What's the difference between original aleph2 and DIY aleph2?

chris910 · 15th August 2003, 04:27 AM

Hi, I am a new one here. There are some questions in my mind.

What's the difference between original aleph2(from Pass Lab ) and DIY aleph2?

For example, as I know,there are 24 mos in aleph 0 of Pass Lab,and we only use 12(half of the number) in DIY works. Would that be dangerous after a long time of using?Maybe unlike original machines,our DIY work will be out of order after 3 or 4 years.

I've finished my DIY aleph2(You can see as below)

http://tw.photo.yahoo.com/chris910.tw/ab4/

My speaker system is B&W M801s3,and aleph 2 seems not to be able to controll the speaker well. I am wondering whether aleph 0 would be better.

wuffwaff · 15th August 2003, 09:48 AM

Hi Chris,

if you´ve build your Aleph2 like the original there shouldn´t be any difference except for the parts you´ve used. (most DIYers tend to choose "better" parts than were in the original amp).

The expected lifespan depends on your personal choise how hot you´ll let it run and can be longer or shorter than the original.....

Did you use 12fets per channel and what bias are you running? For a bit more "control" you could up the ac-current-gain to 60% or so.

william

chris910 · 16th August 2003, 11:40 AM

Dear William

I use 12 FETs(per channel)in my Aleph 2.

I'm wondering the difference because I've a friend who ever exanined the original Aleph2. And he told me about the differences. Because I can't prove if it is true, I hope maybe someone here can tell me more about this, and give some advice to improve my DIY aleph2.

Anyway,much appreciated of your opinions.

Regards

chris

Nelson Pass · 17th August 2003, 09:03 PM

As far as I know, the DIY Aleph 2 is based solely on the
schematic of the original, which did not change over the
product life. It has a total of 12 TO-3 output devices.

15th August 2003, 04:27 AM	#1
chris910 diyAudio Member Join Date: Aug 2003 Location: Taipei	What's the difference between original aleph2 and DIY aleph2? Hi, I am a new one here. There are some questions in my mind. What's the difference between original aleph2(from Pass Lab ) and DIY aleph2? For example, as I know,there are 24 mos in aleph 0 of Pass Lab,and we only use 12(half of the number) in DIY works. Would that be dangerous after a long time of using?Maybe unlike original machines,our DIY work will be out of order after 3 or 4 years. I've finished my DIY aleph2(You can see as below) http://tw.photo.yahoo.com/chris910.tw/ab4/ My speaker system is B&W M801s3,and aleph 2 seems not to be able to controll the speaker well. I am wondering whether aleph 0 would be better.

15th August 2003, 09:48 AM	#2
wuffwaff diyAudio Member Join Date: Aug 2001 Location: Ingolstadt Germany	Hi Chris, if you´ve build your Aleph2 like the original there shouldn´t be any difference except for the parts you´ve used. (most DIYers tend to choose "better" parts than were in the original amp). The expected lifespan depends on your personal choise how hot you´ll let it run and can be longer or shorter than the original..... Did you use 12fets per channel and what bias are you running? For a bit more "control" you could up the ac-current-gain to 60% or so. william __________________ een ooievaar is geen konijn want zijn oren zijn te klein!

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Aleph2 pcb's, matched fets for aleph2 and aleph ono pcb's	MemphisJim	Swap Meet	1	23rd September 2005 07:15 PM
Yet Another Aleph2!	kenny_(00)_	Pass Labs	21	6th July 2003 08:17 PM
Another Aleph2	adusson	Pass Labs	15	21st February 2003 08:03 PM
CL 60 for Aleph2	jeclk	Pass Labs	1	21st October 2002 10:10 PM
need help for an aleph2	ndhennin	Pass Labs	11	2nd August 2002 06:56 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

16th August 2003, 11:40 AM	#3
chris910 diyAudio Member Join Date: Aug 2003 Location: Taipei	Dear William I use 12 FETs(per channel)in my Aleph 2. I'm wondering the difference because I've a friend who ever exanined the original Aleph2. And he told me about the differences. Because I can't prove if it is true, I hope maybe someone here can tell me more about this, and give some advice to improve my DIY aleph2. Anyway,much appreciated of your opinions. Regards chris

17th August 2003, 09:03 PM	#4
Nelson Pass The one and only Join Date: Mar 2001	As far as I know, the DIY Aleph 2 is based solely on the schematic of the original, which did not change over the product life. It has a total of 12 TO-3 output devices.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)