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View Full Version : MJ 18" for HT sub??



gsuchyta
09-13-2008, 05:46 PM
Would a mach 5 audio MJ 18" be a good choice for a home theater sub that is if I can find one lol?

Huge box tuned loooww for the parties

mrogowski
09-13-2008, 05:52 PM
Would a mach 5 audio MJ 18" be a good choice for a home theater sub that is if I can find one lol?

Huge box tuned loooww for the parties

Of course! Many folks have used them this way. Build big, tune low. 10 cubes tuned to 18-19Hz. This is the recommended size for the MJ-18M.

Atimm693
09-13-2008, 06:11 PM
Hell yea.

When I get my own place I would do something like this.

gsuchyta
09-14-2008, 02:44 AM
When I build the box I just gotta make sure it will fit through the door lol!

If the box is 10 cubes it is more efficient thus I could get away with like a 400-500 watt plate amp???

mlstrass
09-14-2008, 02:48 AM
normally yes in a box that big. I have 2 15" RL-P's each in 10 cubes/19Hz and they get stupid low/loud off 400watts each.

Mach5 forum on SSA should have plenty of builds with the MJ18.

adio
09-14-2008, 03:05 AM
Of course! Many folks have used them this way. Build big, tune low. 10 cubes tuned to 18-19Hz. This is the recommended size for the MJ-18M.

what sizes sealed for the mj and/or the maw 15?

wp7456
10-25-2008, 10:01 PM
In a HT environment are you supposed to go IB with the MJ 18? And why tune it so low... isn't that for HT subs that are meant for movies and not music? Been thinking about getting one and the 500 watt dayton plate amp off of partsexpress, or is the bash one worth it?

jdawg
10-25-2008, 10:05 PM
In a HT environment are you supposed to go IB with the MJ 18? And why tune it so low... isn't that for HT subs that are meant for movies and not music? Been thinking about getting one and the 500 watt dayton plate amp off of partsexpress, or is the bash one worth it?

you dont HAVE to. Not everyone can cut a hole in the wall. If you can I would. Drawback of the IB is you need lots of cone area and power. Depends on your room size too. 2 at least in a small/med room. Mor if you can afford it. Build a manifold for 8 if you can. Check out the cult at http://ibsubwoofers.proboards51.com/

another option is a sonotube in the corner, use heigth to get your volume

wp7456
10-25-2008, 10:13 PM
well instead of cutting a hole in the wall could I sue a 10 cu. ft. box? I mean this would be for a pretty big room.

jdawg
10-25-2008, 10:16 PM
well instead of cutting a hole in the wall could I sue a 10 cu. ft. box? I mean this would be for a pretty big room.

sure, tune real low. The whole point of HT is to feel vibrations not to be 'loud'. If you dont want a big square in your room then do a sonotube
http://images.google.com/images?sourceid=navclient&ie=UTF-8&rlz=1T4TSHB_enUS255US255&q=sonotube%20sub&um=1&sa=N&tab=wi

wp7456
10-25-2008, 10:22 PM
well i'm not only using it for TV but for audio too, and I would like to blast it and get it loud

mrogowski
10-25-2008, 10:30 PM
Agreed.

jdawg
10-25-2008, 10:31 PM
ask mrogowski, he knows alot about mach5, but honestly a low tune wont mean it will sound like crap, just mean you wont have that bump in the low 30 range that people like for rap

mrogowski
10-25-2008, 10:34 PM
well i'm not only using it for TV but for audio too, and I would like to blast it and get it loud

HT is not car audio :fyi:

You can get fairly loud but given the low frequencies you are attempting to produce don't expect concert levels.

wp7456
10-26-2008, 12:26 AM
no I meant HT and home audio, like music in the house and movies in the house.