Need Advice re: Torres Calculator results

[Clarence Joseph Sales]

Lightning Lab 1xl 15d2 Specs

500 watts RMS

dual 2 ohms COIL

dual 220oz MAGNET

15" inch SUBWOOFER

frequency response 20 Hertz ~ 300 Hertz

pressed paper CONE

extra heavy duty rubberized foam like EDGE

reinforced BASKET

SOLID COPPER voice coil

2.5" inch ALUMINUM VOICE FORMER

extra wide spider

[CleanSierra]

If the subs don't have s bunch of Xmax, you could get the box into a safer range, like 15" per foot or so. I would say the airspace looks pretty good for a lower power setup.

Disadvantages of an enclosure that is too large, is potentially NOT enough back pressure. The subs could struggle to pressurize the internal airspace and effectively, you would be free-airing your subs. There is a happy balance in having enough airspace to show the subs too perform properly, avoiding TOO MUCH air to the point that they don't pressurize your available airspace, and also avoiding NOT allowing enough airspace. You need to find the"Goldilocks" range.

[CleanSierra]

They are Dual 2 ohm coils? Are you running each amp at a 2 ohm load then?

[Clarence Joseph Sales]

If the subs don't have s bunch of Xmax, you could get the box into a safer range, like 15" per foot or so. I would say the airspace looks pretty good for a lower power setup.

Disadvantages of an enclosure that is too large, is potentially NOT enough back pressure. The subs could struggle to pressurize the internal airspace and effectively, you would be free-airing your subs. There is a happy balance in having enough airspace to show the subs too perform properly, avoiding TOO MUCH air to the point that they don't pressurize your available airspace, and also avoiding NOT allowing enough airspace. You need to find the"Goldilocks" range.

I understand what you're saying. Some guys i've talked to says 3.5cuft is the recomended specs, some says 4. I think i'll go for 4cuft /sub since I will be driving all 4 subs with a single 1500.1 for a while.

[CleanSierra]

If the subs don't have s bunch of Xmax, you could get the box into a safer range, like 15" per foot or so. I would say the airspace looks pretty good for a lower power setup.

Disadvantages of an enclosure that is too large, is potentially NOT enough back pressure. The subs could struggle to pressurize the internal airspace and effectively, you would be free-airing your subs. There is a happy balance in having enough airspace to show the subs too perform properly, avoiding TOO MUCH air to the point that they don't pressurize your available airspace, and also avoiding NOT allowing enough airspace. You need to find the"Goldilocks" range.

You just quoted my quote exactly. What was your content, or what were you meaning to say?

[Clarence Joseph Sales]

You just quoted my quote exactly. What was your content, or what were you meaning to say?

My bad... Accidentally pressed post button

[Clarence Joseph Sales]

They are Dual 2 ohm coils? Are you running each amp at a 2 ohm load then?

Afaik, the installer wired it at 1ohm. My amp is 1ohm stable

[Clarence Joseph Sales]

If the subs have a BUNCH of Xmax, more port per foot is good. If they don't have tons of Xmax, and don't displace that much air, you may not need a port area per foot number as high as you currently are calculating.

Did a little research regarding the subwoofer's XMAX. I've read it has a 30mm xmax

[CleanSierra]

I'm sorry, I keep forgetting you are CURRENTLY running 4 subs that are Dual 2 ohms. Yes, that should be your finally ohm load: 1 ohm

And 30MM Xmax, that's awfully high for a 500W cheapass sub. I'd guess half that... maybe, if you're lucky. The Fi Q is an SQ based sub and it has 1500W handling, a 3" coil, and 28MM of Xmax. I'm doubting the 30 on yours.

[Clarence Joseph Sales]

Here's a video of the subwoofer i'm using but it's only 12 inches. It's in filipino language but you'll see the sub's excursion playing 20hz to 30hz so you' can visualize the subwoofer excursion. The one who made the video claims it has a 30mm xmax but i do not know if it really is. The amplifier he is using is the same amp i am using it's a 1500.1.