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exurbia 14th February 2009 11:24 AM

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.

AndrewT 14th February 2009 11:37 AM

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.

exurbia 14th February 2009 11:45 AM

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

MOER 15th February 2009 06:25 AM

Class D audio
 
This is just them using an IR IRS2092 chip.

exurbia 15th February 2009 07:25 AM

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 ?

MOER 15th February 2009 03:40 PM

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

dudaindc 28th April 2009 03:28 PM

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!

dudaindc 28th April 2009 03:36 PM

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... :confused:

http://classdaudio.com/ vs. http://www.classd.ltd.uk/home.php

dudaindc 28th April 2009 03:51 PM

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

:cannotbe: 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! :up:

cirrus18 2nd May 2009 08:37 PM

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, http://www.diyaudio.com/forums/showt...hreadid=141588


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