Part 7 - ATV Subwoofer - Added 3 inch ports to the ATV Subwoofer Box to reduce port noise.

We have added 3-inch ports to the ATV subwoofer box to reduce the port noise, but we have to wait for the silicone to dry before we can test it. The ports are only 6 inches long right now, this should be tuned at 66hz, but once I add the extensions It should be tuned at 44hz which should be great for rock. Port tuning is 55hz, per WinISD this thing should make some pretty good SPL. Right now 11dB gain, 0dB at 41hz and hitting 0dB again at 121hz with the crossover set at 120hz. Boss AR1500M ARMOR 1,500-Watt Mono Mosfet Amplifier 1500 W MAX Power, 1 Channel 1125 W X 1 RMS @ 2 ohm 563 W X 1 RMS @ 4 ohm Monoblock, Class A/B, MOSFET Power Supply High and Low Level Inputs Variable Low Pass Crossover, Switchable Bass Boost Remote Subwoofer Control TS-W261D4 NEW! - 10" Champion Series Subwoofer with Dual 4 Ohm Voice Coil IMPP Composite Cone Dual-Layer Elastic Polymer Surround Single Piece Basket Design Pioneer's IMPP Composite Cone is newly re-designed to deliver a durable cone structure for accurate, yet powerful bass. The subwoofer now provides a single piece cone and drive cone, in addition to a lightweight and rigid dust cap. This combination offers more rigidity throughout the cone versus competitors in its class. An extremely durable, yet lightweight cone is vital to prevent cone failure at high sound pressure levels. SINGLE PIECE BASKET The TS-W261D4 utilizes a highly rigid, fully-enclosed, single piece basket, derived from our world-record holding SPL competition subwoofers, to help minimize the vibration throughout the subwoofer and increase the driving force to the cone, producing louder and rhythmical bass. Improved stiffness of the basket provides for less sound leaks creating more clear and powerful bass. With the TS-W261D4, engineers re-designed the spider assembly to allow the subwoofer to produce more accurate and rich bass. Taking notes from our high-end SPL competition and Reference Series speakers, the spider is now assembled onto the spider holder rather than directly on to the basket. Since the cone is also assembled onto the basket which can cause additional vibration, the independent structure of the spider holder helps minimize vibration coming from the cone. This improves playback response, sound outline, and provides high linearity. COOLING AND VENTILATION All fast moving parts and friction will create heat and too much heat creates unwanted audio results. The TS-W261D4 is designed with ventilation holes to improve air flow and release heat keeping the piston cool for better performance.