first thing I would do is halving the capacitances C1, C2, C3, C5 and check if the sound goes in the right direction.
Then playing around with different combinations.
Could you please share the supply voltages A, B, C, D ?
Search found 65 matches
- Sun May 05, 2024 7:55 am
- Forum: Technical Discussion
- Topic: HILGEN BASSO 2501 Bass Amp Help Needed....
- Replies: 5
- Views: 136
- Thu Apr 25, 2024 3:12 pm
- Forum: Technical Discussion
- Topic: Does anyone recognize this amp design?
- Replies: 10
- Views: 583
Re: Does anyone recognize this amp design?
I would say its a homebrew, with some later modifications maybe from the seventies if I look at the components.
- Thu Mar 28, 2024 3:23 pm
- Forum: Technical Discussion
- Topic: Thick film power supply dropping resistor?
- Replies: 6
- Views: 606
Re: Thick film power supply dropping resistor?
From a electrical point of view, the resistor is ok, but it's like throwing caviar into a pig trough. As long as you make sure that the power specification is not exceeded (pay attention to the derating per ambient temperature) you can use any resistor. But the smaller the design, the higher the sur...
- Sun Mar 24, 2024 3:03 pm
- Forum: Speakers and Cabinets
- Topic: Cabinet made of OSB instead of pine
- Replies: 13
- Views: 857
- Fri Mar 22, 2024 5:12 pm
- Forum: Technical Discussion
- Topic: Flash seen from bottom of 12AT7 PI socket
- Replies: 22
- Views: 977
Re: Flash seen from bottom of 12AT7 PI socket
Because of the flash I power up my amps through a current limiter on the primary side, between the wall socket and the amplifier power cord. That also helps the input fuse and the input rectifiers and powers up everything including the anode voltages in a smooth manner… I don‘t know if all values of...
- Thu Mar 21, 2024 4:36 pm
- Forum: Speakers and Cabinets
- Topic: Cabinet made of OSB instead of pine
- Replies: 13
- Views: 857
Re: Cabinet made of OSB instead of pine
thank you all for your thoughts.
I think I will not use OSB, the possible desintegration because of use/vibration really seems to be an issue…
I think I will not use OSB, the possible desintegration because of use/vibration really seems to be an issue…
- Wed Mar 20, 2024 4:21 pm
- Forum: Speakers and Cabinets
- Topic: Cabinet made of OSB instead of pine
- Replies: 13
- Views: 857
Re: Cabinet made of OSB instead of pine
I planned to use 18mm thick.
the joints are glued and screwed together with a triangular strip inside as reinforcement
the joints are glued and screwed together with a triangular strip inside as reinforcement
- Wed Mar 20, 2024 11:36 am
- Forum: Speakers and Cabinets
- Topic: Cabinet made of OSB instead of pine
- Replies: 13
- Views: 857
Cabinet made of OSB instead of pine
I would like to build a Fender Bassman cabinet with 4 x 10" speakers. Keep to the original dimensions, but would prefer to use OSB boards (Beaver puke) instead of pine. (these very coarse chipboards e.g. https://www.obi.de/p/5799762/osb-3-verlegeplatte-22-mm-mit-nut-und-feder-205-cm-x-62-5-cm ) Does...
- Mon Mar 18, 2024 5:03 pm
- Forum: Garage Talk
- Topic: What's for supper?
- Replies: 70
- Views: 3932
Re: What's for supper?
Guys, I miss the salt- and fat-free steamed vegetables and tofu in your daily diet
- Wed Mar 13, 2024 4:03 pm
- Forum: Dumble Discussion
- Topic: #002 Steel String Singer - almost there
- Replies: 69
- Views: 2400
Re: #002 Steel String Singer - almost there
look at reichelt.de… they offer some in TO-92 package, real cheap enough to try some of them if they suit your taste…
Search for „jfet“ on their site, than narrow down to „N“ type
Search for „jfet“ on their site, than narrow down to „N“ type
- Mon Mar 11, 2024 6:12 pm
- Forum: Dumble Discussion
- Topic: #002 Steel String Singer - almost there
- Replies: 69
- Views: 2400
Re: #002 Steel String Singer - almost there
a cheap way to protect the OT against secondary open condition is a MOV (metal oxyd varistor) just solder it directly over one of the output windings. and what about this simplicity, R=47R 5W permanently soldered to the output jack? :P you lose always power...and heat the atmosphere :mrgreen: the M...
- Sun Mar 10, 2024 2:44 pm
- Forum: Dumble Discussion
- Topic: #002 Steel String Singer - almost there
- Replies: 69
- Views: 2400
Re: #002 Steel String Singer - almost there
a cheap way to protect the OT against secondary open condition is a MOV (metal oxyd varistor) just solder it directly over one of the output windings. The rated voltage approx. 2x the highest expected output voltage. They look like a disk with about 15…20mm diameter. The good thing with this MOVs: w...
- Sat Mar 09, 2024 11:23 am
- Forum: Dumble Discussion
- Topic: #002 Steel String Singer - almost there
- Replies: 69
- Views: 2400
Re: #002 Steel String Singer - almost there
beautiful, thanks for sharing !
Aus welcher Ecke in Deutschland kommste ?
Aus welcher Ecke in Deutschland kommste ?
- Fri Mar 01, 2024 9:05 am
- Forum: Garage Talk
- Topic: I'm jumping ship.
- Replies: 7
- Views: 637
Re: I'm jumping ship.
Well, modern times have now left their mark here too... For me, these digital amplifiers are like a vegan soy schnitzel, somehow reasonable but also not the real thing... Professionally I am also on the silicon and processor side, for me the tube amplifiers (which are actually the opposite of reason...
- Thu Feb 29, 2024 8:55 pm
- Forum: Technical Discussion
- Topic: What do you believe regarding the sound of passive components?
- Replies: 185
- Views: 4816
Re: What do you believe regarding the sound of passive components?
in that cases a class 1 ceramic is the right choice. (if you don’t want that distortion) They do not have this large voltage dependency on capacitance. I‘m pretty sure that the picture shows not a class 1 ceramic cap. If you want to compare film cap with ceramic cap for audible application, it shoul...