In respect of Wayne, Nelson and PASSDIY's intellectual property will sell the boards at cost and post the Gerbers and BOM here. Wayne and Nelson have contributed so much to our enjoyment of sound I think that's fitting!
I want to validate it first, however.
Almost all the passive parts are 0805, save for some of the caps which SYN08 had recommended -- these are acrylic and a bit larger and more expensive.
Output stage works like a champ! +40dB on the nose. Comparing the SPICE models for the through hole and surface mount output MOS are identical.
The passive RIAA network -- will need careful selection of components as it's time consuming tweaking SMD. I might even go for through-hole components.
I used a 270 degree SMD trimpot, this will have to be changed out to a multi-turn trimpot.
The passive RIAA network -- will need careful selection of components as it's time consuming tweaking SMD. I might even go for through-hole components.
I used a 270 degree SMD trimpot, this will have to be changed out to a multi-turn trimpot.
What kind of IDSS matching did you get between the LSK389 SOIC8 devices from NAC?
Last edited:
If memory serves correctly, the 170s which I got from the with the boards were within 1mA Idss. On the board I am playing with, the Idss are a bit tighter than this, Vgs fsior the
Of course, I have two boards in mind, one with the LSK389B and the other with the LSK710B. You can buy a tube of LSK170B if you like.
The point of the exercise is to use a board which minimizes mains pickup and retains the great qualities of the PASS design and put it in the public domain.
Of course, I have two boards in mind, one with the LSK389B and the other with the LSK710B. You can buy a tube of LSK170B if you like.
The point of the exercise is to use a board which minimizes mains pickup and retains the great qualities of the PASS design and put it in the public domain.
