Over the last two months, we've been showing you how to build outdoor-ready speakers for the roof of an RV. This month, we'll cover the installation of these speaker enclosures. The combination of the Alpine SPR-M700 marine coaxials in custom waterproof enclosures gives us a high-quality, durable exterior sound system that will last for years. Send questions to techpanel@sourceinterlink.com with Tricks of the Trade in the subject line, and check out stevebrownuniversity.com.
 After deciding on the right...  After deciding on the right roof location, the area is sprayed down with Aero Prep to remove any oil or dirt. |  The speakers are pre-mounted,...  The speakers are pre-mounted, and the screw holes are pre-drilled. The speaker wires are also run into each enclosure. |  Stainless steel screws with...  Stainless steel screws with flat and lock washers will be used to hold the speaker enclosures on the roof, preventing the possibility of rust. These in combination with the adhesive effect of the silicone will assure that they won't move. |
 An angle screw attachment...  An angle screw attachment like this is very handy for mounting the speaker enclosures, since there's no way to get a drill in the tight confines of the enclosure. |  Four holes are drilled in...  Four holes are drilled in the bottom of each enclosure for mounting screws that will go into the roof of the RV. |  Good-quality clear silicone...  Good-quality clear silicone (we're using GE outdoor silicone) is liberally applied to the bottom of the speaker enclosure. |