Aesthetically the max size subs I can afford are about the size of Marty Cubes.
Price wise for passive cabinets my price for the 2 subs is ~$1,200, before amplification.
Other considerations;
Room size is about 3,400 cu. ft. (sorry, meant cubic feet not square feet)
My mains include 2 OB Servo subs which are good for music to about 20hz and HT SFX ~25-30hz.
Main freq range for new subs is up to 50hz.
My current consideration is Ultimax 18" in either a Marty Cube or sealed cabinet.
I will use some form of equalization. Currently have Crown XTI 2002 (built in EQ) driving a pair of down firing Dayton 10" Titanics in sealed enclosures.
So with the limiting factors of size & price and a focus on rather low frequencies, what is my best choice for a pair of Passive HT subs?
I am not opposed to other designs, like dual opposed 15s, or anything else which will maximize my low frequencies with decent SQ. As Mae West used to say, "Too much of a good thing (bass) is never enough."
Price wise for passive cabinets my price for the 2 subs is ~$1,200, before amplification.
Other considerations;
Room size is about 3,400 cu. ft. (sorry, meant cubic feet not square feet)
My mains include 2 OB Servo subs which are good for music to about 20hz and HT SFX ~25-30hz.
Main freq range for new subs is up to 50hz.
My current consideration is Ultimax 18" in either a Marty Cube or sealed cabinet.
I will use some form of equalization. Currently have Crown XTI 2002 (built in EQ) driving a pair of down firing Dayton 10" Titanics in sealed enclosures.
So with the limiting factors of size & price and a focus on rather low frequencies, what is my best choice for a pair of Passive HT subs?
I am not opposed to other designs, like dual opposed 15s, or anything else which will maximize my low frequencies with decent SQ. As Mae West used to say, "Too much of a good thing (bass) is never enough."
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I think the marty cube is a bit under 6 ft which is a little small for the 18" ultimax ported, 6 cu ft would be fine for the ultimax sealed though. If you want a vented box you could try the new Dayton Audio RSS390HE-22 15", it does fine in 5 or 6 cu ft.
Based on the Smarty Cube external dimensions of 25" x 23.5" x 28" the overall exterior volume is 9.5 cu. ft. This would net about 7.65 cu. ft. in a sealed box before subtracting braces and driver volume.
Since these subs will only be handling frequencies below 50hz, I want to maximize low and loud mainly for HT special effects. Sealed don't go low & loud without EQ. Ported go low & loud but have sharp cutoffs below their tuning frequency.
The question for me is which will be the most suitable for energizing a room of 3,400 cubic feet to frequencies below 20hz.
Since these subs will only be handling frequencies below 50hz, I want to maximize low and loud mainly for HT special effects. Sealed don't go low & loud without EQ. Ported go low & loud but have sharp cutoffs below their tuning frequency.
The question for me is which will be the most suitable for energizing a room of 3,400 cubic feet to frequencies below 20hz.
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As I remember their requirements, they need a large space behind the device such as another room. Additionally I believe the price was quite a bit more than $1,200.
But it is certainly a fun device to consider.
you're forgetting the volume of the port which does not count in the volume of the enclosure.
whatever you do will be a lot more low end than what you have. Selead or vented you have to pick your compromise, there is no "right answer"
if its not enough for you add more.
MartySub FAQ | AVS Forum
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My advice is to get Win ISD or similar cabinet sim program and make a comparison with that. I remember from my own sims that the UM18 needs a massive vented enclosure to have even a 20hz-ish hz corner frequency (and you still get steep 4th order roll-off below that.) The UM18 is really optimized for a sealed enclosure.
The Crown will output 800W into each 4R voice coil of the UM22 (don't know if it can handle the bridged 2R load) and that 1600W with EQ should be enough to drive the UM22 to Xmax at around 20Hz in a 6ft sealed cabinet. But it's up to you if it will produce enough SPL at your target frequency.
Dayton has Vortex and Kraken drivers that are of similar price and value but designed for a vented box.
The Crown will output 800W into each 4R voice coil of the UM22 (don't know if it can handle the bridged 2R load) and that 1600W with EQ should be enough to drive the UM22 to Xmax at around 20Hz in a 6ft sealed cabinet. But it's up to you if it will produce enough SPL at your target frequency.
Dayton has Vortex and Kraken drivers that are of similar price and value but designed for a vented box.
When searching PE, the Vortex & Kraken appear to be 21" drivers. I don't believe these are suitable for Marty Cube sized enclosures.
I was showing the size of a sealed enclosure with the same external dimensions of the Marty Cube, so there is/are no port(s).
I will continue to maintain 2 dual 12" OB sub woofers attached in parallel to my mains. I run the mains as full size speakers. Adding more than 2 additional subs (4 in total) would be a bit much.
My goal is to maximize the low bass out of these two additional subs.
ultimax18 sealed is good in anything more than 4-5cu ft but you'll want eq.
have fun! I had 6 AE dipole 15's for sub woofers and two dayton 12's had more output below 40hz.
try winisd, it's easy and fun.
WinISD - Linearteam
have fun! I had 6 AE dipole 15's for sub woofers and two dayton 12's had more output below 40hz.
try winisd, it's easy and fun.
WinISD - Linearteam
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