Enclosure port size?

So I am trying to finish up my sub box and I have been playing with the calculators online. What better, a higher tuning frequency or a lower one. Also my box has a volume between 1.5 and 1.9 Cu in. What size port would you recommend. BTW the material I used is 3/4 MDF. Thanks in advance.

[MP81]

All depends on the subwoofer you're using.

Usually they'll tell you the optimal sizes/volumes. I know JL Audio tells you the exact size/dimensions for a sealed box, and then all the dimensions necessary for a ported box (including port location, dimensions, etc).

[phoenix_rising]

My subs are 400 watt RMS / 800 watt max Audiobahn Flame baskets.

I guess I just don't understand the relationship with tuning frequency and the audio quality. My box is way small for my subs. Im just trying to figure out how big I should make the port(s) to compensate.

Edit: Looks like this might be the answer I was looking for...

[MP81]

My subs are 400 watt RMS / 800 watt max Audiobahn Flame baskets.

I guess I just don't understand the relationship with tuning frequency and the audio quality. My box is way small for my subs. Im just trying to figure out how big I should make the port(s) to compensate.

Edit: Looks like this might be the answer I was looking for...

I'd just shoot Audiobahn an email, or give them a call - I'm sure they'd be able to help you figure it out.

[Darren]

Like Kyle said depends on sub... But I personally think sealed boxes sound the best. Why going ported?

[MP81]

Like Kyle said depends on sub... But I personally think sealed boxes sound the best. Why going ported?

I agree there. I wouldn't consider porting a box a work-around to having too small of a sub box.

[phoenix_rising]

I was told that with the power these subs are pushing that they will damage the box.

[MP81]

I was told that with the power these subs are pushing that they will damage the box.

Unlikely...especially with 3/4" MDF. I mean, 400W RMS ain't a ton...

What's the volume in your box?

[Darren]

Yeah no if your not set on a ported box then build a sealed box to spec for the sub. I had 2 12 inch Kicker CVR's pushing about double your one sub hooked up to a 1800 watt D class amp in my camaro in a sealed box... I built the box myself and it didnt damage it at all. Now I on the other hand damaged it quite a lot but the subs did not lol

[94punisher]

Is there any advantages of having it ported cause I'm in about the same boat.... Got a sealed box and two 12"800 watt B.A.S.S subs by acoustic audio running off a 2000 watt amp.....They kick but I was wondering if porting it would help. Don't know what they sound like in my firebird yet but in my 4 banger's trunk they aren't bad. Just seems like there is a lot of pressure in the box for the subs to move. Really don't have much experience with subs SO??????

[MP81]

Is there any advantages of having it ported cause I'm in about the same boat.... Got a sealed box and two 12"800 watt B.A.S.S subs by acoustic audio running off a 2000 watt amp.....They kick but I was wondering if porting it would help. Don't know what they sound like in my firebird yet but in my 4 banger's trunk they aren't bad. Just seems like there is a lot of pressure in the box for the subs to move. Really don't have much experience with subs SO??????

You'd be better off building the box to enclosure specs...porting it will make it louder, but sound less crisp and clean.

[Gregs_gsxr]

Myself, I like sealed boxes, sound better, and way less work to build

[94punisher]

057 - Copy.JPGWas gonna build it last weekend. Was doing a whole bunch of looking at builds on here and whatever plans I could find. Looked at buying one too and and the prices pushed on my search. Then did some craiglisting $20 and a small trip I think it was worth it. Whole system build for $80....... Just didn't know if it made a real difference. I'll probably run it as is first see how it sounds in the bird then if I don't like it, port it and if I don't like that seal it back up.