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Old 15th December 2010, 01:10 PM   #621
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Quote:
Originally Posted by EUVL View Post
Yes they do have versions with aluminium plates, but the angles and the screws are still most likely steel (magnetic).
Is that a bad thing? I thought that steel or magnetic conductors were bad for carrying signal, didn't even imagine that having these materials near will affect.

Quote:
Originally Posted by Spev View Post
Anyone running F5 with DCB1 pre? Any issues with them both being dc coupled?
Yes I do, not issues at all with DCB1's protection relay. Neither turning first the preamp on nor the poweramp.
But I have output capacitors at my source.

Regards,
Regi
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Old 22nd December 2010, 06:00 AM   #622
reytnz is offline reytnz  New Zealand
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Quote:
Peter Daniel;2399316]This GB (3rd re-run) was just opened, so plenty of boards are available.
Hi Peter,

Recieved mine today, Thanks!!

ReytNZ

Last edited by reytnz; 22nd December 2010 at 06:02 AM.
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Old 27th December 2010, 02:57 PM   #623
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Am still waiting for the boards to arrive. Peter shipped them on 27th Nov.
Hopefully they will arrive soon. =]
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Old 28th December 2010, 04:40 AM   #624
potepuh is offline potepuh  Slovenia
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Hi Peter

Are there any F5 boards left?
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Old 28th December 2010, 06:48 AM   #625
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Yes, plenty of boards still available.
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Old 28th December 2010, 04:07 PM   #626
h_a is offline h_a  Europe
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Quote:
Is that a bad thing? I thought that steel or magnetic conductors were bad for carrying signal, didn't even imagine that having these materials near will affect.
Technically? No.

I remember Syn08 found for his ultralow distortion amps that steel made a measurable difference, but before you worry about steel in context with such amps, you need to get wiring/grounding right first. Really big topic for ultralow distortion amps.

No need to worry about that
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Old 29th December 2010, 01:59 AM   #627
Kilroy is offline Kilroy  United States
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Quick possibly newb question, I found some 22,000uf 35V caps for my stereo F5 project... Is 35v sufficient? I see people going up to 65v and wasn't sure if that's just a product of what was available at the time or some other meaningful reason.

I know Nelson specs 18000uf 25v... I just want to verify that's OK for this PSU design as well... I don't see anything that would cause a change but I'm a rookie.
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Old 29th December 2010, 02:10 AM   #628
tinitus is offline tinitus  Europe
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Quote:
Originally Posted by Kilroy View Post

I know Nelson specs 18000uf 25v...
I bet they are with good ripple ratings (current)
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Old 29th December 2010, 01:06 PM   #629
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Default ordering boards....

Peter, I thought I would pick up another set of F-5 boards. Do we use the info and pricing on page 1 still? seems like I remember an increase for shipping or something? Same pay pal address on the audiosector site?

Thanks,

russellc
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Old 29th December 2010, 01:13 PM   #630
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Quote:
Originally Posted by h_a View Post
Technically? No.

I remember Syn08 found for his ultralow distortion amps that steel made a measurable difference, but before you worry about steel in context with such amps, you need to get wiring/grounding right first. Really big topic for ultralow distortion amps.

No need to worry about that
Thanks, quite recomforting


Kilroy, you must choose capacitor rating to be AT LEAST higher than the applied voltage. So, for a 24v supply, 25v rating would be enough. They won't explode if you apply 26v or even 28, but that will shorten their life.
Personally, I would use 35v for a 24v supply. Going higher only increases size and cost.

Regards,
Regi
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