subwoofer for music?


Hi all

My Speakers are the neat ultimatum mf5 which claims to have specs of

MF5 response @ +/-3dB is 28Hz - 40kHz. The typical - 6dB point in the bass is 22Hz. (from BOB of neat)

Can a 6.5" driver get that low?? Proacs and PMC also have specs that go that low! While speakers with drivers of 12" only gets to 30+hz usually...not sure why

I dont feel a lack of bass from the speakers, but having a sub that can fulfil both role of music/movies and help my system to get down to 20hz will be awesome! (will set the crossover at 35hz or less)

However i will have a subwoofer regardless because i will use it for theater, and the pv1d just does not cut it for movies. So therefore im looking for a sub to be used for music and movies with budget as low as possible.

Will 2 subs help stereo imaging? I would much prefer a single sub for convenience .
Room is 8m(6m usable) x4m. So after reading some info, here are some choices that is within my budget (but i would prefer to spend as little as possible)

-jl audio f113

-twin velodyne spl 1000 ultra

-jl audio f112

-bower wilkin db1

-velodyne dd15 (not plus version)

-twin jl audio f110

-mk 350 mk2

-rel r528

I heard about SVS and KK and paradigm subs, but they are a pain to get in my country

Any help will be appreciated. Thanks all :)
nieveulv
Johnnyb53, you are talking about specific examples, as I did, and not about the general statement. All those variables do apply but each one can be discussed in terms of its contribution.

Designers choose different drivers based on excursion, stiffness, magnets, mass, etc. and depending on the application. When it comes to woofers, larger is not always better but, unless the implementation is incompetent, larger will be capable of louder, deeper and/or more efficient output.
thanks all for the information, it was soo useful. With my budget, i reckon i should get 1 12" instead of 2 10". So ii can buy another 12" as an upgrade instead of changing 2 subs at one :D

Btw the neat mf5s have 2 6.5" drivers in isobaric and not 3. The mf7s are the one with 4 6.5" drivers :)

The neats do go low!!
Neat's own product description says:
The visible main drive unit handles bass and midrange and is isobarically loaded by similar drive units located inside the cabinet.
So if there are isobarically loaded drive units (plural) inside the cabinet, I figure
there must be at least two 6.5" drivers inside the cabinet plus the visible one mounted on the front baffle, for three total. I'm figuring it might be similar to this.

You're probably right to go with a 12", because your towers go so low to start with. You might even consider the Fathom F113 for a deeper and fuller reach.
Why is SVS a pain in your country? SVS only does mail order! What country are you from?
REL is outstanding for music. I used Velodyne also but it was not suitable for music, it's hardness was tiring.