AtlasIED TSD-RL21 2x1 mic/line mixer, TSD-RMK, TSD-RMKHR, TSD-RRMK, AAVC-10K TSD, HR WMA-HR WMA, HR AWR-HR AWR Owner's Manual
Below you will find brief information for 2x1 mic/line mixer TSD-RL21, TSD TSD-RMK, TSD TSD-RMKHR, TSD TSD-RRMK. The TSD-RL21 is a compact and versatile mixer that can be used for a variety of applications. It has two inputs: one selectable balanced mic or line input and one stereo-summing RCA line-level input. The unit can be mounted in a variety of ways and includes a remote control option for volume adjustment.
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Owner’s Manual
TSD-RL21
2x1 Mic/Line Mixer
TSD-RL21
2x1 Mic/Line Mixer with Remote Level
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800.876.3333 • Fax: 800.765.3435
Specifications are subject to change without notice.
TSD-RL21
2x1 Mic/Line Mixer
Owner’s Manual
Description
The versatile AtlasIED 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 AtlasIED power amplifiers in applications 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 AtlasIED 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 AtlasIED 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
Lines
• Cable Management System
• Multiple Mounting Configurations
• 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
AtlasIED.com
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800.876.3333 • Fax: 800.765.3435
– 2 –
Specifications are subject to change without notice.
Owner’s Manual
Front Panel Description
TSD-RL21
2x1 Mic/Line Mixer
3
4
2
1
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.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800.876.3333 • Fax: 800.765.3435
Specifications are subject to change without notice.
TSD-RL21
2x1 Mic/Line Mixer
Rear Panel Description
6
5
4
6
Owner’s Manual
6
6
1 2 3
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 specifications
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 Identification” chart for proper input setting.
Note: Unbalanced line level inputs can be inserted with proper wire configuration 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 configuration by connecting the (G) and (-) terminals together.
5. Remote Level - For remote gain control of the RL21, connect the AtlasIED 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 - Each TSD includes two cable retainer straps for securing
the included cable management retainers. Remove one of the rear panel screws, align the
panel hole with a retainer and firmly tighten the screws.
AtlasIED.com
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800.876.3333 • Fax: 800.765.3435
– 4 –
Specifications are subject to change without notice.
Owner’s Manual
Dip Switch Function Identification
SWITCH FUNCTIONS
TSD-RL21
2x1 Mic/Line Mixer
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.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800.876.3333 • Fax: 800.765.3435
Specifications are subject to change without notice.
TSD-RL21
2x1 Mic/Line Mixer
Cable Management
Owner’s Manual
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. Small pliers may
be required to remove the knobs. Align the security cover to the level control panel hole. Push the
cover into the hole until it snaps into place. Do not force or damage may occur to the potentiometer.
AtlasIED.com
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800.876.3333 • Fax: 800.765.3435
– 6 –
Specifications are subject to change without notice.
Owner’s Manual
TSD-RL21
2x1 Mic/Line Mixer
Mounting
Listed below are the ways to mount the TSD and the optional accessories that can be purchased.
1. Velcro™ - Each unit includes two 2" x 2" pieces of industrial-grade Velcro™ with adhesive backing
to adhere to any flat surface. Clean all surfaces before applying the adhesive side of the Velcro™.
2. Multi Mount Plate - Each TSD includes a versatile multi-position mounting plate. This plate
allows the TSD to be mounted to any surface; but is ideal for use with rear rack rails or side rack
hat channels. Use the included M3 x 4mm screws to install the plate on the TSD. Note: Only use
the included M3 x 4mm screws as other screws may be too long and will cause internal damage
to the TSD. The multi-position mounting plate is a new addition being included with TSDs. If the
TSD being used did not include the mounting plate, contact AtlasIED customer service at
1-800-876-3333.
(M3 x 4mm)
(M3 x 4mm)
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800.876.3333 • Fax: 800.765.3435
Specifications are subject to change without notice.
TSD-RL21
2x1 Mic/Line Mixer
Owner’s Manual
Optional Mounting Accessories
1. TSD-RMK 19" Width Rack Mount Kit - For 19" rack mounting, AtlasIED offers an optional rack
mount kit, the TSD-RMK. This rack mount kit can support up to four TSD units. The kit includes
three blank panels designed to fill any unused slots. Use the included hardware to mount the TSD
into the rack mount kit using the top mount screw holes on the TSD.
2. TSD-RMKHR Half Width Rack Mount Kit - AtlasIED offers an optional rack mount kit that can
be used in half width rack applications including the AtlasIED WMA-HR and AWR-HR models.
The TSD-RMKHR can support up to two TSDs. Included is an extra blank panel to fill one of the
spaces if only one TSD is being used.
AtlasIED.com
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800.876.3333 • Fax: 800.765.3435
– 8 –
Specifications are subject to change without notice.
Owner’s Manual
TSD-RL21
2x1 Mic/Line Mixer
3. TSD-RRMK Rear Rack Mounting Kit - For complete flexibility in mounting a TSD or TSD external
power supplies the optional TSD-RRMK is available. The TSD-RRMK can support mounting of
either two larger TSDs with external power supplies or up to 4 TSD models. Note: Only use the
included M3 x 4mm screws as other screws may be too long and will cause internal damage to
the TSD.
