Owner’s Manual
TSD-MIX31RL
3x1 Mic/Line Mixer
TSD-MIX31
3x1 Mic/Line Mixer with Priority Mute & Remote Level
TSD-MIX31RL
3x1 Mic/Line Mixer
Owner’s Manual
Description
The versatile Atlas Sound TSD-MIX31RL 3x1 mic/line mixer is ideal for applications where paging, public address, and BGM music are required. Use alone or in conjunction with amplifiers in meeting rooms, stadiums, gymnasiums, and other applications requiring versatile, multi source mix control.
The unit includes two mic/balanced line inputs via removable Phoenix style connectors and a stereo summing dual RCA input. Switchable phantom power is provided for both mic inputs to facilitate condenser microphones. The high quality, low noise internal mic preamps ensure clarity and quiet operation without unwanted coloration. A 12dB/octave high pass filter @ 125Hz also is available on each input to minimize bass rumble and low frequency feedback.
Priority paging can be accomplished via contact closure or VOX trigger on Input 1 (mutes input 3 only).
Remote level control feature allows use of the Atlas Sound AAVC-10K (or equivalent) decorative wall plate control for convenient remote adjustment of either the entire mix bus or input 3 only (typical BGM input). A variable output limiter provides system protection by reducing clipping and distortion - which is especially useful when mixing multiple mics and/or line sources with varying volumes.
The TSD-MIX41 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. The TSDs are highly efficient and meet Energy Star™ standards as one 24V DC power supply (available separately) can power multiple Time Saving Devices.
Features
Switchable 24V Phantom Power
One (1) Unbalanced Summing Line Input
Vox Sense and Contact Closure Priority
Mute of Ch3
• Variable Output Limiter
• Remote Level Control
• 12dB/Octave Low Cut Filter @ 125Hz
• Input Signal & Peak Indicator LEDs
• High Gain Output for Driving Long
Balanced Lines
• Separate Ground Connections
• Removable Phoenix Style I/O Connectors
• Security Covers
• Cable Management System
• Multiple Mounting Configurations
• