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Hi all i'm thinkin about trying out a 6th order box for a single 15... i that 17H X 36 W X 36D to work with would that be big enough to make an attempt at it? and can anyone give me some tips on how to build it, tune is and such, the sub is an RD Heavy weight 15 dual 2
Posts: 322 | From: Brantford, Ontario | Registered: Oct 2007
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posted
i'd like to try it for music, but i've heard they don't sound the best, so maybe spl, it'd be in the trunk of a 2000 buick century
Posts: 322 | From: Brantford, Ontario | Registered: Oct 2007
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posted
maybe give yourself around 3-3.5cubes for the rear chamber, plus maybe a 6" aeroport or slot. sub playing back or toward the drivers side. then use the rest of the space as your front chamber...with a larger square port playing forward into the cab from the driver's side, trunk sealed off.
Posts: 5494 | From: Columbus, OH - formerly FL | Registered: Oct 2003
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should the rear chamber be ported into the front chamber or into the car?
Posts: 322 | From: Brantford, Ontario | Registered: Oct 2007
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posted
i would port the rear into the front chamber. That's called series tuned 6th order.
if you did front and rear each ported into the car separately, that's parallel tuned 6th order. If you went that route, one of the chambers would have to be tuned very high. the other tune very low, but moderate port area to retain some control and a "closer to smooth" frequency response
Posts: 5494 | From: Columbus, OH - formerly FL | Registered: Oct 2003
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posted
cool thanx man how big of ports should i do they will be slot ports? would i be able to do the sub firing forward or nah?
Posts: 322 | From: Brantford, Ontario | Registered: Oct 2007
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quote:Originally posted by D-Bass: i would port the rear into the front chamber. That's called series tuned 6th order.
if you did front and rear each ported into the car separately, that's parallel tuned 6th order. If you went that route, one of the chambers would have to be tuned very high. the other tune very low, but moderate port area to retain some control and a "closer to smooth" frequency response
how close would you tune a seris tunned box? how about the ratio for front to rear chamber size. 2 to 1? example ( front 5cubes, rear 2.5 cubes)
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The enclosure will have a peak between the tuning and a sharp roll off outside the tuning range.
In the series 6th orders I've built I've tuned the rear chamber between 32-35hz and the front chamber in the 50s. They usually have a great peak in the high 30s/low 40s
The design I have works great for a pair of 12s or a single 15.
If you'd be interested in it i'll drag out the notebook and give you the box
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Posts: 8169 | From: Russellville AL | Registered: Nov 2002
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