Rolls DJ Equipment RM83T User Guide

OPERATION  
CONFIGURING THE 1/4INPUT JACKS AS DIRECT OUTPUTS  
The eight 1/4Input jacks come from the factory configured as line inputs and  
are electrically mixed with the XLR jacks. They may be used together if desired.  
To configure a channel’s 1/4jack as a Direct Out, first remove the RM83T lid.  
For each channel there are dual three-pin headers with shorting jumper on two  
pins. The setting from the factory is on “IN. By moving the shorting jumpers to  
the configuration shown as “OUT(one jumper up, the other down), the jack then  
becomes a Direct Output.  
RM83T  
CONFIGURING THE 1/4INPUT JACKS AS INSERTS  
To configure a channel’s 1/4jack as an Insert, first remove the RM83T lid and  
locate the corresponding channel’s dual three-pin header. Move both shorting  
jumpers down as shown below as “INSRT, the jack then becomes an Insert.  
Eight Channel Mic Mixer  
1
2
3
4
5
6
7
8
MASTER  
TRANS BALANCED  
MIC MIXER  
1/8”  
MADE IN USA  
RM83T  
+20  
LEVEL  
+20  
LEVEL  
+20  
LEVEL  
+20  
LEVEL  
+20  
LEVEL  
+20  
LEVEL  
+20  
LEVEL  
+20  
LEVEL  
0
10  
LEVEL  
STEREO  
INPUT  
pwr  
TONE  
TONE  
T
ON  
E
TONE  
TONE  
TONE  
TONE  
TONE  
Direct  
Output  
Insert  
Input  
SPECIFICATIONS  
Input Impedance:  
Mic:  
1/4":  
Bus Input:  
Mic:  
Line:  
600 Ω XLR balanced  
10K Ω unbalanced  
10K Ω unbalanced  
+4 dBV balanced  
+22 dBV  
8: XLR, 8: 1/4" (Line), 1: RCA (Bus input)  
XLR bal., RCA unbalanced Prefade out  
CONFIGURING THE OUTPUT FOR MIC OR LINE LEVEL  
The RM83T ships from the factory with the XLR Main Output configured as Line  
Level (+4 dB). To change this to Mic Level (-10 dB), carefully remove the lid,  
locate the Mic/Line header which is near the Main Output jack. Move the two  
jumpers from the Line Level position (shown below on the right), to the Mic Level  
position (shown on the left).  
Max Input Level:  
Input Connectors:  
Outputs:  
Max Gain:  
Mic:  
60 dB  
Line:  
35 dB  
12 dB Treble/Bass cut  
+48 VDC  
+22 dBV max  
51 Ω  
<10 degrees, 20Hz to 20 kHz  
106 dB  
Tone Control:  
Phantom Power:  
Output Level:  
Output Impedance:  
Phase Shift:  
Max S/N ratio:  
THD:  
Mic  
Level  
Line  
Level  
<.01%  
JUMPER DEFAULTS  
The internal jumpers are congured from the factory as follows:  
1/4” = INPUTS  
CMRR:  
Size:  
>120 dB (Mic)  
19" x 1.75" x 6"  
(48.3 x 4.5 x 15 cm)  
6 lbs.  
Weight:  
MAIN OUT LEVEL = LINE LEVEL  
DIP SWITCH DEFAULT SETTING:  
JUMPER DEFAULT SETTING:  
ALL OFF  
1/4” JACKS AS INPUT  
ROLLS CORPORATION  
SALT LAKE CITY, UTAH  
4/11  
75889 00830  
6
2
Start Guide  
 

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