Pictures of your Tubelab amp

[Evenharmonics]

Originally Posted by Nikon1975

The only thing I do not like, is a little buzz, hardly audible that is coming from the amp itself, it is somewhere in the board side.

Power transformer maybe? From what I've been reading, it's common.

[Nikon1975]

Nop, what puzzle me that it looks like is coming from the board.

D.

[boywonder]

I've also noticed that something on the board buzzes, but I only hear it when I'm troubleshooting and have not taken the time to figure out what component.

[rknize]

It might just be the rectifier.

[tubelab.com]

I have heard filter caps buzz. Can electrolytics, motor runs, and even PC mount snap ins. All can buzz and the only cure is replacement.

[Nikon1975]

Probably, I can happily live with it. I am just try to understand if it's a signal that something is going to explode :-)

I will try without the rectifier, this will exclude or point me to the positive supply.

Thanks,

Davide

[Nikon1975]

Here are some more pictures of the inside and outside.

I am particularly happy of the general layout, as I think is one of the main factor that makes the amp so quite. The two polypropylene capacitors are few centimeters away from the OPT, I could easily attach some smaller cap, directly on the additional contacts of the caps, but I am not sure it will bring any benefit, as these caps have already very law ESR.

The cap next to the choke is an high quality electrolytic. The reservoir cap is on board. I used a star topology for the ground, and the center is at the reservoir cap. There is a thermistor between the ground and the safety earth.

Happy new Year to everybody,

Davide

[p_e_r_r_y_]

Here’s my universal TSE with 45’s. I’m very happy with the results.
OPT’s are from Electra-Print. Chassis and (build-in) PT are from AE-Europe (ae-europe.nl).
I added a pre-out for my subwoofer, a 70hz highpass switch and adjustable 6db BSC. (credits to Matthijs of triplemaudioshop.nl)
It’s hum free after doubling C1.
Power is absolutely enough for a great sound on my Fostex FE126eN sphere speakers.

[boywonder]

Originally Posted by p_e_r_r_y_

I added a pre-out for my subwoofer, a 70hz highpass switch and adjustable 6db BSC. (credits to Matthijs of triplemaudioshop.nl)

Nice! Can you share some details of the above mods?

[p_e_r_r_y_]

Originally Posted by boywonder

Nice! Can you share some details of the above mods?

In red you can see the additions to the original schematic.