Electro-voice 1783 EDS specification and instructions

General Product Description

Output Module. The Electro-Voice® 1783 line output

module provides the drive capability necessary to
interface with other professional equipment. The
electronically balanced output stage provides a low
source impedance to drive subsequent stages. If
transformer isolation is necessary, the module’s circuit
board accommodates the optional PC-mount 1786
output isolation transformer. The continuously variable
output level control is local to the module permitting
independent adjustment of each line output.

Architects’ and Engineers’ Specifications

The line output module shall have a low source
impedance, continuous variable gain, and the capability
for adding a 1786 output isolation transformer. In
addition, the module shall be fully compatible with the
1700-series mixer/preamplifier and mixer/power
amplifier mainframes, and accept any one of the 1790
series input connectors.

Specifications:

Output Type: ............................................. Electronically balanced

Output Source impedance: .......................................... <50 ohms

Nominal Output Level/Load impedance: ...... +8 dBm/600 ohms

(Ref. 1 kHz, 0 dBm = 0.775 Vrms across 600 ohm load, output level
control at maximum, 100 mVrms input)

Maximum Output Level: ................................................. +24 dbm

Frequency Response (Ref. 1 kHz, +8 dBm output)

Without 1786

±1 dB .............................................................. 20 Hz - 25 kHz

±3 dB .............................................................. 10 Hz - 50 kHz

Without 1786

±1 dB .............................................................. 30 Hz - 20 kHz

±3 dB .............................................................. 15 Hz - 40 kHz

Total Harmonic Distortion (THD): (Ref. 1 kHz, +8 dBm output,
output level control at maximum, 30 kHz low pass filter)

Without 1786

20 Hz - 20 kHz............................................................ <0.05%

Without 1786

20 Hz - 20 kHz.............................................................. <0.1%

Signal-to-Noise Ratio: .................................................... >88 dBm

(Below +8 dBm output, output level control at maximum,
A-weighted)

1783

Line Output

Module

COMMERCIAL

The line output module shall meet the following
performance criteria. Gain: 26 dB, continuously variable.
Frequency response: 50 Hz to 20 kHz, ±1 dB. Output
source impedance: <50 ohms; Noise floor: <-80 dBm.
Total Harmonic Distortion (THD): <.05%, (<.1% with

1786), Ref. 1 kHz, +8 dBm output, 30 kHz low pass
filter.

The line output module shall be the Electro-Voice Model

1783.

Control: ...................................................... 1 - Output level control

Weight (Net): ............................................................. 2.2 oz (63 gr)

Power Requirements: .................................... ±18 VDC at 20 MA.

(Supplied by mainframe)

Included Accessories: .................................. 2 - mounting screws

.............................................................. (for potentiometer bracket)

Optional Accessories: ........... 1786 Output Isolation Transformer

1786 OUTPUT ISOLATION TRANSFORMER

Impedance Ratio: ............................................. 600 ohm:600 ohm

....................................................................(Primary: Secondary)

Frequency Response: (Ref. 1 kHz, +18 dBm output)

±1 dB ................................................................ 20 Hz - 20 Hz

±3 dB ................................................................. 10 Hz - 40Hz

Total Harmonic Distortion (THD): (Ref. 1 kHz, +18 dBm output)

20 Hz - 20 Hz ............................................................... <0.5%

50 Hz - 20 Hz ............................................................... <0.1%

Insertion Loss: ..................................................................... <1 dB

(Ref. 1 kHz, +18 dBm output)

Specifications are subject to change without notice.

1791 1792 1793 1794

Connectors for use with 1783

USA 12000 Portland Ave South, Burnsville, MN 55337, Phone: [phone], FAX: [phone]
Canada 705 Progress Avenue, Unit 46,Scarborough, Ontario, Canada, M1H2X1,Phone: [phone], FAX: [phone]
Switzerland Keltenstrasse 11, CH-2563 IPSACH, Switzerland, Phone: [phone]. FAX: [phone]
Germany Hirschberger Ring 45, D94315, Straubing, Germany, Phone: [phone], FAX: [phone]
France Parc de Courcerin, Alle Lech Walesa, Lognes, 77185 Marne La Vallee, France, Phone: [phone], FAX: [phone]
Australia Unit 23, Block C, Slough Business Park, Slough Avenue, Silverwater, N.S.W. 2128, Australia, Phone: [phone], FAX: [phone]
Hong Kong Unit E & F, 21/F, Luk Hop Industrial Bldg., 8 Luk Hop St., San PO Kong, Kowloon, Hong Kong, Phone: [phone], FAX: [phone]
Japan 2-5-60 Izumi, Suginami-ku,Tokyo, Japan 168, Phone: [phone], FAX:[phone]
Singapore 3015A Ubi Rd 1, 05-10, Kampong Ubi Industrial Estate, Singapore 408705, Phone: [phone], FAX: [phone]
Mexico Av. Parque Chapultepec #66-201, Col. EI. Parque Edo. Mex. 53390, Phone: [phone], FAX: [phone]
UK 4, The Willows Centre, Willow Lane, Mitcham, Surrey CR4 4NX, UK, Phone: [phone], FAX: [phone]
Africa, Mid-East 12000 Portland Ave South, Burnsville, MN 55337, Phone: [phone], FAX: [phone]
Latin America 12000 Portland Ave South, Burnsville, MN 55337, Phone: [phone], FAX: [phone]

www.electrovoice.com • Telex Communications, Inc. • www.telex.com

© Telex Communications, Inc. 02/2001

Part Number 38109-876 Rev A

For customer orders, contact the Customer Service department at

U.S.A. and Canada only.

800/392-3497 Fax: [phone]

For warranty repair or service information, contact the Service

Repair department at 800/685-2606

For technical assistance, contact Technical Support at 866/78 AUDIO

Please refer to the Engineer ing Data Sheet for warranty information.

Specifications subject to change without notice.