Rolls RM83T プリント

4. CHANNEL INSERT
For each channel you wish to have 
the ability to insert into, you must fi rst 
confi gure that channel’s 1/4” Input as 
an INSERT. Follow the instructions 
shown on the back page. Connect a 
1/4” Tip-Ring-Sleeve INSERT cable 
into the channel’s 1/4” jack, and to the 
processor or other device you want the signal connected to.

2. CONNECTING TWO RM83T 
UNITS TOGETHER

Using a single RCA cable, connect from 
the Pre-Fader Output of the “Slave” unit 
to the Aux Bus input of the “Master” unit. 
This “Master” unit’s Master Level control 
will now adjust the overall level of both 
units.

INTRODUCTION

Thank your for your purchase of the Rolls RM83T Mic Line eight channel audio mixer. It 
is intended for sound reinforcement or studio applications where several microphones or 
line sources need to be combined to a single output. Please review this manual for proper 

operation.

INSPECTION

1. Unpack and inspect the RM83T box and package.
If obvious physical damage is noticed, contact the carrier immediately to make a damage 
claim. We suggest saving the shipping carton and packing materials for safely transport-
ing the unit in the future.
2. Please visit our website at www.rolls.com and register your warranty at the “Register 
Your Warranty Here” text, or complete the Warranty Registration Card and return it to the 
factory.

DESCRIPTION
FRONT PANEL

NOTE: Descriptions for Channels 1 - 8
LEVEL: Adjusts the level of signal in the channel from off  to +20 dB of gain.
TONE:Cuts the signal up to 12 dB, below 200 Hz when turned clockwise, or above 6 kHz 
when turned counter-clockwise.
1/8” STEREO INPUT: Channel 5 stereo line level input for Ipod type input accessable fron 
the front panel.
MASTER LEVEL:  Adjusts the Main Output signal level.
pwr: LED indicating power is applied to the RM83T.

Power Switch: Applies power to the unit.

REAR PANEL

MAIN OUTPUT: XLR balanced jack containing the RM83T main output signal.
MIC/LINE: Switches the output XLR level from mic to line level.
PRE-FADE OUTPUT: RCA jack for connection to another RM83T Aux/Bus Input or to 
another device such as a recorder.
AUX INPUT: RCA jack which connects directly to the RM83T mix bus. The jack may be 
connected to another RM83T Pre-Fade Output - making this unit the “Master”.
PHANTOM POWER SWITCHES: 8 individual DIP switches for applying 48 Volts of 
phantom power to the indicated channel’s XLR Input. The phantom power is for powering 
condenser microphones. The Phantom Power switches are in the OFF position when the 
RM83T is shipped from the factory.
CHANNEL INPUTS 1 - 8: 1/4” TS unbalanced, and XLR balanced input jacks.
The eight 1/4” jacks come from the factory confi gured as line inputs and are electrically 
mixed with the XLR jacks. They may be used together if desired. These inputs may be 
reconfi gured as either Direct Outputs, or Inserts. See page 4 for details.

SLAVE UNIT

MASTER UNIT

CONNECTION

1. MICROPHONE AND MAIN OUTPUT CONNECTION
Connect microphones to the XLR Inputs as shown here. If the 
microphones are condenser type, and require phantom power 
- remember to switch on (down) the corresponding Phantom 
Power switch.
Connect the Output to the next device in your 
signal chain.

3. CHANNEL DIRECT OUTPUT
For each channel you wish to have 
Direct Output access, you must fi rst 
confi gure that channel’s 1/4” Input as 
a Direct Output. Follow the instruc-
tions shown on the back page. 
Connect a 1/4” unbalanced Tip-Sleeve cable to the channel’s 1/4” jack and to 
the next device you want the signal sent to. Note, the channel’s signal will still be 
present at the RM83T Main Output.

A NOTE ABOUT ROLLS MICROPHONE TRANSFORMER PREAMPLIFIER
The Rolls Transformer Balanced Input Microphone Preamp features many advantages 
over other mic preamps. Among these are simplicity of design, 40db or higher CMRR 
(common mode rejection ratio) than transistor input mic preamps. This means much lower 
noise on long input lines, and very low distortion at high gain.

When setting up the RM83T turn all channels that are not being 
used off (volume at 0). Each channel is always active and can 
generate hum. So if a channel is not being used the volume for that 
channel should be set at 0.