NSTALN 10+ year member
Dismember
OK ported box gurus...I have a new truck, a 2019 Nissan Frontier Crew-cab. I has very little space under the rear seat but I should be able to shoe-horn a Sundown SD4-12d4. Sundown only recommends sealed...but I was curious what sort of a ported enclosure y'all might come up with. I'll only be able to squeeze about 1.25 to 1.5 cubes total so a ported 12 may be unrealistic. I'll also post the TSP's for the 10 which may be a better choice.
The key here is smallest ported enclosure tuned low...I only intend to feed the sub 500rms via a JD HD 900/5
Re - 7.0052ohms
Fs - 26.7489hz
Qes. - .7374
Qms - 5.5061
Qts - .6503
Le - 8.6610mh (@ 1khz)
Sd - 78.5398 in^2
Vas - 64.3194 L
BL - 17.9033
Mms - 200.754g
Cms - 176.3448 uM/N
Sensitivity - 83.9731 db @1w/1m
Sensitivity - 84.5498 db @2.83Vrms/1m
Thanks folks!
Just to clarify...I'm not looking for exact dimensions to fit under my seat, I'm looking for airspace/tuning/port recomendations specific to the sub...I'll figure out the logistics of making it fit later.
The key here is smallest ported enclosure tuned low...I only intend to feed the sub 500rms via a JD HD 900/5
Re - 7.0052ohms
Fs - 26.7489hz
Qes. - .7374
Qms - 5.5061
Qts - .6503
Le - 8.6610mh (@ 1khz)
Sd - 78.5398 in^2
Vas - 64.3194 L
BL - 17.9033
Mms - 200.754g
Cms - 176.3448 uM/N
Sensitivity - 83.9731 db @1w/1m
Sensitivity - 84.5498 db @2.83Vrms/1m
Thanks folks!
Just to clarify...I'm not looking for exact dimensions to fit under my seat, I'm looking for airspace/tuning/port recomendations specific to the sub...I'll figure out the logistics of making it fit later.
Last edited: