RE: Digest for lecson-audio@googlegroups.com - 1 update in 1 topic

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Robert Marshall

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Dec 20, 2020, 6:40:12 PM12/20/20
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Having never heard/seen/been aware that an AP4 incarnation existed ….. were they any good, and if so, why did the design not make it?

 

RM

 

From: lecson...@googlegroups.com <lecson...@googlegroups.com>
Sent: 20 December 2020 17:42
To: Digest recipients <lecson...@googlegroups.com>
Subject: Digest for lecson...@googlegroups.com - 1 update in 1 topic

 

"PK" <pmk...@btinternet.com>: Dec 19 07:23PM

I know how the owner feels. It took me two goes to decide to sell my Threshold CAS2
 

 
PK
 

 

 

 
From: lecson...@googlegroups.com [mailto:lecson...@googlegroups.com] On Behalf Of Graham Pound
Sent: 19 December 2020 17:10
To: Lecson Audio
Subject: Re: Pair of Lecson AP4 for sell on Ebay - On collection only in Scotland..
 

 
The seller told me he had decided to keep them... but maybe he got an offer he couldn't refuse.
 
One day I'll get a pair. One day...
 

 
On Sat, 19 Dec 2020 at 16:45, 'PK' via Lecson Audio <lecson...@googlegroups.com> wrote:
 
I see those AP4s finished on ebay, I assume they finished early.
 

 
Has anybody built a pair using the magazine design? I'm rebuilding my AP2 at the moment with new boards from JLC in China but a pair of AP4s might be a nice backburner project in a couple of years' time
 

 
PK
 

 

 

 
From: lecson...@googlegroups.com [mailto:lecson...@googlegroups.com] On Behalf Of Graham Pound
Sent: 16 December 2020 09:52
To: Lecson Audio
Subject: Re: Pair of Lecson AP4 for sell on Ebay - On collection only in Scotland..
 

 
Ah ok, that's what I was thinking of then :)
 

 
On Wed, 16 Dec 2020, 09:46 Stan Curtis, <ma...@stancurtis.com> wrote:
 
No the three pairs were in my home system which disappeared over the years
 
Stan
 

 
From: lecson...@googlegroups.com [mailto:lecson...@googlegroups.com] On Behalf Of Graham Pound
Sent: 15 December 2020 20:28
To: Lecson Audio <lecson...@googlegroups.com>
Subject: Re: Pair of Lecson AP4 for sell on Ebay - On collection only in Scotland..
 

 
I had read it was just three pairs...
 

 
On Tue, 15 Dec 2020, 19:08 Stan Curtis, <ma...@stancurtis.com> wrote:
 
I believe about 20 pairs. More were built later as Jeremiah Braithwaite Class As. I’ve had contact with some owners to advise on upgrades but they don’t tend to part with them so this pair really is a rarity
 

 
Stan
 

 

 
From: lecson...@googlegroups.com [mailto:lecson...@googlegroups.com] On Behalf Of John Mayberry
Sent: 15 December 2020 18:11
To: lecson...@googlegroups.com
Subject: RE: Pair of Lecson AP4 for sell on Ebay - On collection only in Scotland..
 

 
Just out of curiosity, how many AP4’s were built? I assumed it was only a handful.
 
John
 

 
From: lecson...@googlegroups.com <lecson...@googlegroups.com> On Behalf Of Stan Curtis
Sent: Tuesday, December 15, 2020 2:33 AM
To: lecson...@googlegroups.com
Subject: RE: Pair of Lecson AP4 for sell on Ebay - On collection only in Scotland..
 

 
Well I never.
 

 
I never thought I’d ever see a pair of those on sale
 

 
Stan
 

 
From: lecson...@googlegroups.com [mailto:lecson...@googlegroups.com] On Behalf Of John Mayberry
Sent: 14 December 2020 18:32
To: lecson...@googlegroups.com
Subject: RE: Pair of Lecson AP4 for sell on Ebay - On collection only in Scotland..
 

 
Oh My!
 
Good luck with the sale… Please let me know how it went!
 
John
 
John Mayberry
 
VP, Engineering
 
Emmaco, Inc.
 
3788 Kelton Drive
 
Oceanside, CA 92056
 
(626) 799-9993 p
(626) 394-3954 m
 
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From: lecson...@googlegroups.com <lecson...@googlegroups.com> On Behalf Of Stephane Gormand
Sent: Sunday, December 13, 2020 11:44 AM
To: Lecson Audio <lecson...@googlegroups.com>
Subject: Pair of Lecson AP4 for sell on Ebay - On collection only in Scotland..
 

 
 
Santa exists..
 
https://www.ebay.fr/itm/lecson-ap4-power-amplifiers-pair-extremely-rare-only-know-pair-in-uk/193800389361
 
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PK

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Dec 21, 2020, 12:58:13 PM12/21/20
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I'm guessing the AP4 was the right product at the wrong time. People probably didn't have the cash for such a niche item and the real audiophile bubble was only just growing. Looking at all that black finned aluminium it must have been expensive to manufacture so the retail price would  have been very high for the time. Lecson never appeared to be well financed so there must have been little scope to go all-out on a worldwide marketing spree, nor just to roll the dice and bulk buy components to bring unit costs down.

 

It appears to be a well respected amplifier among those who know, so I assume it's very good.

 

It's well worth a DIY build I reckon, just as a backburner project. On that basis second hand heatsinks and other case parts can be sourced via ebay over a few months when people do offer them. Low cost 'silent' PC fans could be used to boost cooling while reducing the heatsink costs - a small amount of forced air movement increases heat dissipation by an astonishing amount. I think I'd build in one of those ready-build speaker protection boards just in case, but with a proper relay instead of the usual no-name or Omron copy device.

 

PK

Stan Curtis

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Dec 21, 2020, 1:59:49 PM12/21/20
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At the time the prototypes were built the AP4 was one of a handful of “Super Amps” the others being the Crown DC300A and the Phase Linear PL700.

It was outstanding at the time better than the Crown & the Phase Linear; which amps I used as references. They were better suited for band PA systems where they had great success.  That said the Class A could be improved particularly in terms of construction and I had a list of changes built up within a couple of years.

 

It was the wrong time and Lecson had no money so I financed the build of the AP4s rather than Singhania but before the amp could get established Lecson had crashed.  As I recall in its short life the Class A did particularly well in Germany.

 

I loved the sound.  At the time it seemed to have just effortless reserves of power.

 

Stan

nick banks

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Dec 21, 2020, 4:01:26 PM12/21/20
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Just wondering, how did it compare sonically to the AP3 Mk2.
Was it a little better or was it a lot more than that?!
Listening to IMF TLS80 mkii right now and recently Gale GS401a alternating between the AP3 mk2 and, believe it or not, Leak TL50+ mono valve amps and either one is right at the top for me and I have heard most of the other super amps of the the day and today.
Thanks.
Nick


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