[. . . ] If you do not have the experience that these procedures require, we strongly suggest you consult your Boston Acoustics dealer about professional installation. Installation: The FX4 can be installed above or below the mounting surface behind factory grilles. Typically, your vehicle will accommodate the FX4 without modification. [. . . ] Connecting the Wires: Connect the factory speaker wire from the amp to the speakers, paying attention to the polarity of the connections. Installation: The FX7 can be installed above or below the mounting surface. Typically, your vehicle will accommodate the FX7 without modification. When the speaker has been correctly mounted, there should be no air leaks between the front and back of the surface that the speaker is mounted to. These instructions explain the basic installation procedure for the FX7, not the exact installation methods to be used in any given case. If you do not have the experience that these procedures require, we strongly suggest you consult your Boston Acoustics dealer about professional installation. If Service Seems Necessary: First, contact the retailer from whom you purchased this product. If that's not possible, contact Boston Acoustics at the address or phone number at the bottom of this page. Connecting the Wires: Connect the factory speaker wire from the amp to the speakers, paying attention to the polarity of the connections. Installation: The FX7e can be installed above or below the mounting surface. Typically, your vehicle will accommodate the FX7e without modification. When the speaker has been correctly mounted, there should be no air leaks between the front and back of the surface that the speaker is mounted to. These instructions explain the basic installation procedure for the FX7e, not the exact installation methods to be used in any given case. If you do not have the experience that these procedures require, we strongly suggest you consult your Boston Acoustics dealer about professional installation. [. . . ] If that's not possible, contact Boston Acoustics at the address or phone number at the bottom of this page. Installation: The FX93 can be installed above or below the mounting surface behind factory grilles. Typically, your vehicle will accommodate the FX93 without modification. [. . . ]