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Old 29th January 2010, 12:32 PM   #1
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Join Date: Oct 2005
Default Preamlifier for Aleph 3

Which preamp for Aleph 3 is better?

Where I can download Aleph L service manual? I need Aleph L schematic. On Pass Laboratories - Manufacturer of high end audio equipment. I found user manual only


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Old 29th January 2010, 01:04 PM   #2
Join Date: Oct 2005
Location: Central Florida
Use the search function, Dimo. I have the P 1.7 if you would like it.

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Old 29th January 2010, 02:00 PM   #3
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Originally Posted by Bill Fuss View Post
Use the search function, Dimo. I have the P 1.7 if you would like it.

I know that P 1.7 is nice, but it is balanced. How i can make it unbalanced input and output?
I serched, but I couldn't find an answer in this forum.

thank you!
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Old 29th January 2010, 02:19 PM   #4
Zen Mod is offline Zen Mod  Serbia
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Location: ancient Batsch , behind Iron Curtain
with grounding negative leg of input ( or output)
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
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Old 29th January 2010, 02:35 PM   #5
mach.88 is offline mach.88  Germany
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To use the Aleph P input with single ended signal, you shall ground Pin 3 (inverted phase) to Pin 1 (GND).

The output can be left as is. Use Pin 2 and GND for your RCA socket and connect it to your Aleph 3.

There is no need to ground the inverted output of the P.
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Old 29th January 2010, 02:44 PM   #6
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Thank you all!!!
You are very polite!
But is there any big difference in the quality between Aleph L and Aleph P1.7.
Could You please send me The scheme and service manual for Aleph L.
My e-mail:


Last edited by dimovdid; 29th January 2010 at 02:47 PM.
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