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Room correction - what device works best?

Looking at room correction and all the threads I found seem old. What are the current options for excellent 2 channel sound. Comments on DSpeaker, Lyndorf, DEQX, Audessy, Rives and others welcome. I have option for using in digital domain or putting between pre and amps. Would of course prefer great sound at lower price. Also prefer something that does not take a year of obsessive fiddling to get right. Have a very large family room, so room treatment options limited. Current system is Ayon Cd5s (transport, DAC and pre combined), Nuforce Ref 20 mono amps and Von Schweikert VR55 speakers. Is most of the bang for buck in correcting for room modes or is speaker phase issues also necessary? Eventually in may have subs but not now.
Thnaks
128x128gammajo
lewinskih01
793 posts
 
Al,

Yes, your speakers are truly of fine craftmanship. I've never heard them, but always found them very appealing from what I read.

Are you sure the DEQX can achieve time alignment among the drivers if you are to keep the passive crossovers in there? My understanding is the time alignment is done between pairs of channels, at the crossover points, through linear phase crossovers. Hence the need for actively amping. Maybe DEQX is different, but I think I did exchange with a user about this. At least on Acourate, I know the system can't time align if it only sees two channels as it can't delay part of the signal within a channel. This is why this decision has been so difficult to make. My system will need to change almost completely.
unsound
6,115 posts
 
Al, as usual your points are well taken. The thing is, as I understand it, the <$500 stereo software (sans hardware!) from DIRAC can handle the hi rez stuff.
roscoeiii's avatar
roscoeiii
1,155 posts
 
But is DIRAC computationally doing all that the DEQX is, or is it just a well-implemented digital EQ?
unsound
6,115 posts
 
^
http://www.dirac.se/en/online-store.aspx
roscoeiii's avatar
roscoeiii
1,155 posts
 
To the question of time alignment for speakers with passive crossovers, these quotes from the PreMate review should clarify things. From the Positive Feedback review:

... it corrects for …."the distortion that all speakers make—electro-mechanical devices that they are—and offer room compensation as an added extra. While righting frequency-response errors as other units do, they also uniquely correct critical timing errors by adjusting thousands of frequency groups so that they arrive on time.

"In correcting the speakers—before the room—our comprehensive DEQX-Cal™ software generates correction filters for phase, timing coherence and frequency-response. Only then does DEQX-Cal measure from the listening area for room correction.

"It corrects speaker frequency-response and timing errors by adjusting thousands of frequency groups, depending on your speakers' measure­ments, so that they arrive at the correct time."

Doesn't get much clearer than that.
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