Atlas TSD-RL21 User manual

Owner’s Manual
TSD-RL21
2x1 Mic/Line Mixer
AtlasSound.com– 1 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
TSD-RL21
2x1 Mic/Line Mixer with Remote Level

Owner’s Manual
TSD-RL21
2x1 Mic/Line Mixer
AtlasSound.com – 2 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Description
The versatile Atlas Sound TSD-RL21 2x1 mic/line mixer is ideal for applications where paging, public
address, and BGM music is required.
Use as a standalone remote mixer or in conjunction with Atlas Sound power amplifiers in applica-
tions such as conference center meeting rooms, football stadiums, gymnasiums, retail/hospitality or
other areas requiring versatile, multi source mix control.
Channel one may be configured via rear panel dipswitch to accommodate mic or line level while
channel two features a stereo summing RCA line level input. Both inputs are adjustable by front
panel controls with removable knobs, which may be easily replaced by security covers to prevent
tampering.
The remote level control feature allows use of the Atlas Sound AAVC-10K (or equal) decorative wall
plate control for convenient remote adjustment of either the entire mix bus or RCA input 2 only (the
typical BGM input).
The TSD-RL21 is part of a full line of Atlas Sound Time Saving Devices. These compact
(1.5" x 4" x 2.75") units are designed to solve some of the common audio system problems in the
easiest and in the most efficient and cost-effective way. All models are made from high quality
components and include removable individual I/O connectors for quick and precise wiring, separate
ground terminals for all I/Os assuring secured connections, and removable level controls that can be
replaced with tamper-proof security covers.
Features
 • Selectable Balanced Mic or Line Input
 • RCA Actively Summed Input
 • High Gain Mic Input 50dB
 • Balanced Line Output
 • InputPeak&SignalIndicatorLEDs
 • RemoteLevelControlAssignabletothe
Mixed Signal or to a BGM Source
 • High Gain Output for Driving Long
Balanced Lines
 • CableManagementSystem
 • MultipleMountingCongurations
 • SeparateGroundConnections
 • RemovablePhoenixStyleI/OConnectors
 • MeetsEnergyStar™ Standards
 • CompactChassisDesign
Audio Applications
 • Mixer
 • MicPreamp
 • LinePreamp
 • StereoSummingPreamp
 • LineDrive
 • RemoteLevelControl
Installation
 • Churches
 • Restaurants
 • SportsBars
 • Schools
 • IndustrialFacilities
 • HouseofWorship

Owner’s Manual
TSD-RL21
2x1 Mic/Line Mixer
AtlasSound.com– 3 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Front Panel Description
1. Input Level Controls 1-2 - Adjusts audio signal level that is appled to the RL-21 input circuitry. Turn
clockwise to increase the signal level and counter-clockwise to decrease it. Note: The Input Level
Control knobs can be removed and replaced with a supplied security cover to prevent
unauthorized adjustment.
2. Power LED-IlluminatesBLUEwhen24VDCpowerispresent.
3. Input Peak LED - Illuminates Red when the input signal reaches 3dBV below when signal clipping
will occur. Occasional flashing is normal but if this indicator is continuously On, then reduce the
input level using the input level control on the front panel.
4. Signal LED - Illuminates Green when the input signal strength reaches 25mV to verify a signal
path.
5. Bracket Retainer Points-EachTSDincludestwomountingbracketsforsecuringtheTSDtoa
 cabinetorwall.Removescrewsandalignthebracketwiththepanelholebeforermlytightening 
the screws.
2
4
3
1
55
5 5

