Side-firing vents

[Droco]

Although I think I already know the answer I want to double check here.

I'm looking into putting ports into a midbass cabin with a range of 80-700hz, but due to build limitations I will not be able to put them in the front. Could I have the ports (with a port tuning of 90hz) fire from the side walls, instead of the front? Or would this influence SQ too much? I can imagine this having a detrimental effect.

 

[Galu]

Perfectly alright to do so and may actually be better in regard to SQ than front or rear firing ports, for reasons of which you are probably aware.

Not common in commercial speakers, probably for cosmetic reasons, but it has been done

 

[bitSmasher]

BFM OT12 does this, as a mid-high cab

 

[Jag768]

The front is sq wise the worst position actually I would say

 

[Droco]

BFM OT12 does this, as a mid-high cab

Oh, good catch! I know this cab (from online), but never noticed the ports. They are the handles on the side right?

On an other note, those are PA cabs, so maybe not the best reference for SQ.

 

[Droco]

Perfectly alright to do so and may actually be better in regard to SQ than front or rear firing ports, for reasons of which you are probably aware.

Let's assume I don't know anything about it . Is it because of timing of the main vs port generated sound?

Not common in commercial speakers, probably for cosmetic reasons, but it has been done

A lot use backside ports though.

 

[Galu]

You may find this thread helpful - posts #2 and #3 pretty much sum it up.

Discussion of Port Positions