F5 Turbo Circuit Boards

[N-Brock]

Hi all,

I've got some of the new F5t boards in hand. I'm planning on going V2 monoblocks.

I've got two 25 volt 500 VA transformers I'll be using and some big screw top caps.

Something I can't seem to find is a list for populating the boards in the V2 style. What components are omitted, what needs jumpers, and what parts on Pass' published schematic correspond to part numbers on the board.

The issue is the part numbers on the board don't correspond to the part numbers in the schematic. I've started a spread sheet to straighten things out that I will post. Any help I could get on this would be great.

Best,
Nelson

[AudioSan]

it dipends. are you planning on cascoding?

[tinitus]

boards look really great

but why does it say V2 ? ....with drivers, shouldn't it say V3 ?

[AudioSan]

it say v2.0 it was the sec board layout.

[Renron]

Pant, pant, pant. Cool looking boards.
any currently open GB for parts ?
Ron

[N-Brock]

Originally Posted by AudioSan

it say v2.0 it was the sec board layout.

Ding ding

I forgot to add my spreadsheet of the parts population. I seem to have it all worked out but the more who check the better off we'll be. I'm not sure about jumpers but I kinda think they won't be needed. I'll have to trace out the board in more detail later.

I am not planning on cascoding, my rails will be right around 32 volts which should be fine for the input jfets.

Here's the list.
https://docs.google.com/open?id=0B5A...F9wOS16ZFpEOVk

The forum doesn't take .xlsx (excel) files. If you want the original there's a .zip attached.


Best,
Nelson

[AudioSan]

cascoding will not hurt but if you chose not to, you need do short C-E on Q5 and 6.
and drop C5 and C6. also drop R25,26,27,28,29 and 30.

[N-Brock]

AudioSan, since you seem to be the resident expert could you tell me what the pad labeled "link" is intended for? I could try to guess but I suspect you know for sure.

Thanks,
Nelson

[AudioSan]

it is for linking the midpoint of R3 and 4 to ground. as far as i know, it was made as a link for a reason regarding balanced version. so you need to make a link there

EDIT: after a quick check, i see that i was right in balanced version, the midpoint of R3 and 4 are conected to the midpoint of R3 and 4 of ampboard nr2 and not to ground.

[rolandong]

Best if there's build guide to answer these questions.