Will someone check my design? - AVS Forum
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post #1 of 7 Old 05-16-2013, 08:45 AM - Thread Starter
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Hello,

I am building a sister sub to the one I built back in 2006 with the same woofer and amp since I have been so happy with it. My only issue has been that when I really want to crank it I have hit the cut off on it several times and even blew my amp once so I want to take some stress of her while smoothing out room response. I'll probably make a 3rd at some point. I just want to make sure I am getting everything correct before I start.

So I am going to use the Dayton 12" HF and BASH 300 amp.

Box will be tuned to 21 Hz, 5.3 internal volume, 4" x 11.24" port.

With that in mind I will build a box 20 x 24 x 24.

Does that look correct?

Thanks in advance.
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post #2 of 7 Old 05-16-2013, 09:41 AM - Thread Starter
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Also do you think a Dayton 15" HO with a 500W amp would be better than the 12"/300? I don't want to go over the 5 ft^3 mark so ho HF 15".
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post #3 of 7 Old 05-16-2013, 11:34 AM
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What is your requirement i.e. movies or music? If hybrid use, state your ratio between both.
Also, which HF/HO models are you specifically discussing here? There are 4 ohms, 8 ohms, and DVC (HO model) variants in 12" drivers.

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post #4 of 7 Old 05-16-2013, 11:45 AM
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Well if you already built it's twin a few years back, I guess I'm a little confused to what your inquiring about.

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post #5 of 7 Old 05-17-2013, 06:31 AM - Thread Starter
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Quote:
Originally Posted by bass addict View Post

Well if you already built it's twin a few years back, I guess I'm a little confused to what your inquiring about.

Sorry, I should have been more specific. The ft^3 of my first box is smaller than this one for some reason. I think I may have not calculated internal volume when I made the box last time. The size of that box is 18x 24 x21.5. I can't remember how long the port is.
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Originally Posted by braveheart123 View Post

What is your requirement i.e. movies or music? If hybrid use, state your ratio between both.
Also, which HF/HO models are you specifically discussing here? There are 4 ohms, 8 ohms, and DVC (HO model) variants in 12" drivers.

I would be using the 4 Ohm HF model in 12". My second post I was asking about comparing that with the 15" 4 Ohm HO model. I'm thinking it would probably be best to keep the subs as close as possible except maybe get this one tuned correctly this time.
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post #6 of 7 Old 05-17-2013, 08:31 AM
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Well you mentioned the possibility of building a third. If this is true, maybe prepare a little for the future by means of getting a different amp, one that could power all three or even four if you upgraded again.

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post #7 of 7 Old 05-17-2013, 02:38 PM
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HO 15

5.3 cu ft net tuned to 21Hz with one 6"x28" port and 108dB SPL at 20Hz (500 watts input power + 12dB HPF applied at 20Hz))

HF 12 4ohms

5.3 cu ft net tuned to 21Hz with one 5"x19" port and 106dB SPL at 20Hz (300 watts input power + 12dB HPF applied at 20








Since you plan to build a third one also and if it were me, I would go for HO 15. It is all about how much air a sub moves. The bigger the cone surface area; the more the bass.

Note that HO 15 can handle much much more power than a paltry 500watts and it can really take the bashing to push the cone further upwards till around 19mm. I am myself pumping 1100watts per cab off iNuke 6000 DSP and these subs can cleanly handle it. So, IMO you should consider HO 15 now and may be go for iNuke 3000 DSP, feed 600+ watts off one channel, and save the other channel for another HO 15 in the future.

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The best EQ is no EQ ...

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Dual Dayton RSS390HO-4 Reference 15 Build For HT

Main System: Klipsch RF-82 II, Klipsch RC-62 II, RS-52 II, Onkyo 5010, Rythmik FV15HP, PSB S300
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