Built into the GM-D7500M is a very smart crossover network. It works like a gateway, routing the big bass signals (adjustable from 40 to 240Hz or lower, at -12dB/octave) and filtering out higher-frequency signals to that subwoofer. This optimizes your system's efficiency and delivers the best possible sound quality.

• Class D amplifier maximizes efficiency while minimizing heat generation
• Extra-compact design for versatile installation
• Selectable 50Hz bass boost controls audio balance
• 800 watts peak music power
• 400 watts x 1, at 4 ohms <= 1% THD+N
• 200 watts x 1, at 2 ohms <= 1% THD+N
• 80 dBA signal-to-noise ratio (Reference: 1 watt output)
• Built-in crossover (40~240Hz low-pass filter)
• Frequency response 10Hz-240Hz
• Speaker level inputs

Retail Box Dimensions: 2.4''H x 10.8''L x 21.6''W Retail Box Weight: 5.7 lbs.