Anti-Node: Active Room-Acoustics Correction

Anti-Node: Active Room-Acoustics Correction

Recently, I assessed four disparate room-correction systems based on digital signal processing (DSP): Copland DRC205, Lyngdorf Audio RoomPerfect, <A HREF="http://www.stereophile.com/musicintheround/1105mitr">Velodyne SMS-1</A>, and <A HREF="http://www.stereophile.com/musicintheround/706mitr">Meridian DRC</A>. I concluded that Meridian's approach&mdash;which applies IIR (Infinite Impulse Response) "anti-resonance" filters to suppress room resonant modes, if only partially&mdash;was, in many respects, the best. What I particularly like about Meridian DRC is that, unlike the Copland and Lyngdorf processors, its approach to system tonal balance is largely hands-off. Yes, it lightens up the extreme bass a little, as you'd expect, but it doesn't recast the system balance in any way that might prove undesirable. If you like your system's tonal character as it is, Meridian DRC behaves just as you'd want a room-correction system to behave: it quells room resonance effects while leaving the system's essential sound well alone.

Where's the Music Reviews What's happening to our hobby??

What is going on at Stereophile? The latest issue only had ONE cd review, the Recording of the Month. Cmon folks! This whole hobby is ABOUT MUSIC, not equipment. Funny/sad how the US industry pushes and pushes newer and more expensive equipment...compare this to Europe or Asia where music plays a much larger role in audio rags.

We can do better!

Recording of May 1992: P.D.Q. Bach: WTWP Classical Talkity-Talk Radio

Recording of May 1992: P.D.Q. Bach: WTWP Classical Talkity-Talk Radio

<B>P.D.Q. BACH: <I>WTWP Classical Talkity-Talk Radio</I></B><BR>
Prof. Peter Schickele and the Usual Cast of Clowns; many instruments, some of which you'll recognize<BR>
Telarc CD-80295 (CD only, as if we had to tell you that). Robert Woods, Elaine Martone, prods.; Jack Renner, Michael Bishop, engs. DDD (as if we had to tell you that, too). TT: 61:39

B&W 603 S3 verses Avalon NP 2.0

Guys,
I recently purchased a pair of 603 7 months ago to accompany the Rotel integrated amp and cd combo along with MIT cables. I've never heard the NP but I have heard the Ascents 10 years ago and loved the depth and its holograhic
imaging. I'm sure the 603's are pale in comparason the the NP's. Any advice before I sell them with less than 100 hours
on them?

Thanks,
Wig

Coming soon, 7A Line Preamplifier

Within the next month, I will be introducing a new preamplifier I call the 7A. It will be priced for the general market, feature 3 inputs and one output. However, one can request additional inputs, HTC bypass, reduced gain for each one input or all, etc.
The 7A will use Cardas Rhodium Jacks, silver contact switches, Jenalabs wire in the signal path etc.

Specs.

Moving Coil Step-Up Transformer for Denon 103?

Moved this question here from the Entry thread... you'll still think me an idiot for asking this, but: What the heck does a step-up transformer do? Why use the step-up trannie in addition to phono stage? Can somebody explain to me what might be the optimal situation in which step-up transformer is used? I'm trying to tread through the dark waters of vinyl (Got my Fremer DVD in the mail, hooray!) and it's fun & confusing at the same time.

So, if you don't have a phono stage already, you can't use step-up transformers at all, right?

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