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Audio Technologies Incorporated DA1008, Operating And Maintenance Manual

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Audio Technologies Inc. | 154 Cooper Road #902 | West Berlin, NJ 08091 | Voice 856-719-9900 | Fax 856-719-9903 | www.

 

audio.com 

 

© Copyright 1997-2007, Audio Technologies Incorporated - Printed in USA

DA1008 AND DA2016 

DISTRIBUTION AMPLIFIERS

 

 

OPERATING AND MAINTENANCE MANUAL 

Summary of Contents for DA1008

Page 1: ...Cooper Road 902 West Berlin NJ 08091 Voice 856 719 9900 Fax 856 719 9903 www audio com Copyright 1997 2007 Audio Technologies Incorporated Printed in USA DA1008 AND DA2016 DISTRIBUTION AMPLIFIERS OPERATING AND MAINTENANCE MANUAL ...

Page 2: ...otection A balance Potentiometer R7 allows setting a precise null for common mode hum inputs The second half of Al monitors the differential voltage appearing across the input terminals of the input buffer IC to detect clipping The input clip LED on the front panel will light if audio inputs in excess of 26dBm peak OUTPUTS Audio from the input buffer feeds eight output level adjusts potentiometers...

Page 3: ... 12 and Rl 11 POWER SUPPLY AND MONITOR BOARD MONITOR AND METERING Monitor inputs from the amplifier boards are applied to analog multi plexers A8 output group A and A9 group B through connectors P5 and P6 respectively The multi plexer outputs are summed and applied to a two channel headphone amplifier A4 designed to individually drive the tip and ring of stereo headphones A front panel level contr...

Page 4: ...nd left out for everyone to see since it is so pretty You can also stack DAs on top of each other We don t recommend stacking over 30 high on a desk unless you are over 8 feet tall WIRING The AC ground wire can cause a ground loop with your station ground If you are sure your station ground will provide adequate protection to personnel in case of an AC line short to chassis a 3 to 2 AC adapter can...

Page 5: ...ment 6 indicates the typical clipping point of the output stage and the meter functions as a headroom indicator The common mode adjustment pot on the amplifier board R7 is factory set for a 80dB null at 60Hz If disturbed it can be readjusted by applying a common mode 60 Hz input to Hi and Lo inputs together referenced to ground and renulling R7 The null typically drops to 40dB at 20kHz due to slig...

Page 6: ...4 5 H x 10 5 267 D 15 lb 7Kg METERING Electronic SCAN switching 12 segments 3 color peak reading LED VU indicator 0 VU selectable to 4 8 or 1 8dBm by front panel switch LED channel indicator HEADPHONE OUTPUT 20 volt p p output to 600 ohm phones 30mW output to low impedance phones MOUNTING Suction feet for non slip desk mounting Rack mount system 21075 501 mounts two units in one rack CONNECTORS Hi...

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