Velodyne Digital Drive Series subwoofer in stereo



Hi, I've been very interested in running two subwoofers in stereo (diff. signals to each subwoofer); I've heard many people swear by this setup.

My next room for my system will be 14' x 14' x 18' high ceiling loft living room. My question is, will two DD10 be enough to fill the room with organ music and scare me out of my seat for movie tracks? Should I move up to two DD12s? Money is not really an issue, but I'd like to save wherever I can.

Any help would be appreciated. Thanks,
spacekadet

Showing 5 responses by sailfishben

I owned a DD-12 in a room 18x20x8 with one wall of sliding glass doors. Quite the sub but I replaced it with a DD-18. No comparison (nor should there be because of the cost). The 18" sub is just super with anything I use it for... movies or stereo listening. My thoughts are if your even thinking of two (2x the dollars) get the DD-18. Its increadible. Move it around a bit in the room if you can (have help!), find the sweet spot and then utilize the software to tune it to the room. This is one great subwoofer!

Better yet get two!

By the way... Velodyne has a pass through for a second sub built in to their DD series.
My understanding is low frequency is basically non-directional so I'm wondering what the point is to use it in stereo? I know the sound stage created in my system has plenty of low end response and the low end seems to come from within the soundstage but certainly not from the corner of the room where the sub is actually located.

Wouldn't you have to run the speaker cables to the sub and then to the speakers, creating some long runs not to mention great expense for extra cabling? Although I wonder if you couldn't just use the r/l tape output (assuming they are not used already) letting the sub's crossover do its work on the signal.
I just found this on the Anthem website...

Q20: I have two subwoofers and want to use them in stereo. Can the surround preamp's subwoofer outputs run in stereo?

A: No, although the same job can be done by disabling the sub channel in the setup menu, then hooking up the subs through their own crossovers to the front left and front right channels. This is not recommended because a stereo subwoofer configuration has little value. Few recordings contain real stereo bass info, (e.g. large pipe organ using widely spaced microphones) and unless the subs are located outdoors and away from the ground, they can't reproduce it anyway. Inside a room, running them in mono instead is beneficial because they can be moved to wherever they create the least amount of resonance individually, and as a combination, make each other's response peaks and valleys less severe. As well, a "bass spaciousness" effect can be dialled in with the phase control if it's available on one of the subs (which is what happens when two widely spaced microphones pick up a low frequency source - same long wavelength, different phase between the two).

FYI...
GREAT... so glad you obtain the 15" driver. Simple math tells you it's 50 percent larger, which as Yogi would say, is a lot! Anyway if you stumble on the set up, e-mail me. I'm no installer but... Enjoy!
I'm no professor but it seems to me you can't 'miss' any of the bass if you've summed the two channels through the sub. Its all there, how can you 'miss' any? Has anyone really compared two subs run in stereo to two subs daisey chained together? And can you honestly hear any difference or do you perceive it? I just can't believe there is. A benefit to having two subs though is another matter. I know two different people running two DD-18's in their systems... from what I hear, I want to match my single DD-18 to a sister sub... holy cow! Neither runs their other then daisy chained and both are knowledgable people in the industry.