pass aleph P VS pass X2 first version

perusicchio · 1st March 2004, 04:11 PM

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

stefanobilliani · 1st March 2004, 05:30 PM

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 ?

Asen · 1st March 2004, 07:11 PM

Aleph 3 doesn't have a balanced input. Only Aleph 30 has.

stefanobilliani · 1st March 2004, 07:30 PM

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 .

Bricolo · 1st March 2004, 08:01 PM

or to modify it into the only aleph3 that has balanced inputs

Mark A. Gulbrandsen · 1st March 2004, 09:26 PM

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

perusicchio · 1st March 2004, 11:37 PM

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

BURNER · 4th March 2004, 02:37 AM

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?

acliao · 5th March 2004, 12:46 AM

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?

wuffwaff · 5th March 2004, 10:53 AM

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

1st March 2004, 04:11 PM	#1
perusicchio diyAudio Member Join Date: Feb 2004 Location: rome	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

1st March 2004, 11:37 PM	#7
perusicchio diyAudio Member Join Date: Feb 2004 Location: rome	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

5th March 2004, 10:53 AM	#10
wuffwaff diyAudio Member 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!

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1st March 2004, 05:30 PM	#2
stefanobilliani 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 ?

1st March 2004, 07:11 PM	#3
Asen diyAudio Member Join Date: Jan 2001 Location: Sofia	Aleph 3 doesn't have a balanced input. Only Aleph 30 has.

1st March 2004, 08:01 PM	#5
Bricolo diyAudio Member Join Date: Nov 2002 Location: Grenoble, FR	or to modify it into the only aleph3 that has balanced inputs

1st March 2004, 09:26 PM	#6
Mark A. Gulbrandsen 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

5th March 2004, 12:46 AM	#9
acliao diyAudio Member Join Date: May 2002 Location: Los Angeles, CA	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?

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