0.82 ohms are very low. Did you experiment with higher value?
I like the way you connect the bipolar and jfet. Did you experience stability problems ?
I like the way you connect the bipolar and jfet. Did you experience stability problems ?
Yes I did, but I perceived better sound by putting lower and lower I/V resistors. I had to stay at 0.81ohm value because there is no much gain in the circuit.
I have not find any stability problems until now.
Very nice, I have a idea that uses that kind of connection but without the jfets , with only transistors, have you try using bjt in the place of jfets ? I get less distortion using bjt.
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I have see this type of connection in Cordell book page 530. He call it jfet-bipolar CFPs.
Jochim this can be a good idea for you to try in your new MC amplifier. It has very low distortion and low impedance. I prefer with only bjt.
Jochim this can be a good idea for you to try in your new MC amplifier. It has very low distortion and low impedance. I prefer with only bjt.
It is very similar to the JLH buffer but used as a transimpedance stage. The JLH is parallel symmetric tough. I made several improvements to it and it sounds very good. As low impedance MC input i prefer BJT though, especially since your circuit has no problem with input offset.
Ween I get the opportunity I will send to you my idea. But now I am limited to my phone internet , and to my language limitation (English )
I have recently discover that you are a genius in building loudspeakers. And I have some question to ask you, but that have to be in other place and another time.
I have two loudspeaker threads here too. MPL and ZDL. Maybe it fits there. Yes, i only designed speakers for a long time and many did not know that i can design electronics too, so for most the experience was the other way around.
Here is some more information about the JLH Lineac :A Paul Kemble web page - John Linsley Hood preamp designs.
No, it isn't. It was just for simulation. The only load seen by the I/V stage is the 22k volume attenuator located into the power amplifier.
Guys, as far as I listened, this is the best sounding I/V stage I have tested. And i had listened many.
It is very simple to construct, just be sure that jfets are sorted to the same Idss in every similar symmetrically position
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Wich Idss for 170s & for 117s? Sorry my ignorance inputs are V2 & V3, right? Is powered only with +15VDC?
I also think that a simple but good circuit has the potential to sound very good. Is now post 18 the favorite ?
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