Jump to content

Recommended Posts

This will be the place for eveything 18 inch Ethos.

 

 

Re     3

Le     2.94 mH

Qms     6.19

Qes     .845

Qts     .74

Fs      23.75 hz

Mms     448.6 grams

Cms     .1 mm/N

BL      21.43

Vas     181.85

SPL     88.26 1m/1w

power     1800 watts

Sd     1,134 cm^2

 

 

 

 

 

 

 

 

 

 

IMG_07891_zps4356648b.jpg

 

IMG_07871_zps36c6b951.jpg

Edited by Quentin Jarrell

Share this post


Link to post
Share on other sites

ohhh whats the box specs on this bad boy?

Share this post


Link to post
Share on other sites

Nice!

Edited by Stephen93s10

Share this post


Link to post
Share on other sites

go all crazy Q and make a 21

Share this post


Link to post
Share on other sites

Not enough motor for the moving mass.

If I ever do anything over an 18 it'll be oblong. Can't go much over 18 and be under the window line.

Share this post


Link to post
Share on other sites

Good stuff buddy.

Share this post


Link to post
Share on other sites

Awesome,

Share this post


Link to post
Share on other sites

Trade you my 15s(unopened) and some boot for some 18's right now.LOL

Share this post


Link to post
Share on other sites

looks good!

Share this post


Link to post
Share on other sites

Schwing!!! I'm so ready for these!

Share this post


Link to post
Share on other sites

ohhh whats the box specs on this bad boy?

Gonna be around 4-4.5 feet. I still have to extrapolate parameters.

4 would be nice! Maybe be able to sqeeze one in the trunk depending on port area.If so I will be selling my icons and box.

Share this post


Link to post
Share on other sites

ohhh whats the box specs on this bad boy?

Gonna be around 4-4.5 feet. I still have to extrapolate parameters.

If i can get a job i may sell my zcon and get one of these, if they only need 4-4.5 cubes

Share this post


Link to post
Share on other sites

 

ohhh whats the box specs on this bad boy?

Gonna be around 4-4.5 feet. I still have to extrapolate parameters.

 

Why is it that your subs are on the very small side as far as enclosure recommendations? almost half what most companies recommend for similar woofers. Just curiosity. 

Share this post


Link to post
Share on other sites

ohhh whats the box specs on this bad boy?

Gonna be around 4-4.5 feet. I still have to extrapolate parameters.

Why is it that your subs are on the very small side as far as enclosure recommendations? almost half what most companies recommend for similar woofers. Just curiosity.

Great research and ingenuity

Share this post


Link to post
Share on other sites

 

 

 

ohhh whats the box specs on this bad boy?

Gonna be around 4-4.5 feet. I still have to extrapolate parameters.
Why is it that your subs are on the very small side as far as enclosure recommendations? almost half what most companies recommend for similar woofers. Just curiosity.

Great research and ingenuity

 

Proper engineering and execution.  The drivers had to goals.  1st work in small boxes with my desired response, which is number 2.  Destroy the lows.  Anyone worth their salt can create a driver especially a subwoofer with what they think will be a flat response.  This is what we are after but it's not that simple.  

 

Back to the small enclosure, very simple physics.  You need x amount of force to get x amount of mass moving in x amount of volume.  This is simply calculated with FEA programs.

 

Now back on the response part.  Everyone gives out specs with boxes that show an awesome flat response on paper.  But we don't listen to anything in anechoic chambers.  We listen to our sound in vehicles right?  And vehicles have cabin gain which gives boost normally in the mid 40's region.  To help better explain where I'm going with this  here is an analogy.  If you install a set of highs and you crank it up and the mids sound noticeably louder than the tweeter you can do two things to fix it.  One you can adjust the crossover to remove boost form the tweeter or you can boost the mid to the level of the tweeter to make everything match up.  Because we can't adjust the boost down in the bass frequencies caused by transfer function which is normally 5-10 db around 45 hertz we do what we can, which is boost the frequencies from 25-35 hertz.  This gets you pretty close to a netted flat response in a vehicle even though on paper my recommended boxes shows a large peak in response around tuning and flat everywhere else.  This is the key to why you hear people say it slams both low and high frequencies better than most other drivers they have heard and not just hits the lows of just upper frequencies.

 

 

Another thing to note is I use large signal parameters to design drivers.  To those that have heard my drivers would it shock you to know that the small signal FS of the Ethos 15 is nearly 48 hertz?

 

The most important aspect to my sub design is Pat Turnmire and Enrique Stiles.  They are hands down, no questions asked, two of if not the best set of engineers in the world.      

Share this post


Link to post
Share on other sites

Damn, fs of 48 haha. Yes, from songs that go from 45hz down to 32hz, you feel there us no "transfer", sort of speak. It feels as one baseline at a different frequency. It's a smooth transition.

Share this post


Link to post
Share on other sites

What do we have here :)

 

BF8A45A7-7F26-48FB-BE91-6ED2FC0B637E_zps

 

E978017B-0798-457C-BC65-E587B56A41E8_zps

 

0F402A47-4FF5-4611-ACF3-E376AAC7CB36_zps

Share this post


Link to post
Share on other sites

:woot: looks badass 

Share this post


Link to post
Share on other sites

Killer!

Share this post


Link to post
Share on other sites

First set of Ethos 18's right there

Share this post


Link to post
Share on other sites

They are gonna get loud and low that's for sure:)

Share this post


Link to post
Share on other sites

Wish I had a need for 18s.maybe it's time to wall the camaro again.

Share this post


Link to post
Share on other sites

Hell yeah, I have a goal that should be attainable under 40hz.

Share this post


Link to post
Share on other sites

so sexy.. loving that big 12 spoke

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×