Salas hotrodded blue DCB1 build - Page 232 - diyAudio
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Old 5th November 2012, 10:33 AM   #2311
Yomanze is offline Yomanze  United Kingdom
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Quote:
Originally Posted by Salas View Post
Enough, but not very deep for minimal phase turn, 4.7uF even deeper.
Thanks again Salas, 4.7uf it is (wallet says ouch!).
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Old 5th November 2012, 10:34 AM   #2312
Salas is offline Salas  Greece
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What type you got in mind?
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Old 5th November 2012, 10:48 AM   #2313
Yomanze is offline Yomanze  United Kingdom
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Originally Posted by Salas View Post
What type you got in mind?
At the moment looking at:

Obbligato Premium Gold
...some type of Mundorf Supreme
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Old 5th November 2012, 10:57 AM   #2314
Salas is offline Salas  Greece
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Good choices.

If you really got space in the box, I would recommend 4 monstrous 2.2uF Russian capacitors to make two 4.4uF pairs bypassing each pair with 0.1uF monstrous Russian Teflon. I believe they exceed the German silver in oil type even when in that config for far far less.

2 2uF 250V PIO Capacitors K75 10 Lot of 4 Hi End | eBay

0 1uF 5 600V Teflon Hi End Capacitors ft 3 Lot of 2 | eBay

Maybe ask for combined shipping fees when coming from the same vendor.
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Old 5th November 2012, 11:02 AM   #2315
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Quote:
Originally Posted by Salas View Post
Good choices.

If you really got space in the box, I would recommend 4 monstrous 2.2uF Russian capacitors to make two 4.4uF pairs bypassing each pair with 0.1uF monstrous Russian Teflon. I believe they exceed the German silver in oil type even in that config for far far less.

2 2uF 250V PIO Capacitors K75 10 Lot of 4 Hi End | eBay

0 1uF 5 600V Teflon Hi End Capacitors ft 3 Lot of 2 | eBay

Maybe ask for combined shipping fees when coming from the same vendor.
Have you ever heard the Mundorf ZN ? My prefered after DCA Cast.
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Old 5th November 2012, 11:11 AM   #2316
Salas is offline Salas  Greece
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I have experience with the SCR tin foil if its comparable, and I find it dark and heavy. I also used supreme, supreme silver in oil and supreme silver gold oil.
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Old 5th November 2012, 11:29 AM   #2317
AndrewT is online now AndrewT  Scotland
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I see 600B as the voltage rating of the teflon cap.
What does the B mean? AC or DC?
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Old 5th November 2012, 11:29 AM   #2318
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You just have to use the capacitor inline with the signal output of the DCB1 board to the output RCA's central pin. From its pin to its ring solder 1 Meg resistor.
Niko do you mind explaining what does the 1M resistor do? Is it necessary?

Also, what would the above diagrams look for 220K input imp? I have also used 2,2uF ones
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Old 5th November 2012, 11:34 AM   #2319
AndrewT is online now AndrewT  Scotland
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Salas,
I have settled on ~90ms as the RC for the DC blocking filter in my systems.
I have presented this many times and I get repeatedly told that I cannot possibly hear any difference in bass response with the filter set this low.

You are proposing 4u5F and 47k for an RC of >210ms which is more than an octave lower.

What do you find when using this frequency for your power amp roll off ?
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Old 5th November 2012, 12:26 PM   #2320
Salas is offline Salas  Greece
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Quote:
Originally Posted by AndrewT View Post
I see 600B as the voltage rating of the teflon cap.
What does the B mean? AC or DC?
B is what Greeks and Russians have for V pronounced the same. Means Volt. AC or DC don't know.
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