Question to multisub enthusiasts. How might a third sub add to SQ in my room?
I have just come across an opportunity to add a local used DD15 at a bargain price Xso this prompts my seeking your advice.
By way of background, I started with one DD10, attracted to the power, accuracy and built-in SMS measurement/EQ system. But I have 3400 cu ft of space with two door-sized openings that don't close. So a second DD10 gave more bass "slam" as well as helping to even out some of the bass lumpiness in this untreated space. I love that the DD series has customizable presets via remote control. I even use a custom preset to compensate for low SACD .1 channel bass (Don't ask-this has to do with my sacd playerneeding to send DSD and my AVR not properly decoding the .1 channel.) I don't EQ using the SMS but rather use Audyssey MultEQXT32 with Pro kit. The subs are EQ'd as a pair, firing simultaneously to account for their interaction with the room. The subs are in opposite front and back midwall placement to smooth the natural bass response of the untreated space. This yields pretty good results. But based on calculated room modes next time I calibrate I'll probably try shifting them over a few feet to opposite 1/4 width points.
The room has a suspended wood floor so when in action movie mode the subs shake the floor pretty impressively though they may well be a bit weak on pressurizing the room. In music mode, bass and kick drum are clean and punchy with a bit of "kick" right in the chest from well-recorded stuff like Steely Dan. But not the shake-yer-guts visceral feel I get standing out in front of my electric bass instrument amp with its 15" JBL speaker or the punch of a live kick drum 8' away.
But what about adding a DD15? Here's some specific questions:
Should I expect a lot more bass slam? The DD15 has the same power as a DD10 but a way bigger speaker.
Should I use a third location? If so, what about gain-matching prior to running EQ?
Or stack two tens acting as one sub on one wall opposite the 15? Combing the tens would perhaps make gain-matching easier?
Other suggestions? Should I instead look to adding two more 10s? Should I resist the upgraditis and enjoy the system as it is?
Edited by SoundofMind - 7/9/13 at 6:46am