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Aleph 3 Upgrade
Aleph 3 Upgrade
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Old 21st April 2018, 07:10 AM   #1
juanitox is online now juanitox  France
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Default Aleph 3 Upgrade

Hi all,
i have a stock aleph 3 in my garage ( still working ) i really love it's look and think of use it again in my main rig for a 8ohm medium/bass driver.
is there a benefit if put my hands on the engine or will it be a "sacrilege"

i was thinking of changing the C power supply with CRC for start.
any other ideas ?

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Last edited by juanitox; 21st April 2018 at 07:13 AM.
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Old 21st April 2018, 07:18 AM   #2
Zen Mod is offline Zen Mod  Serbia
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Aleph 3 Upgrade
just replace all electrolytics with new ones

if you eager to search for some upgrade , look for it elsewhere , not CRC

read Aleph reloaded thread
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Old 21st April 2018, 07:25 AM   #3
coolnose is offline coolnose  Europe
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You could sell me that Aleph as well instead of butchering it...
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Old 21st April 2018, 07:33 AM   #4
Zen Mod is offline Zen Mod  Serbia
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Aleph 3 Upgrade
or just send it to OPLDF

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Old 21st April 2018, 07:37 AM   #5
juanitox is online now juanitox  France
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Quote:
Originally Posted by coolnose View Post
You could sell me that Aleph as well instead of butchering it...
you have no idea , i have killed so many , shame on me

i will replace only stock electrolyte .... for the moment
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Old 21st April 2018, 08:51 AM   #6
juanitox is online now juanitox  France
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thanks to ZM , it's more clear for me now.

1 : changing 22000uf PS caps with 33000uf new ones
2 : changing stock C101 C102 C103 220uf with 470uf 100V Nichicon FG ( my favorite cap for porn) with 10nf mica or MKP bypass cap
3: delete TH1 ( chassis direct to ground)
4: and delete optional Q104

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Last edited by juanitox; 21st April 2018 at 09:09 AM.
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Old 21st April 2018, 08:55 AM   #7
Zen Mod is offline Zen Mod  Serbia
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Aleph 3 Upgrade
if you can obtain Toshiba mosfets for LTP , change them too

of course , you'll need to recheck Iq and offset

I'm doing exactly that routinely , here in OPLDF , prior to tossing them in Da Presssssssssss

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Old 22nd April 2018, 07:48 AM   #8
juanitox is online now juanitox  France
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if i want to go with the Input JFET version ( 2SJ109) , can i use a matched pair of 2SJ74 and in this place what it the correct Idss 6/7ma or more the best ?

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Old 22nd April 2018, 10:29 AM   #9
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preferred current through each JFet is no more than 5mA , so somewhat higher Idss is good to have
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Old 22nd April 2018, 04:32 PM   #10
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There is no thermal compound on those U channels coming from the factory?
Simple enough to do while replacing caps
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