Pictures Included: Sundown Nightshade 15", 3 Box Models (WinISD & BBPro)

[mledez 10+ year member]

So my Nightshade is on the way... (Bought from Cutdawg84)

I will start the box building because the sub have a loooong way to arrive home

(US - Venezuela)

I have a SQ setup, (Focal K2 Power and Polyglass Comps / SI Mag V4 Sub) for real daily, but I want something to make noise on weekends open trunk (Yaris Sedan) so I need some advice choosing tunning freq, so I decided to model with WinISD and BBPro to see

Derrick824 (Thanks man) gave me as a recomended for daily... a 3cu.ft net with 2 4"x17" aeroports, but I really don't know if is loud enought for what I want

here's the pictures of the results

Net Volume after substracting ports and driver

Box 1: 3.044 cu.ft, Tuned to 34 hz (2 aeroports 4"x17") Yellow Line

Box 2: 2,910 cu.ft, Tuned to 43 hz (3 aeroports 4"x17") Red Line

Box 3: 2,777 cu.ft, Tuned to 50 hz (4 aeroports 4"x17") White Line

Music Genre ??? 20% Rock, 30% Reggae, 50% Electronic (Daft Punk, Chemical Brothers)

Some help please...

Click to read more...

 

[4OZGLOVES 10+ year member]

i would go with box #1,It's still going to get quite loud,

 

[mledez 10+ year member]

i would go with box #1,It's still going to get quite loud,

One thing I now noted is the graph of box 1, it appears to be a bandpass box... I need to be loud and do it with some quality...

There's some guy in town that have a Kicker L7 and it sound loud, but wtf if you are near the car the sound is horrible, I don't want to be like that

 

[mledez 10+ year member]

bump

 

[groundpound4200 5,000+ posts]

I like 3 @ 33HZ

 

[mledez 10+ year member]

Poll included

 

[406er 10+ year member]

One thing I now noted is the graph of box 1, it appears to be a bandpass box... I need to be loud and do it with some quality...
There's some guy in town that have a Kicker L7 and it sound loud, but wtf if you are near the car the sound is horrible, I don't want to be like that

ahhh, box #1 appears to be a ported box, not a bandpass. any far as in concerned all of these boxes are not what your looking for. judging by your front end your a SQ guy, so the 3rd box would be best as it has the flattest responce, but you say you want some loud as well. i think if you dead set on 1 of these 3, box 2 would be the best but i think even that sucks. with out modling, i would tune at 38Hz at 3-3.2 cu ft. also with that much power and cone area your should be a low 140 even with a low tuning. my 15" SE on 1.2kw in a 34hz tuned box in my Xcab truck was 139ish, and that pretty loud for a SQ based system u can listen to ALL the time far as im concerned

also bassbox pro slots port length is off, so i would use WINisd and a pen and paper or sketch up

 

[Corey69 10+ year member]

Box 3, even then the graph wont look anything like that once the box is inside your vehicle.

 

[mledez 10+ year member]

Box 3, even then the graph wont look anything like that once the box is inside your vehicle.

So you're saying... That response will be completely diferent once the box is in the trunk ???

 

[mledez 10+ year member]

ahhh, box #1 appears to be a ported box, not a bandpass. any far as in concerned all of these boxes are not what your looking for. judging by your front end your a SQ guy, so the 3rd box would be best as it has the flattest responce, but you say you want some loud as well. i think if you dead set on 1 of these 3, box 2 would be the best but i think even that sucks. with out modling, i would tune at 38Hz at 3-3.2 cu ft. also with that much power and cone area your should be a low 140 even with a low tuning. my 15" SE on 1.2kw in a 34hz tuned box in my Xcab truck was 139ish, and that pretty loud for a SQ based system u can listen to ALL the time far as im concerned
also bassbox pro slots port length is off, so i would use WINisd and a pen and paper or sketch up

I said it appears to be a Bandpass because of the curve in the graph, I modeled them so I know three boxes are Ported not BP.

I think you mean Box #1 flattest response (Yellow Line), you said something about slot ports but I'll use 4" aeroports, I ordered 4 to have some room to test

 

[mledez 10+ year member]

bump

 

[teen 10+ year member]

go 3 cubes net tuned to 35 hz. i voted choice 1 though.

 

[mledez 10+ year member]

go 3 cubes net tuned to 35 hz. i voted choice 1 though.

Do you have port noise ??? with 2 4" precision ports each driver ??

My setup is going to be half of yours, 1500RMS 3 cubes and 2 aeroports 4"...

 

[bonesninja 5,000+ posts]

no reason have several thousand feet of air space in a box....FYI

So i vote #1 since its only a couple feet

 

[mledez 10+ year member]

no reason have several thousand feet of air space in a box....FYI

So i vote #1 since its only a couple feet

Boxes have the same dimensions... the net volume diference is for port displacement