pass aleph P VS pass X2 first version - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs

Pass Labs This forum is dedicated to Pass Labs discussion.

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
Reply
 
Thread Tools Search this Thread
Old 1st March 2004, 03:11 PM   #1
diyAudio Member
 
Join Date: Feb 2004
Location: rome
Default pass aleph P VS pass X2 first version

I have a pre pass X2 first version (single ended version) the pre is connected in single ended in biampling to two aleph3.
The loudspeakers are monitor audio studio 20 CEL. 89 db eff. with the module of impedance is alwais over 6 ohm (20-20000).
But now probably I have the possibilities of an aleph P (I don' t know if first or second version) and so I don't know if with the aleph p the sound would be better.

Thank you for all.
Sandro
  Reply With Quote
Old 1st March 2004, 04:30 PM   #2
diyAudio Member
 
Join Date: Jun 2002
Location: Italy
Hallo Sandro , and welcome on board.

I believe Aleph P 1.7 is a more modest version of the Passlabs Super-Simmetry (tm) circuit that is also inside of the X2 ( and I woluld like to see the X2 in my room ...) . But your post is confusing me: do you mean single ended by the fact that you connected it SE to the Aleph 3 ? Or an X2 is not an X?

Have you tried the balanced connections from the X2 to the Aleph 3 ?
  Reply With Quote
Old 1st March 2004, 06:11 PM   #3
Asen is offline Asen  Bulgaria
diyAudio Member
 
Join Date: Jan 2001
Location: Sofia
Send a message via MSN to Asen
Aleph 3 doesn't have a balanced input. Only Aleph 30 has.
  Reply With Quote
Old 1st March 2004, 06:30 PM   #4
diyAudio Member
 
Join Date: Jun 2002
Location: Italy
Quote:
Originally posted by Asen
Aleph 3 doesn't have a balanced input. Only Aleph 30 has.
OK , Thanks for info.
Then I believe that the beauty of X preamp is lost if the amps hasn't the bal input .

It would be better to modify the Aleph 3 into a 30 .
  Reply With Quote
Old 1st March 2004, 07:01 PM   #5
Bricolo is offline Bricolo  France
diyAudio Member
 
Bricolo's Avatar
 
Join Date: Nov 2002
Location: Grenoble, FR
or to modify it into the only aleph3 that has balanced inputs
  Reply With Quote
Old 1st March 2004, 08:26 PM   #6
diyAudio Member
 
Join Date: Sep 2001
Location: Salt Lake City
Yes, A friend is building an Aleph 3 and we're going to give it balanced inputs as well as the unbalanced inputs. Same as any of the other Alephs.

Mark
  Reply With Quote
Old 1st March 2004, 10:37 PM   #7
diyAudio Member
 
Join Date: Feb 2004
Location: rome
Default pass x2 VS aleph p

Sorry for my english that is non very good.
I said that my pass X2 is the first version and so it isn't the circuit super simmetry but is a single ended class A (like aleph P)
I don't know how is pass aleph p is better of my version of the pass X2 first version.
Thank You Sandro
  Reply With Quote
Old 4th March 2004, 01:37 AM   #8
BURNER is offline BURNER  Thailand
diyAudio Member
 
Join Date: Nov 2003
Location: Bangkok
I'm not sure that R48 and R63 (221K) in Aleph P1.7 could do a job for Su-Sy operation or they are simply feedback resistors?

Any idea?
Attached Images
File Type: jpg alephp17.jpg (18.7 KB, 743 views)
  Reply With Quote
Old 4th March 2004, 11:46 PM   #9
diyAudio Member
 
Join Date: May 2002
Location: Los Angeles, CA
Send a message via ICQ to acliao Send a message via AIM to acliao
I am curious on the above schematic also if P1.7 can be converted into X-P1.7. Can any experts out there give some feedbacks?
  Reply With Quote
Old 5th March 2004, 09:53 AM   #10
diyAudio Member
 
wuffwaff's Avatar
 
Join Date: Aug 2001
Location: Ingolstadt Germany
Acliao,

just look at the X-BOSOZ thread and see how to convert it into an X.
You only have to ad the 4 feedback resistors and connect the sources directly.
See also the latest project on Passdiy.com.

William
__________________
een ooievaar is geen konijn want zijn oren zijn te klein!
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
DIY Low Pass and Mid/High Pass (Bass Blocking) Filters runslikealpaca Everything Else 1 19th June 2009 10:59 PM
Paging Mr. Pass, Mr. Pass pull my finger please. khundude Pass Labs 2 5th December 2008 04:11 AM
Pass Tharagard A75 vs Pass Aleph 1.2's daly41k Pass Labs 7 18th February 2007 03:10 PM
second Pass Aleph 0 version, of fake ? steve_pinkcity Pass Labs 8 11th October 2005 02:30 PM
Pass version of Citation 12 (Mosfet) G Solid State 13 10th November 2002 03:18 AM


New To Site? Need Help?

All times are GMT. The time now is 01:18 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2