Aleph-X parts list

vdi_nenna · 25th December 2002, 06:49 PM

Grey and/ or John Inlow,

I got the boards yesterday in the mail, thanks John.

I do have a question. If I pull down the schematic Grey put out on 5/24/02, will the parts on the schem. match the board's screen? I tried to search for a parts list but found none under Aleph X.

Thanks and Merry Christmas,

Vince

GRollins · 25th December 2002, 09:20 PM

Merry Christmas, fella,
I never got around to posting a formal parts list...or at least I don't remember doing so. Probably should, I guess. Considering that I've got myself involved in the high-powered Aleph-X dingus, I'll have to dredge around and locate the schematic (the version I posted and the prototype had some differences...). If I can keep my focus, I'll get you up a shopping list.
As to what the boards take, I dunno. You'll have to ask the board guys. I'm not sure what path they chose.

Grey

carpenter · 26th December 2002, 01:03 AM

There's a parts list on the alpha pcb thread that follows Grey's original specs (fairly certain). The latter schematics I posted (same thread) include Grey's follow ups and are not posted in the parts list. If you use the latter schematics you'll need to modify the parts list. The only changes are the two resistors that accompany V2.

John

carpenter · 26th December 2002, 01:42 AM

here......

vdi_nenna · 26th December 2002, 12:59 PM

You guys rule!

Bricolo · 26th December 2002, 01:40 PM

the parts price would also be nice

grataku · 26th December 2002, 03:27 PM

Bricolo
should we buy the parts for you, too??

A note on the part list: R19-29 should be 20 K max (per Nelson comment) I am using 10K. 68k is too much.

the FDB res can even be 200K and resistor to GND 100 ohms.
5 or 10 pf in the feedback loop should work.

The original IRFP044 should be better here. They have higher transconductance. IRFP140 should work as well.

Bricolo · 26th December 2002, 03:45 PM

would be nice

carpenter · 26th December 2002, 04:36 PM

Hi grataku,

What happens if you run 68k on R19/29?

grataku · 26th December 2002, 08:26 PM

What happens if you parallel a 100 ohm and a 1000 ohm resistors? You can get rid of the 1k ohm because it does almost nothing.

25th December 2002, 06:49 PM	#1
vdi_nenna diyAudio Member Join Date: Oct 2000 Location: PA, USA	Aleph-X parts list Grey and/ or John Inlow, I got the boards yesterday in the mail, thanks John. I do have a question. If I pull down the schematic Grey put out on 5/24/02, will the parts on the schem. match the board's screen? I tried to search for a parts list but found none under Aleph X. Thanks and Merry Christmas, Vince

26th December 2002, 01:03 AM	#3
carpenter Paper mache horn fabricator diyAudio Member Join Date: Mar 2002 Location: Oregon City, Oregon	parts list There's a parts list on the alpha pcb thread that follows Grey's original specs (fairly certain). The latter schematics I posted (same thread) include Grey's follow ups and are not posted in the parts list. If you use the latter schematics you'll need to modify the parts list. The only changes are the two resistors that accompany V2. John

26th December 2002, 04:36 PM	#9
carpenter Paper mache horn fabricator diyAudio Member Join Date: Mar 2002 Location: Oregon City, Oregon	what happens... Hi grataku, What happens if you run 68k on R19/29?

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25th December 2002, 09:20 PM	#2
GRollins diyAudio Member Join Date: Feb 2001 Location: Columbia, SC	Merry Christmas, fella, I never got around to posting a formal parts list...or at least I don't remember doing so. Probably should, I guess. Considering that I've got myself involved in the high-powered Aleph-X dingus, I'll have to dredge around and locate the schematic (the version I posted and the prototype had some differences...). If I can keep my focus, I'll get you up a shopping list. As to what the boards take, I dunno. You'll have to ask the board guys. I'm not sure what path they chose. Grey

26th December 2002, 12:59 PM	#5
vdi_nenna diyAudio Member Join Date: Oct 2000 Location: PA, USA	You guys rule!

26th December 2002, 01:40 PM	#6
Bricolo diyAudio Member Join Date: Nov 2002 Location: Grenoble, FR	the parts price would also be nice

26th December 2002, 03:27 PM	#7
grataku diyAudio Member Join Date: Dec 2000 Location: -	Bricolo should we buy the parts for you, too?? A note on the part list: R19-29 should be 20 K max (per Nelson comment) I am using 10K. 68k is too much. the FDB res can even be 200K and resistor to GND 100 ohms. 5 or 10 pf in the feedback loop should work. The original IRFP044 should be better here. They have higher transconductance. IRFP140 should work as well.

26th December 2002, 03:45 PM	#8
Bricolo diyAudio Member Join Date: Nov 2002 Location: Grenoble, FR	would be nice

26th December 2002, 08:26 PM	#10
grataku diyAudio Member Join Date: Dec 2000 Location: -	What happens if you parallel a 100 ohm and a 1000 ohm resistors? You can get rid of the 1k ohm because it does almost nothing.

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