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Old 19th February 2012, 11:03 PM   #1081
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Quote:
Originally Posted by VT67 View Post
I was wondering if you can get those galvanized corner profiles, to bolt the case together, separatly?

Walter
Why not make your own from a piece of L-shaped extrusion or sheet metal?
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Old 20th February 2012, 05:16 AM   #1082
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beautiful build ! enjoy the sound!!!
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Old 26th February 2012, 02:51 PM   #1083
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Default B1 has gone to advanced B1

I was playing with a DIY DCB1 but the board was not very good.

I've since chopped the board and have reconstructed the B1 with the Salas Shunt Reg.

It does sound VERY GOOD, but without A/B comparative testing I can't say if it sounds any better with the Reg.
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Old 26th February 2012, 04:40 PM   #1084
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Default F4

Finally done. Took much longer than expected but good things come to those who wait.

Some details of the enclosure before assembling:



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With metalwork at that level it is actually pretty difficult to find decent black screw - I haven't found them yet. After integration of the electronics:


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Closeup - Some changes there, smaller resistors (visible), higher bias (not visible ) - PCBs from Nagard & Elfenreiter...


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Below the capacitors - some Hexfreds and a Filter/Current Limiter


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Pretty, isn't she?


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Apologies for the slightly noisy pictures but its rather dark in my living room at that time of the year .

I know the signal cabeling is not done properly/twisted etc. but the F4 has literally no background noise/humm whatsoever even the way it is so its ok for now. I also know that the F4 technically is not an amplifier, I used the word anyway .

This one is done, I have another one which is almost done, intend to run them in balanced mode. However, I'm having so much fun that I am not really motivated to finish the other one. Really good sounding amplifier and as always - thanks Mr. Pass.

Cheers
Sven
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Old 26th February 2012, 04:47 PM   #1085
VT67 is offline VT67  Belgium
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That is a very clean and tight beautiful amplifier you put together sir.
Are those panels painted after engraving?

Regards

Last edited by VT67; 26th February 2012 at 04:59 PM.
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Old 26th February 2012, 04:52 PM   #1086
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Wow masterpiece !One of the best i've seen.
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Old 26th February 2012, 05:02 PM   #1087
6L6 is offline 6L6  United States
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That is, by far the nicest F4 that has been made.

Fantastic!!

One question, it is black or a dark grey?
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Old 26th February 2012, 05:06 PM   #1088
Mixon1 is offline Mixon1  Sweden
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Ooh! Very nice! Congratulations!
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Old 26th February 2012, 05:16 PM   #1089
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Thanks for the nice comments. The enclosure is cnc cut and then shot blasted / anodized, nothing else. It is black but rather dull (not glossy). Its not grey but it is a seems a bit lighter than e.g. the black aluminium bolts I tried. As I said, I have problems finding bolts that look similar.

The metalwork has been done by a guy I know who owns a CNC mill etc. - if somebody lives in Germany and wants the contact pm me, he is for sale .

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Sven
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Old 26th February 2012, 05:28 PM   #1090
Marra is offline Marra  United Kingdom
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Wow that is one neat work of art
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