Pass Design to Drive ESLs?

Karl71 · 18th July 2008, 04:04 AM

Nelson -

Any suggestions as to which of your designs would drive a pair of Just Real Music Model .5 ESL panels? They spec at 2.5 Ohms min. at 12 Khz and have a nominal 6 Ohm impedence. I will cross over at 375 Hz to a 10" Seas 25F-EW woofer (Dynaco A-25 replacement). According to the builder, the sensitivity is ~ 86dB.

Of course, simpler the better. I have a 680 VA toroid with dual 30V, 10A sec.

Thanks,

Karl Lewis

PixelPlay · 18th July 2008, 05:06 AM

I have a pair of DIY aleph 2's running a set of ESL's (eraudio acorns) and I love them.

vitalstates · 18th July 2008, 07:36 AM

This question seems to have been asked many times in the past. try a search for 'amp for esl' or something similar in the pass forum.

here are a couple of examples

Aleph mods for quad 57?

Pass Amps and ESL speakers

I don't think its optimal but fwiw I sometimes drive my ESLs(eraudio ESLlll) with my F4, its gloriously musical even though it might be cosidered a budget approach, both from cost and power perspectives.

regards

Ed

thinkbad · 19th July 2008, 04:39 AM

The A75 can cope with low impedance loads and that is what Pass recommends for ESL`s

JB

thinkbad · 19th July 2008, 04:41 AM

Pass Amps for Martin Logans

Nelson Pass · 19th July 2008, 09:31 PM

The XA.5 series is the most ideal at this point, but as a DIY, the A75
is your best best, I think.

18th July 2008, 04:04 AM	#1
Karl71 diyAudio Member Join Date: Mar 2007	Pass Design to Drive ESLs? Nelson - Any suggestions as to which of your designs would drive a pair of Just Real Music Model .5 ESL panels? They spec at 2.5 Ohms min. at 12 Khz and have a nominal 6 Ohm impedence. I will cross over at 375 Hz to a 10" Seas 25F-EW woofer (Dynaco A-25 replacement). According to the builder, the sensitivity is ~ 86dB. Of course, simpler the better. I have a 680 VA toroid with dual 30V, 10A sec. Thanks, Karl Lewis

18th July 2008, 05:06 AM	#2
PixelPlay diyAudio Member Join Date: Jan 2007 Location: Melbourne, Australia	I have a pair of DIY aleph 2's running a set of ESL's (eraudio acorns) and I love them. __________________ "Live each day as if it is your last"

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18th July 2008, 07:36 AM	#3
vitalstates diyAudio Member Join Date: Jan 2006 Location: uk	This question seems to have been asked many times in the past. try a search for 'amp for esl' or something similar in the pass forum. here are a couple of examples Aleph mods for quad 57? Pass Amps and ESL speakers I don't think its optimal but fwiw I sometimes drive my ESLs(eraudio ESLlll) with my F4, its gloriously musical even though it might be cosidered a budget approach, both from cost and power perspectives. regards Ed

19th July 2008, 04:39 AM	#4
thinkbad diyAudio Member Join Date: Sep 2004 Location: in the middle of nowhere	The A75 can cope with low impedance loads and that is what Pass recommends for ESL`s JB

19th July 2008, 04:41 AM	#5
thinkbad diyAudio Member Join Date: Sep 2004 Location: in the middle of nowhere	Pass Amps for Martin Logans

19th July 2008, 09:31 PM	#6
Nelson Pass The one and only Join Date: Mar 2001	The XA.5 series is the most ideal at this point, but as a DIY, the A75 is your best best, I think.

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