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There are currently no product reviews.
 ;
I was having a hard time finding the problem with this Mackie 1604 unit. I didn't have a schematic. Went looking on the web and found your site and the price was more then reasonable. Ordered it and within the hour had the manual and within 15 minutes had the unit fixed. Best $4.99 I ever spent. Thank you.
Doug
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This is a service manual in every sense of the word ( French and German versions of the text are included, as well as English..)
There are explanations of the mechanical and electrical functions, plenty of mechanical drawings, and the needed schematics. The quality of the scanning is excellent - all the component values are clearly legible - and very usefully there are pcb component layouts, so you can find a component on the schematic, and then very quicky pinpoint its physical location on the relevant pcb.
I cannot see how I can give this manual any less than the maximum 5 stars! Great value for money, which will pay for itself immediately. Excellent all round!
 ;
the manual is great and especially hard to find... thanks for the great service and having a hard to find manuel_
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Please tell us what you think and share your opinions with others. Be sure to focus your comments on the product. You will receive $2.50 of store credit for Your review.
 ;
hat alles sehr gut geklappt. Das Servicemaual ist gut zu verwenden. Die Pläne und Schrift
ist klar und leserlich. Außerdem preiswert. Grüße an alle Hifi-Bastler
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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