The Polk Audio MM691 is a high performance 3-way 6" x 9" speaker that is designed for sport vehicles such as Jeeps and boats. These speakers are based on the flagship SR Series but maintain a competitive price. Key features include Neodymium Magnets(light weight rare earth metal), Carbon Composite Baskets, Woven Glass Composite Cones which offer a high stiffness-to-mass ratio for more precision, Large(30mm)-Diameter Voice Coils for increased power handling, and a power handling capacity of 125w(rms). Stylish grilles are also included.
- Frequency response: 30-25kHz
- Nominal Impedance: 2.7 ohms
- Power Handling(continuous): 125w
- Power Handling(peak): 300w
- Efficiency: 94db
- Mid/Woofer: 6" x 9"
- Midrange: 1" Diameter Tweeter
- Tweeter: 3/4" Diameter Super Tweeter
- Full-range Mounting Depth(top mount): 3 3/16", bottom mount: 3 1/2"