RTS LMS-325 User manual

USER MANUAL
Line Monitor Speaker
RTSTM
9350 - 7490 - 000 Rev E! 7/00

PROPRIETARY NOTICE
The RTSTMproduct information and design disclosed
herein were originatedby and are the property of Telex
Communications,Inc. Telex reservesall patent,
proprietary design, manufacturing, reproduction,use and
sales rightsthereto, and to any articledisclosed therein,
except to the extentrights are expressly granted to others.
COPYRIGHT NOTICE
Copyright 1995by Telex Communications,Inc.. All
rights reserved. Reproductionin whole
or in part without
prior written permission from Telex is prohibited.
UNPACKINGAND INSPECTION
Immediatelyupon receipt of the equipment,inspectthe
shippingcontainer and the contentscarefullyfor any
discrepancies
or damage. Shouldthere be any,notify the
freightcompany and the dealerat once.
WARRANTY INFORMATION
RTSTMproducts are warranted by Telex Communications,
lnc. to be free from defectsin materials and workmanship
for a period of three years fromthe date of sale.
The sole obligationof Telex during the warranty period is
to provide, without charge, parts and labornecessary to
remedy covered defects appearingin productsreturned
prepaid to Telex. This warranty does not cover any defect,
malfunctionor failurecaused beyond the control of Telex,
includingunreasonableor negligent operation,abuse,
accident,failuretofollow instructionsin the Service
Manual
or the User Manual, defective or improper
associatedequipment,attemptsat modification and repair
not authorizedby Telex, and shippingdamage. Products
with their serial numbers removed
or effacedare not
covered by this warranty.
To obtain warranty service,followthe procedures entitled
“ProcedureFor Returns” and “Shipping to Manufacturer
for Repair
or Adjustment”.
This warranty is the sole and exclusiveexpresswarranty
given with respect to RTSTMproducts. It is the
responsibilityof the user to determinebefore purchase
that this product is suitablefor the user’s intended
purpose.
ANY AND ALL IMPLIEDWARRANTIES,
INCLUDING
THE IMPLIED WARRANTY OF
MERCHANTABILITYARE LIMITED TO THE
DURATION
OF THISEXPRESS LIMITED
WARRANTY.
NEITHERTELEXNOR THE DEALER WHO SELLS
RTSTMPRODUCTS IS LIABLE FOR INCIDENTAL OR
CONSEQUENTIALDAMAGES OF ANY
KIND.
..
II LMS - 325 User Manual
CUSTOMER SUPPORT
Technicalquestions should be directedto:
Customer ServiceDepartment
RTS/Telex
12000Portland Avenue South
Burnsville,MN 55337 U.S.A.
Telephone: (952) 884
- 4051
Fax: (800) 323
- 0498
RETURNSHIPPING INSTRUCTIONS
PROCEDURE FOR RETURNS
If a repair is necessary,contactthe dealerwhere this unit
was purchased.
If repair through the dealer is not possible, obtain a
Return Authorizationfrom:
Customer ServiceDepartment
Telex Communications,Inc.
Telephone:(877) 863
- 4169
Fax: (800) 323 - 0498
Donot return any equipment directly to the factory
without first obtaininga Return Authorization.
Be prepared to provide the companyname, 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).
SHIPPINGTO MANUFACTURERFOR REPAIR OR
ADJUSTMENT
All shipmentsof RTSTMproducts should be made via
United Parcel Service or the best availableshipper,
prepaid. The equipmentshould be shipped in the original
packingcarton;if that is not available,use any suitable
containerthat is rigid and of adequate size. If a substitute
containeris used, the equipmentshouldbe wrapped in
paper and surroundedwith at least four inches of
excelsior
or similarshock-absorbingmaterial. All
shipmentsmust be sent to the followingaddress and must
includethe Return Authorization.
Factory ServiceDepartment
Telex Communications,Incorporated
West
1st Street
Blue Earth, MN 56013 U.S.A.
Upon completionof any repair the equipment will be
returned via United Parcel Service
or specified shipper
collect.

