TC Sounds LMS 15 :: 20 ft^3 :: 22hz

[DJ Nitrous 427 10+ year member]

I measured the T/S parameters myself for this sub and plugged them into TermLab's box program. It wont let me screen capture the response graph but here are the numbers :

-3.0 db : 14.5 hz

0.0 db : 18.5 hz

3.3 db : 20.1 hz

4.6 db : 22.0 hz

4.7 db : 23.1 hz

4.8 db : 27.8 hz

4.9 db : 30.5 hz

4.9 db : 32.0 hz

4.8 db : 33.5 hz

4.7 db : 35.1 hz

4.6 db : 36.8 hz

4.0 db : 42.3 hz

3.5 db : 46.4 hz

3.0 db : 50.9 hz

2.6 db : 55.0 hz

2.0 db : 64.0 hz

1.5 db : 73.9 hz

So:

Cutoff : 17.5 hz

0 db : 18.5 hz

3 db up : 20 hz

~ 4.8 db plateau : 22hz to 36.8 hz

slope back 3db up : 50.9 hz

According to the program (2) 6" aero 6" long would give me the tuning I want with a vent velocity of ~8%. You think thats enough port area?

Click to read more...

 

[DJ Nitrous 427 10+ year member]

noone have any input?

 

[DJ Nitrous 427 10+ year member]

bump

 

[dappa5 10+ year member]

it's on the small end of port aera 226 ish (12-16 in^2 per ft^3 ) but aeros are more efficient so i think you should be fine

hopefully some others will agree

 

[Skip01 5,000+ posts]

This is for a HT setup?

 

[DJ Nitrous 427 10+ year member]

naw my truck

 

[SomeDonnieDude 10+ year member]

Looks like a sick low end!

 

[Skip01 5,000+ posts]

naw my truck

20cu for a single 15?

Or how many?

 

[DJ Nitrous 427 10+ year member]

yup...just 1 15

 

[812mcmurray 10+ year member]

my god lol

 

[RAM_Designs 5,000+ posts]

Goodbye mechanical power handling!

 

[bumpin buick 5,000+ posts]

a single 15 can get loud.... real loud //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[DJ Nitrous 427 10+ year member]

lmao...should sound good...not worry about how loud it gets

 

[DJ Nitrous 427 10+ year member]

its a single 4 ohm coil... i got a soundstream pca2.760 .... bridged itll get 760w

 

[Skip01 5,000+ posts]

So youre going with a box 4x the recommended size?

Why?