Owner’s Manual
TSD-RL21
2x1 Mic/Line Mixer
AtlasSound.com – 4 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Rear Panel Description
TSD Input/Output connections are removable for easy system wiring. The connector has a 3.5mm
pitch between pins.
1. DC Power Input-EachTSDthatrequiresDCpowercomeswitha2positionconnectorfor 
an external 24VDC power supply (sold separately). Because of the TSD’s low power consumption,
 asingleexternalpowersupplymaypowermorethanoneTSD.Pleaserefertothespecications 
on current requirements in milliamps to match with the appropriate power supply. Note: It is
acceptable to exceed the current requirements of the TSDs but NOT safe to use a power supply
that is below the current requirement of the device.
2. Mic/Line Input 1 - Connects to balanced line or mic level sources. Your connection must be mated
 properlytotheinputconnectororsignallossand/ornoisemayoccur.Forgainorsourceinput
 typeselection,refertothe“DipSwitchFunctionIdentication”chartforproperinputsetting. 
Note:Unbalancedlinelevelinputscanbeinsertedwithproperwirecongurationbyconnecting 
the (G) and (-) terminals together.
3. RCA Input 2 - Unbalanced audio signals applied to these female RCA connectors are summed
electronically and fed to the output.
4. Line Output-Providesoutputwhenaninputsignalispresentforconnectiontobalancedmicor 
line level devices. Your output connections must be connected properly to the connectors or loss
and/or noise may be introduced into the signal. Note: Unbalanced line level devices can be used
 withproperwirecongurationbyconnectingthe(G)and(-)terminalstogether.
5. Remote Level-ForremotegaincontroloftheRL21,connecttheAtlasSoundAAVC-10K(orequal) 
wall plate to this terminals. Set Dip Switch 8 for the remote level to control a mixed signal or Input
3 signal only.
6. Cable Management Retainer Points - Use rear panel screws to secure included cable
management retainers.
1 2 3
66
6 6
4
5

Owner’s Manual
TSD-RL21
2x1 Mic/Line Mixer
AtlasSound.com– 5 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Dip Switch Function Identification
Switch Position
 • DIPSW#1-MicrophoneorLineInput1gainselection.UppositionisLine,downposition 
Microphone.
 • DIPSW#2-RemoteLevelsetswhethertheremotevolumecontroladjustsallinputsmixedor 
Input 2 only. Up position is Input 2 (RCAs) only, down position is both Input 1 and Input 2.
Knob and Security Cover
All front panel level controls feature a removable knob that can be replaced with an included security
cover.Followthesestepstopreventpotentiometerdamageorunwantedchanges.
1. Knob Installation - Turn the potentiometer shaft fully counter-clockwise. Align the knob indicator
to the lowest setting on the panel and the potentiometer shaft slot. Carefully press the knob onto
the potentiometer shaft. Do not force or damage may occur to the potentiometer.
2. Security Cover Installation – Remove the knob from the panel and insert the cover. Do not force or
damage may occur to the potentiometer. Small pliers may be required to remove the knobs.
Mounting
There are three ways to securely mount this TSD:
1. Velcro™-EachunitincludesindustrialgradeVelcro™ with adhesive backing to adhere to any
flat surface.
2. Brackets-Eachunitincludestwomountingbracketstosecuretoacabinetorwall.
3. RackMountPanel-TheoptionalTSD-RMKrackmountpanelsupportsuptofourTSDsina
1RU space.
SWITCH FUNCTIONS

Owner’s Manual
TSD-RL21
2x1 Mic/Line Mixer
AtlasSound.com – 6 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Specifications
Description 2 x 1 Mic/Line Mixer with Remote Level
Chassis Color Black
Chassis Material Aluminum
Inputs
Type Qty 1, Unbalanced
Connection RCA Left and Right Actively Summed
Impedance 10KΩ
Input Level 316mV (-10dBV) = 2V (+6dBV) Balanced Output,
Maximum Input 1.6V (4.1dBV)
Type Qty 1, Balanced Mic or Line Selectable
Connection Removable3PositionCaptiveScrew3.5mmSpacing
Impedance 1.2KΩBalanced, 600ΩUnbalanced
Line Input Level 1V (0dBV) Balanced = 2V (+6dBV) Balanced Output,
Maximum Input 6V (15dBV)
Mic Input Level 46dB Gain 10mV (-40dBV) Balanced = 2V (+6dBV) Balanced Output,
Maximum Input 40mV (-27dBV)
Block Diagram
INPUT 1
INPUT 1
LEVEL
FRONT PANEL
MIC/LINE
DIP SWITCH FUNCTION SET
REMOTE
LEVEL
REMOTE LEVEL
FRONT PANEL
OUTPUT
SIGNALPEAK
INPUT 2
LEVEL
FRONT PANEL
24V
DC 24V
POWER SHOW
LED
G
–
+
G
–
+
INPUT 2
L
R
1 2
1
INPUT
LINE
MIC
2
VCA
RCA
MIXED

