What type of box?


Unregistered guest
What is the best type and size enclosure for two 12 alpine r's (SWR-1242D)being powered by a Crossfire VR1000D amp?

Bronze Member
Username: Marines

Post Number: 62
Registered: Mar-05
dont get ported whatever you do i dont know the dimensions but i do know that ported boxes do not let destortion out thus meaning you will not know when a speaker is blown until it puts a load back onto your amp and frys a tracer on your amp

Platinum Member
Username: Glasswolf

Wisteria, Lane USA

Post Number: 10760
Registered: Dec-03
not true.
bandpass masks distortion. ported really doesn't. it just increases group delay over sealed.

anyway 2cu ft per sub, ported, 4" ID ports, tune ports to 34Hz
use an amplifier with a subsonic filter and set the filter to 30Hz
set LPF on amplifier to 60Hz
set amp gain properly to avoid any distortion and those subs will do just fine and hit quite hard and deep.
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