F1 Group Buy

hifimaker · 22nd December 2008, 05:17 PM

Nelson has approved a GB for his balanced F1 transconductance amplifier.

Please review the Design Thread to help verify the design and provide comments for improvements before the GB closes.

The GB will close on December 31st 2008, when the boards will be ordered.

To sign up, please add your name to the F1 GB Wiki . I'll only pull names from the Wiki and not the forum pages. The wiki will contain all ordering information. For now, register on the wiki and I'll provide payment details later on how to pay via PayPal only.

-David

hifimaker · 22nd December 2008, 10:39 PM

Pretty good, we are up to 22 boards in half a day.

Please feel free to ask questions about the GB here, and provide comments about the design on the pass forum.

-David

audiotux · 22nd December 2008, 11:01 PM

Hi David ,

sorry i have problems with the wiki thingie ,
i am in for 1 Stereo Set (2 boards) .
Thanx in advance .

Greetings from Germany
Jürgen

hifimaker · 22nd December 2008, 11:12 PM

Hi Jürgen,

I added you to the Wiki for 2 boards.

-David

ejfud · 23rd December 2008, 02:20 AM

I'm in for a pair.

hifimaker · 23rd December 2008, 04:52 AM

Quote:

Originally posted by ejfud
I'm in for a pair.

OK, sign up on the Wiki to get in.

-David

samsagaz · 23rd December 2008, 04:57 AM

wich PS will use this boards? will be great if can build some PS too.

hifimaker · 23rd December 2008, 06:08 AM

The PSU is the same as the F3 & F5. Peter Daniel has a GB underway and he's offering PSU boards pretty cheap. I did not see the need to duplicate the effort for PSU boards.

-David

jims · 23rd December 2008, 11:15 AM

Great looking board, I am in for 4. One suggestion though: Can you space three of the transistors to match the spacing of one edge of Peter Daniels F4 board? I hate drilling, tapping and buying heat sinks, this way one could just drill and tap a couple of new holes, and swap the boards on the same heat sink/chassis that they use with their F4, which is also compatible with the spacing of Peter's new F5 board. Just an idea.

Thanks

JimS

samsagaz · 23rd December 2008, 11:22 AM

OK, so one pair for me!

22nd December 2008, 05:17 PM	#1
hifimaker diyAudio Member Join Date: Oct 2003 Location: San Jose	F1 Group Buy Nelson has approved a GB for his balanced F1 transconductance amplifier. Please review the Design Thread to help verify the design and provide comments for improvements before the GB closes. The GB will close on December 31st 2008, when the boards will be ordered. To sign up, please add your name to the F1 GB Wiki . I'll only pull names from the Wiki and not the forum pages. The wiki will contain all ordering information. For now, register on the wiki and I'll provide payment details later on how to pay via PayPal only. -David

23rd December 2008, 02:20 AM	#5
ejfud diyAudio Member Join Date: Feb 2005 Location: MN	I'm in for a pair. __________________ Gary One good driver is all I need.

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22nd December 2008, 10:39 PM	#2
hifimaker diyAudio Member Join Date: Oct 2003 Location: San Jose	Pretty good, we are up to 22 boards in half a day. Please feel free to ask questions about the GB here, and provide comments about the design on the pass forum. -David

22nd December 2008, 11:01 PM	#3
audiotux diyAudio Member Join Date: Nov 2004 Location: Bruchsal/Germany	Hi David , sorry i have problems with the wiki thingie , i am in for 1 Stereo Set (2 boards) . Thanx in advance . Greetings from Germany Jürgen

22nd December 2008, 11:12 PM	#4
hifimaker diyAudio Member Join Date: Oct 2003 Location: San Jose	Hi Jürgen, I added you to the Wiki for 2 boards. -David

23rd December 2008, 04:57 AM	#7
samsagaz diyAudio Member Join Date: Aug 2004 Location: Argentina	wich PS will use this boards? will be great if can build some PS too.

23rd December 2008, 06:08 AM	#8
hifimaker diyAudio Member Join Date: Oct 2003 Location: San Jose	The PSU is the same as the F3 & F5. Peter Daniel has a GB underway and he's offering PSU boards pretty cheap. I did not see the need to duplicate the effort for PSU boards. -David

23rd December 2008, 11:15 AM	#9
jims diyAudio Member Join Date: Mar 2007	Great looking board, I am in for 4. One suggestion though: Can you space three of the transistors to match the spacing of one edge of Peter Daniels F4 board? I hate drilling, tapping and buying heat sinks, this way one could just drill and tap a couple of new holes, and swap the boards on the same heat sink/chassis that they use with their F4, which is also compatible with the spacing of Peter's new F5 board. Just an idea. Thanks JimS

23rd December 2008, 11:22 AM	#10
samsagaz diyAudio Member Join Date: Aug 2004 Location: Argentina	OK, so one pair for me!