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Old 1st October 2009, 04:40 PM   #1
Peter Daniel is offline Peter Daniel  Canada
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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/showthread.php?t=149672
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File Type: jpg F2.jpg (193.4 KB, 1775 views)
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Last edited by Peter Daniel; 1st October 2009 at 04:52 PM.
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Old 1st October 2009, 04:45 PM   #2
Michael Rothacher is offline Michael Rothacher  United States
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F2 pcb group buy...
Peter:

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

Thank you.

Mike
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Old 1st October 2009, 04:51 PM   #3
Peter Daniel is offline Peter Daniel  Canada
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Only F5 boards are still available: http://www.diyaudio.com/forums/showthread.php?t=140306
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Last edited by Peter Daniel; 1st October 2009 at 04:54 PM.
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Old 1st October 2009, 05:04 PM   #4
ra7 is offline ra7  United States
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How about a reissue of the F4 boards?
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Old 1st October 2009, 05:11 PM   #5
Peter Daniel is offline Peter Daniel  Canada
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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.
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Old 1st October 2009, 05:21 PM   #6
ra7 is offline ra7  United States
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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.
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Old 1st October 2009, 05:28 PM   #7
Peter Daniel is offline Peter Daniel  Canada
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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
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File Type: jpg boards.jpg (193.9 KB, 1705 views)
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Old 1st October 2009, 05:46 PM   #8
ra7 is offline ra7  United States
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Wow... I wish I could pick one of those....
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Old 5th October 2009, 07:07 AM   #9
Jaac is offline Jaac  Netherlands
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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 ?
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Old 5th October 2009, 01:45 PM   #10
Tea-Bag is offline Tea-Bag  United States
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Quote:
Originally Posted by ra7 View Post
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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