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About Cleggsan
Expertise
Audio Design Engineer; systems, loudspeakers, cd/dvd players, etc. I am knowledgeable in all high end audio equipment and installations. MAKE SURE YOU GIVE A MAKE AND MODEL NUMBER AND CAR IF IT IS AN AUTO QUESTION.

Experience
Have been associated with audio design, standards, testing and component systems for over 40 years.

Organizations
Life Fellow Member of Audio Engineering Society Life Senior Member of Institute of Electronic and Electrical Engineers

Publications
Review technical manuscripts for IEEE Spectrum Write occasionally for high-end audio publications

Education/Credentials
BSEE/MSCS/MBA

Past/Present Clients
Past Employee/advisor to several well known audio products manufacturers

 
   

You are here:  Experts > Industry > Music /Audio Equipment > Audio Systems > power

Audio Systems - power


Expert: Cleggsan - 7/5/2009

Question
i have 1 ma audio 18'in a suburban, and it is a sealed box.what size amp do i need?

Answer
Wow, this is a big winner. Why?  Because the sensitivity of these monsters is:

Sensitivity: 94.6dB

Which means you can drive them with small power, but if you put big power into them with heavy for big acoustic output. You can get some awesome performance from this subwoofer!

Thus, you have a range of amps that will work just fine with this single driver:  

Minimum power:  100W
Maximum power:  1 KW (with reserve for best sound).

The impedance of this driver is 4 ohms and has a dual voice coil.  This means it should be wired in parallel giving a 2 ohm load to the amp.  The amp should be rated for continuous usage with a 2 ohm load.  The best kind of amplifier, in this case, since it is high power and you need the low impedance is a class D switching amp.  They are not too expensive and are very efficient.

Good Luck,

C  

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