UGS Power : it's U.P.

[korben69]

Masked agent of entropy Fan's Club

 

[jormajj]

Please count me in too (4 monoblocks)

 

[tryonziess]

Zen,
you the man. Thanks for posting the gerbers.

Tad

 

[mpmarino]

by any chance,

will this UGS thing drive a F4?

 

[Zen Mod]

by any chance,

will this UGS thing drive a F4?

knowing kwayzee Frenchies among us - their headphone amps have more output power than F4 .......



(now my Joda Manu will go berserk )

 

[Manu]

knowing kwayzee Frenchies among us - their headphone amps have more output power than F4 .......



(now my Joda Manu will go berserk )

Yes, especialy with shunty-psu ...
Vive le HUG
But how do you know about that ?



BTW : Nice pic ... You look very handsome ... But what exactly are you eating ... Cevapi not fresh ?...


Manu

 

[Zen Mod]

Yes, especialy with shunty-psu ...
Vive le HUG
But how do you know about that ?



BTW : Nice pic ... You look very handsome ... But what exactly are you eating ... Cevapi not fresh ?...


Manu

hehe


ZM weiss Bahnhof , as usual .....

btw - that creature on pic isn't Mighty ZM , but one Mighty Warrior from "Eric the Viking" , just going to berserk ......

berserk :

Definition of berserk - WordReference.com Dictionary

btw - he was also favorite companion of Mighty Black Adder .... in all ages ..... Percy , or Captain Darling , if you wish .....



edit : there are the rumours ...... reason why Serbian and French Headphone Amps usually have more power than F4 is - nothing else than - short circuit between two headphones .........

 

[Manu]

btw - that creature on pic isn't Mighty ZM

You're kidding ...

edit : there are the rumours ...... reason why Serbian and French Headphone Amps usually have more power than F4 is - nothing else than - short circuit between two headphones .........

That's embarrassing

 

[NYCOne]

PCB

Are there any PCBs for this amp? It looks great. I wasn't sure if there was ever a group buy, or if anyone has extra PCBs.

 

[Luke]

Hi Nycone, there was a group buy on the french forum where this amp was first published. The guys were really helpful in helping me get a set of pcbs despite not knowing any french and being able to navigate the forum. If your patient there may be another group buy on offer in the near future.
Good luck!

 

[NYCOne]

Did you complete the amp? If so, how do you like it?

 

[Luke]

not yet, about 70% done, will start again this summer.

 

[EDDELARUE]

nunca deixe e-mail ou similares abertos em computadores públicos, você pode se tornar vítima de crimes virtuais.

 

[jacco vermeulen]

You haven't sent me one, did you ?

 

[Luke]

nunca deixe e-mail ou similares abertos em computadores públicos, você pode se tornar vítima de crimes virtuais.

Im not sure what relevance cyber security has to this thread?

 

[samoloko]

what Is class A output of the amp at 4 R

 

[Manu]

Depends on bias current
According to the maths : with 0,5A bias : about 9W rms

Manu

 

[Luke]

I just been working on this amp again and realsied that I got a mixture of 10 X 2sc2911S and 6 X 2sc2911R. The R are lower hfe. I was wondering if I should get more of the S grade or will it not matter for this amp?

 

[Manu]

Depends on bias current
According to the maths : with 0,5A bias : about 9W rms

Manu

Sorry wrong ...
9W is class A power max at 8R with stock 0,250mA bias per Mosfet
(means leaving class A at twice this value = 0,5 A)
@ 4R you get about 4,5W class A max

If you go to the extreme and choose 0,4 A per Mosfet - leaving class A at 0,8A/Mos you'll get :
about 11,5 W @ 4R
about 23W @ 8R

Manu

 

[Josip_Del]

Ok I have a couple of questions about this amp.
1. Can it be done with 2 pairs of output mosfets per side not like original 3.
2. can the output stage be on 30V like Input
3. and what is the gain of amp.
4. That’s all (thanks)