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Has anybody tried the Polk Audio DB 842 SVC Sub

1.8K views 5 replies 5 participants last post by  ad78  
#1 ·
as a replacement in their Alpine 9 speaker system? I replaced the three front factory speakers with JBL Club3020's and really like the sound. No I'm thinking of maybe upgrading the sub that's under the back passenger seat. Any thoughts?
 
#5 · (Edited)
The enclosure, subwoofer, and amplifier were optimized and designed as a package so changing any of them and expecting an improvement is not feasible no matter what people say.

Many have reinforced the enclosure and put in a better performing 8" along with an external amplifier, the OEM sub and amp are trash.