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-   -   F2 pcb group buy... (http://www.diyaudio.com/forums/group-buys/152785-f2-pcb-group-buy.html)

Peter Daniel 1st October 2009 04:40 PM

F2 pcb group buy...
 
1 Attachment(s)
I'm opening this new thread as it seems like the offer for F2 boards has been lost within the original WTB inquiry.

The F2 amp board has a scoring line and is good for two channels.

Price for two channel pcb is USD$18, shipping included, paypal payment to my e-mail address posted here: http://audiosector.com/contact.asp

All boards will be shipped by airmail, with no tracking and no insurance and I cannot assume responsibility for lost packages. If you need insurance, please add $7 to your order.

The dual channel board is pictured below, output devices spacing is exactly as with F4, F5 and AJ pcbs, so the boards are interchangeable.

The matching power supply board available from this link: http://www.diyaudio.com/forums/audio-sector/149672-universal-power-supply-pcb.html

Michael Rothacher 1st October 2009 04:45 PM

Peter:

Do you also still offer the other boards you mentioned? If so, I'd order them all at once.

Thank you.

Mike

Peter Daniel 1st October 2009 04:51 PM

Only F5 boards are still available: http://www.diyaudio.com/forums/group-buys/140306-f5-pcb-group-buy.html

ra7 1st October 2009 05:04 PM

How about a reissue of the F4 boards?

Peter Daniel 1st October 2009 05:11 PM

I don't know, I'm still stuck with 60 or so pcs of F2. Most of the interest is now with F5 and I would expect only slight interest in reissue of F4.

ra7 1st October 2009 05:21 PM

I suppose with the OB article coming up soon, interest in the high power F4 will reignite. It seems most suitable of all the Fs to drive the big woofers.

Peter Daniel 1st October 2009 05:28 PM

1 Attachment(s)
Since you asked about it, here's the collection of all boards I produced so far: A30, F2, F3, F4, F5, Aleph J. Only F3 has different mosfet spacing, all other are interchangeable ;)

ra7 1st October 2009 05:46 PM

Wow... I wish I could pick one of those.... :)

Jaac 5th October 2009 07:07 AM

Nice to see all those pcb lined up next to each other. I currently designing my next Firstwatt amps. One chassis design with interchangeable Firstwatt amps. Lucky i got the F5 board but unfortunately the Aleph-J and F4 stock is exhausted. Peter do you have any idea when they are available again ? I read something about thesting the Aleph-J X versions. And can you give the dimensions of the space between the MOSFETs and board dimensions to double check my chassis design ?

Tea-Bag 5th October 2009 01:45 PM

Quote:

Originally Posted by ra7 (Post 1939202)
I suppose with the OB article coming up soon, interest in the high power F4 will reignite. It seems most suitable of all the Fs to drive the big woofers.

I've driven OB woofer currently with an F5, and previously with an F2, both quite successfully. (see Dick Olshers OB-1) I prefer the F5. Most OB woofers are fairly sensitive, so don't take a ton of power. You can dual Mono an F5 like the F4 if you need more power.


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