USSPA Build thread - Page 5

Vunce · 21st August 2019, 05:46 AM

Thanks Fab!
I’m planning the layout and gathering parts

zman01 · 21st August 2019, 06:14 AM

Good that you asked Vunce and thanks for sharing Fab. It will be helpful for folks planning their lahout and chassis.

fab · 23rd August 2019, 02:00 AM

I just realized I have ordered black colour pcbs. I hope it is ok...

Fab

Vunce · 23rd August 2019, 02:15 AM

Excellent Fab!
No prob with the pcb color,
that will help for an ultra quiet “black” background

zman01 · 23rd August 2019, 03:50 AM

Fab,

Black PCBs look nice and are quite common for high end PC motherboards, video cards sound cards.

Our USSA-5 amplifier PCBs are also black - so it will be a nice match.

fab · 24th August 2019, 08:00 PM

All USSPA pcb of the small group buy are at the post office.
Let me know once you receive the pcbs.
Thanks
Fab

manniraj · 30th August 2019, 09:15 AM

Guys where are you procuring the matched 2SK2013/313 mosfets either for this preamp or Fab's USSA5 power amp build. The only known source to me was member liubincalvin from Singapore, who seems to be inactive now since some months now. Any other source to get these hard to find power mosfets?

Thanks

Vunce · 31st August 2019, 03:58 AM

Hi Fab,
I received the USSPA pcb’s today, thank you.
Very quick shipping from Canada!!
My aluminum chassis will not arrive for a couple of weeks so I threw together this little wooden case, it will have an aluminum front panel also.

manniraj · 31st August 2019, 05:05 AM

Any idea about the genuineness of these mosfets and as the site says with additional $2 he will do beta match. Not sure what is beta match.

TOSHIBA MOSFET 2SK2013 2SJ313 Pair 2-10R1B_Transistor_Analog Metric - DIY Audio Kit Developer

fab · 31st August 2019, 05:52 AM

Hi Vunce
You are welcome!
Nice wood work.
Fab

24th August 2019, 08:00 PM	#46
fab diyAudio Member Join Date: Mar 2004 Location: Canada	Small pcb group buy All USSPA pcb of the small group buy are at the post office. Let me know once you receive the pcbs. Thanks Fab __________________ My stuff USSA, FSSA: https://fabaudio.online

31st August 2019, 05:52 AM	#50
fab diyAudio Member Join Date: Mar 2004 Location: Canada	Hi Vunce You are welcome! Nice wood work. Fab __________________ My stuff USSA, FSSA: https://fabaudio.online

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21st August 2019, 05:46 AM	#41
Vunce diyAudio Member Join Date: Jan 2014 Location: LI, NY	Thanks Fab! I’m planning the layout and gathering parts

21st August 2019, 06:14 AM	#42
zman01 diyAudio Member Join Date: Feb 2011 Location: Dhaka	Good that you asked Vunce and thanks for sharing Fab. It will be helpful for folks planning their lahout and chassis.

23rd August 2019, 02:15 AM	#44
Vunce diyAudio Member Join Date: Jan 2014 Location: LI, NY	Excellent Fab! No prob with the pcb color, that will help for an ultra quiet “black” background

23rd August 2019, 03:50 AM	#45
zman01 diyAudio Member Join Date: Feb 2011 Location: Dhaka	Fab, Black PCBs look nice and are quite common for high end PC motherboards, video cards sound cards. Our USSA-5 amplifier PCBs are also black - so it will be a nice match.

30th August 2019, 09:15 AM	#47
manniraj diyAudio Member Join Date: Nov 2012	Guys where are you procuring the matched 2SK2013/313 mosfets either for this preamp or Fab's USSA5 power amp build. The only known source to me was member liubincalvin from Singapore, who seems to be inactive now since some months now. Any other source to get these hard to find power mosfets? Thanks

31st August 2019, 05:05 AM	#49
manniraj diyAudio Member Join Date: Nov 2012	Any idea about the genuineness of these mosfets and as the site says with additional $2 he will do beta match. Not sure what is beta match. TOSHIBA MOSFET 2SK2013 2SJ313 Pair 2-10R1B_Transistor_Analog Metric - DIY Audio Kit Developer