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<blockquote data-quote="hispls" data-source="post: 8402514" data-attributes="member: 614752">Because the loudest most efficient woofers available today are NOT 4&quot; coil, but suit yourself.Man up to a 3&quot; neo motor (Shocker, DD, N3, Warden) and you MIGHT gain 1dB and change assuming everything else is equal as far as what impedance your amps are seeing and if they like to peak at your car&#039;s frequency and if they like the amount of space you can give them.Throwing new subs at it will be an expensive proposition, though pretty much any gain from 55 will be expensive.&nbsp; FWIW I&#039;d think deadening would be the cheapest gain provided you&#039;ve already done your testing with seat position, visor, glovebox, etc (which is free gains).If you really want to just audition different subs you need to make some friends who have some equipment you can test.&nbsp; Otherwise, buying retail then selling is pretty brutal, and waiting for top tier 18&#039;s to come up in the right impedance is going to be a long game.</blockquote>

[QUOTE="hispls, post: 8402514, member: 614752"] Because the loudest most efficient woofers available today are NOT 4" coil, but suit yourself. Man up to a 3" neo motor (Shocker, DD, N3, Warden) and you MIGHT gain 1dB and change assuming everything else is equal as far as what impedance your amps are seeing and if they like to peak at your car's frequency and if they like the amount of space you can give them. Throwing new subs at it will be an expensive proposition, though pretty much any gain from 55 will be expensive. FWIW I'd think deadening would be the cheapest gain provided you've already done your testing with seat position, visor, glovebox, etc (which is free gains). If you really want to just audition different subs you need to make some friends who have some equipment you can test. Otherwise, buying retail then selling is pretty brutal, and waiting for top tier 18's to come up in the right impedance is going to be a long game. [/QUOTE]

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