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C870 C660 C650
Description 8" Two Way 6
1
⁄2" Two Way 6
1
⁄2" Two Way
LCR Ceiling Speakers LCR Ceiling Speakers LCR Ceiling Speakers
Unit of Measure
Each Each Each
Woofer 8" Kevlar Woofer 6
1
⁄2" Injection Molded Graphite 6
1
⁄2" Polypropylene Woofer
Fixed at a 15˚ Angle Woofer Fixed at a 15˚ Angle Fixed at a 15˚ Angle
Surround Butyl Rubber Butyl Rubber Butyl Rubber
Tweeter 1" Aluminum Dome 1" Aluminum Dome 1" Silk Dome
Pivoting Tweeter Yes Yes Yes
Bass Contour Switch ±3dB No No
Treble Contour Switch ±3dB No No
Voice Coil 1
1
⁄2" 1
1
⁄2" 1"
Magnet Structure 25 Ounce 17 Ounce 12 Ounce
Power Handling 175 Watts 125 Watts 100 Watts
Frequency Response 32Hz-22kHz 36Hz-22kHz 40Hz-20kHz
Sensitivity 92dB 92dB 91dB
Impedance 8 ohms 8 ohms 8 ohms
Diameter x Depth 11
1
⁄8" x 5
7
⁄8" 9
1
⁄4" x 4
9
⁄16" 9
1
⁄4" x 4
9
⁄16"
Ceiling Cut Out 9
7
⁄8" 8
1
⁄4" 8
1
⁄4"
Warranty 10-Year Limited 10-Year Limited 10-Year Limited
940 Columbia Avenue, Riverside, CA 92507
800.448.0976 • Fax 951.787.8747 • proficientaudio.com
PAS00017 (rev3)