In 100L with 2 1600
PR's opposing with 1000w flat output of 118db to around 30hz with an f3 of 26.73hz with walls covered. This driver is excellent for downfiring with a sag factor of only .98. You can add some weight to the
PR's to get lower in that volume for the driver reaches xmax around 20hz or simply buy the 2100g
PR's. Either way this will be an awesome small box sub paired with a PE 1000 watt plae amp. Keep us posted if you decide to build it!