Box help...glass?jonathan?fishy?any1?

 

Bronze Member
Username: Napalmz

MIDWEST

Post Number: 17
Registered: Oct-04
ok heres the thing i bought a box thats tuned to 38hz its 2.2cu(ported for 1 12")(obcongz121)and i was wondering since i have an id max v3 d2 i know it wants lower freq..i basically got this badboy for free so i wanna use it..will polyfill and my subsonic filter help me out here and if so how much fill and what do i set the filter at??? thanx in advance for the help.
 

Gold Member
Username: Glasswolf

NorthWest, Michigan USA

Post Number: 4563
Registered: Dec-03
polyfill only gives the impression of a box being about 10% larger than it is.
you want to set your infrasonic filter to about 16-20Hz to prevent loss of damping and driver damage.
 

Bronze Member
Username: Napalmz

MIDWEST

Post Number: 18
Registered: Oct-04
thanx again glass..so polyfill is of no use in this case???
 

Bronze Member
Username: Napalmz

MIDWEST

Post Number: 19
Registered: Oct-04
you said 10% larger..if thats the case wouldnt the freq drop also???
 

Bronze Member
Username: Napalmz

MIDWEST

Post Number: 20
Registered: Oct-04
i guess what im tryin to say is if i add a lb of fill it should lower the freq..
 

Silver Member
Username: Audiobahn_man

Freakmont, MI

Post Number: 180
Registered: Aug-04
yup
 

Silver Member
Username: Fishy

Tamarac, FL USA

Post Number: 536
Registered: Sep-04
A 10% increase in volume to say 2.42 ft^3 in your case, would only give you about a 36 Hz tuning point with your existing ports. You're gonna need to extend port length if you want something lower.

-Fishy
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