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The purchased manual is an high-quality scan of the original JVC paper-based Service Manual. The Service Manual includes the Owner´s Manual, so you do not have to buy both of them.
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It paid to find this Service Manual, couldn't find it anywhere else. Exactly what I wanted. Received within 24 hours.
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Complete manual with clear schematic diagrams and printed circuit board layouts of two variants of the headset and the transmitter an old and a new version.
Also shows how the headset and the transmitter is opened and how transmitter and receivers can be adjusted and where to measure.
I had no problems to repair the headset using this service manual.
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Excellent printing quality. A complete and very useful manual with all details.
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This is a great site. I placed my order and by the next am it was available for download. Had some problems with some missing copy on some pages. Once I brought the error to the OMC's attention, the issue was resolved. I'll come back again.
Technical Manual
QJr
Quantum Series 3-Way Speaker
SPECIFICATIONS
ACOUSTIC & ELECTRICAL SPECIFICATIONS:
Nominal Impedance: Power Rating: Sensitivity: Crossover Frequencies: Frequency Response: Horizantal Dispersion: 4 ohms 20-200 watts RMS 89dB @ 1 watt, 1 meter 600Hz and 4,000Hz 40Hz-32,000Hz +/-3dB -2dB at 60°, left or right (20kHz)
PHYSICAL SPECIFICATIONS:
1x - EMIT Tweeter 1x - 1-1/2" (3.8cm) Dome Midrange 1x - 12" (30.5cm) 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 NLA Crossover NLA Tweeter Level Control #145-0103 Midrange Level Control #145-0103 Logo #716-0312
PRODUCTION HISTORY
Introduced in 1978 Discontinued 1983 Original Retail Price: $778.00/pair
TECHNICAL INFORMATION
EMIT TWEETER #902-0221 TWEETER DIAPHRAGM #751-3722
1-1/2" DOME MIDRANGE #902-0206 12" WOOFER #902-1187
Original 2� 5W Substitue 5� 5W
BLUE
7.5µF
TWEETER
BLU/BLK
FUSE
2.5A AGC
5� 5W 13.6µF 0.5mH AIR CORE 13.6mF
WHT/BLK
INPUTS
MIDRANGE
WHITE RED
3mH IRON CORE
WOOFER
RED/BLK
REV B 8/05
INFINITY SYSTEMS INC., 250 Crossways Park Drive, Woodbury, New York 11797
QJr Quantum Series 3-Way Speaker
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