😀 that's what I was thinking, but sometimes they add some other functionality as well... I don't know this board.
Haha! No, I don't want an integrated amp 🙂 And yes, it's the softstart from Sjostrom. Nice stuff he has! The PSU is also Sjostrom. It was handy so I use the softstart module as low power switch module for the nice on/off button. It also drives the blue LED in the switch. A bit overkill, I know. But no extra cost 🙂 And since I have the same module in my Class A amp, the LED strength is exactly the same 🙂 Witch is nice.
well, times have changed a few things
maybe it really have become the better option
unless ofcourse if you have a turntable and need a riia/phono preamp
or maybe it's time to face that the preamp have been replaced by D/A converter
which ofcourse also needs buffers etc
Remember to make the cables from the regulator board to the B1 as short as possible for best performance. Inductance of long cabling its no good at all for regulation.
What is the purpose of the smallest board placed between the softstart and the switch?
What is the purpose of the smallest board placed between the softstart and the switch?
Smallest board
Hi regiregi22,
The power cable from the PSU to the B1 is only 8cm long.
That small pcb is just a tiny power supply for the input switch unit. It needs 12 to 15VDC and the big PSU is 22 VDC. So I needed a small one(Velleman) to reduce power from 22VDC to 15VDC.
Hi regiregi22,
The power cable from the PSU to the B1 is only 8cm long.
That small pcb is just a tiny power supply for the input switch unit. It needs 12 to 15VDC and the big PSU is 22 VDC. So I needed a small one(Velleman) to reduce power from 22VDC to 15VDC.
yet, all standard wall plug extern power supplies work that way
but for best performance, I guess you are right
The B1 will operate without a regulated supply.
It does not need a regulated supply.
It does need a low mains ripple supply.
Unregulated can give a low ripple supply.
That is what the standard B1 shows. An enormous filter capacitor for a tiny quiescent current.
It does not need a regulated supply.
It does need a low mains ripple supply.
Unregulated can give a low ripple supply.
That is what the standard B1 shows. An enormous filter capacitor for a tiny quiescent current.
Does it work without oscillating? I wouldn't dare to connect my MOSFETs with such long wires.
Hmm, then I must probably give up my fear!
I was thinking of extending the MOSFETs wires for my AlephJ with 7 cm, so I can place them optimal at the heatsinks I bought.
Walter
I was thinking of extending the MOSFETs wires for my AlephJ with 7 cm, so I can place them optimal at the heatsinks I bought.
Walter
Thanks, Jacco!
Pass Labs using flatcable....oooh, if Papa is using it, I can do it too 😉
Nice website, inspirational !
Pass Labs using flatcable....oooh, if Papa is using it, I can do it too 😉
Nice website, inspirational !
Sure it will be unnoticeable, but as best practice, better always to try to keep them as short as possible
This my ever first pass labs amplifier build . I am fully satisfied with sound ......