Caiman passive output mod revealed

[Ali Tait]

Just try it and see what happens.If you don't like the results it's easy to reverse.

[chrism]

Can anything like the passive output mod be added to parts of the variable circuit to gain some of the advantages. I use the Caiman as a preamp so unfortunately cannot go with the fixed outputs. I have done the wire mod and resistor already though.

Regards

Chris

[Ali Tait]

Resistor?

[chrism]

Best see the Caiman Mod thread for the resistor mod. Shame to repeat it here.

Regards

[Ali Tait]

I have a 7510,so don't know if it's relevant.

[leo]

I decided to make a test jig which just plugs in instead of the active audio board, I did it like this mainly as temporary to allow easy and quick swapping of the caps, it also goes through the onboard relay same as the active board

I also refitted the stock tans etc around the dac until I can get the smaller Silmic II's. the ones I fitted was a little big

The passive mod will have varying results depending on your kit mainly what the dac see's on the output, things like capacitive loads , long interconnects etc may influence things more than with the active audioboard Watch out for things like distortion or clipping.

The blue caps in the pic are Epcos polyester , the polypropylenes I tried first are just huge
I'm going to have a scrounge to see what others I have, the sound so far is smoother, less forward . Bass seems deeper

[Puffin]

I decided to make a test jig which just plugs in instead of the active audio board, I did it like this mainly as temporary to allow easy and quick swapping of the caps, it also goes through the onboard relay same as the active board

I also refitted the stock tans etc around the dac until I can get the smaller Silmic II's. the ones I fitted was a little big

The passive mod will have varying results depending on your kit mainly what the dac see's on the output, things like capacitive loads , long interconnects etc may influence things more than with the active audioboard Watch out for things like distortion or clipping.

The blue caps in the pic are Epcos polyester , the polypropylenes I tried first are just huge
I'm going to have a scrounge to see what others I have, the sound so far is smoother, less forward . Bass seems deeper

Are these the two 10uf caps you are playing with ?

[leo]

Those blue ones in the picture are 10uf polyester , I've a few other types to try yet, some electrolytics etc
Polypropylene sounded better than the blue polyesters but their 40mm diameter

[Puffin]

What difference have you found from replacing the original caps?

[leo]

What difference have you found from replacing the original caps?

you mean the tants around the dac ? I found the Silmics a little coloured and over warm sounding for my taste .The Silmics I fitted had brown and gold sleeve where as the lower voltage ones seen on this forum are white and brown . They may be exactly the same I want to try some lower voltage brown and white just to be sure.