Dear Quanghao,
I have received today the 2 sets of PCB. They are excellent quality. Thank you.
Victor
Hi !
I'm happy . You got my pcb
Thanks
Quanghao, do you have a drilling template for both boards please?
It is no hot
Quanghao,
The parts list is missing D5. What is diode D5?? specs??
Alex
D5= 1n4007 . thanks
Is it okay to use the 6N23p at 2,3mA/triod because on one side the trimpot reaches it´s endpoint and I can´t get any higher...
no, tube input need low current for best sound.
thanks
2.3mA _is_ low isn't it? I have 12AU7 input tubes with 220V B+ and 47k anode resistors. By my calculations 110V across 47k gives me 2.3mA. Sounds good to me!
No low . 2 to 3ma . That is good sound .
You can go up max + 235 or 240 v.
Thanks
So the anode resistors (R1 and R2) should be 470k then, rather than the 47k specified?
47k . Thanks
The DAC is playing (AK4490) allthow the gain is a little to high...
But I must ask again the delay for the relay is waaay to long.....How long is it for you other that have built this?
Hi!
C9 late on duty close to the relay, avoiding audible speaker.
Closing time lag depends on the capacitor C9.
470uF: closing delay of about $ 30.
680uF: closing delay of about $ 45.
very good time for most of the pre tube.
thank you
Attachments
Hi! Quanghao,
still have 1 x HQ-IV+ 2 x No.Shunt HV ?
Can I pair this HQ-IV with Buffalo IIIse?
yes, i only have only PCB for it
1 x HQ iv Ok
2 x no shunt ok
thanks
quanghao
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