Simple Question

[tj1320 10+ year member]

I have 2 15L7 D4s and I will be putting them in a sealed box.

Kicker lists the enclosure volume for the 15 as follows:

Min 1.5 cuft.

Max 6 cuft.

My box will give them 4.4 cuft. per sub.

What sound/performance difference will there be with 4.4 compared to 1.5 and 6? I can't seem to find this info anywhere. Will they be louder with 4.4 instead of 1.5? Will they hit lower, etc?

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[tj1320 10+ year member]

Anyone?

 

[Atimm693 10+ year member]

IDK much about L7s but I do know that they aren't the best in sealed boxes.

 

[tj1320 10+ year member]

Well here is what I got from a QTC calculator. I'm not sure what it all means but maybe you guys will be able to tell me.

Qts = .507

Vas = 5.2 (ft3)

Fs Hertz = 26.3

Vb (ft3) = 4.4

Qtc = .7489

Fc = 38.85 Hertz

F3 = 36.8 Hertz

Does that mean that the box/sub will perform the best at around 37 Hz? LOL this stuff is confusing to me.

 

[tj1320 10+ year member]

Here is what I have in my current setup with my PG rsd12d subs. Maybe I need to move this to the subwoofer section to get a little more traffic. This section is SLOW.

Qts = .55

Vas = 3.39 ft3

Fs = 22.4 Hz

Vb = 1.9 ft3

Qtc = .9177

Fc = 37.38 Hz

F3 - 30.66 Hz

 

[Atimm693 10+ year member]

F3=recommended tuning frequency, but since you are going sealed it doesn't apply to you.