Fi Q 15 high QTS questions

[Jhunt94]

I had a question about my Fi Q 15 and I figured that this would be the perfect place to ask questions related to car audio so I made an account and here I am. I bought a Q 15 with the high QTS option because I have a regular cab F-150 and I intended to run the subwoofer sealed because I couldn't make a very big box without taking out some of the interior. Well after playing around with measurements of the box I built a box that is 3.3 cu ft and is within the numbers recommended by Fi to run the subwoofer ported. Right now the box is sealed but I've thought about putting a port in it. My question is would it sound fine if I decided to port the box or should I keep the box sealed. I saw where someone said that Fi told them it would be alright to but the high QTS sub in a ported, but I don't know if the person really talked to someone from Fi. I'm hoping someone here can help me.

[john253a]

It will produce more sq in a sealed box then a ported with that option

But you can get louder with that option in a ported box,

Only down side is you will need to tune high for it to sound any good

I've found 40-45hz (42 is my preface) when doing it

[Jhunt94]

It will produce more sq in a sealed box then a ported with that option

But you can get louder with that option in a ported box,

Only down side is you will need to tune high for it to sound any good

I've found 40-45hz (42 is my preface) when doing it

So have you done this??

[john253a]

yes with good success,

just don't except to play below 35-37 with any serenity

[kirill007]

If you have that much room before a port comes into play you will not have enough air space after port displacement.

And since you have chosen the high QTS option, it wouldn't be smart to switch over to a ported box because it will be a lot peakier then your sealed box.

Just keep the box sealed.

If you go ported in a small space like that it will sound worse and might also not even be louder.

[Jhunt94]

If you have that much room before a port comes into play you will not have enough air space after port displacement.

And since you have chosen the high QTS option, it wouldn't be smart to switch over to a ported box because it will be a lot peakier then your sealed box.

Just keep the box sealed.

If you go ported in a small space like that it will sound worse and might also not even be louder.

Well that measurement of airspace was after port and sub displacement on the Torres calculator, but I guess I'll keep it sealed thanks for the advice