Mini Aleph

happyboy · 20th September 2006, 04:00 AM

hello, i would like to build a Aleph-mini but i dun know which circuit to start with. i searched the forum and it came up with a few results but i am not sure which one to go with. could someone kindly refer me to a Aleph-mini circuit? Thanks!

Zen Mod · 20th September 2006, 09:52 AM

Grey's first version is good enough

happyboy · 20th September 2006, 09:58 AM

is this the circuit?

The Mini-A

i am planning to build this circuit on veroboard because its pretty simple but is there anything i must take note of when arranging the components on the veroboard? Thanks!

Zen Mod · 20th September 2006, 10:22 AM

yup
that's that

regarding physical layout- look for some nice pcbs of Alephs ( no matter what particular Aleph version,they mostly same stuff) and think-rethink.

with observing things you can learn much;

try to use mentioned input mosfets ,say, 9510 or 9610 ,even ZV (ZVP ?? dunno exactly) iterations (look for BillWW's mini aleph-he does pretty nice implementations of smaller mosfets in input LTP) ;

for output mosfets use cheapest you can buy;
you can hardly hear difference if you stay in mini boundaries.

even IRF 540 and 640 are good enough
tip-weaker mosfets-usually less gate capacitance-easier to drive

GRollins · 20th September 2006, 11:51 PM

As far as I know, the Mini-A was the first small Aleph, although I've since seen variations on the theme. I've not built any of the others and have no opinion as to whether they're better or worse than the Mini-A.
There are things I'd do differently if I were to start the project today, but that's life. I've got a few ideas for variations that I'd like to try. I've got several of the things sitting around, including one running an old pair of Braun L810s in the living room. It's a 'normal' Mini-A built with junk box parts, though--not a research version.
If my life ever calms down, I'm going to revisit the small amp concept and see what happens. For the moment, what little spare time I can scrape up goes towards Lovoltech power JFET circuits.

Grey

happyboy · 21st September 2006, 04:22 AM

thx guys for your inputs! anw, what do you guys think of how the mini-A sounds?

jleaman · 21st September 2006, 05:42 AM

I think brian or i might have some boards left over of the Aleph mini's..

happyboy · 21st September 2006, 05:57 AM

hey! are they the through hole type?

jleaman · 21st September 2006, 06:07 AM

Quote:

Originally posted by happyboy
hey! are they the through hole type?

2 Types through hole and smd

Jase

happyboy · 21st September 2006, 06:17 AM

jleaman, you've got mail (:

20th September 2006, 04:00 AM	#1
happyboy diyAudio Member Join Date: Jul 2004 Location: -	Mini Aleph hello, i would like to build a Aleph-mini but i dun know which circuit to start with. i searched the forum and it came up with a few results but i am not sure which one to go with. could someone kindly refer me to a Aleph-mini circuit? Thanks!

20th September 2006, 09:52 AM	#2
Zen Mod diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	Grey's first version is good enough __________________ my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; Mighty ZM's Bloggg;I'm dumb

20th September 2006, 10:22 AM	#4
Zen Mod diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	yup that's that regarding physical layout- look for some nice pcbs of Alephs ( no matter what particular Aleph version,they mostly same stuff) and think-rethink. with observing things you can learn much; try to use mentioned input mosfets ,say, 9510 or 9610 ,even ZV (ZVP ?? dunno exactly) iterations (look for BillWW's mini aleph-he does pretty nice implementations of smaller mosfets in input LTP) ; for output mosfets use cheapest you can buy; you can hardly hear difference if you stay in mini boundaries. even IRF 540 and 640 are good enough tip-weaker mosfets-usually less gate capacitance-easier to drive __________________ my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; Mighty ZM's Bloggg;I'm dumb

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20th September 2006, 09:58 AM	#3
happyboy diyAudio Member Join Date: Jul 2004 Location: -	is this the circuit? The Mini-A i am planning to build this circuit on veroboard because its pretty simple but is there anything i must take note of when arranging the components on the veroboard? Thanks!

20th September 2006, 11:51 PM	#5
GRollins diyAudio Member Join Date: Feb 2001 Location: Columbia, SC	As far as I know, the Mini-A was the first small Aleph, although I've since seen variations on the theme. I've not built any of the others and have no opinion as to whether they're better or worse than the Mini-A. There are things I'd do differently if I were to start the project today, but that's life. I've got a few ideas for variations that I'd like to try. I've got several of the things sitting around, including one running an old pair of Braun L810s in the living room. It's a 'normal' Mini-A built with junk box parts, though--not a research version. If my life ever calms down, I'm going to revisit the small amp concept and see what happens. For the moment, what little spare time I can scrape up goes towards Lovoltech power JFET circuits. Grey

21st September 2006, 04:22 AM	#6
happyboy diyAudio Member Join Date: Jul 2004 Location: -	thx guys for your inputs! anw, what do you guys think of how the mini-A sounds?

21st September 2006, 05:42 AM	#7
jleaman Banned Join Date: Apr 2002	I think brian or i might have some boards left over of the Aleph mini's..

21st September 2006, 05:57 AM	#8
happyboy diyAudio Member Join Date: Jul 2004 Location: -	hey! are they the through hole type?

21st September 2006, 06:17 AM	#10
happyboy diyAudio Member Join Date: Jul 2004 Location: -	jleaman, you've got mail (:

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