Rolls MX122 Users Manual

PHANTOM PO WER
The MX122 Phantom Pow er is applied to the XLR input when the jumper con­nects the right two pins as you face the rear of the unit. Shown is an example of
the Phantom Pow er connected.

on

phantom power

MX122

LIMITED W ARRANTY

This product is warranted to the original consumer purchaser to be free from
defects in materials and workmanship under normal installation, use and service for a
period of one (1) year from the date of purchase as shown on the purchaser’s receipt.

The obligation of Rolls Corporation under this warranty shall be limited to repair
or replacement (at our option), during the warranty period of any part which proves
defective in material or workmanship under normal installation, use and service, provided
the product is returned to Rolls Corporation, TRANSPOR TATION CHARGES PRE­PAID. Products returned to us or to an authorized Service Center must be accompanied by
a copy of the purchase receipt. In the absence of such purchase receipt, the warranty
period shall be one (1) year from the date of manufacture.

This warranty shall be invalid if the product is damaged as a result of deface­ment, misuse, abuse, neglect, accident, destruction or alteration of the serial number,
improper electrical voltages or currents, repair, alteration or maintenance by any person or
party other than our own service facility or an authorized Service Center, or any use
violative of instructions furnished by us.

This one-year warranty is in lieu of all expressed warranties, obligations or
liabilities. ANY IMPLIED WARRANTIES, OBLIGA TIONS, OR LIABILITIES,
INCLUDING BUT NOT LIMITED TO THE IMPLIED W ARRANTIES OF MER­CHANT ABILITY AND FITNESS FOR A PARTICULAR PURPOSE, SHALL BE
LIMITED IN DURATION TO THE ONE YEAR DURATION OF THIS WRITTEN
LIMITED WARRANTY. Some states do not allow limitations on how long an implied
warranty lasts, so the above limitation may not apply to you.

IN NO EVENT SHALL WE BE LIABLE FOR ANY SPECIAL, INCIDENTAL
OR CONSEQUENTIAL DAMAGES FOR BREACH OF THIS OR ANY OTHER
WARRANTY, EXPRESSED OR IMPLIED, WHATSOEVER. Some states do not allow
the exclusion or limitation of special, incidental or consequential damages so the above
limitation or exclusion may not apply to you. This warranty gives you specific legal rights,
and you may also have other rights which vary from state to state.

ROLLS CORPORATION

SALT LAKE CITY, UTAH

4/03

MiniMix Pro Mixer

PHONE/AUX

OUTPUTS

MIC LEVEL

R L

PAN

LEVEL LEVEL LEVEL LEVEL

R L

BAL

R L

BAL

R L

BAL

R L

BAL

MASTER

LEVEL

SPECIFICATIONS

Input Impedance: Line: 10 K Ohms unbal.

Mic: 10 K Ohms bal.
Phantom Pow er V oltage: +12 VDC
Output Impedance: 50 Ohms bal
Max Input Level: +24 dBV line, -8 dBV microphone
Phase Shift: < 10 deg. 20 Hz - 20 kHz
Connectors: 8: 1/4" TS Inputs, 1: XLR Mic Input

3: 1/4” TRS, 1: 1/8” (3.5mm) Outputs

Max Gain: 26 dB Line

26 dB Aux

80 dB Mic
Mic CMRR: 95 dB
S/N Ratio: >90 dB
THD < .004%
IMD (SMPTE) < .004%
Self Noise: < - 82 dB
Po wer 12 VDC
Size: 8.4” x 1.7” x 5”

(21.3 x 4.3 x 13 cm)
Weight: 2.5 lbs (1.14 kg)

OWNERS MANUAL

PHONE/AUX

LEVEL

pwr

INTRODUCTION

DESCRIPTION

Thank your for your purchase of the Rolls MX122 MiniMix Pro Mixer. The MX122
is a line-level mix er f eaturing a single mic input and four channels of stereo inputs .

INSPECTION

1. Unpac k and inspect the MX122 bo x and pac kage .
Your MX122 was carefully packed at the factory in a protective carton. Nonethe­less, be sure to examine the unit and the carton for any signs of damage that ma y
have occurred during shipping. If ob vious physical damage is noticed, contact the
carrier immediately to make a damage claim. We suggest saving the shipping
carton and packing materials for safely transporting the unit in the future.

2. Please visit our website at www.rolls.com and click on the Register W arranty
Here text, then fill out the W arr anty Registration inf o to register y our MX122. Or
you may complete the enclosed Warranty Registration Card and return it to the
factory.

FEATURES

• 1 XLR balanced Mic Input with rear panel Trim control

• +12VDC Phantom Pow er

• 4 individual 1/4” Stereo Inputs

• Balanced 1/4” TRS Outputs

• Balance control on each channel (Pan on the Mic channel)

• Headphone / Auxiliary Outputs

• External Power Supply included f or low noise oper ation

FRONT PANEL

PHONE/AUX

OUTPUTS

MIC LEVEL

R L

PAN

LEVEL LEVEL LEVEL LEVEL

R L

BAL

R L

BAL

R L

BAL

R L

BAL

MASTER

LEVEL

PHONE/AUX

LEVEL

pwr

Channel One
Mic Level: Adjusts the signal level of the microphone preamp circuitry.
Pan: Adjusts the relative lev el of the microphone signal to the Right and Left
Outputs.

Note: Channels Tw o through Five are identical.

Channel Two - Five Section
Level: Adjusts the overall signal level of the channel.
Bal: Adjusts the relativ e le v el of the channel signal to the Right and Left outputs.

Master Level : Controls the overall output level of the MX122.
Phone/Aux Lev el: Adjusts the output level of the Phone/Aux Outputs.
Phone/Aux Outputs: 1/4” and 1/8” (3.5mm) TRS stereo jacks f or monitoring the
master right and left signals, also may be used as an alternative stereo output for
connecting to another stereo amplifier.
PWR: Indicates that the MX122 is connected to an A C outlet and is on.

REAR PANEL

SCHEMATIC

1

12 VDC: Connects to the included Rolls PS27 12 VDC po wer supply.
Master Outputs
Right and Left Out: 1/4” TRS balanced main output jack s. For connection to an
amplifier, recording de vice or signal processor.
Channel Inputs

Note: Channels Tw o through Five are identical.

Right / Left: 1/4” TS unbalanced jacks for connection to the right and left outputs of
a stereo instrument. If a mono signal is being sent,use the Right input, f or a Tip­Ring-Sleeve stereo signal, use the Left input.

Mic Input Channel 1: Balanced XLR jac k f or connection to a condenser or dy­namic microphone.
Phantom Pow er: Jumper connector for applying +12V phantom power to the Mic
XLR Input jack.
Mic Trim: Adjusts the initial gain of the Mic preamp circuitry.