Rolls RM65b User Manual

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, TRANSPORTATION 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 W ARRANTIES, OBLIGATIONS, OR LIABILITIES,
INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MER­CHANTABILITY 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.

RM65b HEXMIX

Professional Audio Mixer

BASS

VOLUME

CLIP

VOLUME

CLIP

BASS

VOLUME

IP

VOLUME

IP

MONITOR

+

010 010

MONITOR

010 010

-

BASS

-+-

-

MONITOR

010 010

-

BASS

MONITOR

010 010

-+-

FX

PANTREBLE

SEND

+

R

L

FX

PANTREBLE

SEND

+

R

L

RM65b

+

-

PANTREBLE

+

L

PANTREBLE

+

L

LR

FX

SEND

R

FX

SEND

R

+17

+8

0

-4

PWR

-13

CLIP

CLIP

EFFECTS

RETURN

VOLUME

VOLUME

Professional

Audio Mixer

MASTER VOLUME

LEFT RIGHT

BASS

MONITOR

+

010 010

MONITOR

010 010

-

BASS

-+-

-

HEADPHONE

OUTPUT

FEATURES

• 6 XLR and 1/4” Inputs

• 1/4” Inputs ma y be configured as Insert jacks

• Individual 36 V Phantom Power

• Clip LEDs on each channel

• Input Trim, Monitor, FX Send and Pan on each channel

• Treble & Bass control on each channel

• Mono send, stereo return effects loop

• Stereo Aux Bus Input

• Headphone Output

FX

PANTREBLE

SEND

CLIP

+

R

L

FX

PANTREBLE

+

R

L

SEND

CLIP

ROLLS CORPORATION

SAL T LAKE CITY, UTAH

5/03

OWNERS MANUAL

INTRODUCTION

Thank you for your purchase of the Rolls RM65b He xMix Professional Audio
Mixer . This unit is a breakthrough in size/performance for an audio mixer. It’s a full­function 6 channel mic/line mixer in a single space 19” r ac k chassis . It is intended
for sound reinforcement, studio, choir, and other applications where high channel
to size ratio is desired. Each mic input has individual phantom po wer s witches and
input gain trims located on the rear panel. Each channel f eatures a Monitor send,
stereo Effects loop (mono send / stereo return), Bass, and Treb le controls . This
manual assumes the user has some familiarity with audio mixers.

INSPECTION

1. Unpac k and inspect the RM65b bo x and pac kage .
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 transporting the unit in the future.

2. Please visit our w ebsite at www.rolls.com, and clickon the Register Warranty
Here text. Complete the warranty page to register your RM65b. If you do not have
access to the internet, complete the Warranty Registration Card and return it to
the factory.

TABLE OF CONTENTS

1. INTRODUCTION

INSPECTION
TABLE OF CONTENTS
DESCRIPTION

FRONT PANEL

SCHEMATIC

2. FRONT PANEL (Continued)

REAR PANEL

3. OPERATION

4. OPERATION (Continued)

5. SPECIFICATIONS

6. SCHEMATIC

DESCRIPTION

FRONT PANEL

VOLUME

CLIP

VOLUME

CLIP

MONITOR

010 010

MONITOR

010 010

SEND

+

R

+

L

-

-

FX

BASS

PANTREBLE

SEND

R

+

-+-

L

FX

BASS

PANTREBLE

VOLUME

CLIP

VOLUME

CLIP

MONITOR

010 010

MONITOR

010 010

SEND

+

R

+

L

-

-

FX

BASS

PANTREBLE

SEND

R

+

-+-

L

FX

BASS

PANTREBLE

VOLUME

CLIP

VOLUME

CLIP

MONITOR

010 010

MONITOR

010 010

SEND

+

R

+

L

-

-

FX

BASS

PANTREBLE

SEND

R

+

-+-

L

FX

BASS

PANTREBLE

RM65b

LR

EFFECTS
RETURN

+17

+8

0

-4

-13

LEFT RIGHT

HEADPHONE

Professional

Audio Mixer

OUTPUT

PWR

MASTER VOLUME

CHANNEL CONTROLS

VOLUME: Adjusts the amount of signal sent through the channel and to the FX
send and output.
CLIP LED: Indicates that the channel is being o v erdriven. This LED lights 3 dB
before clipping.
MONITOR: Adjusts the amount of signal sent from that channel to the Monitor
Send jack. The signal is pre-fader (pre-V olume control)
BASS: Controls the boost or cut of frequencies below 400 Hz f or each channel.

