USL CM-10 User Manual

CM SERIES

Ten Channel

Monitor / Crossover

181 Bonetti Drive
San Luis Obispo, CA 93401
ph: 805-549-0161
fax: [phone]
e-mail:[e-mail]

One Year Limited Warranty

USL, Inc. warrants that each product manufactured by it will be
free from defects in material and workmanship under normal usage
for a period of one (1) year after its purchase new from an authorized
dealer. Our obligation under this warranty is limited to repairing
or replacing any product or component which we are satisfied does
not conform with the foregoing warranty and which is returned to
our factory, freight paid, or serviced by one of our authorized
contractors. The forgoing warranty is exclusive and in lieu of all
other warranties, whether expressed or implied. Such warranty
shall not apply to any product or component (A) repaired or altered
by anyone other than USL, Inc. or an authorized service contractor;
(B) tampered with or altered in any way or subjected to misuse,
negligence or accident or (C) which has been improperly connected
installed or adjusted other than in accordance with USL, Inc.’s
instruction.

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Table of Contents

Introduction .........................................................4

Front Panel Description........................................5

Rear Panel Description.........................................7

Installation............................................................9

Monitor and Bargraph Setup...............................13

Monitor and bargraph Levels..............................14

Specifications.....................................................15

Pinouts...............................................................17

Please record the following information for your records:
Model: ___________________ Serial Number: ___________
Date of Purchase: ________________
Purchased from: ____________________________________

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Introduction

Please read this entire manual before commencing your
installation.

The Ultra Stereo CM Series Projection Booth Monitor has been
designed for high performance, ease of use, and years of trouble free
service. Installation and setup of the monitors has been
considerably simplified. No special tools are required. The built in
VU meter and test jack give the technician immediate information
about the status of the processor and all power amplifiers.
All controls necessary for daily operation of the processor are
easily accessible on the front panel. The components that make
up the CM Series monitors are of computer grade for reliability. All
front panel controls are individually sealed for long life. All
Ultra Stereo equipment has been “burned-in” at the factory for
an extended period in order to eliminate the possibility of
premature failure. Unpack the unit carefully. If the container has
been damaged, thoroughly inspect the equipment to make
certain that there is no hidden damage. File a claim immediately
with the carrier if any damage is found. Also advise your dealer
or the factory.

TOOLS REQUIRED

Trimpot

adjustment

tool

Small, standard

screwdriver

No. 2 Phillips

screwdriver

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Wire

Strippers

You will need to supply the following materials:

• Shielded audio cable for connecting the CM Series to the
cinema processor and power amplifier outputs.

• Four 10-32 x 1/2" screws to mount the CM Series in the audio
equipment rack.

FEATURES

The CM Series monitor has the following standard features:

• Ten-Channel Monitoring - allows you to monitor either the
processor or power amplifier outputs to left, left center, center,
right center, right,surround left, surround right, back surround
left, back surround right and subwoofer channels, in any
combination via the switches on the front panel (see illustration
on pg. 5)

• Input levels from processor and power amplifier can be
adjusted independently - no huge level jumps when switching
between processor and power amplifiers.

• Bargraph display may be calibrated to the reference level
for your theatre – the projectionist can see auditorium levels
instantly.

• Designed to work with bi or tri-amplified sound systems to
monitor the high, mid and low frequency outputs from the left,
left center*, center, right center* and right channels.

• Line output for remote monitoring with an external amplifier
and speaker.

*Left center, right center only available with inst allation of optional
card.

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9

7 8
6

5

4

3

2

1. Channel select buttons - pressing a Channel Select Button causes the corresponding LED to illuminate

and the signal from that channel to be monitored. Any combination of ten channels can be selected.

2. Internal Digital or Analog Crossover Access Cover.

3. Crossover Bypass Switch - Switching this will cause the internal crossover to be bypassed or engaged

and the condition will be indicated by its appropriate LED.

4. Volume Control - controls the volume of the internal speaker and test jack (7). The volume control

has no effect on the VU Bargraph display.

5. Processor/Amplifier Selector Switch - selects either the inputs from the cinema processor or power

amplifiers for monitoring.

6. VU Bargraph - displays the level of the selected channels. The VU Bargraph may be calibrated by

the rear panel trim adjustment (Figure 2). The VU Bargraph operates independently of the volume

control (4).

7. Test Jack - permits monitoring of the audio output of the CM Series. Inserting a mono or stereo 1/4”

1

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phone plug here disables the internal speaker and routes the audio output to the Test Jack. Do

not connect any device here with less than 8 Ohms impedance.

8. Internal Speaker

9. Power Switch