EQ and amp for an 18" sealed sub? - diyAudio
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Old 3rd March 2013, 07:51 PM   #1
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Default EQ and amp for an 18" sealed sub?

I'll be building a sealed 4CF box with an 18" Dayton driver:
Box; 4 cu ft Subwoofer box - Subwoofer Cabinets - Flat Packs DIY Sound Group
Driver; 4 cu ft Subwoofer box - Subwoofer Cabinets - Flat Packs DIY Sound Group

I've read quite a few threads where guys have used this combo and have been pretty happy with the results. My question is about amps and equalization mainly. I could get a 500 or 1000 watt plate amp with built in parametric EQ to deal with the frequency roll off of a sealed driver, or will Audyssey MultEQ XT32 give enough EQ to compensate? If so I could get a more powerful rack amp. Would that work?

How do people with sealed*passive subs and stand alone amplifiers deal with EQ?


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Old 3rd March 2013, 09:19 PM   #2
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When I built my last few subs, plate amps weren't available, nor were nice computer-programmable crossover/eq systems. Lifted the circuit from Linkwitzlab.com (1972 article), and hand-wired it. Still working just fine.
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Old 5th March 2013, 05:01 AM   #3
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Personally, I would build a stand alone LT circuit and then use any amp that satisfies the power requirments.
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Old 5th March 2013, 12:51 PM   #4
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Mini dsp. I have it between my marantz 5006 and my qsc mx 1500a.
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Old 5th March 2013, 01:06 PM   #5
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I don't like the thought of using DSP for high EQ gains. A LT filter can easily have +15dB of gain.
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