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From what I understand that null is ubiquitous in small rooms and about impossible to get rid of without more subs.
And the 'after' waterfall to the right exemplifies why the Dual Core is so good. It's seen the obvious peak and cut it. It's seen the extended decay of the dip and not chosen to boost. Boosting a dip isn't generally recommended, because you're effectively pouring amplifier power and driver travel into a sonic black hole, but that is a rule of thumb. It can be done in moderation and the Anti-Mode allows it, although you can also set the limit of how much is allowed. If you flick back and forth between the before/after graphs, there is a hint of boost between 20-25Hz to bring the response gently into line. Remember too, that this result is just the result of the entirely PC free, automated EQ of the Anti-Mode. For music in my room, that's job done - walk away.[/b]
Looks like trying to get rid of these little nulls is a bad idea.Tim had told me this a while back before the review came out.Rclark- You have a very good sub ...why not try the the Dual Core on just the one sub and see how the room responds?Perhaps there is no seed to spend a lot of cash on multiple subs? Dunno it's your call!There is a lot of written theory supporting the use of multiple subs for proper in room bass. The guys at Dspeaker understood this and designed a product that will get you there without having to spend a small fortune on more subs, cables, and the time it takes to dial them in. It may cost more than using Mini DSP and REW. But hey, I sold my preamp and dac which covered the cost of the Dual Core.It is now my preamp, dac, and room correction device all in one neat little box.Me likey that!
What has been overlooked in the thread so far is the fact that the Dspeaker Dual Core is being used to solve the same bass problem that occurs with a pair of full range loudspeakers. In light of the results so far the Dspeaker Dual Core could be highly recommended to owners of full range loudspeakers who wish to tame bass problems without buying room treatments. The observed nulls related to the rooms Schroeder frequency might be reduced or eliminated entirely if one of the subs was relocated to the center of the back wall and operated out phase in combination with the equalization from the Dspeaker. Obviously this is not an option with a pair of fullrange loudspeakers. Scotty[/quote
What has been overlooked in the thread so far is the fact that the Dspeaker Dual Core is being used to solve the same bass problem that occurs with a pair of full range loudspeakers. In light of the results so far the Dspeaker Dual Core could be highly recommended to owners of full range loudspeakers who wish to tame bass problems without buying room treatments. The observed nulls related to the rooms Schroeder frequency might be reduced or eliminated entirely if one of the subs was relocated to the center of the back wall and operated out phase in combination with the equalization from the Dspeaker. Obviously this is not an option with a pair of fullrange loudspeakers. Scotty
Hi roscoeiii,I did a search and went to here http://radioproshop.com/pyramid-ps/powersupply.htm.There are a lot of Pyramid PSU's...could you narrow it down a little for us?
I have read through the thread and some of this is over my head. As one who has not used any kind of electronic room eq at this point (modest, but effective room treatments only), I am now at a point where I want to add a sub to my system, maybe two, and I have a question about the prudent path to take re room eq. With respect to using other kinds of room eq such as Audyssey, ARC, MAAC, etc., is the Dspeaker Core an either / or proposition, or both / and? Thanks.
