Phaeton Posted September 18, 2014 Report Posted September 18, 2014 A lot of people told me two 18's wouldnt fit in my trunk. Still did it and its turing out pretty good, But if it fucks up i'll be a man and post how i fucked up. Nothings impossible, sure, you can get four 12's in your trunk, but how will it sound? If you do go though with it, post videos and updates, Even if your wrong. 1997 subaru legacy outback Four 15's in a almost wall Rockford Fosgate t2500-1bdcp Rockford Fosgate T400-4 on tweets Rockford Fosgate T400-4 on highs Rockford Fosgate T400-2 on midrange Rockford Fosgate T400-2 on midbass Optima Yellow top batteries 270A Singer alt (working on a bracket for a second) Lots of Second Skin
T2bumper Posted September 18, 2014 Author Report Posted September 18, 2014 A lot of people told me two 18's wouldnt fit in my trunk. Still did it and its turing out pretty good, But if it fucks up i'll be a man and post how i fucked up. Nothings impossible, sure, you can get four 12's in your trunk, but how will it sound? If you do go though with it, post videos and updates, Even if your wrong. i will continue posting either way because im learning just like everyone else but im gunna go for an isobaric box 1 dc level 5 15 t2500-1bd Rockford 10 farad hybrid capacitor 4 rockford pro punch mids 2 pro punch super tweeters Both on pro punch rockford crossovers T400-4 (speaker amp) 30ft sky high 1/0 20 ft rockford 1/0 xs d3400 xs d1200 stock batt under hood 200 sqft fat mat kenwood kvt-516 flip-out and 70ft Sky high 14gauge speaker wire
MotorCityFats13 Posted September 18, 2014 Report Posted September 18, 2014 when you do isobaric you do a push pull polarity setup so when one pushes out the other moves with it... if you wire it so they fight they would cancel out.... just thought I would mention this since no body answered your question.... taking others trial and error will help alot with design failures but sometimes you find an anomaly in where it worked for you...still to this day people argue about what way to face a sub in a trunk ive done it every way and depending on how free the air moves the bass curve develops differently.... personally speaking if I was to do a 4 12" setup in a trunk I would look in to either a sealed ported combo or 2 different sized ported boxes one for spl and one for tighter bass.... this way your passband will be wider if you are looking for all around music.... maybe tune one for 28-32hz and one for 35-40hz
T2bumper Posted September 18, 2014 Author Report Posted September 18, 2014 when you do isobaric you do a push pull polarity setup so when one pushes out the other moves with it... if you wire it so they fight they would cancel out.... just thought I would mention this since no body answered your question.... taking others trial and error will help alot with design failures but sometimes you find an anomaly in where it worked for you...still to this day people argue about what way to face a sub in a trunk ive done it every way and depending on how free the air moves the bass curve develops differently.... personally speaking if I was to do a 4 12" setup in a trunk I would look in to either a sealed ported combo or 2 different sized ported boxes one for spl and one for tighter bass.... this way your passband will be wider if you are looking for all around music.... maybe tune one for 28-32hz and one for 35-40hz how do you wire them so one hits before the other 1 dc level 5 15 t2500-1bd Rockford 10 farad hybrid capacitor 4 rockford pro punch mids 2 pro punch super tweeters Both on pro punch rockford crossovers T400-4 (speaker amp) 30ft sky high 1/0 20 ft rockford 1/0 xs d3400 xs d1200 stock batt under hood 200 sqft fat mat kenwood kvt-516 flip-out and 70ft Sky high 14gauge speaker wire
TRON Posted September 18, 2014 Report Posted September 18, 2014 when you do isobaric you do a push pull polarity setup so when one pushes out the other moves with it... if you wire it so they fight they would cancel out.... just thought I would mention this since no body answered your question.... taking others trial and error will help alot with design failures but sometimes you find an anomaly in where it worked for you...still to this day people argue about what way to face a sub in a trunk ive done it every way and depending on how free the air moves the bass curve develops differently.... personally speaking if I was to do a 4 12" setup in a trunk I would look in to either a sealed ported combo or 2 different sized ported boxes one for spl and one for tighter bass.... this way your passband will be wider if you are looking for all around music.... maybe tune one for 28-32hz and one for 35-40hz how do you wire them so one hits before the other It's not "one hits before the other" One driver is out of phase, it's wired up backwards to the amplifier. Avalanche Alpine Type S comps Alpine Type S 10'' Alpine MPR-F300 Alpine MRX-M50 Mechamn 270 XS Power d3400s
T2bumper Posted September 18, 2014 Author Report Posted September 18, 2014 so one's wiring lets just say positive to positive then negative to negative and the other sub is positive to negative and negative to positive? 1 dc level 5 15 t2500-1bd Rockford 10 farad hybrid capacitor 4 rockford pro punch mids 2 pro punch super tweeters Both on pro punch rockford crossovers T400-4 (speaker amp) 30ft sky high 1/0 20 ft rockford 1/0 xs d3400 xs d1200 stock batt under hood 200 sqft fat mat kenwood kvt-516 flip-out and 70ft Sky high 14gauge speaker wire
T2bumper Posted September 18, 2014 Author Report Posted September 18, 2014 will i be able to wire them both to the same mono block on the amps at 2 ohm, 2 subs per amp and at 2 ohm. im reading everything about it and still am a little confused. 1 dc level 5 15 t2500-1bd Rockford 10 farad hybrid capacitor 4 rockford pro punch mids 2 pro punch super tweeters Both on pro punch rockford crossovers T400-4 (speaker amp) 30ft sky high 1/0 20 ft rockford 1/0 xs d3400 xs d1200 stock batt under hood 200 sqft fat mat kenwood kvt-516 flip-out and 70ft Sky high 14gauge speaker wire
TRON Posted September 18, 2014 Report Posted September 18, 2014 I can't say without drawing a diagram, but it could get confusing with dual voice coils. Say if you had two single four ohm woofers...you'd wire one to the amplifier in polarity (+ to + and - to-) and the second in revers (+ to - and - to +) you'll still have a two ohm load, but the reversed woofer is out of phase. Avalanche Alpine Type S comps Alpine Type S 10'' Alpine MPR-F300 Alpine MRX-M50 Mechamn 270 XS Power d3400s
Deeznutz Posted September 18, 2014 Report Posted September 18, 2014 what is a small 12? do you actually have 10s or 8s? LMFAO -Frank
gckless Posted September 18, 2014 Report Posted September 18, 2014 when you do isobaric you do a push pull polarity setup so when one pushes out the other moves with it... if you wire it so they fight they would cancel out.... just thought I would mention this since no body answered your question.... taking others trial and error will help alot with design failures but sometimes you find an anomaly in where it worked for you...still to this day people argue about what way to face a sub in a trunk ive done it every way and depending on how free the air moves the bass curve develops differently.... personally speaking if I was to do a 4 12" setup in a trunk I would look in to either a sealed ported combo or 2 different sized ported boxes one for spl and one for tighter bass.... this way your passband will be wider if you are looking for all around music.... maybe tune one for 28-32hz and one for 35-40hz Wut. "Clipping" is the biggest forum boner now. It's like witchcraft... it automatically explains just about everything people don't understand. My build log: http://www.stevemeadedesigns.com/board/topic/200295-gckless-2011-chevrolet-impala/ High resolution photos: Gilbert Kless Photography
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