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Old 31st March 2012, 08:40 AM   #321
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Boards and resistors arrived. Superb Quality.
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Old 31st March 2012, 09:09 AM   #322
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Location: Milan
Boards arrived with better than commercial quality.
Thank you.
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Old 31st March 2012, 09:23 AM   #323
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Location: Hamburg / Germany
... and I can tell you:

The sound is as superb as the quality of the PCBs.

Best regards - Rudi_Ratlos
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Old 31st March 2012, 09:27 AM   #324
brianco is offline brianco  Ireland
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Location: Scottish Borders - Kelso; on the famous Tweed River!
Rudi - This - I hope - is my last BoM question!

Will you please recommend a main heatsink profile and size please. (Fischer?)

And for interests sake, which preamp/buffer do you use to drive this amp?
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Old 31st March 2012, 10:32 AM   #325
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Brianco: your questions are always welcome .

I do not use a Pre-AMP / Buffer at all.
(You have the builder's manual! Take care of the values of resistors R29, R30 and R36!)

I use a source-selector (a small DIY relay - PCB: my sources are CDP, MP3-Player and DAC) and the Lightspeed - Volume-Attenuator
(you can take a "good" dual log. potentiometer as well).

Regarding the heatsink:

I use an ALU-L - profile: 40 x 40 x 4mm.
This heatsink:

Click the image to open in full size.

http://www.abload.de/img/kke0usm.png

for example, is very well suited.

Best regards - Rudi
Attached Images
File Type: png KK.png (98.6 KB, 368 views)
File Type: jpg Lightspped.jpg (231.9 KB, 382 views)

Last edited by Rudi_Ratlos; 31st March 2012 at 10:35 AM.
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Old 31st March 2012, 11:18 AM   #326
brianco is offline brianco  Ireland
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Location: Scottish Borders - Kelso; on the famous Tweed River!
@Rudi,

Again, many thanks. Without your advice I would have chosen a much bigger heat-sink....at a lot more money!!!! So your advice has saved me a lot of time and money!!! Thank you again.

Brian
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Old 31st March 2012, 12:02 PM   #327
AndrewT is offline AndrewT  Scotland
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Join Date: Jul 2004
Location: Scottish Borders
To264 PCBs @ home in Scottish Borders.
Thanks.
__________________
regards Andrew T.
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Old 31st March 2012, 12:16 PM   #328
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Greetings to Scotland - Rudi
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Old 31st March 2012, 12:33 PM   #329
n_dori is offline n_dori  Albania
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Just received my boards They look fantastic!
Many thanks Rudi!
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Old 31st March 2012, 12:55 PM   #330
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Gentlemen,

once you have built these boards: listen to Eva Cassidy, Jennifer Warnes, ...

You want stop listening any more ....

Best regards - Rudi (not RATLOS any more)

P.S.: Maybe my FC-100 (Mihai's - ROENDER's design) -

Roender's FC-100 Rev.1 Group-Buy) -

may be a worthy rival ...

Last edited by Rudi_Ratlos; 31st March 2012 at 01:22 PM.
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