RR--
Active Member
Hey everyone, I'm currently ordering parts to recap my trusty silver faced Sansui AU-4400.
There doesn't seem to be a lot of info out there for this little amp so I thought I'd make a start.
I already have most of the parts as I try and fill up my shopping cart to qualify for free shipping as well as spares from previous recaps.
So far I have most as Nichicon Gold Tune, Panasonic FC or Wima film caps.
I'll also be replacing the two 2SA726W transistors with KSA992FBU (BCE to ECB, transistor flipped) and the Bias trim pots with Bourns 1Kohms 10% 0.5Watts Square 3386P-1-102LF Trimmer Resistors.
I read somewhere it was recommended to upgrade the large 2200uf 63v filter cap with a 4700uf 63v.
Question:
Does anyone have any recommendations on what to replace the two large 1500uf 50v coupling capacitors with? I'm not sure whether a like for like replacement or upgrade is the best way to go.
Below is a list of the capacitors in the amp in case anyone else needs it.
AU4400 Cap List
Driver board
2200uf 63v
1500uf 50v
1500uf 50v
10uf 50v
.47uf 50v
47uf 50v
100uf 50v
33uf 50v
100uf 80v
47uf 80v
33uf 50v
10uf 50v
.47uf 50v
47uf 50v
100uf 50v
Control board
3.3uf 50v
1uf 50v
33uf 10v
1.5uf 50v
10uf 25v
33uf 10v
10uf 25v
1.5uf 50v
3.3uf 50v
220uf 50v
100uf 50v
100uf 50v
100uf 50v
47? 50v assumed 47uf
47? 50v assumed 47uf
1uf 50v
1uf 50v
10uf 25v
10uf 25v
100uf 6.3v
100uf 6.3v
There doesn't seem to be a lot of info out there for this little amp so I thought I'd make a start.
I already have most of the parts as I try and fill up my shopping cart to qualify for free shipping as well as spares from previous recaps.
So far I have most as Nichicon Gold Tune, Panasonic FC or Wima film caps.
I'll also be replacing the two 2SA726W transistors with KSA992FBU (BCE to ECB, transistor flipped) and the Bias trim pots with Bourns 1Kohms 10% 0.5Watts Square 3386P-1-102LF Trimmer Resistors.
I read somewhere it was recommended to upgrade the large 2200uf 63v filter cap with a 4700uf 63v.
Question:
Does anyone have any recommendations on what to replace the two large 1500uf 50v coupling capacitors with? I'm not sure whether a like for like replacement or upgrade is the best way to go.
Below is a list of the capacitors in the amp in case anyone else needs it.
AU4400 Cap List
Driver board
2200uf 63v
1500uf 50v
1500uf 50v
10uf 50v
.47uf 50v
47uf 50v
100uf 50v
33uf 50v
100uf 80v
47uf 80v
33uf 50v
10uf 50v
.47uf 50v
47uf 50v
100uf 50v
Control board
3.3uf 50v
1uf 50v
33uf 10v
1.5uf 50v
10uf 25v
33uf 10v
10uf 25v
1.5uf 50v
3.3uf 50v
220uf 50v
100uf 50v
100uf 50v
100uf 50v
47? 50v assumed 47uf
47? 50v assumed 47uf
1uf 50v
1uf 50v
10uf 25v
10uf 25v
100uf 6.3v
100uf 6.3v