Rolls PM350B User Manual

have other rights which vary from state to state.

not apply to you. This warranty gives you specific legal rights, and you may also

incidental or consequential damages so the above limitation or exclusion may

EVER. Some states do not allow the exclusion or limitation of special,

OR ANY OTHER WARRANTY, EXPRESSED OR IMPLIED, WHATSO-

INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR BREACH OF THIS

may not apply to you.

allow limitations on how long an implied warranty lasts, so the above limitation

DURATION OF THIS WRITTEN LIMITED WARRANTY. Some states do not

LAR PURPOSE, SHALL BE LIMITED IN DURATION TO THE ONE YEAR

WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICU-

LIABILITIES, INCLUDING BUT NOT LIMITED TO THE IMPLIED

obligations or liabilities. ANY IMPLIED WARRANTIES, OBLIGATIONS, OR

authorized Service Center, or any use violative of instructions furnished by us.

maintenance by any person or party other than our own service facility or an

serial number, improper electrical voltages or currents, repair, alteration or

defacement, misuse, abuse, neglect, accident, destruction or alteration of the

(1) year from the date of manufacture.

receipt. In the absence of such purchase receipt, the warranty period shall be one

an authorized Service Center must be accompanied by a copy of the purchase

tion, TRANSPORTATION CHARGES PREPAID. Products returned to us or to

installation, use and service, provided the product is returned to Rolls Corpora-

any part which proves defective in material or workmanship under normal

limited to repair or replacement (at our option), during the warranty period of

the purchaser’s receipt.

and service for a period of one (1) year from the date of purchase as shown on

free from defects in materials and workmanship under normal installation, use

LIMITED WARRANTY

IN NO EVENT SHALL WE BE LIABLE FOR ANY SPECIAL,

• Two Headphone Outputs 1/4" and 1/8"

This one-year warranty is in lieu of all expressed warranties,

• Switchable ground lift on balanced outputs

•

• "Phantom" powering via the Line In

DI outs

This warranty shall be invalid if the product is damaged as a result of

• Stereo or Mono 1/4" Line Input

• XLR Mic In & Pass Through

headphone monitoring.

TRS stereo or mono monitor signal together for

stereo or mono instrument signal, and a 1/4"

The PM350 mixes an XLR mic signal, 1/4 TRS

Stereo or mono 1/4" Instrument In with built-in

The obligation of Rolls Corporation under this warranty shall be

This product is warranted to the original consumer purchaser to be

Personal Monitor

Monitor Mixer Plus

PM350b Personal

LINE

INPUT

mono

stereo

lift

gnd

PM350b

Mixer Plus

MIC

THRU

PM350b

MIC

INPUT

PERSONAL
M
MIXER PLUS

INST.INLEFT

mon

ONITOR

OUT

ster

lift

RIGHT

OUT

gnd

DC IN

12 VDC

+

-

Salt Lake City, UT

1/03

Rolls Corporation

HEADPHONE

OUTPUTS

LINE

LEVEL

MIC

LEVEL

INST.

LEVEL

PWR

Owners Manual

INTRODUCTION

SPECIFICATIONS

Thank you for y our purchase of the PM350b P e rsonal Monitor Mixer Plus .
This unit mixes a microphone signal with a 1/4" Tip-Ring-Slee ve stereo or
mono instrument level signal and a 1/4" TRS stereo or mono monitor
signal. The Mic Input and Thru jacks have a s witchab le g round lift, as do
the 1/4" TRS Instrument Outputs. The instrument input connects to two
independent 1/4" TRS balanced outputs via electronic balancing circuits .

Max Input Level: -20 dB XLR, +40 dB Line, +15 dB Instrument
Inst. Input Impedance: 50K ohms
Inst. Output Freq. Response: 10 - 30 kHz +/- 3 dB
Output Impedance, Hdphn: 10 ohms
Output Impedance, Inst.: 2 ea; 100 ohms balanced
Gain: 20 dB 1/4", 50 dB XLR
Hdphn Freq. Response: 20 - 20 kHz
S/N Ratio: 90 dB

The PM350b is designed for perf ormers who want to monitor their own
sounds, such as their vocals and instruments, with the main mix via

Power: 9 - 16 VDC
Size (W x H x D): 4.5" x 3.3" x 1.5"
Weight: 1 lb (.45 Kg)

headphones or earphones. It's very popular with drummers who need to
mix a click track with a monitor signal. Church choir singers love the
PM350b to monitor their voices ov er the musicians.

USING THIS SYSTEM AT EXCESSIVE VOLUMES CAN CAUSE

WARNING

PERMANENT HEARING DAMA GE.

The PM350b is shipped with an external AC adapter .

INSPECTION

1. Unpac k and inspect the PM350b bo x and pac kage .

In order to use this system safely, avoid prolonged listening at excessive sound
pressure levels. Please use the following guidelines established by the Occupa­tional Safety Health Administration (OSHA) on maximum time exposure to sound
pressure levels before hearing damage occurs.

USE AS LOW A VOLUME AS POSSIBLE

If obvious physical damage is noticed, contact the carrier immediately to
make a damage claim. W e suggest sa ving the shipping carton and
packing materials for saf ely transporting the unit in the future.

90 dB SPL at 8 hours
95 dB SPL at 4 hours

100 dB SPL at 2 hours

2. Please complete the Warranty Registration Card and return it to the
factory.

105 dB SPL at 1 hour

110 dB SPL at 1/2 hour

115 dB SPL at 15 minutes

TABLE OF CONTENTS

120 dB SPL -

avoid or damage ma y occur

INTRODUCTION 1
INSPECTION 1
TABLE OF CONTENTS 1
DESCRIPTION 2
CONNECTION 3
OPERATION 4
SCHEMATIC 5
SPECIFICATIONS 6
WARRANTY BACK COVER

It is difficult to measure the exact Sound Pressure Levels (SPL) present at the
eardrum in live applications. In addition to the volume setting on this Personal
Monitor unit, the SPL in the ear is affected by ambient sound from floor wedges
or other devices. The isolation provided by the fit of quality earphones is also an
important factor in determining the SPL in the ear .
Follow these guidelines in the use of this product to protect your ears from
damage:

1. Turn up the volume only to the point where hearing is comfortable.

2. Ringing in the ears may indicate that the levels are too high. Lower the volume
level.

3. Have your ears checked by an audiologist on a regular basis. If you experience

This symbol indicates that there are
important operating and maintenance
instructions in the literature

1 6

accompanying this unit.

wax buildup in your ears, stop using the system until an audiologist has exam­ined your ears.

4. W ipe the earphones with an antiseptic before and after use to avoid infections.
Stop using the earphones if they are causing great discomfort or infection.