Class D output impedance

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Tom Martin -- Fri, 09/29/2006 - 11:47

In the TAS class D roundtable, Bruno Putzeys makes the point that well designed class D amps should have pretty consistently low output impedance with frequency. If you know of manufacturers or other sources who have published this data for any class D amp (and a few comparision linear amps), please post their links here.

‹ My experience with D-Amps Class D amps - use them where they are at their best ›

WSLam -- Mon, 10/09/2006 - 05:30

ICEpower has the specs here:
http://www.icepower.bang-olufsen.com/graphics/powerhouse/user_graphics/p...

it does not stay low though.

Bruno Putzeys -- Mon, 10/16/2006 - 04:43

It seems I can't post a graph here but the output impedance of the MP150 is 20 milliohms at 1kHz and below, and slowly (6dB/oct) rises to 70 milliohms at 20kHz.

WSLam -- Mon, 10/16/2006 - 12:56

Bruno, I would love to try the Kharma, but the HK dealer is not importing the Kharma amps?!

Bruno Putzeys -- Mon, 10/16/2006 - 15:13

I'll hear around and will get back to you (it's 10pm here now). I'm the guy with the soldering iron so I don't really follow the sales.

akoinuma -- Tue, 10/17/2006 - 09:26

Bruno Putzeys wrote:It seems I can't post a graph here but the output impedance of the MP150 is 20 milliohms at 1kHz and below, and slowly (6dB/oct) rises to 70 milliohms at 20kHz.

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Bruno Putzeys -- Wed, 10/18/2006 - 02:33

WSLam wrote:Bruno, I would love to try the Kharma, but the HK dealer is not importing the Kharma amps?!
It seems there's currently no HK dealer for Kharma, but this is expected to change soon.

WSLam -- Thu, 11/16/2006 - 11:27

Bruno Putzeys wrote:WSLam wrote:Bruno, I would love to try the Kharma, but the HK dealer is not importing the Kharma amps?!
It seems there's currently no HK dealer for Kharma, but this is expected to change soon.
Hi Bruno, any update on this?

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