Better to use one big sub or 3 smaller sub? - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 8 Old 01-12-2004, 09:59 AM - Thread Starter
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Is it better to use one M&K MX 5000 sub or three M&K MX 150 ?

Room Size: 17"x13"x8" Const Material: Wood.

http://www.mksound.com/pricegrid1.htm

DVE says many subs are good but difficult to place. Any articles on stuff like these?
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post #2 of 8 Old 01-12-2004, 10:35 AM
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post #3 of 8 Old 01-12-2004, 11:46 AM
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Well, I was going to speculate it would depend on the quality of the sub, but I see you already have that covered. :)
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post #4 of 8 Old 01-12-2004, 12:09 PM
 
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Getting three set up correctly will be a PITA. Use a single or dual (two of the same) subs.

btw one guy upgraded from a M&K 5000 to a dual CS-Ultra package ;-) and reported a huge upgrade in sound.
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post #5 of 8 Old 01-12-2004, 12:51 PM - Thread Starter
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In general is it better to have many subs or one big sub?

I have heard that one MX 5000 sounds better than two MX 350's.

fatbottom,
does that mean CS-Ultra is better? Maybe dual M&K 5000 is better than dual CS-Ultra at 3x cost :).
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post #6 of 8 Old 01-12-2004, 02:10 PM
 
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All depends on room dimensions, placement of one (or both) subs, whether adjustment of phase knob is set accurately, if the subs flattens out or reinforces current room nodes, peaks etc. The second sub will require extensive testing of placement to find the best spot.

There is no set answer. Someone with two subs could have a perfect room- perhaps you don't.. and it will be worse. Expensive mistake.

You will also probably need to use a EQ. That's (at least) twice as much work- plus one sub will interact with the other one and vice versa. A bit like adjusting drive settings on a CRT.. adjust one and it affects the two others.

Well a dual active/passive Ultra package costs (2 PC Ultra) $2200 and (2 CS-Ultra with Samson & EQ) $2100 respectively. The M&K 5000 is $2900.

A single 20-39 active PC Plus at £700 beats a £2100 MX-350 Mark II- a M&K dealer admitted my SVS puts his M&K to shame :-D. You can buy two, with £700 left over for a EQ and DVD's. A single SVS sub beats the single M&K (goes lower, hits harder, and cleaner) so imagine two. :D
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post #7 of 8 Old 01-12-2004, 02:17 PM
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Well, think of it this way too:

A 10" woofer has a surface area of 246 square inches.
A 5" woofer has a surface area of 61.6 square inches.

You'd need 4 5" woofers to get the same surface area as a single 10" woofer!

Furthermore, larger woofers will have larger amps and will likely go to lower frequencies. If you like a lot of "PUNCH" (60-100HZ) then go with more smaller subs. if you want more BASS, get a bigger single sub.

Remember, subs are all about moving air, and the surface area of the sub has a lot to do with that, so all things being equal, it takes 4 subs that have 1/2 the diameter to have the same surface area as one sub, but everything is NOT equal, since the frequency response of the larger sub will likely be very different.
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post #8 of 8 Old 01-12-2004, 02:24 PM
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Xavier,

With the price range you are looking at, I'd suggest also taking a look at the Acoustic Visions Denali (http://www.acoustic-visions.com/~aco...e_denali.shtml). Comes in at less than either the SVS or M&K, and will do anything you ask of it.

All those who believe in psychokinesis, raise my hand.
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