1 6

SPECIFICASPECIFICA

SPECIFICA

SPECIFICASPECIFICA

TT

T

TT

II

OO

NSNS

I

O

NS

II

OO

NSNS

Input Impedance: 20K Ohms balance d

10K Ohms unbalance d (1/4")
Output Impedance: 50 OhmsTRS Balanced
Max Input L evel: +10 dBV XLR

+10 dBV 1/4"
Phase Shift: < 10 deg. 20 Hz - 20 kHz
Input Connectors: XLR and 1/4"
Phantom Power: 36 Volts DC
Outputs: 1/4" main balanced +17 dB max

1/4" monitor +17 dB max

1/4" FX send

1/4' TRS Stereo Headphone
Max Gain: (Mains): 60 dB ba l/unb a l
(Monitor): 55 dB
Tone controls: 12 dB treb, bass cut/boost, 1K Hz center
Max S/N Ratio: 106 dB
THD: < .003%
IMD (SMPTE): < .003%
CMRR: 80 dB
Power: AC adapter 12 VAC (Rolls PS12)
Weight: 7 lbs (3KG)
Size: 19" x 1.75" x 6.5" (48cm x 4.5cm x 17cm)

NOTES:___________________________________________________________

TREBLE: Controls the boost or cut of frequencies abo v e 400 Hz for each channel.
PAN: Adjusts the amount of relativ e signal to the Right, Left or both Main Out
jacks.
FX SEND: Controls the amount of signal (post-v olume control) that is sent f or that
channel to the FX Send jack.

MASTER CONTROLS

FX RETURN: Adjusts the amount of signal coming bac k into the FX Return jack.
MASTER VOLUME, RIGHT - LEFT: Controls the amount of signal sent out the
main Right and Left Output jacks, and sets the ov erall signal le vel except for the
Monitor Send and Effects Send jacks .

REAR PANEL

MADE IN U.S.A.

POWER
12 VAC

MODEL RM65b

SERIAL NUMBER

65-

LEFT

OUTPUT

RIGHT
OUTPUT

MONITOR

CHANNEL 6

PHANTOM

POWER

6 5 4 3 2 1

WARNING

OR MOISTURE.

MIC

DO NOT EXPOSE THIS EQUIPMENT TO RAIN

:

STEREO

STEREO

AUX BUSS

FX

SEND

FX RETURN

INPUT

SEND

TRS STEREO

TRS STEREO

PLUG ONLY

PLUG ONLY

CHANNEL 5

MIC

LINE/

INSERT

TRIM

CHANNEL 4

MIC

LINE/

INSERT

TRIM

CAUTION:

TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT NOT REMOVE BACK.

NO USER SERVICABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

CHANNEL 3

MIC

LINE/

INSERT

TRIM

CHANNEL 2

MIC

LINE/

INSERT

TRIM

CHANNEL 1

MIC

LINE/
INSERT

TRIM

RISQUE DE CHOC - NE PAS ENLEVER

LINE/

INSERT

TRIM

POWER: Connects to the Rolls PS12 12VAC , 300mA pow er adapter.
1 - 6 CHANNEL MIC INPUTS: XLR input connectors f or mic or line level signals.
1 - 6 CHANNEL LINE INPUTS: 1/4” input connectors f or line level signals.

Each of these inputs may be reconfigured as INSERTS b y mo ving jumper
connector for each channel located inside the RM65b.
TRIM: Adjusts the amount of input signal from the mic and line input jac ks.
PHANTOM PO WER: 6 switches for turning on the microphone phantom power f or
the XLR inputs, and are numbered for the channel the y are assigned to. DOWN is
on, UP is off.
AUX B US IN: 1/4” TRS stereo input to the main mix bus , and may be used as an
auxiliary stereo input for joining two RM65s together.
FX SEND: 1/4” unbalanced jac k for sending the signals assigned by each
channel’s FX Send control out to e xternal effects .
FX RETURN: STEREO 1/4” Tip-Ring-Sleeve jack f or inputting signals from
external effects devices . NOTE: THIS JACK IS STEREO ONL Y - CONNECTING

A MONO 1/4” TIP-SLEEVE J ACK WILL RESULT IN THE RETURN SIGNAL
BEING PRESENT AT THE RIGHT OUTPUT ONLY.

MONITOR OUT: 1/4” unbalanced jack f or sending signals assigned b y each
channel’s monitor output control to an auxiliary amplifier or monitoring system.
RIGHT and LEFT OUTPUT: 1/4” TRS balanced jacks to be used as the unit’s
main outputs.

