Re: Low frequencies on a 6.5" sub?

In article <481912a7$0$7052$4c368faf@[EMAIL PROTECTED]
>,
 "Phil" <phil_lee@[EMAIL PROTECTED]
> wrote:

> Would I be able to get low 40-90Hz sounds from a 6.5" sealed sub in a
car? 
> I'm looking to use my factory sub with a different amp with an
adjustable 
> crossover to turn the resonating frequency down from the 160-250Hz range
to 
> the 50-90 range.  I'm looking for decent-quality sound without being 
> "boomy."  Has anyone seen this done easily, or am I looking for too much
out 
> of a 6.5" sub?  Would I need to go to 8, 10, 12 inches?  I'm not really 
> willing to sacrifice trunk space for this project; I'd only retrofit an 
> existing setup to the current spot where the stock speaker is.
> 
> Phil 

One 6.5 would be difficult.  Its efficiency and power handling at 40Hz 
is going to be miserable.  There will be a lot more heat coming out than 
sound.

Do you have a reasonably well sealed trunk with 6x9 mounts?  Some 6x9 
speaker models have the long excursion and soft suspension to perform 
well at low frequencies.  Cabin gain and careful EQ tuning could get you 
down to 20Hz with a pretty good sound level.

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