Rockville RTB80A 8" Tubed Powered Subwoofer — 400W Peak / 200W RMS, Built-in 250W RMS Amp, MP3 Input

A compact, vented tube subwoofer from Rockville: the RTB80A pumps out 400 Watts peak and 200 Watts RMS while featuring an integrated, built-in amplifier rated at 250 Watts RMS. Its 8" high‑power woofer sits in a tubular, vented enclosure with a rear aero-vent bass system for tighter low-end response. Inputs include speaker-level and RCA line-level connections, plus an MP3 input for direct playback. Sound specs: frequency response 30Hz-200Hz and sensitivity 105 dB, with an adjustable bass crossover to tailor the output. The woofer is protected by a molded steel grill. Mounting and installation are simplified with four steel mounting brackets and two canvas straps with Velcro fasteners. The tube is wrapped in durable aviation-grade tweed and finished with an embroidered Rockville logo. Dimensions: 8.75" x 19".