Samson MPL 1502 User Manual

20
Using Aux Sends and Returns
The MPL 1502’s two Auxiliary sends allow you to combine the signal from
multiple channels and send the resulting mix to external devices such as effects
processors. When an Aux send knob is at the “0” position, the signal is routed
with unity gain (that is, no boost or attenuation). As it is turned clockwise from
the 0 position, the signal is boosted; as it is turned counterclockwise from the 0
position, it is attenuated. Both Aux sends are
post-fade; that is, the level of the
signal is determined by the input trim, the EQ settings, and the position of the
channel gain control. In other words, raising or lowering the input level of the
channel will affect the send level as well.
The MPL 1502 also provides two stereo Auxiliary returns. These allow you to
return signal from outboard devices, either in stereo pairs or monophonically
(many popular effects processors provide a single mono input but have two
stereo outputs). In practice, you’ll probably want to use the Auxiliary returns to
bring in signal from connected effects processors. If the effects processors have
stereo outputs, they should be connected to both the left and right Auxiliary
return inputs so that their stereo integrity is retained. If they have mono outputs,
you can route them to either the left or right inputs and then use the Auxiliary
return Balance control to adjust the relative level of each paired signal. In this
way, you can actually connect up to four monophonic devices to the MPL 1502’s
Aux return section.
Each of the stereo Auxiliary returns is somewhat similar to a stereo channel,
except that a signal being brought into to a stereo channel can be equalized if
necessary and optionally sent on to other outboard devices (via Aux sends or
channel inserts).
−∞
−∞
+10
AUX 1
AUX 2
+10
0
0
−∞
−∞
+20
AUX 1 LEVEL
0
RL
BALANCE
RL
BALANCE
+20
AUX 2 LEVEL
0

Samson MPL 1502 Specifications

Audio Specifications

frequency response	17 Hz to 30 kHz ± 1.5 dB at +4 dB
equivalent input noise channel 1-5 mic input	-128 dB (A filter, 150 Ω shorted)
equivalent input noise channel 1-15 line input	-131 dB (A filter, input shorted)
total harmonic distortion + noise	Less than 0.03 %
input level channel 1-5 mic input	-50 dBV to +4 dB (10 kΩ, balanced XLR)
input level channel 1-15 line input	-40 dBV to +14 dB (10 kΩ, balanced stereo phone jack)
input level aux return 1-2	+4 dB (47 kΩ, unbalanced phone jack)
maximum input level channel 1-5 mic input	+17 dB
maximum input level channel 1-15 line input	+27 dB
trim gain range	0 dB to +54 dB
channel fader range	+15 dB to -80 dB
aux send gain range	+10 dB to -75 dB
crosstalk ch-to-ch (1 kHz)	-80 dB
crosstalk stereo ch L/R (1 kHz)	-65 dB
standard output level main out	+4 dBV (balanced, 600 Ω loaded)
standard output level aux out	+4 dBV (unbalanced, 2.2 kΩ loaded)
standard output level headphones	150 mW (30 Ω loaded)
maximum output main out	+22 dBV (balanced, 600 Ω loaded)
maximum output aux out	+22 dBV (unbalanced, 2.2 kΩ loaded)
maximum output tape out	+22 dBV (unbalanced, 600 Ω loaded)
tone control high	10 kHz ± 15 dB
tone control mid	800 Hz ± 12 dB
tone control low	80 Hz ± 15 dB

Weight and Dimensions

dimensions	13.8 in (w) x 10.4 in (d) x 3.2 in (h)
dimensions metric	350 mm (w) x 264 mm (d) x 82 mm (h)
weight	7.7 lbs • 3.5 kg