As I think this is the thread to post my queries on improving my B4. Let me elaborate on what I've done so far so that you can help me. Forgive me for my questions not being so refined as those in debate so far.
http://i449.photobucket.com/albums/qq212/angartal/Imagen051.jpg
http://s449.photobucket.com/albums/qq212/angartal/
http://i449.photobucket.com/albums/qq212/angartal/Imagen052.jpg
1,. PSU. 50va toroid with 40va 12-0-12v or so devoted to B4 circuit + 10va 10v-0 to power the input selector relay circuit. I had it in my bits box.
Query -none except that I'd try an R-core in the future
1.2 Smoothing: Hacker generic rectifier board sporting 8100uf per rail (Gold Muse 2200uf x 4 boutique caps preceded by 2x 4700 ordinary Nichicon)with fast diodes and RC filtering with only R47 resistor value
query: Shall I up the resistor value? I have no scope to analyse the supply.
2.-Input selector kit. Bought from ebay shop -can't remember who from.
Good Matsusita silver plated contact relays; but all signal coming in
share mono ground which I then split in two stereo wires and then go star grounded in the B4 Pink Fish approved circuit board.
query Shall I discard this kit because of this grounding trick? Any suggestions?
3.- B4 board stuff: Bom as per PINKFISH. Input cap 3.3 WIMA. output cap 2.2uf policarbonate film EVOX from a charity auction run by Les.
Polysterenes are COPPER POLYSTERENES from Tubeshunter as well as the J501 diodes
Vol pot- NOS 20K Noble new
Query Are Polypropilenes to be prefered at the output? Are these polysterenes the right stuff?
Here you food for thought/debate
Cheers
harthold
http://i449.photobucket.com/albums/qq212/angartal/Imagen051.jpg
http://s449.photobucket.com/albums/qq212/angartal/
http://i449.photobucket.com/albums/qq212/angartal/Imagen052.jpg
1,. PSU. 50va toroid with 40va 12-0-12v or so devoted to B4 circuit + 10va 10v-0 to power the input selector relay circuit. I had it in my bits box.
Query -none except that I'd try an R-core in the future
1.2 Smoothing: Hacker generic rectifier board sporting 8100uf per rail (Gold Muse 2200uf x 4 boutique caps preceded by 2x 4700 ordinary Nichicon)with fast diodes and RC filtering with only R47 resistor value
query: Shall I up the resistor value? I have no scope to analyse the supply.
2.-Input selector kit. Bought from ebay shop -can't remember who from.
Good Matsusita silver plated contact relays; but all signal coming in
share mono ground which I then split in two stereo wires and then go star grounded in the B4 Pink Fish approved circuit board.
query Shall I discard this kit because of this grounding trick? Any suggestions?
3.- B4 board stuff: Bom as per PINKFISH. Input cap 3.3 WIMA. output cap 2.2uf policarbonate film EVOX from a charity auction run by Les.
Polysterenes are COPPER POLYSTERENES from Tubeshunter as well as the J501 diodes
Vol pot- NOS 20K Noble new
Query Are Polypropilenes to be prefered at the output? Are these polysterenes the right stuff?
Here you food for thought/debate
Cheers
harthold