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Technical Manual
QB
Quantum Series 3-Way Speaker
SPECIFICATIONS
ACOUSTIC & ELECTRICAL SPECIFICATIONS:
Nominal Impedance: Power Rating: Sensitivity: Crossover Frequencies: Frequency Response: Horizantal Dispersion: 4 ohms 15-150 watts RMS 89dB @ 1 watt, 1 meter 600Hz and 4,000Hz 42Hz-32,000Hz +/-3dB -2dB at 60°, left or right (20kHz)
PHYSICAL SPECIFICATIONS:
1x - EMIT Tweeter 1x - 4" (10.1cm) Midrange 1x - 10" (25.4cm) Q-Woofer Dimensions: 25"H x 14.5"W" x 12"D XXXXXXXXXXXXXXXX XXXXXXXXX63.5cm(H) x 36.8cm(W) x 30.5cm(D) Cabinet Not Sold Grille #A025-038 Crossover NLA Tweeter Level Control #145-0103 Midrange Level Control #145-0103 Logo #716-0319
PRODUCTION HISTORY
Introduced in 1978 Discontinued 1983 Original Retail Price: $396.00/pair
TECHNICAL INFORMATION
EMIT TWEETER #902-0221 TWEETER DIAPHRAGM #751-3722
4" MIDRANGE #902-1166 Substitute #902-0179 10" WOOFER #902-2128 Sustitute #902-2864
FUSE
Original 2� 5W Substitue 5� 5W
BLU/BLK
6.8µF
1.25A AGC
TWEETER
BLUE
12.5µF
1.0mH AIR CORE
5� 5W
WHT/BLK
INPUTS
8.1�
MIDRANGE
WHITE RED
1.5mH IRON CORE
WOOFER
RED/BLK
REV A
7-98
INFINITY SYSTEMS INC., 250 Crossways Park Drive, Woodbury, New York 11797
QB Quantum Series 3-Way Speaker
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