ShadeTreeMechanic Posted August 24, 2017 Report Share Posted August 24, 2017 Two 15s would be better. Lol 91 C350 Centurion conversion ( Four Door One Ton Bronco) 250A Alternator (Second Alternator Coming Soon) G65 AGM Up Front / Two G31 AGM in Back Pioneer 80PRS CT Sounds AT125.2 / CT Sounds 6.5 Strato Pro component Front Stage CT Sounds AT125.2 / Lanzar Pro 8" coax w/compression horn tweeter Rear Fill FSD 5000D 1/2 ohm (SoundQubed 7k Coming Soon) Two HDS315 Four Qubes Each 34hz (Two HDC3.118 and New Box Coming Soon) Link to comment Share on other sites More sharing options...
dudeogo Posted August 24, 2017 Report Share Posted August 24, 2017 14 hours ago, mike12 said: running 2 sa 12s in a box tuned to 34 hz but it dies off at like 28hz and it is loudest around 40 I had one SA 15 in a ported box in the trunk of my bonneville tuned to 34 hz and youre right the lows were shat below about 30-28. Stick with your two 12s just build a lower tuned box and/or 4th order. you want lows? do a 4th order with the port tuned to about 35 and the lows will be nuts! Not near as much upper bandwidth obviously though! Stage 3 2008 Mazdaspeed 3 MIDS/HIGHS BASS 8 Unlawful Sounds Mark VIIIs 2 15s (in talks with a few companies) 8 Unlawful Sounds Super Tweeters Soundigital EVO 5000 Amps: Something Brazilian Link to comment Share on other sites More sharing options...
mike12 Posted August 24, 2017 Author Report Share Posted August 24, 2017 17 hours ago, Triticum Agricolam said: You will most likely be better off with two 12"s vs one 15". What are the specs of the box? Net volume and port area? How much power are you running? Net volume 4cuft port area is around 65sqin running 2k on good electrical Link to comment Share on other sites More sharing options...
mike12 Posted August 24, 2017 Author Report Share Posted August 24, 2017 4 hours ago, dudeogo said: I had one SA 15 in a ported box in the trunk of my bonneville tuned to 34 hz and youre right the lows were shat below about 30-28. Stick with your two 12s just build a lower tuned box and/or 4th order. you want lows? do a 4th order with the port tuned to about 35 and the lows will be nuts! Not near as much upper bandwidth obviously though! Problem is i have limited space my trunk is small i have my box in there now at 4cuft net and it is about all i got Link to comment Share on other sites More sharing options...
Wishuponasub Posted August 24, 2017 Report Share Posted August 24, 2017 Where there is a Will there is a way. Wall it. Lol Sitting around waiting to be installed: 4 FI X 10 270 CES alt D3400/73ah lithium AA 3800.1 (2) AA 75.4 Link to comment Share on other sites More sharing options...
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