Post photos here as well, would love to see it!!
6L6:
I posted a quick write-up on the Pass pictures thread, but here are those photos.
Regards to all,
Scott
Attachments
Hello Mr. Pass,
like H2 M2x, I´ve designed the ACP+ compatible M2x, so I´m asking for your permission to offer, if builders interested, this board in a future GB.
If interest to low I´ll put all the manufacturing datas online so everybody could order PCB´s and built himself this excellent circuit.
JP
like H2 M2x, I´ve designed the ACP+ compatible M2x, so I´m asking for your permission to offer, if builders interested, this board in a future GB.
If interest to low I´ll put all the manufacturing datas online so everybody could order PCB´s and built himself this excellent circuit.
JP
Attachments
max rail voltage
Apologies if I have missed this...
What is the acceptable range of rail voltage and is there any benefit in operating at high voltage than the 24 proposed?
thanks
Beardy
Apologies if I have missed this...
What is the acceptable range of rail voltage and is there any benefit in operating at high voltage than the 24 proposed?
thanks
Beardy
Since ACP+ is designed to drive 32 ohm headphones, while M2x presents an impedance of about 600 ohms which the daughter card must drive, I think you can safely reduce the output capacitor (C112) without affecting the low frequency response of the amplifier as a whole.
Also have you checked and double-checked your schematic for errors? (the one in post #226) ... I can't quite put my finger on it, but somehow, something just doesn't look right. The original by Nelson Pass is HERE.
Sorry to nudge...Question max rail voltage
Apologies if I have missed this...
What is the acceptable range of rail voltage and is there any benefit in operating at high voltage than the 24 proposed?
thanks
Beardy
Apologies if I have missed this...
What is the acceptable range of rail voltage and is there any benefit in operating at high voltage than the 24 proposed?
thanks
Beardy
You could probably go a few volts more with no ill effect, but it wouldn’t gain you much except heat.
Would love to build this but I want easy to source components. Is there an equivalent drop in replacement for the 2SJ74 and LSJ74?
When I look at the price of Vacuum Tube's , JFETs look inexpensive . I am looking at a matched quad of LSK170 / LSJ74 at the Diystore for $39 . Yes compared to what they cost years ago they are expensive now. Thanks to Linear Systems and the Diy Store , we can build those wonderful Nelson Pass designs. It's a great time to be a DIYer.🙂