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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.
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Mi spiace per non poter scrivere in inglese... ma sono veramente soddisfatto del servizio offerto. Grazie..!!
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The quality of this manual is good. It has all schematics and setup information for both the MDS-B3 and the MDS-B4. The scan quality is quite good, all pages are readable, This service manual also contains scans of the operating instructions from the User manual.
Technical Manual
ERS 500/520/540
SPECIFICATIONS
ACOUSTIC & ELECTRICAL SPECIFICATIONS:
Nominal Impedance: Power Rating: Crossover Frequencies: Frequency Response: Sensitivity: 4 ohms 10 to 40 watts RMS 6kHz 75Hz-22kHz 85dB 1watt/1 meter
Environmental Reference Series 2-Way Speaker
PHYSICAL SPECIFICATIONS:
1x - 5-1/4" (13.3cm) IMG Speaker Baffle Dimensions: 8"H x 8"W" x 3"D XXXXXXXXXXXXXX XX 20.3x20.3x7.6cm Hole Size Required: 6-7/8"H x 6-7/8"W XXXXXXXXXXXXX XX 17.4x17.4cm Baffle #760-6533 Grille #654-6563 Grille Foam Logo #965-6537 #716-5719
PRODUCTION HISTORY
Introduced in (800:1989) (820:1991) (840:1994) Discontinued (800:1991) (820:1994) (840:1998) Original Retail Price: (800:$250.00/pair) (820/840:$275.00/pair)
NOTE: ERS 500 MUST HAVE A SEPARATE INSTALLATION BRACKET
TECHNICAL INFORMATION
Tweeter #902-4403 Substitute #IF990520-S
REV A
9-98
INFINITY SYSTEMS INC., 250 Crossways Park Drive, Woodbury, New York 11797
ERS 500/520/540 Environmental Reference Series 2-Way Speaker
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