What Amp for ESLs?

SM7UYJ · 30th August 2009, 11:24 AM

I've been using a class-A amp(15W) or a GainClone(50W) to drive my ESL-speakers and it has worked well so far.
But I would like to build a more suitable amp as impedace measurements have shown my speakers to be a quite nasty load. Impedance drops to ¨0.3 Ohms at 20kHz and the 3A resp. 6A my amps manage to deliver is a bit on the slim side!

What I¨m looking for is something you could use to weld your car with if you wanted!

Has any one any sugestions or pointers at what designs to study?

/R

SM7UYJ · 1st September 2009, 06:00 AM

No one with pointers?

/R

a.wayne · 1st September 2009, 08:04 AM

You would be better served posting this in the solid state section . What you are looking for is a current amp as oppose to a voltage amplifier .

SM7UYJ · 1st September 2009, 08:48 AM

Yes, I just taught that the builders of ESL-speakers that browse this part of the forum, had experience of what to try and what not to try!

/R

john65b · 1st September 2009, 01:15 PM

How about paralelled gainclones for more current?

If not, the Krell Clone KSA50 would fit the bill nicely

SM7UYJ · 1st September 2009, 01:44 PM

Paralelled Gain Clones has been on my mind for a while actualy!
Posted a question in the Chip Amp section about this but I was advised not to go down that road for a couple of reasons.

I think I'll try it anyway, at least as a test, as I'm going to build some boards with LM3886 for an active x-over experiment.

I'll look into the Krell Clone and perhaps give it a try this winter!

/R

ra7 · 1st September 2009, 02:17 PM

Get a tube amp and use Pass' F4 as the front end to deliver the current. Maybe monoblocked.

ra7 · 1st September 2009, 02:49 PM

i mean put the F4 just before your ESLs, between the amp and the speakers.

30th August 2009, 11:24 AM	#1
SM7UYJ diyAudio Member Join Date: Dec 2004 Location: Staffanstorp	What Amp for ESLs? I've been using a class-A amp(15W) or a GainClone(50W) to drive my ESL-speakers and it has worked well so far. But I would like to build a more suitable amp as impedace measurements have shown my speakers to be a quite nasty load. Impedance drops to ¨0.3 Ohms at 20kHz and the 3A resp. 6A my amps manage to deliver is a bit on the slim side! What I¨m looking for is something you could use to weld your car with if you wanted! Has any one any sugestions or pointers at what designs to study? /R __________________ The probability of someone watching you is proportional to the stupidity of your action. - A. Kindsvater

1st September 2009, 06:00 AM	#2
SM7UYJ diyAudio Member Join Date: Dec 2004 Location: Staffanstorp	No one with pointers? /R __________________ The probability of someone watching you is proportional to the stupidity of your action. - A. Kindsvater

1st September 2009, 08:48 AM	#4
SM7UYJ diyAudio Member Join Date: Dec 2004 Location: Staffanstorp	Yes, I just taught that the builders of ESL-speakers that browse this part of the forum, had experience of what to try and what not to try! /R __________________ The probability of someone watching you is proportional to the stupidity of your action. - A. Kindsvater

1st September 2009, 01:15 PM	#5
john65b diyAudio Member Join Date: Jan 2005 Location: Chicago	How about paralelled gainclones for more current? If not, the Krell Clone KSA50 would fit the bill nicely __________________ Pillage Before You Burn.

1st September 2009, 01:44 PM	#6
SM7UYJ diyAudio Member Join Date: Dec 2004 Location: Staffanstorp	Paralelled Gain Clones has been on my mind for a while actualy! Posted a question in the Chip Amp section about this but I was advised not to go down that road for a couple of reasons. I think I'll try it anyway, at least as a test, as I'm going to build some boards with LM3886 for an active x-over experiment. I'll look into the Krell Clone and perhaps give it a try this winter! /R __________________ The probability of someone watching you is proportional to the stupidity of your action. - A. Kindsvater


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1st September 2009, 08:04 AM	#3
a.wayne diyAudio Member Join Date: May 2008 Location: Front Row Center	You would be better served posting this in the solid state section . What you are looking for is a current amp as oppose to a voltage amplifier .

1st September 2009, 02:17 PM	#7
ra7 diyAudio Member Join Date: Feb 2009 Blog Entries: 1	Get a tube amp and use Pass' F4 as the front end to deliver the current. Maybe monoblocked.

1st September 2009, 02:49 PM	#8
ra7 diyAudio Member Join Date: Feb 2009 Blog Entries: 1	i mean put the F4 just before your ESLs, between the amp and the speakers.

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