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shared ports, airspace

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=135939
Printed Date: April 29, 2024 at 11:20 PM


Topic: shared ports, airspace

Posted By: 04nata
Subject: shared ports, airspace
Date Posted: January 28, 2014 at 12:44 PM

Running 4 Niche Audio NW15E, with 2- (1 per pair of subs @ 2 ohm) JL Audio JX1000d

Note: current setup is in my signature, sealed boxes, seperate at 2cuft per sub hitting clean at 143db

I want to go vented and I am doubling the sub power (adding another JL JX1000d)

The specs say to have 5cu ft for each sub and tune at 42hz with a 6"D x 3"L port

So my question's are, as below, because I trust your input. (btw, I do like these subs so please don't waste space saying "buy different subs)

With 2 amps would it be better so have

seperate boxes and ports for each sub?

1 box and port per pair of subs?

1 big box and port for all 4?

OR

Stick with sealed boxes and increase to 3.25cuft per sub which they state will get me +5db/66 (see specs as published below

 Tight Bass / SPL Extended Bass     
      BOX   SIZE         Dimensions   BOX   SIZE        Dimensions         
(Cub ft.)   F3 Hz   Gain dB        W x H x D     (Cub ft.)   F3 Hz    Gain dB W x H x D

      
NW15E          1.85         51  +6 / 75Hz     20.0 x 17.0 x 10.5   3.25         40    +5 / 66Hz          25.0 x 17.0 x 13.25

I tune the amps to JL specs with a multimeter and each sub will be at 500watts, and are rated for 600rms

I don't just want loud bass, because my highs are really good



-------------
2004 Hyundai Sonata
Kenwood KDC-X599 HU
2-Sundown X-18D4
2-SQ Q4500.1
2-SQ Q90.4
1-Massive DBX4
8-Niche 5.25 mids
8-Niche Tweeters
4-Skar 8" mid-bass
OhioGen 220a alt
OhioGen 350a alt
156.0



Replies:

Posted By: dustin arnold
Date Posted: January 28, 2014 at 8:30 PM
go ported im not a box builder but i love beat the way you do and sealed is never a answer




Posted By: dustin arnold
Date Posted: January 28, 2014 at 8:32 PM
you can just use 2 15z ported and give me the other 2 and you only need one amp





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