Zak.vr6 Posted June 9, 2014 Report Share Posted June 9, 2014 Hi I'm new and could find a direct e mail I'm from the uk After a lot of searching I decided on going. For the 8m3 the specs say the I need .75 cu ft and the sub takes .25 I'm assuming the 1cu ft box I have will do? It has a L shaped slot port which is 11" deep 2.5" wide and 10" long At the moment and you can see I'm only using an alpine sws8 with a massive 120w rms 120a alternator with a constant 14v And an alpine mrv1005 iirc at4ohms 700 rms Only just had box made as have the sub sat doing nothing for last 4 years So what shall I do with the box? Keep and modify or new box? Also how do know what frequency this box is tuned to? Quote Link to comment Share on other sites More sharing options...
WCA Rusty Posted June 9, 2014 Report Share Posted June 9, 2014 The dis on the m3 8 is .1 =] Quote DC AUDIO Phone Number 1(855)SPL-DBZZ Built by Competitors, for Competitors. Link to comment Share on other sites More sharing options...
Zak.vr6 Posted June 10, 2014 Author Report Share Posted June 10, 2014 (edited) Have you any experience in a larger box? Will it be better at producing the lower frequencies or worse obviously the port will contribute but roughly? Secondly I'm more for sq than spl ,will wiring it to 8ohms be better? Edited June 10, 2014 by Zak.vr6 Quote Link to comment Share on other sites More sharing options...
bbeljefe Posted June 10, 2014 Report Share Posted June 10, 2014 If that's an 8 in the picture, the port is only ~9" tall. And if it's 2.5" wide and 10" long with a net volume of 1 cube, it's tuned to ~63Hz, which is atrocious tuning for a music setup. Not to mention, it's far too much port area for the Alpine sub. As for box volume, yes... a larger box will yield better low end response but depending on the sub, it could also cause a nasty dip above tuning. Also, you won't hear any difference in sound quality between 2Ω & 8Ω wiring. If you were in an anechoic chamber with everything else ideal you might realize some audible improvements but in a vehicle cabin you won't. Quote Facebook: facebook.com/audioanarchyllc Instagram: audioanarchyllc Youtube: youtube.com/bbeljefe Link to comment Share on other sites More sharing options...
White Lightning Posted June 10, 2014 Report Share Posted June 10, 2014 I would throw a few more wood screws and add some wood glue to that enclosure if it was mine. just saying Quote Kenwood / HELIX / Linear Power (For The Love Of Music) / Brutal Sounds / OverKill Electric Co Questions About Sound Quality ?? Try Here ... Sound Quality, What does it REALLY mean ?? SMD SOTM Winner "White Lightning" 1997 GMT400 Chevy Silverado "The Green Dickle" 1994 GMT400 Chevy "Phantom Dually" Randal's 2007 Chevy Avalanche (we haven't named this one yet) Dylan's "Brutal" 17 Chevy Cruze RS Hatch Link to comment Share on other sites More sharing options...
Zak.vr6 Posted June 10, 2014 Author Report Share Posted June 10, 2014 Hi And thank you I was wrong with the sizes it is 9" will double check them tomorrow for rest of box The box was allegedly made to alpine's specs with max recommended box volume Found this link for spec sheet http://www.manualslib.com/manual/619888/Alpine-Swe-843e.html?page=2#manual I didn't get box carpeted for the reason if it was staying or not I have a few test tones and box plays good between 40-60hz?? Quote Link to comment Share on other sites More sharing options...
Zak.vr6 Posted June 13, 2014 Author Report Share Posted June 13, 2014 Right well got tape measure out and the actual box dimensions are 8.5"x8.5"x24 So if I divide that by 1728 the internal vol of the box is a touch over 1cf So with the port i need to add the width of he port and add the size of the mdf x11x8.5 div by 1728 = 0.16 Quote Link to comment Share on other sites More sharing options...
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