First DIY subwoofer?!?! - AVS Forum
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Old 07-30-2014, 05:23 PM - Thread Starter
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First DIY subwoofer?!?!

I found this half built gem on craigslist and after reading through other diy dayton audio reference 15 hf sealed builds I am a little lost with its performance. I believe it may be underpowered. The enclosure measures 29 inches high, 21.5 inches wide and 13.5 inches deep (which I believe gives it nearly ideal volume). It is built and braced very well. It is also stuffed with some polyfil and there seems to also be small square fiberglass insulation pieces glued to the walls. The amp powering it is an older dayton audio 240 watt into 4 ohm ( I believe an spa240 ) I am trying to attach these photos but avs on my iPad seems really buggy. It was pretty much given to me with the wildly low o.b.o. I gave. Any input is a help. I am coming from a klipsch rw12d...I figured this would be an improvement but as of right now it's hard to tell. If the output could be improved with a larger amp and better placement I plane on duplicating this build to run duals.
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Old 07-30-2014, 05:24 PM - Thread Starter
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Originally Posted by Choppsho View Post
I found this half built gem on craigslist and after reading through other diy dayton audio reference 15 hf sealed builds I am a little lost with its performance. I believe it may be underpowered. The enclosure measures 29 inches high, 21.5 inches wide and 13.5 inches deep (which I believe gives it nearly ideal volume). It is built and braced very well. It is also stuffed with some polyfil and there seems to also be small square fiberglass insulation pieces glued to the walls. The amp powering it is an older dayton audio 240 watt into 4 ohm ( I believe an spa240 ) I am trying to attach these photos but avs on my iPad seems really buggy. It was pretty much given to me with the wildly low o.b.o. I gave. Any input is a help. I am coming from a klipsch rw12d...I figured this would be an improvement but as of right now it's hard to tell. If the output could be improved with a larger amp and better placement I plane on duplicating this build to run duals.
Another photo
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Old 07-30-2014, 05:26 PM - Thread Starter
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And another
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Old 07-30-2014, 05:27 PM - Thread Starter
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Sorry for some reason I can only upload one at a time...last one
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Last edited by Choppsho; 07-30-2014 at 05:31 PM.
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Old 07-30-2014, 05:28 PM
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Looks good to me, 240 watt is probably a bit on the low side though.
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Old 07-30-2014, 05:28 PM - Thread Starter
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And this
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Old 07-30-2014, 05:42 PM
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Old 07-30-2014, 05:45 PM - Thread Starter
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The seller was asking 200 or best offer...and after a week he took my offer which was significantly lower...I wanted to do my own build or buy a pre fab box and driver from parts express but this was way cheaper
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Old 08-06-2014, 10:51 PM
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9 cubic feet tuned to around 17hz vs. sealed both with 250 watts. I'm not really sure what I would 'advise' here, but the larger ported enclosure will provide quite a bit more bass. most plate amps have built in eq and high pass filters though, so that could be changing the response and may be the reason the original builder wasn't happy. I wouldn't send a ton of power to the -hf models, but in largish cabs, they don't really need it anyways.


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