One of the most technologically advanced subwoofer amplifiers on the market! This new subwoofer amplifier is based on state-of-the-art Class G circuit topology that combines the proven high power, high fidelity characteristics of a Class AB amplifier with a patented tracking down converter power supply to achieve an operating efficiency up to 86%. You get the efficiency of a Class D amplifier without compromising audio quality and reliability. The class AB output stage provides the clean and low-distortion sound that audiophiles demand, without any instability problems of other high-efficiency amplifier designs. This American designed and engineered amplifier uses patented circuitry that continuously tracks the input signal to modulate or control the voltage available to the output stage. This "tracking" capability delivers the exact amount of power based on demand instead of constantly keeping it in reserve, so the output stage only draws the amount of power that is required at any given time. This means less energy is wasted as heat, and more power is available for the subwoofer driver. Dimensions: 11-15/16" W x 11-15/16" H x 5-1/4" D. Cutout dimensions: 10" W x 10" H.

DISCONTINUED ITEM, DISPLAYED FOR REFERENCE PURPOSES ONLY
THIS HAS BEEN REPLACED BY THE NEWEST MODEL SPA1000.CLICK BELOW FOR DETAILS.

http://www.alpha-electronics.net/proddetail.asp?prod=300-809

The Dayton MA1240 is a freestanding, twelve channel amplifier designed for custom multi-room sound distribution. Its intelligently engineered and versatile design integrates easily into high-end whole house audio systems. A Class AB output circuit delivers superior audiophile sound quality and stable performance. The MA1240 can be stacked with other audio components and includes removable ears for mounting in standard audio racks (2RU). Two common or BUS inputs feed audio signals from standard line-level audio sources to any or all channels. Each of the twelve channels has its own dedicated input and independent level adjustment to provide further flexibility. By simply flipping a single switch, two channels can be bridged to increase the total power output for that zone. This is helpful when extra power is needed in certain areas. Manual, automatic on/off, or triggered 12V input turn-on modes facilitate easy integration into automated systems. For quick and easy troubleshooting of the system, each pair of channels or zones has a bi-color LED to indicate its operational status