Allenheath 21 Series Manual de usuario Pagina 6

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3
Channel Inputs:
XLR sockets.
Electronically balanced suitable for safe connection
of external phantom power supply of up to
48VDC.
XLR pin 3 = hot
pin 2 = cold
pin
1
= screen
Input Impedance
-
mic = 1000 to 1500 ohms
line =
10kohms
Gain
-
mic
= continuously variable from
+20dB
to
+60dB
line
= continuously variable from
-5dB
to
+35dB
Pad
-
mic =
-20dB
line = -12dB
Insertion Points
-
unbalanced
1/4"
stereo jack sockets
tip = return
ring = send
outer = earth
normal operating level =
+4dBv
Peak Overload Indicator
-
turns on at 3dB before clipping.
Echo Return Inputs:
mono
1/4"
jack sockets
Maximum Gain to Stereo Outputs =
+16dB
Input Impedance =
greater than 4kohms
Stereo Tape Input:
stereo
1/4"
jack socket
tip = left
ring = right
outer = earth
Input Impedance = 40kohms
Gain to Monitors
-
0dB
or
+12dB
selectable by an internal connector
for either +4dBv or -8dBv normal operating level.
Stereo and Mono Outputs:
unbalanced XLR sockets
pin 3 = signal
pin 2 = pin
1
= earth
Normal Operating Level = +4dBv or
-8dBv selectable by an internal
connector.
Cue and Echo Outputs:
unbalanced
1/4"
jack sockets mono
Normal Operating Level =
+4dBv
Maximum Gain from Input =
+10dB
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