DEQX Mate

Mike, I believe some people do not use the high level imput on the Torus amp when hooking up the Torus and thus do not get ideal performance, but hooked up correctly, it sounds great to my ears. The install instructions are confusing. It is really fast and if you Google it you can find a review by JV where he was using it with a pair of Magico Q1's withsome excellent results. I cross mine over at 48 hz. I have only one unit located exactly between my MBL's.
 
Zagfan, I hope you don't take any offense at my comments, certainly not my intent, only reporting my experiences. Glad you're enjoying your system, and welcome to the forum.

A little quick story, there was a wonderful man lived local to me back in the 80's. Had the great fortune to be a semi regular invite to his home. This gentleman bought the first WAMM system Wilson sold. For those of you not familiar with the WAMM, it had a 61/2' x 3' x 2 1/2' box with a ported 18" Magnat (sp) woofer driven by a ML amp. I've heard more speakers than I could name since then, but I'll never forget the first time I've had my head squeezed like it was in a vice. Can't be described, only experienced :-)

John Abercrombie , Current Events, cut named Clint

 
Raider, Absolutely no offense taken. We are all just trying to learn here. It sounds like Mike has decided he does not need a sub. Just a couple of points about the WB. First, if you are looking for heart thumping base to pressurize your room like a lot of HT followers want, the WB is not for you. However, if you just want to add some nice deep clean base, I think you would be impressed with the WB. I listed to mostly jazz and pop, Stones, etc. When I turn mine off just to hear the difference, I find myself bored with listening in 5 minutes. Mike, I would not pay 11K for one either. If you are interested, I would place a WTB add on the Gon and wait. You shold be able to find one for 6000. They are MUCH harder to BUY than to sell. Unfortunately, it might take a couple of months to buy one. The guy who sold me mine has emailed a couple of times wanting to buy it back.
 
Mike, the go to reviewer on this subject is Robert Greene (REG) at TAS. He also has a website and his own forum, believe its on yahoo's site, Regonaudio

REG has been playing with this digital room/speaker correction devices forever. Be worth it to see what he has to say about the DEQX in particular and the subject in general.
 
looks like he is a fan of DSP. I was very surprised when I heard the new DEQX in action
 
Great call on emailing Robert. He had some great recommendations. He said its likely caused by a floor to ceiling mode.

He suggested, I look at a few products, starting with Rives PARC.


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Still no comment regarding DEQX. That's ok, I'll continue to investigate. Other than this annoying 72-78hz issue, my room is sounding better than ever. Of course, being the OCD audiophile I am, I'm determined to fix this last remaining node. Like Bill Murray in Caddyshack, I will get the little bugger!
http://youtu.be/3lYm0c7gYyU
 
I think REG probably doesn't want to put out any public prejudgements on something he may review in the future. Mike you have a dip or a peak at 72 to 78Hz?
 
annapolis Raider said:
I think REG probably doesn't want to put out any public prejudgements on something he may review in the future. Mike you have a dip or a peak at 72 to 78Hz?
Click to expand...

Peak and it's driving me crazy. Of course, it only shows up on songs which are heavy in those frequencies - examples: Narrow Daylight, Diana Krall and Ballad of the Runaway Horse - Jennifer Warnes. There are others....but those are examples. 9/10 songs aren't an issue, but all of a sudden a song will come on and those bass notes go right around the ASC Tube Traps because according to a friend of mine, those frequencies are 14.5 feet long....whatever the hell that means. He's dead set against tube traps and he might have been right. He's big on multiple subs and DSP to flatten out bad bass peaks in a room. I'm fortunate to have a couple of friends in our audiophile club - one who obsesses over room acoustics and one who is all about DSP and subs. By the way, the guy who is all about room acoustics has come over to the multiple sub/DSP camp.


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DSP is great for taking out peaks like that.... only thing that works, won't be able to tame something like that with room treatment. Put me in the multiple sub camp too. Always tradeoffs......
 
I can't help but chime in here.

I don't think subs are going to help with a troublesome 80hz peak. Combining subs with your Alexias can be done in a couple ways:
1) running the Alexias full range and also running subs with a very low crossover (e.g. 28hz)
2) crossing over the Alexias and sending low frequencies to a sub

#1 has benefits, but don't address the 80hz peak
#2 would require crossing over the Alexias pretty high and I don't think you'd want to do that for obvious reasons

Depending on how high the peak is, you might be able to cure it with tube traps specifically designed for 80hz. This is not that low of a frequency and tube traps should help.

A Rives Parc will definitely cure that peak, but it will rob the midrange and treble of its delicacy. I had a shootout at my house (back when I had Alexias) with the Parc in/out and using a piece with just violin and a harp, the harp sounded different - a bit like piano coming through the Parc. We fuss over cables, electricity and other things to get the most pure signal possible - when you insert something else in the chain it does degrade it. Whether the degradation is a worthy trade-off to get rid of that peak is a fair question. When my Sashas were in my home theater room I had a nasty peak at 80hz and I couldn't listen without the Parc. When I moved my speakers upstairs I didn't have a nasty peak and while I still employed the Parc to try and get bass perfection, it was not worth the sacrifice of signal purity. YMMV.

The best way, in my experience, is to use digital EQ to cure the peak. If you had a CAPS this would be dead easy - JRiver has built in features that are amazingly transparent and you could even do room correction. It wouldn't handle your turntable and it wouldn't handle DSD, but at least for a majority of your listening it would be the best sonic solution (imo). I realize this is somewhat moot because you went the Lumin route, but it still might be helpful for someone else.

Question, Mike: did this peak only manifest since you moved your speakers near the front wall?
 
Quick Question for Mad Floyd ? How do you position your Subs? What alternate positions and crossover points have you tried?
 
This peak has always been there and is measurably the same regardless of position (but I don't have the tools to do a waterfall). It seems shorter the closer the speakers are to the back wall.

What about DSPeaker 2.0?
 
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