StigA Posted November 7, 2014 Author Report Share Posted November 7, 2014 Thanks guys!! I want to try this since its alittle different. A 4th order would also been a option.. but with a regular wall with the subs facing forward I guess 4x 15"s or 2x 18"s will look best in this car. Maybe 16x 8"s? But as you mention, the subs facing each other, in the port.. it will maybe be a problem? Otherwise I got my Hertz HDP4 amp today, a small little beast! Link to comment Share on other sites More sharing options...
bcbrassard Posted November 7, 2014 Report Share Posted November 7, 2014 Nice equipment, tuned in for sub build. Link to comment Share on other sites More sharing options...
ToNasty Posted November 8, 2014 Report Share Posted November 8, 2014 were did you get the LIB 3500 from? ***Super Sellers List***http://www.stevemeadedesigns.com/board/topic/25829-super-sellers-buyers Link to comment Share on other sites More sharing options...
Larry Milbury Posted November 8, 2014 Report Share Posted November 8, 2014 I'm not sure how that box will work. Maybe if you had 2 amps for the subs and ran one side(4 subs) normal phase and the other side(4 subs) 180 degree phase, but all 8 off the same amp looks like cancelation to me, but I'm no expert. Link to comment Share on other sites More sharing options...
timc31610 Posted November 9, 2014 Report Share Posted November 9, 2014 I would see it cancelling the way you mentioned. If the left half were out of phase from the right half as one side pulled in the other would push out. My Build Log 94 Civic http://www.stevemeadedesigns.com/board/topic/188644-94-civic-4-door-build-loq-suggestions-wanted-will-be-super-slow-mo/ Faceebook reluctantly Link to comment Share on other sites More sharing options...
jk13 Posted November 10, 2014 Report Share Posted November 10, 2014 Been done with success, but you're right there are potential issues. Have to be pretty spot on with tuning and distances for it to work perfectly (but that's the case in any box). Here's one discussion: http://www.diyaudio.com/forums/subwoofers/242321-dual-opposed-slot-loaded-port.html And yes, you'd run them all in phase. Could eliminate most pitfalls by angling the baffles out in a clamshell, those are more forgiving. Of course you'll have the modify the port to get back to your tuning frequency. Static drops are my bag. Link to comment Share on other sites More sharing options...
StigA Posted November 10, 2014 Author Report Share Posted November 10, 2014 Thanks again! Appreciate your help and suggestion about the build. jk13: I've been thinking of angling the baffles. Most clamshell builds have good angle, but never seen a straight one like this... but there is maybe a reason for it. Test fit one of the door pods, looks okay. I damaged the carpet on the other one while drilling a hole, so need to wrap it again.. Next up is the big three, speaker wiring to the doors and start with sound deadning. Link to comment Share on other sites More sharing options...
IH8PunkRok Posted November 10, 2014 Report Share Posted November 10, 2014 I did a box similar to this in my mustang. Was extremely quiet but played all the lows. Was a fun box -Matt2005 Dodge Magnum RTJVC KD-AVX1 2 PPI S580.2 Obsidian Audio ST1 Horn Tweeters PRV 8MB450s Audio Legion 3500.1D 2 RE MT 18s 360 ah LiFePO4 BatterySHCA 2/0 155.2 @ 29 hzKicker CVR 15's buildDD 3512e buildMini T-Line Build(6) 8s BuildNightshade 15s Wall BuildMagnum AB XFL 12s BuildNewest Magnum Build Link to comment Share on other sites More sharing options...
StigA Posted November 10, 2014 Author Report Share Posted November 10, 2014 IH8PunkRok: How big was your box, and tuning? And when you say quiet, what hz range do you mean? I hope to make mine play the lows good.. not sure how these subs will work, but I'll find out Got the other doorpanel in, also got some cheap fuseholders in the mail today. Link to comment Share on other sites More sharing options...
IH8PunkRok Posted November 10, 2014 Report Share Posted November 10, 2014 I had 6 8s on 2k. I think the box was around 3.5 cubes don't really remember I had it tuned to 34 but I neglected to include the tunnel effect so it was probably much lower. Anyway I don't believe I metered it but I know I played a song that got down to 23 hz full tilt everyday I know it wasn't louder than a 140 though -Matt2005 Dodge Magnum RTJVC KD-AVX1 2 PPI S580.2 Obsidian Audio ST1 Horn Tweeters PRV 8MB450s Audio Legion 3500.1D 2 RE MT 18s 360 ah LiFePO4 BatterySHCA 2/0 155.2 @ 29 hzKicker CVR 15's buildDD 3512e buildMini T-Line Build(6) 8s BuildNightshade 15s Wall BuildMagnum AB XFL 12s BuildNewest Magnum Build Link to comment Share on other sites More sharing options...
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