hi
i m wanted to start building a tube compressor for my bass guitar , i found a compressor schematic with two ecc83 , but it seems it s too old ,and i confused bout the pin connection in first tube , it seems somebody draw it after the original schematic , can anybody tell me , are pin2 and pin1 directly connected to together on first tube ? ( i shown it with a red line around it )
sorry i didn t remember the original link of schematic and the image has no info or copyright on it so i attached the photo ,...
--any idea for another compressor ? any mods ?
i m wanted to start building a tube compressor for my bass guitar , i found a compressor schematic with two ecc83 , but it seems it s too old ,and i confused bout the pin connection in first tube , it seems somebody draw it after the original schematic , can anybody tell me , are pin2 and pin1 directly connected to together on first tube ? ( i shown it with a red line around it )
sorry i didn t remember the original link of schematic and the image has no info or copyright on it so i attached the photo ,...
--any idea for another compressor ? any mods ?
Attachments
thnx for link Claus , they were wat i m exactly lookin for , very great projects , but ! i should forget bout finding components here 🙁 ,,, specialy input / output transformers ... wish i could build them all ! lol
better stick with the one i posted ..
better stick with the one i posted ..
Ahmad_tbp said:
Yes, they are joined together - the first stage is an AC triode amplifier, the second is strapped as a diode to rectify the signal level. The DC output from this rectifier is fed to the next triode as a DC amplifier, the DC output from that is used to bias the final triode, which is used as a variable resistor - making a variable attenuator in conjunction with the 470K.
thnx Nigel 😉
sorry i m so new in tubes and almost know nothin bout them ,
so i can use it befor preamp with no problem yeah ?
sorry i m so new in tubes and almost know nothin bout them ,
so i can use it befor preamp with no problem yeah ?
Ahmad_tbp said:
Assuming the preamp has a high input impedance?, designed for a passive bass - obviously it's designed to feed a valve preamp, but a high impedance solid state one will be fine.
Don't know how well it will work?, and personally I don't see the point in doing it using valves - and it's somewhat cruder than solid state ones (for example only using a half wave rectifier).
My daughters a bass player, solid state all the way! - I don't see any advantage with valves for bass?.
Here, use this:
http://geek.scorpiorising.ca/MicPreamp.html
For guitar/bass, change the input resistor to 470K or so.
I'm a bassist and it works just fine 🙂
http://geek.scorpiorising.ca/MicPreamp.html
For guitar/bass, change the input resistor to 470K or so.
I'm a bassist and it works just fine 🙂
hi ,
here s the preamp i m goin to use after it ( ampeg v3 preamp ) :
http://www.drtube.com/schematics/ampeg/v3pre-jp.gif
to Nigel Goodwin : infact most bassists are into solid state cuz they need lotsa power , but wat can ever compare with the warm and alive sound of a tube ? and cuz of that most amps are usin valves for pre and solid state for power , i prefer all tube my self 😉
i built and tried several diffrent solid comb but none of them was satisfy me , so it s time to try a valve comp...
and thnx geek for link at sure i ll try the comp section if i find ic here 😉
here s the preamp i m goin to use after it ( ampeg v3 preamp ) :
http://www.drtube.com/schematics/ampeg/v3pre-jp.gif
to Nigel Goodwin : infact most bassists are into solid state cuz they need lotsa power , but wat can ever compare with the warm and alive sound of a tube ? and cuz of that most amps are usin valves for pre and solid state for power , i prefer all tube my self 😉
i built and tried several diffrent solid comb but none of them was satisfy me , so it s time to try a valve comp...
and thnx geek for link at sure i ll try the comp section if i find ic here 😉
If I could suggest something- go for LED-photoresistor compression. It has rather long time constant, which is very good for agressive bass line, has good attack and mild compression. As simple as it gets- amplifiaction control goes from a rectifier and feed the LED, and a LED modulates resistance of photoresistor in voltage divider or op-amp circuit.
I've heard it some whare before, what's that?
Ahmad_tbp said:
You're welcome!
If you can find an IC, I have PCB's available for the compressor circuit 🙂
i saw a circuit for that somewhere but never try it before , but i will ,
the compression is so important for bass ,so i ll try and try to find what i m lookin for ! lol
yeaaaaaaaaaaaaaaaahhhhh death , Chuck Schuldiner R.I.P , Sure u know him yeah ?
this band is like a god for me , i really like him , a true face for metal music , here s my another favor quote from Chuck : beware of the sharp edged weapon , called human being !!
RIP Chuck .... :|
thnx geek but it s impossible for me to buy anything from here 😉 lemme see if i can find the ic , converting the schematic to pcb layout is not that hard for me 😉 thnx
Ahmad_tbp said:
Depends if you like a clean sound, or the frequency limited and distorted sound from a valve amp?. Personally, for bass, I prefer a clean sound - if you want distortion occasionally add an effects pedal?.
Probably one of the biggest valve advantages is the volume from them?, distorted sound is far louder than clean sound - to compete a transistor amp needs 3-4 times the power!. You can't clip a transistor output stage, it sounds absolutely horrible, but it's standard practice with a valve amp, resulting in a much louder sound.
yeah most of bassists think bout valves when they need a distorted sound , but i need absolutly clean sound and still stick with tubes ! lol , i never heard a clean solid state sound that can compare with the clean sound of a tube , but as u said it all depends on taste ,,, i m playin deathmetal , and most deathmetal players like distorted sound for bass , but i m not 😉 that s why i m lookin for a comp/limiter 😉
Geek said:
What do you think the characteristics of a valve amp are?, poor frequency response and high distortion (mostly even harmonic), presumably that's what you like about them?.
??? i think it s diffrent from wat we here from tubes .. why ?
and so , can i use this comp/limiter after preamp ???
Ahmad_tbp said:
No, that's the sound people are looking for from valves, the 'warm' sound people like is basically frequency limitation and distortion.
Bear in mind, we're not talking about objectionable distortion, even harmonic distortion is fairly 'musical' - even when over driving valve amps and probably running at 100% distortion.
I presume so, but you need a power amplifier with a high impedance input to feed it to - or an active DI box before the power amp should work as well.
- Status
- Not open for further replies.