I truly don't understand the argument about a sub being better at Music versus Better for Movies? This has always confounded me. Don't most movies have Music in them and professionally composed Music? Heck I love Movie musical soundtracks! Some times they are better than the Movie itself...
I'm just going to toss out some FR data about Musical Instruments. Just for a general guide. Lets get on the same Frequency shall we?
(just joking here)
Male voice: A good bass can produce a strong D2 at 73.4Hz,
but most energy lies two-four octaves above this, due to the resonant structure of the throat, mouth and nasal cavity.
Cello: C on the bottom string (C2) is 65.4Hz.
Double-bass: Most orchestral basses these days can reach low C3, 32.7Hz,
but the jazz-bass limit is the low E3 at 41.2Hz
Fender Bass: Limit is also 41.2Hz
, but most of the energy is at the 2nd harmonic, 82.4Hz
Bassoon: Like all reeds, very little energy at the fundamental, which reaches around 58Hz
. Olsen measured the fundamental of a 98Hz
bassoon tone as being 20dB lower in level than the 7th at 686Hz, which was the highest.
Contrabassoon: The depths plunged by this leviathan reach around 29Hz
---a beautiful sound.
B-Flat Bass Clarinet: Low E (actually D2) is a beautifully plummy 73.4Hz.
(The very rare contrabass clarinet plummets an octave lower to 36.7Hz
Organ: Commonly 25-32Hz
; very occasionally 16.35Hz
(but a reed stop with very little energy at this frequency).
Bass Trombone: With the slide all the way out, can produce a fart of a G-Flat4 around 23Hz.
Tuba: The fat man of the orchestra and wind band reaches F4, two tones below a standard concert grand.
Grand Piano: Standard concert grand goes down to A4 at 27.5Hz;
the big Bosendorfers subtract ten or so Hz from this.
Kick Drum: Produces a broad span of frequencies with very high energy between 30 and 80Hz
. (Live levels can reach 127dB, equivalent to 25 acoustic watts, or a typical box loudspeaker being driven by a 3kW amplifier!) Rock and jazz bass-drum output tends to have a higher frequency range than the orchestral bass drum.
Timpani: Energy tends to be centered in the upper-bass and lower-midrange, between 75Hz and 200Hz
Here is a table of Frequency range data by Instrument. About 3/4 of a page down in this link: http://www.zytrax.com/tech/audio/audio.html
A Sub is just a specialized Speaker. Whether you are listening to Music or a Movie. It can either reproduce said frequency at a specific DB level or not. I am by no means an expert here and I am not saying any sub is better or worse than the other. But is not a note at 30Hz, and a sound at 30hz still basically the same? Be it a gunshot or a Grand Piano A note. Its all sound waves right.
Here is my thinking. One should look for a Sub that will compliment the Main Speakers it will be paired with. To fill in where the mains fail to dig down to.
ULF may be rare, and more prevalent in Movies and such. But it is present in musical instruments as well. There are some Massive Organs that can go down to a C−2 @ 4Hz
Heck just look at the "Instruments" chart above and you can see many instruments go down to 20Hz and lower.