The small-but-mighty 8. Powered Subwoofer packs hard-hitting bass into a discreet, compact enclosure. With a front-mounted woofer, port and an efficient all-digital 100 watt amplifier, the NV-SUB8 adds a detailed low-frequency impact to smaller home theater or audio installations. Its cabinet is constructed of durable MDF for distortion-free bass response. The NV-SUB8 features signal-sensing power activation to automatically turn on the subwoofer when it detects a signal from the receiver. It will return to standby after 15 minutes of no signal. Offering maximum versatility, the Powered Subwoofers were designed to integrate with almost any audio system. Unfiltered LFE / RCA stereo input and output let you easily connect to most modern receivers. And a convenient USB jack can power an optional wireless receiver. The variable crossover and phase adjustments allow you to match the Subwoofer output with the main speakers for premium performance and sound.