One hit wonder enclosures

 

Bronze Member
Username: Alexv3305

Tavernier, FL United States

Post Number: 26
Registered: Mar-06
Can someone explain how to create serious SPL enclosures such as one-hit-wonder enclosures? My friend is a carpenter and I am going to have him make me a custom enclosure I just need to know how to calculate the dimensions for one.
 

Gold Member
Username: 54danny54

Betsy layne, Kentucky..GO... USA duh

Post Number: 2142
Registered: Nov-04
look up 6th order bandpass enclosures...very hard to implicate....and sound like complete crap, they play maybe 3 notes that sound halfway decent
 

Bronze Member
Username: Alexv3305

Tavernier, FL United States

Post Number: 27
Registered: Mar-06
oh so this means the rear chamber produces frequency as the front chamber?
 

Gold Member
Username: Southernrebel

Monroe, Louisiana USA

Post Number: 2601
Registered: Mar-04
If you are looking at building an SPL box...go w/ a ported box. Unless you know ALOT about boxes, bandpasses are going to be like advanced calculus to an 8th grader...lol.

a really good way to get a one note wonder in a vehicle is to tune a ported box just below the vehicles resonance freqency. that way the sub will peak at your vehicles peak freq.

from there you will want to look at box position, box size, port size, subs, and about 100 other things. but by far, getting a vehicle loud is trial and error. Get on a SPL meter and test, test, test, and test some more.

what kind of vehicle are you using? subs? amps?

 

Bronze Member
Username: Alexv3305

Tavernier, FL United States

Post Number: 28
Registered: Mar-06
I am using a 1997 Ford Crown Victoria. I have two Kicker L5 15 inchers and a Soundstream PCA2000D wired @ 1 ohm. The L5s are in a ported box tuned to 35hz with 2.5 cubic feet per chamber.
 

Gold Member
Username: Southernrebel

Monroe, Louisiana USA

Post Number: 2606
Registered: Mar-04
2.5cuft for L5 15's...thats alil small man. I would deffinitly go to a larger box...at least 3.5cuft per 15".

I did an install a lil while back w/ 2 L5 15's in an ext cab ford ranger...it has interchangable ports so it can be tuned to 35hz for daily and 52hz for SPL comps. We ended up doing 148.0db on the Termlab w/ this install at the very first comp w/ only ~1000wrms!

If you can get a ~8cuft box in your truck...try that. If you want to use the box for both daily and SPL comps...build it w/ interchangable ports. Here is alil how-to guide i did while building the box for the ford range i talked about above:

http://www.cardomain.com/ride/650399/6

for daily, tune to ~32-35hz...try 45hz for the SPL port. If you have access to an SPL meter...try to find you cars resonance freqency.
 

Bronze Member
Username: Alexv3305

Tavernier, FL United States

Post Number: 33
Registered: Mar-06
how do i find resonance freqency?
 

Gold Member
Username: 54danny54

Betsy layne, Kentucky..GO... USA duh

Post Number: 2147
Registered: Nov-04
get a sub and put it in a sealed box. Now get a termlab microphone. Play tones in 5-10Hz incriments and place the mic at different parts of the car (i.e. kick panels, wind sheild, passenger seat...etc)average the numbers from the diff frequencies and then lets say it peaked out most at 40Hz...play from 30-40Hz in the different spots again and see what the exact loudest frequency is
 

Bronze Member
Username: Alexv3305

Tavernier, FL United States

Post Number: 34
Registered: Mar-06
ok thanks
 

Gold Member
Username: B101

Queen City, NC USA

Post Number: 2145
Registered: Sep-05
:-) yeah, what havoc said for the most part. Its really alot to calculate the resonate freq of a car..
 

Platinum Member
Username: Glasswolf

Wisteria, Lane USA

Post Number: 11461
Registered: Dec-03
http://www.diysubwoofers.org/bnd/6thorder.htm
« Previous Thread Next Thread »



Main Forums

Today's Posts

Forum Help

Follow Us