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F5 pcb group buy...

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AndrewT

R.I.P.
Joined 2004
There are 3 wires feeding each output FET.
The gate stopper must be mounted directly on the Gate Pin.
How should the 3 wires be arranged geometrically, to get best performance from the amplifier.
As a twisted pair + 1, or as a twisted triplet, or as 3 parallel but close spacing, or 3 parallel with wide spacing, or something else?
 
TheAnaesthetist

TheAnaesthetist

Member
Joined 2009
4-poles caps

Hi Peter

I am about to order the caps for your universal PS boards. In an earlier post you recommended top caps like Nichicon Super Through or Jensen caps. I see that you even use the ultrapricey Jensen 4-pole slitfoil caps directly attached to the F5 pcb. I just read about them on their website claiming to have better results than even the best 2-pole caps. Of course I would say the same when I want to sell my own products;) . What is your experience with the 4-poles compared to other 2-poles like the Super Through's e.g.
 
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drcg

Member
Joined 2009
PS Boards for F5

Peter Daniel said:
1 Smaller board is easier and cheaper to ship.
2 If a single cap can have enough capacitance, why use multiple?
3 Single cap usually also sounds better than few in parallel.
Click to expand...

Following your criteria and using Jensen 4 pole electrolytics, ideally, how many and what capacitance/voltage would you recommend per channel for a stereo F5?
In your opinion, would the sonic differences the Jensen caps might bring be significant enough to spend the extra $$ vs using large conventional electrolytics such as Panasonics, Elnas, etc ?
I haven't had the opportunity to compare directly. Thanks for any advice you can offer.
 
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Russellc

Member
Joined 2003
Paid Member
Running F-5 without current limiting

When removing current limiting, I understand the following are deleted:

Q5 and Q6, th1 and th2, R15, R16, R17, R18, R19, R20, R21, and R22.

Does one leave the 10K R1 and R2? Or does it go too?

Thanks,

Russellc
 
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