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800.876.3333 • Fax: 800.765.3435
Specifications are subject to change without notice.
TSD-RL21
2x1 Mic/Line Mixer
Block Diagram
MIC/LINE
DIP SWITCH FUNCTION SET
1
INPUT
LINE
MIC
2
VCA
RCA
MIXED
1 2
INPUT 1
+
–
G
INPUT 1
LEVEL
FRONT PANEL
REMOTE
LEVEL
INPUT 2
R
L
INPUT 2
LEVEL
FRONT PANEL
24V
POWER SHOW
LED
DC 24V
Owner’s Manual
PEAK
FRONT PANEL
REMOTE LEVEL
SIGNAL
OUTPUT
+
–
G
Specifications
Description
Chassis Color
Chassis Material
2 x 1 Mic/Line Mixer with Remote Level
Black
Aluminum
Inputs
Type
Connection
Qty 1, Unbalanced
RCA Left and Right Actively Summed
Impedance 10KΩ
Input Level 316mV (-10dBV) = 2V (+6dBV) Balanced Output,
Maximum Input 1.6V (4.1dBV)
Type
Connection
Qty 1, Balanced Mic or Line Selectable
Removable 3 Position Captive Screw 3.5mm Spacing
Impedance 1.2KΩ Balanced, 600Ω Unbalanced
Line Input Level
Mic Input Level
1V (0dBV) Balanced = 2V (+6dBV) Balanced Output,
Maximum Input 6V (15dBV)
46dB Gain 10mV (-40dBV) Balanced = 2V (+6dBV) Balanced Output,
Maximum Input 40mV (-27dBV)
AtlasIED.com
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800.876.3333 • Fax: 800.765.3435
– 10 –
Specifications are subject to change without notice.
Owner’s Manual
TSD-RL21
2x1 Mic/Line Mixer
Outputs
Type
Connection
Qty 1, Balanced Line
Impedance 300Ω Balanced, 150Ω Unbalanced
Line Output Level
Removable 3 Position Captive Screw 3.5mm Spacing
1V (0dBV) In = 2V (+6dBV) Balanced, Maximum Output 6V (15dBV)
Controls
Input Level Control
Remote Level
Dip Switch Function
Qty 2, Removable Knobs with Security Covers
Control Port 10K External Pot,
Removable 2 Position Captive Screw 3.5mm spacing
• Input 1, Mic/Line Select
• Remote Level Assign, Mix or Input 2
Indicators
Input Signal
Input Peak
Green, 25mV On Threshold
Red, -3dB Before Clip
Power Blue
Electrical
Frequency Response
THD
Signal to Noise
20Hz - 20kHz (±1dB)
.06% & 1kHz
Line to Line: 85dBV
Mic to Line: 70dBV
Power Requirements
Voltage 24VDC
Power Consumption
Power Consumption
60mA
1.4W
Dimensions
Weight
H 1.5" (39mm) x W 4" (101mm) x D 2.75" (70mm)
6oz, .165kg
Included Accessories
Velcro™ Industrial-Grade
Multi-Mount Plate
Cable Retainers
Qty 1, Includes Two (2) M3 x 4mm Screws
Qty 2
Level Control Knobs Qty 2
Level Control Security Covers Qty 2
Optional Accessories
TSD 24VDC
TSD-RMK
TSD-RMKHR
TSD-RRMK
Power Supply
1 RU 19" Width Rack Mount Panel (Supports 4 TSD Units)
1 RU Half Rack Width Panel (Supports 2 TSD Units)
Rear Rack Mounting Kit
Safety and Certifications
External Power Supply cUL, CE, RoHS, TUV
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800.876.3333 • Fax: 800.765.3435
Specifications are subject to change without notice.
TSD-RL21
2x1 Mic/Line Mixer
Owner’s Manual
Limited Warranty
All products manufactured by AtlasIED 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 AtlasIED 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. AtlasIED 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 AtlasIED 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, ATLASIED 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.
AtlasIED 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 AtlasIED warranty department at 1-877-689-8055, ext. 277 to obtain an RA number.
AtlasIED Tech Support can be reached at 1-800-876-3333 or support.atlasied.com.
Visit our website at www.AtlasIED.com to see other Atlas products.
©2017 Atlas Sound L.P. The Atlas “Circle A”, Soundolier, and Atlas Sound are trademarks of Atlas Sound L.P.
IED is a registered trademark of Innovative Electronic Designs LLC. All Rights Reserved.
All other trademarks are the property of their respective owners. All specs are subject to change without notice. ATS003946 RevB 4/17
AtlasIED.com
1601 Jack McKay Blvd. • Ennis, Texas 75119 U.S.A.
Telephone: 800.876.3333 • Fax: 800.765.3435
– 12 –
Specifications are subject to change without notice.

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Key features
- Selectable balanced mic or line input
- RCA actively summed input
- Remote level control assignable to mixed signal or BGM source
- High gain output for driving long balanced lines
- Compact chassis design
- Multiple mounting configurations
- Removable Phoenix style I/O connectors
- Meets Energy Star™ standards