![How loud do you think this C-Pillar wall I designed/built is? 4 15"s. 22000 watts. | Custom subwoofer box, Car audio, Design How loud do you think this C-Pillar wall I designed/built is? 4 15"s. 22000 watts. | Custom subwoofer box, Car audio, Design](https://i.pinimg.com/736x/8e/6f/ee/8e6feec73e269b31bcb65c22a5388b5a.jpg)
How loud do you think this C-Pillar wall I designed/built is? 4 15"s. 22000 watts. | Custom subwoofer box, Car audio, Design
![Low Hertz Car Audio on Twitter: "Check out this badass wall build housing some SSA #ZCON subwoofers! Sounding even better than they looks, these monsters will be sure to throw some wind Low Hertz Car Audio on Twitter: "Check out this badass wall build housing some SSA #ZCON subwoofers! Sounding even better than they looks, these monsters will be sure to throw some wind](https://pbs.twimg.com/media/Eg3WSx0VoAMTmuv.png)
Low Hertz Car Audio on Twitter: "Check out this badass wall build housing some SSA #ZCON subwoofers! Sounding even better than they looks, these monsters will be sure to throw some wind
![My 05 Xterra flat wall. 4 DC Audio custom M1 lvl 6 18s. Tuned low-ish and an absolute demo machine but has still been 160dB@37hz Termlab certified on 20kw : r/CarAV My 05 Xterra flat wall. 4 DC Audio custom M1 lvl 6 18s. Tuned low-ish and an absolute demo machine but has still been 160dB@37hz Termlab certified on 20kw : r/CarAV](https://i.redd.it/0i3cigmgo4061.jpg)
My 05 Xterra flat wall. 4 DC Audio custom M1 lvl 6 18s. Tuned low-ish and an absolute demo machine but has still been 160dB@37hz Termlab certified on 20kw : r/CarAV
![Amazon.com: Monoprice Fiber In-Wall Speaker - 10 Inch (Each) 300W Subwoofer, Easy Installation And Paintable Grill - Caliber Series : Everything Else Amazon.com: Monoprice Fiber In-Wall Speaker - 10 Inch (Each) 300W Subwoofer, Easy Installation And Paintable Grill - Caliber Series : Everything Else](https://m.media-amazon.com/images/I/61R0P30a2ZL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: Monoprice Fiber In-Wall Speaker - 10 Inch (Each) 300W Subwoofer, Easy Installation And Paintable Grill - Caliber Series : Everything Else
![3 - RFL152 SPL competition subwoofers in a custom subwoofer wall | Car audio, Car audio installation, Car audio systems 3 - RFL152 SPL competition subwoofers in a custom subwoofer wall | Car audio, Car audio installation, Car audio systems](https://i.pinimg.com/originals/b8/fb/37/b8fb376d0b54eb498a63bfbbb2e6b43d.jpg)