Moderator: kabubi
brainf wrote:A pleasure collaborating with you on this project Doc! It's one-of-a-kind and done in the true spirit of DIY.
tony wrote: congrats brainf, you have really come a long way......keep on truckin'........
D1 is a generic 1N914 type diode, and D2 is a generic LED for indicating power the board. All of the transistors are N channel JFETs. The stock parts are 2SK170's, LSK170's or 2SK370's, and you can use substitutes having Idss between than 5 and 10 milli-Amps and transconductance numbers from 5 to 30 milli-Siemens.
endrik35 wrote:Here's a couple of links which might interest you. Just connected this B1 pre-amp to the Onkyo M-506. It just gets out of the way of music. Precisely what a passive buffer's job should be!
Link:
http://www.passdiy.com/
http://www.firstwatt.com/
endrik35 wrote:You are right on the money Tony. I'm doing some critical listening right now on the B1 pre-amp and the sound is tubey sans the hum and distortion asscociated with tubes. Add the low maintainance of Jfets, this pre-amp is definitely for keeps in my system. You really don't have to spend a lot of money to get the sound that you like!
hypertriode wrote:endrik35 wrote:Here's a couple of links which might interest you. Just connected this B1 pre-amp to the Onkyo M-506. It just gets out of the way of music. Precisely what a passive buffer's job should be!
Link:
http://www.passdiy.com/
http://www.firstwatt.com/
Thanks Doc! Really interesting projects ...
Congrats to you & brainf!
tony wrote:today's circuits revolve around topology.....unlike vintage ones that used conventional topologies......
thus we see the Aikido which uses the tubes's nolinearities to make a linear amp, Broskie' finaly found a way to develop a circuit that is not tube dependent, just like solid state designers have done the past 30 years or so....
the Broskie aikido cathode follower is the tube counterpart of this Nelson Pass's Buffer circuit....they work exactly the same way....
the jfet is one that has very simmilar characteristic as a triode tube....
endrik35 wrote:Found and borrowed this DIY acrylic B1 casing pic from the net. Nice! Wanna build one for me and Leslie's next project. . . B2 and B3
JoeyGS wrote:Hi Endrik and Leslie,
Congrats. I heard that B1 really sounds tubey
Would you mind telling us what parts were used?
Regards,
JoeyGS
Users browsing this forum: No registered users and 4 guests