Print Page | Close Window

how many dB from 2 13 inch w6's w/ jl 1000/1

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=30061
Printed Date: May 17, 2024 at 7:19 PM


Topic: how many dB from 2 13 inch w6's w/ jl 1000/1

Posted By: framedragger
Subject: how many dB from 2 13 inch w6's w/ jl 1000/1
Date Posted: April 09, 2004 at 3:33 PM

how much dB should i get from 2 13 inch w6's on a jl 1000/1 dont start flamin cuz my choice, i just need a ball park number. also if i were to put 2 xtant subs on that amp (without the w6's) the octagonal shaped 10's what should i hit if i have the right specs



Replies:

Posted By: forbidden
Date Posted: April 09, 2004 at 3:36 PM
This will depend on more factors than just the sub. It will depend on the box, the type of vehicle, the cd player, the source material used. Most dual 10" or 12" systems should hit mid 130 db's to start with. It will depend if you are building for a spl system or a sq system.

-------------
Top Secret, I can tell you but then my wife will kill me.




Posted By: framedragger
Date Posted: April 09, 2004 at 3:39 PM
well, its in a neon, for one option and an s10 in the other, me and my friend want the jl setup but i was thinkin the 10's also, but everything would be done to specs, and cd players dont effect it that much do they..... and it would either be fiberglass or MDF board




Posted By: robbie2883
Date Posted: April 09, 2004 at 11:37 PM
Go to www.jlaudio.com and look up the sub. At the bottom of the page for each product is a link for a .pdf file with all the specs for the sub. If box's are built to specs. Then you should be able to go by the db levels on the sheet.

-------------
if its jammed force it - if it breaks in the process it needed to be fixed anyway
posted_image




Posted By: haemphyst
Date Posted: April 10, 2004 at 12:58 AM
Also, here is a pretty simple way to figure paek spl of a system. Start with the efficiency rating of the woofer at one watt. Let's say 85dB, and a power handling of 300 watts RMS. How many times does one double before you are at (somewhere around) 300? Well, 1,2,4,8,16,32,64,128,256... STOP. That was 8 doublings, right? each doubling of power will give you 3 dB of output, so 8 (doublings) X 3 (dB per doubling) = 24 dB of total gain, at 256 watts. 85+24=109 dB (± about 1 dB for that remaining 44 watts) for one woofer, and if you have two woofers, you will get an additional 3dB for 112dB, continuous. Also, in a vented enclosure, add 3dB, a bandpass enclosure, add 6dB... It is THAT easy... I do want to add, however that these are anechoic calculations, and cabin gain ("free" sound) will add to these numbers, but at different frequencies for different cars... the smaller the car, the higher the peak cabin gain frequency.

-------------
It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."




Posted By: framedragger
Date Posted: April 10, 2004 at 6:20 AM
well that pretty  much sums everything lol to a ballpark figure posted_imagethanks a lot





Print Page | Close Window