Assist with Box Design - Home Theater Forum and Systems - HomeTheaterShack.com

 
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post #1 of 2 Old 01-16-18, 08:52 AM Thread Starter
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Join Date: Jan 2018
Posts: 1
Assist with Box Design

So i had an old Cerwin Vega 10" powered sub for the last 19 years i uss it to watch movies in my living room. Amp smoked a couple weeks ago and i have set off on looking for a replacement. With cost of new powered subs being so high I have decided to use what i have here. All i would have to purchase is the MDF. Fairly cheap if it will work.

This is going in a room 24x17x17, very high ceilings. I have a 2 channel 150 watt amp. I am planning on using 2 Rockford Fosgate RFZ 3812 12" speakers. Currently using this setup in 2.2cuft sealed box. its a bit boomy in the high end and drops quickly. Speakers and the amp are out of old system. I have modeled boxes in Box Pro and Winisd. Looking at around 6cuft box 19-20hz tuning. Cone excursion goes out the window. I can reduce the box to 3-4 cuft. All kind of blurs together after a while. Looking for a sanity check. Is it even worth building a box for these speakers? If i can get by with the box for now in 6cuft plan is to replace the speakers with some 15" down the road, when/if these speakers give out.
Speaker specs are
Diameter 12"
Magnet Weight 30
Frequency 25-200
Nominal Imp 8
RE 7.9
FS 25
Qts .61
Qes .7
Qms 5.54
SD 84 in^2
Vas 6ft^3
Cms 4.19E-04
Mms 3.35oz
VC Diameter 1.5
VC Inductance 5.38mH
BL 13.5
Xmax .3
SPL 88
PE 150 RMS/400W PEak
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post #2 of 2 Old 01-22-18, 05:32 AM
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Join Date: Jan 2018
Posts: 6
Re: Assist with Box Design

MDF - the most normal option. You can also use the leftover laminate or buy, or maybe ask for free in the warehouse. It will be very stylish.
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