Rockustics - Subscape 10 - 10" In-Ground Band-Pass Subwoofer The Subscape 10 is a direct-burial, 10” subwoofer to complement Periscape speakers. With 250 watts (RMS) of power handling, it is an ideal companion to Periscape spike-mount speakers. Once installed, the only visible part of the speaker is a discreet, brown vent cap. One Subscape subwoofer is suitable for installations of up to 7 Periscape units; additional subwoofers are recommended for larger installations. The Subscape 10 may also be used with other Rockustics speakers or other outdoor products. A built-in transformer provides convenience for 70V installations; the subwoofer may also be operated in 8 ohm direct mode.