Samson SAMDR1248 User Manual

15

The following section explains the basic operation of the 

MDR1248 and MDR1688:

1.  Before connecting mics or instruments, make sure that 

the power of all your system's components including 

the MDR1248 and MDR1688 is turned off.  Also, make 

sure that the MAIN LEVEL and PHONES / CR controls are 

turned all the way down.

2.  Connect the cables to your microphones and instru-

ments, and insert the other end of the cable firmly into 

the appropriate input on the MDR1248 and MDR1688.

NOTE: SETTING THE INPUT GAIN - When connecting a 

microphone to channels 1 through 4 on the MDR1244 or 

1 through 8 on the MDR1688, it’s a good idea to start with 

the Gain Control turned all the way down.  Set the input 

fader to the "0" position and slowly raise the GAIN control 

until you see the PEAK LED turn on.  Now, back the GAIN 

control down so that the PEAK LED only lights for a short 

time during the loudest input the channel will see.  

Note. You can also press the channel's PFL switch and 

use the LEVEL SET function. When the PFL is switched 

on, you'll see the LEVEL SET LED is illuminated and the 

channel's input level will now be displayed on the Main 

VU meter.  

3.  Switch on the power of any peripheral devices, and 

then power up the MDR1248 and MDR1688.

NOTE:   It is important to remember the Golden Rule of 

audio …  " LAST ON, FIRST OFF".  Translated, this means 

that when turning on your system, you should always 

turn your power amplifiers or powered monitors on LAST, 

and when turning your system off, turn your power amps 

off FIRST.  This helps avoid any loud pops caused by rush 

current at power up, or down, which can sometimes dam-

age loudspeakers.

4.     Turn on your power amp or powered monitors and 

raise the level control to the manufacturers recom-

mended operating level. 

5.   Set the MAIN LEVEL control in the MDR1248 and 

MDR1688’s master section to the "0" position.

6.    While speaking into the mic (or playing the instru-

ment), adjust the channel LEVEL control so that the 

"0" LED of the MAIN section VU level meter lights 

occasionally.

7.    You can shape the tone of each channel by adjusting 

the channel equalizer controls as desired.

NOTE:   You may need to adjust the channel LEVEL control 

to compensate for the slight changes in level after using 

the channel equalizer.