Samson MDR1248 Owner's manual - Front Panel Controls

5

Front Panel Controls

FRONT PANEL

  1   MIC IN – Input connector for Low-Noise Microphone 

pre-amp.

  2   LINE IN–Input connector for Line level inputs.

  3   INSERT – 1/4-inch TRS (TIP/RING/SLEEVE) connector 

providing send and receive channel patch point for 

outboard effects.

  4   GAIN – Used to set the input level of the mic pre and 

line input.

  5   LOW CUT – Bass roll off switch at 75Hz used to elimi-

nate unwanted low end rumble and hum.

  6   HIGH FREQUENCY – Controls the high band of the 

Channel Equalizer, +/- 15 dB at 12KHz.

 7   MID CUT/BOOST – This control knob provides +/- 15 

dB of boost or cut at the frequency set on the MID 

SWEEP control on the mono input channels. 

 8   MID SWEEP – Control knob used to set the center 

frequency of the mid band of the Channel Equalizer.

  9    LOW  FREQUENCY – Controls the low band of the 

Channel Equalizer, +/- 15 dB at 80Hz.

 10    AUX 1 – Auxiliary send that can be used with an 

external effects processor, or to create a cue or moni-

tor mix.

 11   PRE / POST switch – Used to configure Aux 1 signal 

routing from a Pre fader to a post fader send.

 12    AUX 2/DSP – Post-fader auxiliary send that can be 

used with an external effects processor, or to create a 

cue or monitor mix, or to send a signal to the internal 

DSP.

 13   PAN – Controls the channel’s position between left 

and right in the stereo bus. 

 14    3/4  MUTE LED – When illuminated, the display indi-

cates that the input channel is assigned to the ALT3/4 

bus and is muted in the Left /Right Main Mix bus.

 15    3/4 / MUTE switch – When engaged, the input chan-

nel is assigned to the ALT3/4 bus and is muted in the 

Left / Right MAIN MIX bus.

 16   SOLO LED – When illuminated, the display indicates 

that the input channel is assigned to the SOLO bus.

 17    SOLO switch – When engaged, the input channel is 

assigned to the SOLO bus.

 18   PEAK – Red LED will illuminate indicating when the 

GAIN has been adjusted too high.

 19   LEVEL – Audio taper fader provides smooth control 

of level changes.

 20    +4 / -10 switch – Used to set the line input sensitiv-

ity from –10dB when the switch is pressed in to +4dB 

when this switch is out.

 21    RIGHT LINE – 1/4-inch phone input connector for the 

right line input for the stereo channels. 

22   LEFT/MONO LINE - 1/4-inch phone input connec-

tor for the Left Line input for the stereo channels or a 

mono input.

23   ALT 3/4 OUTPUTS jacks – Balanced, 1/4-inch phone 

connectors carrying the signal from the ALT 3/4 bus.

 24   CONTROL ROOM OUTPUT– Left and Right Control 

Room output connectors for connecting a monitor 

system.

 25   MAIN MIX OUTPUT (1/4-inch) – Left and Right Main 

Mix balanced output 1/4-inch TRS connectors.

 26      MAIN MIX OUTPUT (XLR) – Left and Right Main Mix 

balanced output XLR connectors.

 27   AUX RETURN 1 – Left and right input jacks for con-

necting to the outputs of external line level sources 

like those from effects processors.

 28   AUX RETURN 2 – Left and right input jacks for con-

necting to the outputs of external line level sources 

like those from effects processors.

 29   FOOTSWITCH  JACK – 1/4-inch phone jack for con-

necting a standard footswitch used to turn the inter-

nal DSP effects on and off.

 30  PHONES  JACK – Connect stereo headphones here. 

 31   AUX SEND 2 –  Line level output from the Auxiliary 2 

bus.

 32   AUX SEND 1 –  Line level output from the Auxiliary 1 

bus.

 33    2 TRACK  OUTPUTS – Connect to the input of a DAT, 

Cassette, Mini Disk or Hard Disk Recording system.

 34   2 TRACK INPUTS – Connect the output from a DAT, 

Cassette, Mini Disk or Hard Disk Recording system.

 35   2 TRK LEVEL – Control knob used to set the level of 

the source connected to the 2-track input. 

 36    VARIATIONS – Control knob used to select one of the 

sixteen variations for each of the sixteen DSP effect 

programs.

 37    PROGRAMS – Control knob used to select one of the 

sixteen DSP effect programs.

 38   DSP PEAK – LED indicator illuminates when the input 

signal to the internal DSP is reaching an overload 

level.

 39   DSP MUTE switch – Used to turn the internal DSP 

effects on and off.

 40    ALT 3/4 TO MIX – Routes the ALT 3/4 to the Left / 

Right MAIN MIX outputs. Use the ALT3/4 Level (55) to 

set the volume.

 41    2 TRK TO MIX - Routes the Left / Right 2 track inputs 

to the Left / Right MAIN MIX outputs. Use the 2 TRK