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Old 14th February 2009, 11:24 AM   #1
exurbia is offline exurbia  Australia
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Question classDaudio.com

A simple question, maybe?
There is a company selling class d amps on ebay, strangely enough they're called classdaudio.
Has anyone had any experience with the product ?
The pricing appears to be very attractive, especially as our beloved pacific peso is back in the currency toilet.
Cheers,
Peter.
p.s i've bought one already i'm just waiting for it to get here.
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Old 14th February 2009, 11:37 AM   #2
AndrewT is offline AndrewT  Scotland
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there's a couple of threads on these ClassAB amplifiers.

The company ClassD Audio started by designing and making ClassD amps.
They have branched out into these ClassAB designs.
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regards Andrew T.
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Old 14th February 2009, 11:45 AM   #3
exurbia is offline exurbia  Australia
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Hi Andrew,
Thanks for the info, i'll have a look at those.
by the way this is a link to the class D amp on e bay

http://cgi.ebay.com.au/Class-D-Power...1%7C240%3A1318

or the item number 250370798769
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Old 15th February 2009, 06:25 AM   #4
MOER is offline MOER  United States
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Default Class D audio

This is just them using an IR IRS2092 chip.
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Old 15th February 2009, 07:25 AM   #5
exurbia is offline exurbia  Australia
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MOER
Thanks for the info. I've just had a look at the datasheet, IR spec the device as a half bridge. Does this mean if two devices are bridged they then become a full bridge ? With all of the attendant pluses ?
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Old 15th February 2009, 03:40 PM   #6
MOER is offline MOER  United States
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Default IRS2092

Yes the IRS2092 is a half bridge amplifier.

This is a lot of money for a chip which costs less than US$2.00 with a small PCB and some "penny" parts.

We use the IRS20955 in the tens of thousands qty for production and the cost of what you see on Ebay is less tha US$20
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Old 28th April 2009, 03:28 PM   #7
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The website for the manufacturer is this one: http://classdaudio.com/
They will have SMPS available soon according to some info I got today.
Did anybody here try these? I am curious to say the least.
Cheers!
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Old 28th April 2009, 03:36 PM   #8
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Default Re: Class D audio

Quote:
Originally posted by MOER
This is just them using an IR IRS2092 chip.
If by "them" you mean ClassD Audio (a British company), then I think that may not be correct.
These IR-based modules seem to be US made. Who knows...

http://classdaudio.com/ vs. http://www.classd.ltd.uk/home.php
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Old 28th April 2009, 03:51 PM   #9
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Default Re: IRS2092

Quote:
Originally posted by MOER
Yes the IRS2092 is a half bridge amplifier.

This is a lot of money for a chip which costs less than US$2.00 with a small PCB and some "penny" parts.

We use the IRS20955 in the tens of thousands qty for production and the cost of what you see on Ebay is less tha US$20
Thanks for the advice. I will hold on getting one for now...
Do you have any recommendation on a similar module that costs less?

I know... I should build my own, but I need one rather quickly (tested and working) to power my noise source (dodecahedron speaker)

Cheers!
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Old 2nd May 2009, 08:37 PM   #10
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Default Re: classDaudio.com

Quote:
Originally posted by exurbia
A simple question, maybe?
There is a company selling class d amps on ebay, strangely enough they're called classdaudio.
Has anyone had any experience with the product ?
The pricing appears to be very attractive, especially as our beloved pacific peso is back in the currency toilet.
Cheers,
Peter.
p.s i've bought one already i'm just waiting for it to get here.

Been there, seen it, and wearing the T-shirt. See my review here, Mini review: Class-D Designs NX200 vs Hypex
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