Lecson AC1

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Lamb Industries

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Feb 25, 2020, 12:10:55 PM2/25/20
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Hello, newbie here.
I'm an industrial designer which may explain my impulse buy of an AC1.
Now, I'm big into music but no hifi expert. I am a bit lost how to check this amp works and how to get it up and running.
Obviously an AP3 would be nice but it may be a long wait for one of those.
Can I hook this up to something else to check everything works? My current system is Thorens TD150, Cyrus 1, KEF speakers.

If I were to source a quad 303 or similar in the interim would that work with the Lecson? I guess I would need a special lead but I believe someone on here can make those. right? The Lecson didn't come with any cables.

forgive my abject naivety, I'm hoping someone can guide me though the journey to enjoying listening to this thing!

emm...@emmaco.com

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Feb 25, 2020, 12:12:35 PM2/25/20
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Yes, with the right cable you should be able to connect to almost any amplifier.

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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c.gilburt

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Feb 25, 2020, 12:43:55 PM2/25/20
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Hi
 
There are plenty of AP3’s out there. Keep an eye in E-bay they come up very regularly so you shouldn't have to long a wait.
 
Cheers

Pete K

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Feb 25, 2020, 12:51:16 PM2/25/20
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The 8-Pin DIN socket is the main output from the AC1 to a power amplifier, but the Left and Right output signals should also appear on the pins of one of the 5-pin DIN sockets adjacent to that 8-pin. Have a look at the AC1 schematic to see which one.

When I was repairing my own AC1 a few months ago I used a pretty bog standard 5-pin DIN to RCA/Phono lead to monitor the signals and to feed to my oscilloscope and then an Arcam amplifier. 

I bought my AC1 last summer and having been without one since around 1982 I was pleasantly surprised by its sound quality. Back in 1979 to 81 I used my first AC1 to drive the output stage of a Rogers Cadet amplifier, then a Crimson kit power amp and when I sold it the new owner he used it to drive Quad IIs.

Pete K

timhum

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Feb 26, 2020, 3:42:31 AM2/26/20
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I can make you a suitable cable, 8 pin DIN to phonos for example. I am in the UK so if that suits you please get in touch. My email address is timh...@gmail.com
I can also make the 8 pin to 7 pin DIN if that becomes a requirement.
Cheers,
Tim


On Tuesday, 25 February 2020 17:10:55 UTC, Lamb Industries wrote:

Lothar

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Mar 8, 2020, 8:59:30 AM3/8/20
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If you ever need schematics or manual, let me know.

Lothar

Lamb Industries

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Mar 13, 2020, 11:13:21 AM3/13/20
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Hi
Thanks everyone. I sent a reply last week but it didn't appear on the forum. It may be because I included a picture.
My AC1 has a 6 pin plug for the output (do we call them 5 or 6 pin?  It is similar to all of the inputs). Also the remote out next to the pre output is missing... Some one has obviously fiddled with it, perhaps so it can be hooked up to a non-Lecson power amp without a special cable?
Thank you for replying Tim - I may need some cables.
I'm slightly impatient to test it so may source an interim power amp on eBay and try a standard 5/6 pin to phono connector . Is it important to match a power amp input voltage to the 500mV out from the Lecson. Or if it is slightly different just be circumspect with the volume control?

James

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