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Old 9th November 2011, 08:38 PM   #1
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Default advice on a 15" or 18" DIY subwoofer build

im looking to build my own 15" or 18" subwoofer mainly for my hi-fi setup but i would also like to be able to use it for home cinema also. I was was looking some advice on this project any enclosure designs would be greetly appreciated and advice on the best drivers would be good.

thanks
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Old 9th November 2011, 08:47 PM   #2
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More info would be helpful. listening levels, room size, any WAF issues, extension requirements, musical tastes, etc.
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Old 9th November 2011, 08:53 PM   #3
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my room is 13ft by 13ft i listen to all types of music mostly blues and rock. bass from 10-100hz. i have cyrus cd8x cyrus prex vs cyrus x power x2 and monitor audio rs1 speakers.
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Old 9th November 2011, 08:58 PM   #4
sreten is online now sreten  United Kingdom
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Hi,

Start I guess by looking here : Dayton Audio C1500K 15" Powered Subwoofer Kit 300-770

rgds, sreten.
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Old 9th November 2011, 09:19 PM   #5
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How much space, how much money, where are you located?
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Old 11th November 2011, 06:31 PM   #6
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have a 13ft by 13ft room. i live in the uk.
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Old 12th November 2011, 09:07 PM   #7
sreten is online now sreten  United Kingdom
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Hi,

TBH the DIY options in the UK are quite depressing, you simply can't get stuff
at reasonable prices for high quality stuff, you end paying more than buying.

Doubly so if you carefully buy used.

With a square room I strongly recommend a sub with an adjustable notch filter
for the doubled up main room modes frequencies, should make a big difference.

Ideally you want probably a 87Hz filter, and for really low also a 43Hz filter.
Make no mistake, EQ for difficult rooms is the key to sound quality.

Without EQ a sub set up in your room will do 40Hz, and die below that,
or go low low but have a huge peak at 43Hz, "one note bass".

Room is not that big and probably a good 12" will be more than adequate.

rgds, sreten.
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Last edited by sreten; 12th November 2011 at 09:15 PM.
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