Ashly Keyboard Input Processor SC-44 - Manual (Page 3)

III. FUNCTIONS OF INPUTS AND OUTPUTS ON INDIVIDUAL CHANNELS
A. Input
The channel input impedance is 2.2 megohms which will impose
virtually no load on any musical instrument, insuring maximum
level and high frequency response. Nominal operating level is
-20 dBV, but levels from -50 to +10 dBV provide good results.
Low or high impedance sources are acceptable.
B. EFFECTS SEND-RETURN
These two jacks may be used to insert line-level effects or proces­
sing devices into the channel signal path. Connect the EFFECT
SEND to the device input and connect the device output to the
EFFECT RETURN. This patch point is post eq and pre channel
fader. (LEVEL)
Mic-level (-50) effects devices should be connected between the
instrument and the SC-44 channel input rather than in the effects
loop.
IV. MASTER INPUTS AND OUTPUTS
A. MASTER EFFECT SEND-RETURN
These twor jacks are used to insert’ effects or processing devices
into the entire mix. Hookup is exactly the same as on the channels.
The patch is pre eq. and pre output faders.
B. AUX LINE LEVEL INPUT
This is a line level unbalanced input which can be used to couple
the output of another SC-44 or another mixer into the main mix buss
of the SC-44. Impedance is 3.3K ohms.