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Old 19th December 2002, 02:56 PM   #1
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Default Dual voice coils

For a subwoofer with dual 2 ohm voice coils, what will the efficency be with the coils wired in series for a 4 ohm load?

Thanks,

Opie
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Old 19th December 2002, 05:38 PM   #2
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Location: Bath, UK
Parallel connected voice coils increase efficiency 3dB and sensitivity 6dB over using a single voice coil.

Series connected voice coils increase efficiency 3dB and does not alter sensitivity over using a single voice coil.

Have a look at section 3.5 of the Shiva white paper:
http://www.adireaudio.com/Files/ShivaWhitePaper-V2.PDF

It includes a table of how different configurations of voice coil and drivers add up.

Nice one,
David.
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