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Need PWM controller for Lacoustics LA-8

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Category: General
Forum Name: Amp Forum
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URL: https://forum.speakerplans.com/forum_posts.asp?TID=102181
Printed Date: 27 March 2026 at 7:15am
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Topic: Need PWM controller for Lacoustics LA-8

Posted By: voron
Subject: Need PWM controller for Lacoustics LA-8
Date Posted: 30 June 2018 at 12:36pm

Hello from Russia! Anybody can help me with purchase PWM preprogmammed controller at90pwm3b-16su for PSU L'Acoustics LA-8 or firmware for this one ? My amp was damaged, PSU IGBT's & drivers were burned; at90pwm3b-16su also was damaged. I have ennough skills & expirience for repair this PSU, problem occured with pwm controller that I can't find anywere ( I understand that firmware is secret of manufacturer) , but maybe anybody have friends in companies that do service of Lacoustics amps... I hope that someone can help me, as I, in turn, help people with the service manual EV zlx.

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Replies:

Posted By: MarjanM
Date Posted: 30 June 2018 at 2:39pm

I think you should contact who ever is Russian distributor for Lacoustics and send the amp to their authorized service.

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Marjan Milosevic
MM-Acoustics
www.mm-acoustics.com
https://www.facebook.com/pages/MM-Acoustics/608901282527713

Posted By: DjLeco
Date Posted: 30 June 2018 at 3:02pm

The best choice!

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I'm A Stupid SMART Romanian...

Posted By: voron
Date Posted: 30 June 2018 at 3:19pm

Local distributor can sell only whole PSU & its price is too much (1660 Euro)

Posted By: voron
Date Posted: 03 October 2018 at 9:06pm

The firmware has been recreated and optimized. Now PSU works fine after repair.

Posted By: Patabouf31
Date Posted: 04 January 2024 at 9:36pm

Hi Voron,

I also had the same problem as you, one of my LA8s.

I find myself in a bind following this PWM at90pwm3b-16su.

Could you tell me how you went about programming this PWM?

Thanks to you

Posted By: voron
Date Posted: 05 January 2024 at 12:56pm

I wrote my own firmware, according algorithms of working PSU. Read PM please for more info.

Posted By: pyqidi
Date Posted: 31 August 2024 at 6:50am

Hi Voron,

One of my LA8 at90pwm3b-16su is broken.

Do you sell your firmware? What is the price?

Thank you

Posted By: voron
Date Posted: 31 August 2024 at 10:52am

I can sell preprogrammed MCU only. But there are some problems with delivery and money transfer, because I'm located in Russia. Where are you from?