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Old 18th February 2013, 09:13 PM   #361
tinitus is offline tinitus  Europe
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Quote:
Originally Posted by permaneder View Post
...or even better NIPPON CHEMI-CON Series PXA (~ EUR 1 each)
may I suggest NIC NRSG, 1000uf/35V
one at each mosfet
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Old 18th February 2013, 09:19 PM   #362
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Quote:
Originally Posted by Rush View Post
I will take 2 stereo pairs (4 boards).
Will you do a regulated supply board too? I'd take 8 or more of those.

Rush
Yes, I could. Please send a PM for more information.
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Old 18th February 2013, 10:46 PM   #363
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+1 stereo set
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Old 19th February 2013, 01:47 AM   #364
nik.d is offline nik.d  Serbia
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One more set for me pls.
Total: 2 sets
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Originally Posted by nik.d View Post
+1
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Old 19th February 2013, 02:36 AM   #365
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I would order at least one set. Thank you.
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Old 19th February 2013, 02:43 AM   #366
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Quote:
Originally Posted by jameshillj View Post
I would like a pair of boards also, Per - can easily trim them down to 3 o/p Fets if required -

Could you add 2 small electro/solid poly caps across the rails to a separate 0Volt point near the jfet input, maybe 47uF+ ...
Jameshillj,

I saw you recommended that tweak in the F5 thread and wasn't sure exactly how you implemented it. I was also wondering if you can tell if your resistor upgrades can be used on these boards.

Thanks,
David
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Old 19th February 2013, 04:46 AM   #367
Malvin is offline Malvin  United States
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interested in 1 stereo set
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Old 19th February 2013, 06:26 AM   #368
tinitus is offline tinitus  Europe
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Quote:
Originally Posted by nik.d View Post
One more set for me pls.
Total: 2 sets
please note, this is not a GB/order thread

it is only to see if there is enough interest

and it looks like it
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Old 19th February 2013, 08:13 AM   #369
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Quote:
Originally Posted by tinitus View Post
please note, this is not a GB/order thread

it is only to see if there is enough interest

and it looks like it
Hi all,

Thanks for your interest in the Juma F5 boards. I will definitely order a small run.

The boards will be FR4 1.55mm thick, two layers, 105 copper cladding, green solder masks on both sides, white silk screen print on the top side. The production time will be approximately two weeks.

The price per set will be ~ EUR 25 (minimum 15 sets) or ~ EUR 20 (minimum 25 sets) plus shipment from Germany: EUR 3.45 Priority mail (max weight = 500g) + EUR 2.05 registered mail (optional) + EUR 3.55 insurance (optional).

Please email your authoritative orders by PM and let me know your shipping address and your email address. I'll collect orders till the end of the next week at least and will inform you about the effective price per set depending on the total ordered number then.

I will also offer regulated supply boards with adjustable output voltages on request. These boards do not include rectifiers and load/buffer capacitors. Please send PM for more information.

Here is a picture of the actual amp board. I added Papa's "tone control", a 200R trim pot paralleled to the 10R Source Rs of the JFETs (optional). The MOSFET degeneration Rs are MPC70 .33/2W.

Georg
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File Type: jpg F5 Juma THD Foto2.jpg (382.8 KB, 284 views)

Last edited by permaneder; 19th February 2013 at 08:22 AM.
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Old 19th February 2013, 09:49 AM   #370
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[QUOTE=permaneder;3376150


I will also offer regulated supply boards with adjustable output voltages on request. These boards do not include rectifiers and load/buffer capacitors. Please send PM for more information.


One set (2 boards = dual Mono) will cost ~ EUR 20 (minimum order = 15 sets)
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File Type: jpg Regelungen Foto 2.jpg (568.3 KB, 276 views)

Last edited by permaneder; 19th February 2013 at 10:04 AM.
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