
Yes, cool.
Stand by "on", otherwise there is no voltage on the plates.
Stand by "on", otherwise there is no voltage on the plates.
- Thu Jan 12, 2017 2:48 pm
- Forum: Dumble Discussion
- Topic: #124 started
- Replies: 262
- Views: 18913
Re: #124 started
Does grounding here kill the hum ?
edit: Ok, fine.
edit: Ok, fine.
- Thu Jan 12, 2017 1:28 pm
- Forum: Dumble Discussion
- Topic: #124 started
- Replies: 262
- Views: 18913
Re: #124 started
Please measure the voltages of V3 again.
Especially in the network (4 resistors) and between the 24k and 390R.
Ground from the junction 0,1uF/390R/24k/ (4k7 if the nFB is connected) - kind of "bypassing" the presence/NFB circuit. Is that altering the hum ?
Lars
Especially in the network (4 resistors) and between the 24k and 390R.
Ground from the junction 0,1uF/390R/24k/ (4k7 if the nFB is connected) - kind of "bypassing" the presence/NFB circuit. Is that altering the hum ?
Lars
- Thu Jan 12, 2017 1:05 pm
- Forum: Dumble Discussion
- Topic: #124 started
- Replies: 262
- Views: 18913
Re: #124 started
...computers don´t have tubesthat was quick...job done..
- Thu Jan 12, 2017 12:22 pm
- Forum: Dumble Discussion
- Topic: #124 started
- Replies: 262
- Views: 18913
Re: #124 started
Just to clarify that we´re all looking at the same schematic.
- Thu Jan 12, 2017 12:12 pm
- Forum: Dumble Discussion
- Topic: #124 started
- Replies: 262
- Views: 18913
Re: #124 started
Martin,
I´m afraid at all of the points 1-7...
Marcus grounded the grid (pin7) of the PI.
Lars
I´m afraid at all of the points 1-7...
Marcus grounded the grid (pin7) of the PI.
Lars