I
.
.
TABLE OF CONTENTS
.............................................
0
PROPRIETARY NOTICE ii
COPYRIGHT NOTICE ............................................... ii
UNPACKINGAND INSPECTION ......................................... ii
WARRANTY INFORMATION ........................................... ii
CUSTOMER SUPPORT .............................................. ii
RETURNSHIPPING INSTRUCTIONS ....................................... ii
SECTION 1: DESCRIPTIONAND SPECIFICATIONS ............................. 1 - 1
DESCRIPTION .................................................. 1 - 1
GENERAL .................................................... 1-1
FEATURES .................................................... 1 - 1
CONTROLS
................................................... 1 - 1
SPECIFICATIONS ................................................ 1 - 1
GENERAL .................................................... 1-1
CONNECTOR PINCONFIGURATIONS 1 - 1
SPEAKER AMPLIFIER: 1 - 1
SECTION2: OPERATION ........................................... 2 - 1
.....................................
.............................................
EXTERNALCONNECTIONS & CONTROLS .................................. 2 - 1
MOUNTINGCONFIGURATIONS ........................................ 2 - 1
SECTION 3 . REPLACEMENTPARTS ..................................... 3 - 1
WHERETO OBTAIN PARTS .......................................... 3 - 1
MECHANICALPARTS ............................................. 3 - 1
ELECTRICALPARTS .............................................. 3 - 1
SECTION 4 . DIAGRAMS ............................................ 4 - 1
I LMS - 325 User Manual iii

SECTION 1 : DESCRIPTIONAND
GENERAL
The LMS - 325 isa modular amplified speaker that
can be usedto monitor one or
two intercomor
programchannels. The
LMS - 325 is a five - watt,
eight
- ohmmodular amplified speaker for use with
RTS rackor console
- mountedintercom systems.
FEATURES
Featuresof the
LMS - 325 include:
Twomonaural phone jacksfor two separateaudio
inputs
One 3 - pin XLR connector for RTS intercom channels
one and
two
0 Controlto adjustvolume of speakeroutput
Control thatbalancesthe speaker’saudiolevel
between inputone and input two
0 Powered externallyfrom a Telex Wall Pack
@ CONTROLS
The
LMS - 325 hasthe following controls:
0 Detented volume controlto simultaneouslyadjustthe
speakerlevel for both input lines.
0 Controlto balancethe relativelevelof the input line
one and inputline
two.
SPECIFICATIONS
GENERAL
Impedance:
8 ohms
Power Rating:
5 Watts
Sensitivity:
90 32 dB/2.83V/meter on axis averaged over one
octavebands centered
at 250 Hz, 500 Hz, 1 kHz,
2 kHz, 4 kHz and 8 kHz when enclosedin a sealed
box with a volume of 1.3 liters.
Frequency Response:
200 Hz to 10 kHz k4 dB on 1/10octave measure -
ments in a sealedbox with avolume of 1.3 liters.
Free Air Resonance:
200 Hz to 250 Hz.
Stray MagneticField:
Less than 1 gauss at a distance of 1cm from chassis.
Mechanical Noise:
Free of buzzes and rattles with 5W sinewaveinput
from 100
Hz to 10 kHz.
Environmental Requirements:
Storage: - 20°C to 80°C; 0% to 95% humidity,
Operating: 0°C to 50°C; 0% to 95% humidity,
non
- condensing
noncondensing
Dimensions:
1.72” (44 mm) H x 8.2” (208 111111) W x 8“ (203 mm) D
Weight:
2 lbs 12 oz (1.25 kg)
CONNECTOR PINCONFIGURATIONS
SpeakerInputs
Type: RCA Phone Jacks
Tip Audio
Sleeve Common
Type: XLR3F
Pin 1 Common
Pin 2 RTS Channel 1audio
Pin 3 RTS Channel 2 audio
External Power
Type: 2.0 mm jack
Internalpin: positive
(+)
External shell: negative (-)
SPEAKER AMPLIFIER:
NOTE: Specificationsare for lNPUT 1 with the
balance controlset for minimumattenuation.
Specificationsfor
lNPUT 2 are identical.
Input Impedance:
47 m
Input Level:
0.7 Vrms
OutputAmplifierPower:
5W maximum, 4W continuous into 8R
Signal to Noise Ratio:
75 dB, reference2W into 85).
Total HarmonicDistortion:
Less than 0.5% at 2W nominal
Balance Control:
12 dB maximum relative attenuation
LMS - 325 User Manual 1-1

