RTS LMS-325 User Manual
User Manual
LMS-325
Line Monitor Speaker
RTS
LMS325
VOLUME
9350-7490-000 Rev D 11/2006
PROPRIETARY NOTICE
SHIPPING TO THE MANUFACTURER
The product information and design disclosed herein were originated by
and are the property of Telex Communications, Inc. Telex reserves all
patent, proprietary design, manufacturing, reproduction, use and sales
rights thereto, and to any article disclosed therein, except to the extent
rights are expressly granted to others.
COPYRIGHT NOTICE
Copyright 2006 by Telex Communications, Inc. All rights reserved.
Reproduction, in whole or in part, without prior written permission from
Telex is prohibited.
WARRANTY NOTICE
See the enclosed warranty card for further details.
CUSTOMER SUPPORT
Technical questions should be directed to:
Customer Service Department
RTS/Telex Communications, Inc.
12000 Portland A venue South
Burnsville, MN 55337 USA
Telephone: 800-392-3497
Fax: 800-323-0498
All shipments of product should be made via UPS Ground, prepaid (you
may request from Factory Service a different shipment method). Any shipment upgrades will be paid by the customer. The equipment should be
shipped in the original packing carton. If the original carton is not available, use any suitable container that is rigid and of adequate size. If a substitute container is used, the equipment should be wrapped in paper and
surrounded with at least four (4) inches of excelsior or similar shockabsorbing material. All shipments must be sent to the following address
and must include the Proof of Purchase for warranty repair. Upon completion of any repair the equipment will be returned via United Parce l Service
or specified shipper, collect.
Factory Service Department
Telex Communications, Inc.
8601 East Cornhusker Hwy.
Lincoln, NE 68507 U.S.A.
Attn: Service
This package should include the following:
RETURN SHIPPING INSTRUCTIONS
Customer Service Department
Telex Communications, Inc. (Lincoln, NE)
Telephone: 402-467-5321
Fax: 402-467-3279
Factory Service: 800-553-5992
Please include a note in the box which supplies the company name,
address, phone number, a person to contact regarding the repair , the type
and quantity of equipment, a description of the problem and the serial
number(s).
CHAPTER 1
CHAPTER 2
CHAPTER 3
Description and Specifications ....................................................................................1
General Description ....................................................................................................2
Features .......................................................................................................................2
Controls .......................................................................................................................2
Specifications ...............................................................................................................2
General ....................................................................................................................2
Connector Pin Configurations .....................................................................................3
Speaker Amplifier ........................................................................................................3
Operation .....................................................................................................................5
External Connections & Controls ...............................................................................6
Mounting Configurations ............................................................................................7
Replacement Parts .......................................................................................................9
Where to Obtain Parts ...............................................................................................10
Mechanical Parts .......................................................................................................10
CHAPTER 4
Drawings ...................................................................................................................15
What you will find in this chapter:
•General Description
•Features
•Controls
•General Specifications
•Connector Pin Configurations
•Speaker Amplifier Specifications
CHAPTER 1
Description and Specifications
1
Description and Specifications
General Description
The LMS-325 is a modular amplified speaker that can be used to maonitor one or two intercom or program channels. The
LMS-325 is a five-watt. eight-ohm modular amplified speaker for use with RTS rack or console-mounted intercom systems.
Features
Features of the LMS-325 include:
• Two monaural phone jacks for two separate audio inputs.
• One 3-pin XLR connector for RTS intercom channels one and two.
• Control to adjust volume of speaker output.
• Control that balances the speaker’s audio level between input one and input two.
• Power externally from a Telex Wall Pack.
Controls
The LMS-325 has the following controls:
• Detented volume control to simultaneously adjust the speaker level for both input lines.
• Control to balance the relative level of the input line one and input line two.
Specifications
General
Impedence
8 ohms
Power Rating
5 watts
Sensitivity
90± dB/2.83V/meter on axis averaged over one octave bands centered at 250 Hz, 500 Hz, 1 kHz, 2 kHz, 4 kHz and 8 kHz
when enclosed in a sealed box with a volume of 1.3 liters.
Frequency Response
200 Hz to 10 kHz ± dBon 1/10 octave measurements in a sealed box with a volume of 1.3 liters.
Free Air Resonance
200 Hz to 250 Hz
Stray Magnetic Field
Less than 1 gauss at a distance of 1 cm from chassis.
Mechanical Noise
Free of buzzes and rattles with 5W sinewave input from 100 Hz to 10 kHz
2
Connector Pin Configurations
Environmental Requirements
Storage: -20°C to 80°C; 0% to 95% humidity, non-condensing.
Operating: 0°C to 50°C; 0% to 95% humidity, non-condensing.
Dimensions
1.72” (44mm)H x 8.2”(208mm)W x 8” (203”)D
Weight
2 lbs. 12 oz. (1.25kg)
Connector Pin Configurations
Speaker Inputs
Type: RCA Phone Jacks
Tip: Audio
Sleeve: Common
Type: XLR-3F
Pin 1 Common
Pin 2 RTS Channel 1 audio
Pin 3 RTS Channel 2 audio
External Power
Type: 2.0 mm jack
Internal pin: positive (+)
External shell: negative (-)
Speaker Amplifier
NOTE: Specifications are for INPUT 1 with the balance control set for minimum attenuation. Specifications for INPUT 2 are
identical.
Input Impedance
47 kΩ
Input Level
0.7 Vrms
Output Amplifier Power
5 W maximum, 4 W continuous into 8 Ω
Signal to Noise Ratio
75 dB, reference 2 W into 8 Ω
Total Harmonic Distortion
Less than 0.5% at 2 W nominal.
Balance Control
12 dB maximum relative attentuation.
3
Description and Specifications
4
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