new L7 really .08 cubic ft volume?

[skylineTT 10+ year member]

i did the calculations and my L7 has a .08 cubic foot volume.. that seems completely off considering..

i did the calcs on a CVX and it was .071.. seems off but iuno

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[skylineTT 10+ year member]

help mehh!!!!

 

[Atimm693 10+ year member]

How are you calculating it?

 

[budget76 10+ year member]

to calculate accurately, get a 5 gallon graduated cylinder, fill with 4 gallons of water, drop sub in, read new amount, and you have the sub displacement

 

[tcguy85 10+ year member]

to calculate accurately, get a 5 gallon graduated cylinder, fill with 4 gallons of water, drop sub in, read new amount, and you have the sub displacement

and a wet sub. that doesn't sound like a good idea to me.

 

[skylineTT 10+ year member]

well i used the 151 cubic inches of volume then used a few online calculators and it cam out to like .0873 cubic ft.. then i got my calculator and did 151 divided by 12^3 and it came out the same.. idk.. that was using the 06L7 T/S parameters though..

question: what is MMS? the parameters give the 08 specs but not displacement here ill copy..

Model: 08SL7D4

Norm Imp: 8.00

SPL: 87.47

Lem: 5.420

Reve: 6.77

SD: 0.0645

BL: 25.44

Vas: 45.46

Mms: 247.53

Fs: 31.55

Qms: 5.744

Qes: 0.586

Qts: 0.532

 

[skylineTT 10+ year member]

iff the mms means displacement or somethin, that changes everything.. wheres polecat?

 

[BrianChia 10+ year member]

Just use the spec given in the manual. It doesn't have to be three figures accurate. Most of the time assuming 0.1 cf is close enough for a 12 and around 0.07 is close enough for a 10, unless you have a massive sub (or a really small one).

 

[skylineTT 10+ year member]

well i used the Mms (246.53) and it came out to .1432.. seems more accurate. and the basket is quite a bit more hearty on this sub than the 04 but i still dont know what Mms means.. google time

 

[skylineTT 10+ year member]

ehh nope that means mechanical mass

 

[BrianChia 10+ year member]

Mms is moving mass -- it has nothing to do with displacement.

 

[mikey7182 10+ year member]

The displacement on my Alpine Type X 10 was .16^3... it was also 8.5" deep though... //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif I would think an L7 12 would be a bit more than .08 though.

 

[skylineTT 10+ year member]

well crap.. kicker didnt put the chet in there. lol

 

[Immacomputer 10+ year member]

The Displacement in cubic inches that they list is correct. And I would bet that if you did submerge the sub in water you would find that it is probably very close to what they list. There is quite a bit of air between the cone and the basket so just because it sticks out far does not mean it takes up a lot of space.

 

[skylineTT 10+ year member]

thats for the 06 though and the 08 basket is totally different