SECTION 2: OPERATION
EXTERNALCONNECTIONS &
CONTROLS
NOTE: The numbers refer to the calloutsin Figure2 - 1.
1. VolumeControl
Use
this control to simultaneouslyadjust the speaker
level for both speakerinputlines.
2. 12
- 15VDC Input Jack
The US-325is powered from aTelex@Wall Pack
(part number 532006
- 000). Plug the Wall Pack into
the 12
- 15VDC jack and into an AC outlet.
3. Balance Control
This control adjusts the relative level of the Input 1
and Input 2 (Channel 1and Channel 2, respectively).
Use a smallflat
- blade screwdriverto adjust the
control.
4. Audio InputJacks
These 1/4"monaural phonejacks can be
used to
connect audioinputs from someother line
- level
program sources (an auxiliaryoutputfrom a radio or
tapeplayer for example).
5. XLR Line Input Connector
This 3 - pin female XLR jack can be connected
directly to an
RTSm intercomline. The RTSm
intercomline may carry Channel 1, Channel 2 or
both channels.
MOUNTINGCONFIGURATIONS
Optionalmounting configurationsformodular RTSm
intercom stations are shown in Figure 2 - 2 and include
rack
- mount, console - mount, desk - topand portable
stations.
1
2 34 5
t
I
>
, I
0
1
@
0 & BAL
i
12 - 15 VDC LINELEVEL LINE
0
I
Figure 2 - 1. LMS-325 COM~C~~OIE and Controls

n
/’
,
’
n
Figure 2 - 2. Optional Mounting Configurations
2-2 LMS - 325 User Manual

