What is Subsonic


Unregistered guest
what is that, subsonic filter or whatever its called.

Silver Member
Username: Tragedy

San Jose, CA

Post Number: 242
Registered: Feb-05
a subsonic filter cuts off freq below a certain range, while the opposite, a crossover, cuts off freq above a range.

subsonic filters are important in ported enclosures where you can cutoff freq below what your box is tuned to... also can be used to cutoff freqs your speaker/sub are not designed to play or that you dont want them to play.

Gold Member
Username: Fishy

Tamarac Ft.Laud, FL USA

Post Number: 1269
Registered: Sep-04
Yeah its basically just a high pass filter with a very low cutoff frequency which is sometimes set below what we can normally here(subsonic frequencies), thus the name.


Unregistered guest
So I should turn it on, on my amp?

New member
Username: Mikechec9


Post Number: 1
Registered: May-05
if you run a sealed enclosure, yes turn it off. the sealed air acts as a suspension and protects your subs from bottoming out due to sub sonic frequencies.

Unregistered guest
Yes I have a sealed box, so turn it off then.

Does anyone know where I can get pollyfill, like at a local store?

Silver Member
Username: Bnd_rulez

Phoenix, AZ USA

Post Number: 558
Registered: Mar-05
« Previous Thread Next Thread »

Main Forums

Today's Posts

Forum Help

Follow Us