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Old 28th February 2005, 09:37 PM   #1
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Location: michigan
Default suitable amp for this subwoofer?

my electronics teacher just gave me a non working subwoofer today, an infinity BU-120. it looks to be not bad. the amp was blown so i tore it out, and covered the back hole with a piece of plexi and sealed it with some bathroom sealer i had laying around. right now im looking to build an amp but i dont know what i should make. ideas?

i cant find too much info on the sub but its 12" and it was originally 150 watts.
from infinity:

sorry if this should be in a different forum, ill go to the appropriate amp forum when i get an idea of what i need. im pretty new at this diy audio stuff, so dont overfill me with jargon
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Old 28th February 2005, 10:42 PM   #2
mike.e is offline mike.e  New Zealand
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Get an amplifier with an RMS rating close to the RMS rating of the driver in question. Consider excursion also [winisd pro from]

Plate amps are quite value for money.

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Old 28th February 2005, 11:28 PM   #3
Apex Jr is offline Apex Jr  United States
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Default Sub-Amps

Check out my website at
under the amplifier section and I would suggest
either the Apex "Junior" or the AudioFile VRS 1205
to use with the Infinity driver...
Steve @ Apex Jr.
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Old 2nd March 2005, 05:03 AM   #4
simon5 is offline simon5  Canada
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I'll suggest to look at plate amps from PartsExpress also.
DIYaudio for President !
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