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DIY Subwoofer Questions

#1
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Hi everyone!

Just new here, but have been reading with great interest over the last few days through the forum here, especially with relation to some projects many of you have made.

I'm not exactly a professional when it comes to speakers and design, but I do understand enough of the basics to know what the main things to look for are. I have been thinking for a while that I would like to build a proper subwoofer to really enhance the movie experience, plus "fill in" the low end to the sound spectrum with some music. I much prefer smooth, clean bass to the typical "doof doof" type subwoofer that seems to come from many of the brand name generic systems, such as the logitech systems.

I currently don't have much in the way of a home theatre system, as I simply have no space for it. I typically watch DVD's and HDTV on the computer, running through a Dell 20" Widescreen monitor, with a set of Compro amplified speakers (not a typical set of plastic speakers, but proper wood-cabinet bookshelf + mid-sub system), with a 10 inch Response Woofer, which I built up about 5 years ago when I got absolutely sick of the atrocious internal 3" 'puffing' driver that was supposed to be making bass... not moving air noises! The set of Compro speakers I am quite happy with for the moment, as they have very clean sound for what they are, but I will build my own in future when I have some time.

Anyway, I have been looking around Parts Express, and came across the "Dayton RSS315HF-4 12" Reference HF Subwoofer 4 Ohm". To me, the driver seems looks to be quite respectable with the response charts, and comes at a good price with a number of positive reviews, but I would like to use it for a musical/movie subwoofer, most likely a sealed enclosure, which I would hope to at least be able to make the floor shake while watching James Bond for example. I am quite handy with both electronics and woodworking, and have most the tools I would need to make an enclosure with relative ease, but I am not sure of the more finer details, such as whether the driver would even be suitable, what design the enclosure should have, amplification etc.

For the moment, I know it will be overpowered for my room size, but I will most likely in the near future be moving into a larger place, so I would like to have it designed so I can still use it in future. My room is probably about 7m * 6m * 2.75m, and the size of the enclosure is not a serious issue. I am not even sure whether it may even be better to look at a 10" driver instead.

Thanks everyone!
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#2
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Re: DIY Subwoofer Questions

That PE sub is great but the shipping to Austrailia will be very high. You might as well spend a little more and go with a sub that will provide more output. That will save on upgrading when you move to a bigger room.

-Robert
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#3
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Re: DIY Subwoofer Questions

Quote:
Originally Posted by Robert_J
That PE sub is great but the shipping to Austrailia will be very high. You might as well spend a little more and go with a sub that will provide more output. That will save on upgrading when you move to a bigger room.

-Robert

The 12" HF wouldn't have very high output? I aren't really looking for a high presence of bass, more a seamless integration with that ability to pull off some localised tremors in movies pretty much

I like the idea of building my own speakers, as I don't believe in paying the premium for something pre-assembled. If the postage premium is as high as you are suggesting... what would you recommend that is available locally? As far as I'm aware, there's very little in the way of decent drivers in Australia...
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#4
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Re: DIY Subwoofer Questions

Get in touch with the guy that runs Subwoofer Builder. He's down there with you. If his e-mail isn't on his site, then check Home Theater Shack forums. He's a member there. He can best explain shipping costs and give you a run down of what is available to you locally.

-Robert
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