MyRef_C with Ultimate BOM

[regiregi22]

you can lay out the trafos and the boards attached to the heatsinks and measure. Then turn them 90º or 180º and measure again. That should be an easy fast operation if you don't screw the boards with bolts

Regards,
Regi

[madisonears]

I'm not sure what kind of noise you're concerned about shielding against. If it's noise from the traffo and AC, there is no need to take any extraordinary precautions. My amps are mounted only a couple inches away from the traffo, and they are stone silent. All that lies between the amps and their traffo is the power supply caps. You do not need to arrange heatsinks to block anything. In fact, having to route AC around heatsink, past the amplifier to the traffo may cause more noise from cabling than it helps avoid. Use the simplest, most direct routing of ALL internal wiring, especially signal input, and you need take no further precautions.

[CognitiveDiscord]

Just curious... Although the idea of reading through 93 pages of posts sounds AWESOME, I just wanted to know if this group buy already went through. Was kinda hoping I could get in on the fun! The date range for these posts are pretty far apart, so I assume it has gone through.

[AndrewT]

This GB is finished.
Another may start up, but be prepared to wait.

This or it's sister thread may come sooner:
MyRef RevD - successor to RevC

[udailey]

AND linuxguru has boards right now for his iteration of the MyREFC which is quite similar to this one AND it has room on the board for all components whereas this board in this thread was quite cramped for room with all the component swapping we did.
Uriah

[ben-jam-in]

I just wanted to say what a gem this amp turned out to be. The ref C biamping mono's have been going strong for a couple months now. I built them for my brother, both he and I are very happy with them.

I Want to say thanks to all the people who put a lot of hard work into the group buy, as well as to the people who spent a lot of time swapping parts, tuning the sound. The Ref C is just an awesome amplifier, It puts my "regular" chip amp to shame.

Thanks everyone,

Ben

[billo44]

Originally Posted by billo44

I am just about ready to start laying out the 'bits' in the case for my amp.
I am curious... I saw Lazarus quote above and thought that's a good idea! I'll do that.
Now I am wondering if a big aluminium heat sink actually has more shielding effect than the power supply caps would? In that case I would be better with toroids one side of the heat sink and amp boards the other?

I have a strip of suitable heat sink long enough to take two amp boards comfortably.

Does anyone have any thoughts on this?
I'm just thinking aloud....

Cheers
Bill

Dear Andrew, Regi and Madisonears, thanks for your posts.
Helpful ideas, and comments! I wish I had the wherewithal two build two amps Andrew... but I can as Regi suggests try a few different layouts and watch for AC noise on a scope at the output.
Madison ears the simple practical advice is very welcome and sounds good. Nice looking amp you built there! Can you ID the cap you appear to be using across the mains switch?
They should be safety rated shouldn't they? I was looking for a suitable cap for 100V AC mains switches and getting confused by too much information on the intrawebular thingy.
I'm easily confused I fear!

Thanks again
Bill

[cersepn]

i'm late to the party, but does anyone have spare boards/kits they wish to sell?