Owner’s Manual
TSD-RL21
2x1 Mic/Line Mixer
AtlasSound.com– 7 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Outputs
Type Qty 1, Balanced Line
Connection Removable3PositionCaptiveScrew3.5mmSpacing
Impedance 300ΩBalanced, 150ΩUnbalanced
Line Output Level 1V (0dBV) In = 2V (+6dBV) Balanced, Maximum Output 6V (15dBV)
Controls
Input Level Control Qty 2, Removable Knobs with Security Covers
RemoteLevel ControlPort10KExternalPot,
 Removable2PositionCaptiveScrew3.5mmspacing
DipSwitchFunction •Input1,Mic/LineSelect
 •RemoteLevelAssign,MixorInput2
Indicators
Input Signal Green, 25mV On Threshold
InputPeak Red,-3dBBeforeClip
Power Blue
Electrical
FrequencyResponse 20Hz-20kHz(±1dB)
THD .06%&1kHz
Signal to Noise Line to Line: 85dBV
Mic to Line: 70dBV
Mounting
Velcro™ Industrial Grade, Included
Brackets Qty 2, Included
TSD-RMK Optional1RURackMountPanel(Supports4TSDUnits)
Cable Retainer Qty 2, Included
Power Requirements
Voltage 24VDC
PowerConsumption 60mA
PowerConsumption 1.4W
Dimensions H1.5"(39mm)xW4"(101mm)xD2.75"(70mm)
Weight 6oz,.165kg
Accessories
TSD24VDCPowerSupplies
TSD-RMK1RURackPanel
Safety and Certifications
ExternalPowerSupply cUL,CE,RoHS,TUV

Owner’s Manual
TSD-RL21
2x1 Mic/Line Mixer
AtlasSound.com – 8 –
Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: [phone] • Fax: [phone]
Limited Warranty
All products manufactured by Atlas Sound are warranted to the original dealer/installer, industrial or
commercial purchaser to be free from defects in material and workmanship and to be in compliance
with our published specifications, if any. This warranty shall extend from the date of purchase for
aperiodofthreeyearsonallAtlasSoundproducts,includingSOUNDOLIERbrand,andATLAS
SOUND brand products except as follows: one year on electronics and control systems; one year on
replacement parts; and one year on Musician Series stands and related accessories. Additionally,
fuses and lamps carry no warranty. Atlas Sound will solely at its discretion, replace at no charge or
repair free of charge defective parts or products when the product has been applied and used in
accordancewithourpublishedoperationandinstallationinstructions.Wewillnotberesponsible
for defects caused by improper storage, misuse (including failure to provide reasonable and
necessary maintenance), accident, abnormal atmospheres, water immersion, lightning discharge,
or malfunctions when products have been modified or operated in excess of rated power, altered,
serviced or installed in other than a workman like manner. The original sales invoice should be
retained as evidence of purchase under the terms of this warranty. All warranty returns must comply
withourreturnspolicysetforthbelow.WhenproductsreturnedtoAtlasSounddonotqualifyfor
repair or replacement under our warranty, repairs may be performed at prevailing costs for material
and labor unless there is included with the returned product(s) a written request for an estimate
of repair costs before any nonwarranty work is performed. In the event of replacement or upon
completion of repairs, return shipment will be made with the transportation charges collect.
EXCEPTTOTHEEXTENTTHATAPPLICABLELAWPREVENTSTHELIMITATIONOFCONSEQUENTIAL
DAMAGESFORPERSONALINJURY,ATLASSOUNDSHALLNOTBELIABLEINTORTORCONTRACT
FORANYDIRECT,CONSEQUENTIALORINCIDENTALLOSSORDAMAGEARISINGOUTOFTHE
INSTALLATION,USEORINABILITYTOUSETHEPRODUCTS.THEABOVEWARRANTYISINLIEUOF
ALLOTHERWARRANTIESINCLUDINGBUTNOTLIMITEDTOWARRANTIESOFMERCHANTABILITY
ANDFITNESSFORAPARTICULARPURPOSE.
Atlas Sound does not assume, or does it authorize any other person to assume or extend on its
behalf, any other warranty, obligation, or liability. This warranty gives you specific legal rights and
you may have other rights which vary from state to state.
Service
Should your Atlas TSD require service, please contact the Atlas Sound
warranty department at 1-877-689-8055, ext. 1274 to obtain an RA number.
Atlas Sound Tech Support can be reached at 1-800-876-3333.
Visit our website at www.AtlasSound.com to see other Atlas products
©2010AtlasSoundL.P.Allrightsreserved.AtlasSoundisatrademarkofAtlasSoundL.P.
All other trademarks are the property of their respective owners. ATS003946 RevA 11/10