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Old 11th January 2010, 02:40 PM   #821
Zen Mod is offline Zen Mod  Serbia
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Quote:
Originally Posted by JeroenR View Post
Done. (Almost...)

Today I finished my B1. The wire, attenuator and sinks still need attention but it is good enough to be put in production.

It sounds very good (no break-in time yet) in he sense that the music was still very detailed. If it changed anything I will never know as I removed the selector switch and attenuator from my tube-amp and I do not plan to put it back. I just needed a pre for my coming F5 and Tubelab SE.

Thank you very much for the circuit, pcb and support!!

Jeroen
you want improvement ?

wire all signal routes with decent wire - 0,25mm dia , and less
I'm using Cu enameled with silver , 0,25mm dia , and there is always positive result - comparing to even Silver wire but with bigger dia
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Old 11th January 2010, 02:43 PM   #822
udailey is offline udailey  United States
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I agree. Smaller diameter wire sounds better. I use 30AWG silver and have not tried an AB comparison to copper but the smaller diameter is definitely better.
Uriah
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Old 11th January 2010, 02:59 PM   #823
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Is such things really audible, or are my 53 years old good ears too old?
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Old 11th January 2010, 03:01 PM   #824
udailey is offline udailey  United States
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I dont use any measuring equipment to tell me if it sounds good other than my ears and my own personal set of psychoacoustics.
Uriah
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Old 11th January 2010, 03:04 PM   #825
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No, no, I understood that. And in younger days I heard all kinds of differences. (I think )
Well, if one hears a difference, or feel less listening fatigue with this or that, good and well!
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Old 11th January 2010, 08:42 PM   #826
Salas is offline Salas  Greece
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Quote:
Originally Posted by khaho View Post
Got mine working, no case yet. Relays are different because could not find the Omrons close, but they work fine.

The DC offsets are -2.1mV and 0mV when the relay goes on, and they drift to 0.7mV and -0.7mV slowly, takes few minutes. Maybe need to do some changes to get them lower.
Under a mV in a few mins is a very fine result.
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Old 11th January 2010, 09:28 PM   #827
JeroenR is offline JeroenR  Netherlands
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Originally Posted by Zen Mod View Post
you want improvement ?

wire all signal routes with decent wire - 0,25mm dia , and less
I'm using Cu enameled with silver , 0,25mm dia , and there is always positive result - comparing to even Silver wire but with bigger dia
Ok, I will try that.

I see PartsConnexion only has 28AWG silver, but I love the cotton tubing to go with it.
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Old 11th January 2010, 09:46 PM   #828
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Quote:
Originally Posted by JeroenR View Post
Ok, I will try that.

I see PartsConnexion only has 28AWG silver, but I love the cotton tubing to go with it.
I suggest... Go for thinner wire in any material is way more important than the material it self.

Thinner copper wire will sound better than thicker silver wire... even for speaker cables. Crazy? Try it!

Nice thin wire IMO: Farnell Export

And always use solid core wire for signal and speaker cables... or better... use foil!
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Old 11th January 2010, 09:53 PM   #829
grufti is offline grufti  United States
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NB, your Farnell link doesn't really work.
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Old 11th January 2010, 09:54 PM   #830
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Click on anything ("Farnell Export" for example) to initiate a session with the website and then click Nelson's link again.
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