inverse response speaker flattening

[Harry Bissell]

Yeah... we have to make a DAC output amp....

But it won't "sound" good unless we use TUBES.....

H^)  lol

Martin Czech wrote:

> Thanks to all who have responded.
> This is still a great list!
>
> http://www.tactaudio.com/
>
> So, digital amps exist and they work.
> But they are still expensive.
>
> Room correction DSPs exist too, see RCS
> on the same site.
>
> Great work, but a bit expensive for me!
>
> m.c.
>
> :::Date: Fri, 12 May 2000 12:53:28 +0200
> :::From: Hallgeir Helland <hhelland at mailandnews.com>
> :::To: Martin Czech <czech at Micronas.Com>
> :::Subject: Re: inverse response speaker flattening
> :::Content-Transfer-Encoding: 7bit
> :::
> :::Hi Martin,
> :::
> :::I have read about some HiFi amp called TacT Millenium.
> :::This is supposed to be a digital amp, making PWM from
> :::a digital input signal, and running this right to the
> :::speakers.
> :::And furthermore they have also made a PC app. where you
> :::can measure the room acoustics and download it into the
> :::amp to equalize the response.
> :::Haven't heard it myself, but the magazine said it was the
> :::greatest since sliced bread. But then again, these guys
> :::only want to sell the stuff. I don't know.
> :::
> :::There's probably a web site on it somewhere.....
> :::
> :::hope this was of some help-
> :::Hallgeir
> :::
> :::Martin Czech wrote:
> :::>
> :::> There is one thing I wonder about:
> :::>
> :::> You have music from digital sources all the way, till power amplifier. It
> :::> would be no problem to ship a little digital in/out box with a measuring
> :::> microphone, so that anyone can measure the frequency response of his room
> :::> and his speakers, the box takes the inverse to filter the CD data. That
> :::> should give an almost ideal response for that single measuring point in
> :::> space and hopefully around it.
> :::>
> :::> Of course, once the speakers are flattened, any personal taste could be
> :::> applied as well (bath tub).
> :::>
> :::> One problem could be that shitty bass chassis could not take the needed
> :::> power...
> :::>
> :::> I have never seen any advertisement for such an apparatus, it seems that
> :::> something like that simply does not exist.
> :::>
> :::> Another question:
> :::>
> :::> In the 70ties people thought about switching amplifiers.
> :::> I.e. DAC amplifiers. The audio chain would be digital up to
> :::> the speakers. Are there any reasonable advances/designs
> :::> today?
> :::>
> :::> m.c.
> :::
> :::--
> :::HELLAND MUSIKK TEKNOLOGI
> :::-=  Hallgeir Helland  =-
> :::hhelland at mailandnews.com