Altec Lansing 1715C - Manual (Page 5)

1783
The Altec Lansing 1783 Line Output modules pro­
vides the drive capability necessary to interface
with other professional equipment. The electroni­
cally balanced output stage provides a low source
impedance to drive subsequent stages. If trans­
former isolation is necessary,the module’s circuit
board accomodates the optional PC-mount
1786
Output Isolation Transformer. The continuously
vciriable output level control is local to the module
permitting independent adjustment of each line
output.
1783 Specifications
Description
Output Source
Impedance:
Nominal Output Level
/Load Impedance:
Maximum Output
Level:
Frequency Response:
±1 dB:
Total Harmonic
Distortion (THD):
20 Hz - 20 kHz:
Signal to Noise Ratio:
Power Requirements:
<50 n
+8 dBm
(Ref. 1 kHz, 0 dBm = 0.775
Vrms with 600 il load, output
level control at maximum, 100
mVrms input)
+24 dBm
(Ref. 1 kHz, +8 dBm output)
20 Hz - 25 kHz
(Ref. 1 kHz, +8 dBm output,
output level control at maxi­
mum, 30 kHz low peiss filter)
<0.05%
>88 dBm
(Below +8 dBm output, out­
put level control at maximum,
A-weighted)
±18 VDC at 20 mA
(supplied by mainframe)
1786 Output Isolation Transformer
Impedance Ratio: 1:1 (600 il:600 Cl)
Frequency Response:
±1 dB:
Total Harmonic
Distortion (THD):
20 Hz - 20 kHz:
50 Hz - 20 kHz:
(Ref 1 kHz, +18 dBm output)
20 Hz - 20 kHz
Ref 1 kHz, +18 dBm output)
<0.5%
< 0 . 1 %
Special Ordering Instructions
NOTE: 77ie modules listed below are required
for use with the I707C/I7I5C and must be
ordered separate from the mainframe.
Plug-in Input Modules:
1780A Mic/Line Input module
1780AT Mic/Line Input module with 10 ki)
bridging transformer installed
1781A Programmable Input module
1781AT Programmable Input module with
model 1785A 600 H to 10 kfl
isolation transformer installed
1785A 600 n to 10 ki) Input Isolation
Transformer for installation on
existing model 1781A
Plug-in Output Module:
1783 Line Output module
1786 Output Isolation Transformer
Plug-in EQ Module:
875LA Programmable 14-Band EQ module
NOTE: Each module selected requires one of
the following connectors also be ordered:
1791
Female XLE
-.'■i.V ■■
1792
Male XLR
,K.,
/¡3^1... tif
v
1793
Dual RCA Phono
1794
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