Aleph X and Quad ESL

rsbay · 15th January 2005, 05:59 AM

Hello,

I use now for many years two Zen's for my Stacked Quads. Now I plan
to build an Aleph X with around 100W (+/-22V, 6A) and an Aleph P.

Is the Aleph X the right partner for 2 Quads per channel (parallel or
seriell) and is the power I plan to build enough (or to much) ?

Thanks

Ralph

jacco vermeulen · 18th January 2005, 06:51 AM

I suppose your Quads are the 55's ?

In my view the bare minimum solid state for an ESL63 is 50 watts.
With a single ended output i think you should be aiming for 100.

The ESL63 has the highest phase shift and lowest impedance at frequencies where it needs lots of current.
I would aim for very high bias.

After the Aleph series i am building have completed i am planning to employ a second set of ESL63, as active subwoofers for an extra 3 dB in the low region.

rsbay · 20th January 2005, 04:57 AM

Hello,

you are right, I have 4 of the 57's Quad in a stacked configuration - 2 per
channel. At this moment I have a "Son of Zen" Amp an both speakers at
one channel in a serial connection.

Now I plan to build an Aleph X with around 100W - 12 MOSFET's, +/-22V,
6A. I this this should be enough. Also I want to try to change the
stacked configuration to parallel.

Regards

Ralph

13DoW · 21st January 2005, 10:50 PM

Here are my thoughts on what it takes to drive a pair of ESL 57's - basically 30Vpeak and 6Apeak should be as much as you'll ever need.

Regards
13th Duke of Wymbourne

http://db.audioasylum.com/cgi/m.mpl?...ne&r=&session=

jacco vermeulen · 21st January 2005, 11:35 PM

In parallel the stacked 57's are supposed to go below 1 ohm impedance.
Did you take a look what the Aleph X will deliver at 1 Ohm or less ?

rsbay · 22nd January 2005, 07:58 AM

Hallo,

due to the nice results with my Son of Zen (arround 12W / 4A) I will give
the Aleph X a chance. Even if the parallel operation mode of the stacked
Quad's is not working well I expect that I get better results with the
serial mode.

Regards

Ralph

Nelson Pass · 23rd January 2005, 01:54 AM

The SOZ has such a high output impedance, that it must
attenuate the top end significantly. The X / XA / Aleph X
will all bring significantly more brightness to the sound.

15th January 2005, 05:59 AM	#1
rsbay diyAudio Member Join Date: Apr 2004 Location: Erkelenz	Aleph X and Quad ESL Hello, I use now for many years two Zen's for my Stacked Quads. Now I plan to build an Aleph X with around 100W (+/-22V, 6A) and an Aleph P. Is the Aleph X the right partner for 2 Quads per channel (parallel or seriell) and is the power I plan to build enough (or to much) ? Thanks Ralph

18th January 2005, 06:51 AM	#2
jacco vermeulen diyAudio Member Join Date: Oct 2004 Location: At the sea front, just under Rotterdam	I suppose your Quads are the 55's ? In my view the bare minimum solid state for an ESL63 is 50 watts. With a single ended output i think you should be aiming for 100. The ESL63 has the highest phase shift and lowest impedance at frequencies where it needs lots of current. I would aim for very high bias. After the Aleph series i am building have completed i am planning to employ a second set of ESL63, as active subwoofers for an extra 3 dB in the low region. __________________ Looks like Sponge Bob has killed another thread.

21st January 2005, 11:35 PM	#5
jacco vermeulen diyAudio Member Join Date: Oct 2004 Location: At the sea front, just under Rotterdam	In parallel the stacked 57's are supposed to go below 1 ohm impedance. Did you take a look what the Aleph X will deliver at 1 Ohm or less ? __________________ Looks like Sponge Bob has killed another thread.

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20th January 2005, 04:57 AM	#3
rsbay diyAudio Member Join Date: Apr 2004 Location: Erkelenz	Hello, you are right, I have 4 of the 57's Quad in a stacked configuration - 2 per channel. At this moment I have a "Son of Zen" Amp an both speakers at one channel in a serial connection. Now I plan to build an Aleph X with around 100W - 12 MOSFET's, +/-22V, 6A. I this this should be enough. Also I want to try to change the stacked configuration to parallel. Regards Ralph

21st January 2005, 10:50 PM	#4
13DoW diyAudio Member Join Date: Jan 2002 Location: Orange County, Ca.	Here are my thoughts on what it takes to drive a pair of ESL 57's - basically 30Vpeak and 6Apeak should be as much as you'll ever need. Regards 13th Duke of Wymbourne http://db.audioasylum.com/cgi/m.mpl?...ne&r=&session=

22nd January 2005, 07:58 AM	#6
rsbay diyAudio Member Join Date: Apr 2004 Location: Erkelenz	Hallo, due to the nice results with my Son of Zen (arround 12W / 4A) I will give the Aleph X a chance. Even if the parallel operation mode of the stacked Quad's is not working well I expect that I get better results with the serial mode. Regards Ralph

23rd January 2005, 01:54 AM	#7
Nelson Pass The one and only Join Date: Mar 2001	The SOZ has such a high output impedance, that it must attenuate the top end significantly. The X / XA / Aleph X will all bring significantly more brightness to the sound.

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