SECTION 3. REPLACEMENTPARTS
WHERE TO OBTAIN PARTS
Parts may be obtaineddirectly from Telexat:
TelexRTS Systems
12000 Portland Ave. S.
Burnsville, MN 55337
Fax: 800
- 323 - 0498
877
- 863 - 4169
MECHANICAL PARTS
c
.--.-.A
Item No.
1
2
3
4
5
6
7
8
FINALASSEMBLY
$ferto Figure 4 - 1 for ItemNo. loc
Description
SpeakerAssembly
Gasket, Foam, Grey, 1/4
x 6
Case, Extruded
P. C. BoardAssembly, LMS325
Gasket, Rear Panel
Screw, Case, MCElMCS
Screw, 4 - 40 x 0.25
Screw, Plastite,4
- 20
Screw, 4
- 40 x 0.5
Panel, Rear, LMS325
Nut, Hex, #4
ions)
Part No.
See Fig. 4 - 2
4501
- 0076 - 02
9060
- 6260 - 00
See Fig. 4
- 3
4501
- 0076 - 00
9160
- 6305 - 00
51 845 - 038
51856
- 005
51845
- 039
9080
- 7490 - 000
52188
- 006
r-
i
Item No.
1
2
3
4
5
6
7
B
9
10
11
12
13
14
15
16
17
18
SPEAKER GRILL ASSEMBLY
Referto Figure
4 - 2 for ItemNo. loci
Description
Bezel, Speaker, MCS325
Grill, Speaker, LMS325hlCS325
Label, LMS325
Spacer, #6
Bracket, Mounting
Screw, 6
- 32 x 0.75
Screw, 6
- 32 x 0.25
Spacer, #4
Speaker, 8R, 5W
Screw, 4
- 40 x 0.375
Housing, Conmector, 2
- pin
Terminal,Crimp, Snap
- in
Not Used
Not Used
Not Used
Potentiometer,10
WT
Bracket, Mounting
Knob, Grey
Ions)
Part No.
9070 - 6264 - 00
9070
- 7490 - 000
9170
- 6633 - 002
1001
- 0014 - 00
9110
- 6649 - 00
51845
- 079
51845
- 074
1001
- 0142 - 00
2609-0011 - 00
1008
- 4035 - 00
52264
- 002
54460
- 001
54131
- 006
9110
- 7490 - 000
2703
- 0034 - 00
ELECTRICAL PARTS
1
r
Ref. No.
e1
c2
c3
c4
c5
C6
c7
C8
c9
c10
c11
c12
C13
C14
C15
Dl
D2-D5
D6
F1
J1
J2
J3
J4
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
R16
R17
R18
R19-R26
R27
u1
P. C. BoardASSEMBLY
:Referto Figure 4 - 3 for Reference I
Description
Zapacitor, CM, 0.1 pF, 50V
Zapacitor, CM, 0.1 pF, 50V
Zapacitor, CM, 0.22 pF, 50V
Sapacitor,CM, 0.22 pF, 50V
Sapacitor,CM, 1 pF, 50V
Sapacitor,CM, 0.33 pF, 50V
Sapacitor, NP,47 pF, 35V
Sapacitor, NP,47 pF, 35V
Capacitor, EL, 10
pF, 25V
Capacitor, EL, 47 pF, 25V
Capacitor, EL, 47 pF, 25V
Capacitor, EL, 100pF, 25V
Capacitor, EL, 100pF, 25V
Capacitor, EL, 470
pF, 35V
Capacitor, CM, 1pF, 50V
Diode, IN4001,50V
Not Used
Diode, Zener, 17V, 1N5354
Fuse, FastActing, 2A
Connector, RA DualRCA
- Type
Jack, Yellow
Connector, DC Power Jack,
2.0 mm
Connector, ST Locking, 0.100,
M-:
Connector, RA XLR, F - 3
Resistor, MF, 1
WT, 1%, 1/4W
Resistor, MF, 2 WT, 1%, 1/4W
Resistor, MF, 100 kR, 1%, 1/4W
Resistor,MF, 100 WT, 1%,1/4W
Resistor, MF, 11.5 la, 1%, 1/4W
Not Used
Resistor,CF, 1.8
kR, 5%, 1/4W
Resistor,CF, 100 kn, 5%, 1/4W
Resistor,CF, 100 kR, 5%, 1/4W
Resistor, MF, 1 WT, 1%, 1/4W
Resistor,CF, 47 kR, 5%, 1/4W
Resistor,CF, 0 R, 5%, 1/4W
Potentiometer, 10 kR, 30%, 0.08vI
Resistor, CF, 47 kR, 5%, 1/4W
Resistor, MF, 1 kR, 1%,1/4W
Resistor,MF, 11.5 kR, 1 Yo, 1/4W
Resistor,CF, 0 R, 5%, 1/4W
Potentiometer, 10 kR, 20%, 0.IW
Not Used
Resistor,CF, 2.7
a, 5%, 1/4W
IC, Audio Amp, TDA 1515
L
Part No.
52676 - 613
52676
- 613
52676
- 615
52676
- 615
52676
- 517
52676
- 512
52710
- 068
52710
- 068
51821
- 622
51821
- 625
51821
- 625
51821
- 626
51821
- 626
51821
- 012
52676
- 517
50745
- 01 0
86770-003
59874-008
20180090 - 00
59697
- 001
57721
- 002
59893
- 003
54044-1 00
54044 - 200
54046
- 1 00
54046-1 00
54045-115
521
54-275
52154 - 233
52154
- 233
54044
- 1 00
52154-241
52154-971
14060044 - 00
521
54-241'
54044 - 1 00
54045 - 115
52154-971
14090060 - 00
52154
- 343
59616
- 000
LMS - 325 User Manual 3 - 1

SECTION 4. DIAGRAMS
0
Drawing Number Titie
9010 - 7490 - 000 Figure 4 - 1.Final Assembly, LMS - 325
9020
- 7490 - 000 Figure 4 - 2. Speaker Grill Assembly, LMS - 325
9030-7490-000 Figure 4 - 3. P. C. Board Assembly,LMS - 325
9027
- 7490 - 000 Figure 4 - 4. Schematic,LMS - 325
LMS-325 User Manual 4 - 1

c
-I
D1R7
Jl
C8
U
U
R11
R14
U
ASSY 9888-7498-008 REV,,,,
i
N I
Figure 43. LMS-325 PC Board Assembly
9030-7490-000