The Bose research project resulted in the Energy Efficient Series sound system.

The Energy Efficient Series sound system will address how sound system performance is compromised by power, weight, and the space constraints of new efficient, environmentally responsible vehicles. This engineering achievement preserves Bose standards for clarity, dynamic range and the accuracy, and assists the Volt to attain up to 40 miles of electric-only range.

The company’s engineers focused on the three areas of technology to design Energy Efficient Series sound system: switching amplifiers, high motor force speakers and the digital signal processing circuitry. Small and lightweight, the company’s switching amplifiers drive the new, highly efficient high motor force speakers to offer the acoustic output of heavier conventional speakers. These components combine with the company’s new control circuitry to offer sound reproduction at concert hall volumes, while decreasing the system’s total power consumption by half.

“The Energy Efficient Series sound system represents another ‘first’ in the long-standing relationship between Bose and GM,” said Brandon Westley, president of Bose Automotive Systems. “Together, we introduced the industry’s first premium, factory-installed automotive sound system. Today, we’re proud to be selected as the sound system supplier for the Chevy Volt. We believe the Energy Efficient Series offers a combination of efficiency and performance previously unattainable from an automotive sound system.”