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I am a vintage hifi collector. No way to fix that device without the appropriate service manual...thanks to your site I got it and every thing is easier now. I got the manual right after ordering: fast cheap accurate ... thank you
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Wonderful job clear. Qick fantastic. These people are really good. If even a problem arise they are wonderful assisting you. These scheme is so net despite this is a very old TV. Thank you for everything!!!!!!!!
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Detailed schematic diagram, manual for professionals
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Good service manual,exploded view,adjusment and test point locations,head alignment,mechanical checks and adjusments,all perfect.
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Block diagram,play rec block diagram,adjusments, it's a very good well done repair manual.
Technical Manual
ERS 600/620/640
SPECIFICATIONS
ACOUSTIC & ELECTRICAL SPECIFICATIONS:
Nominal Impedance: Power Rating: Crossover Frequencies: Frequency Response: Sensitivity: 4 ohms 15 to 60 watts RMS 3.8kHz 60Hz-22kHz 85dB 1watt/1 meter
Environmental Reference Series 2-Way Speaker
PHYSICAL SPECIFICATIONS:
1x - 3/4" Polycell Tweeter 1x - 6" (15.2cm) IMG Woofer Baffle Dimensions: 12-3/4"H x 8-3/4"W" x 3-1/4"D XXXXX XX 32.4x22.2x8.3cm Hole Size Required: 11-3/8"H x 7-5/8"W XXXXXXXXXXXXX XX 28.9x19.3cm Tweeter Control #145-0103 Grille Grille Foam Crossover Logo #654-6541 #965-6542 #015-4349 #716-5719
PRODUCTION HISTORY
Introduced in (600:1989) (620:1991) (640:1994) Discontinued (600:1991) (620:1994) (640:1998) Original Retail Price: (600:$300.00/pair) (620/640:$350.00/pair)
NOTE: MUST HAVE A SEPARATE INSTALLATION BRACKET
TECHNICAL INFORMATION
POLYCELL
TWEETER #902-4364A DIAPHRAGM #751-5211
6" WOOFER (800/820:NLA) #902-7291 (840) Substitute #902-4356
6.0µF 5� 5W
10" BLU S/C
0.4mH
24" GRN S/C
TWEETERS
INPUTS
10" BLU/BLK S/C
24" GRN/BLK L/C
0.4mH
21" RED L/C
WOOFER
21" RED/BLK L/C
REV A
9-98
INFINITY SYSTEMS INC., 250 Crossways Park Drive, Woodbury, New York 11797
ERS 600/620/640 Environmental Reference Series 2-Way Speaker
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