USING PHANTOM POWER

Phantom power is a means of powering condenser microphones through the micro­phone cable. The RM65b has individually switchable 36 volts of phantom power for
each of its 6 channels through the XLR jacks. The DIP switches on the rear of the unit
are for switching the power on and off. When the little switch tab is down, the power is
on. The number on the switch corresponds to the channel that is receiving the power.
If phantom power is not needed, it should be switched off to avoid possible damage
to a microphone, or degraded sound quality.

25

OPERATION

The RM65b is ideal for small combo groups where a small number of instruments and
microphones need to be mixed together. Refer to Figure 2 for an example of how to
connect the inputs and outputs of your RM65b. Connect microphones to balanced XLR
cables and to the XLR inputs. If any of these microphones are condenser microphones,
they will require phantom power. To turn on the phantom power for an individual channel,
set the phantom power switch for that channel to the ON (down) position. Instruments
may be played into a microphone which is connected as indicated above, or if you have
active pickups in your instrument, simply connect the output of your instrument to an
RM65b Line Input as the acoustic guitar is shown.

Electric guitars and basses normally are connected to an instrument preamplifier.
Amplifiers may have microphones placed in front of the speaker, or if the amp has a line
level output (check with the amplifier’s owners manual) - it may also be connected to the
mixer directly. Keyboards and sound modules are connected directly to the RM65b line
inputs as shown.

FX LOOP
To use the FX Loop, connect a 1/4” unbalanced cable to the FX Send and to the Input on
your signal processor or effects device. Connect the Outputs of the signal processor or
effects device to the RM65b FX Return jack. You will need an “Inser t” type of cable (shown
to the rigth) to adapt the dual 1/4’ end connected
to your signal processor, to the 1/4’ TRS end of
the RM65b. The level of the effect will be con­trolled by the settings on the channels’ FX Sends and by the Output
Level of your effects device, The overall level of the effect to the final mix
will be controlled by the FX Return level on the front of the RM65b.

MONITOR
To use the Monitor feature of the RM65b, connect the Monitor Out jack to a monitor
amplifier via a 1/4” unbalanced cable. Each channel’s monitor level is controlled by that
channel’s Monitor level setting. Be aware that the RM65b has no master monitor level, so
you will need to set the overall monitor level with the monitor amplifier and the Monitor
Levels of each channel.

Connect the Right and Left Main Outputs to the main amplifier(s) and make sure the
amplifier is the correct rating for the speakers. If you are operating in mono, use either the
Right or Left Output.

The RM65b may also be used for recording. Connect microphones, instruments, and
effects to the inputs as described above - the connect the Right and Left outputs to your
recording device and set the levels accordingly.

CONFIGURING THE 1/4” INPUTS AS INSERTS

NOTE: You are responsible for any damage that may occur during this process.

Carefully remove the seven screws that hold the lid of the RM65b to the chassis. Refer to
Figure 1 for the placement of the input to insert jumpers. To convert the 1/4” Input jack to
become an “Insert”, move the appropriate channel jumpers from INPUT to INSERT. Note
that channel 5 jumpers are moved perpendicular to their original placement for the Insert
position rather than parallel.

Figure 2

MADE IN U.S.A.

POWER
12 VAC

MODEL RM65b

SERIAL NUMBER

65-

LEFT

OUTPUT

CHANNEL 6

MIC

STEREO

AUX BUSS

MONITOR

RIGHT

STEREO

FX

PHANTOM

INPUT

SEND

OUTPUT

FX RETURN

SEND

POWER

TRS STEREO

PLUG ONLY

6 5 4 3 2 1

TRS STEREO

WARNING

PLUG ONLY

OR MOISTURE.

PWR CLIP CLIP

DO NOT EXPOSE THIS EQUIPMENT TO RAIN

:

VOLUME

CHANNEL 5

MIC

LINE/

INSERT

TRIM

CHANNEL 4

MIC

LINE/

INSERT

TRIM

CAUTION:

TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT NOT REMOVE BACK.

NO USER SERVICABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

CHANNEL 3

MIC

LINE/

INSERT

TRIM

MONITOR AMPLIFIER

CHANNEL 2

MIC

LINE/

INSERT

TRIM

CHANNEL 1

MIC

LINE/

INSERT

TRIM

RISQUE DE CHOC - NE PAS ENLEVER

RA170

LINE/

INSERT

TRIM

VOLUME 1 VOLUME 1

1 5 30 100

0 10 0 10

WATTS

INSERT

CHANNEL

6

INPUT

Figure 1

INSERT

CHANNEL

1

INPUT

INSERT

CHANNEL

2

INPUT

INSERT

CHANNEL

INPUT

3

INSERT

CHANNEL

INPUT

4

INSERT

CHANNEL

5

INPUT

3 4

1 5 30 100

WATTS

MAINS AMPLIFIER

PROTECT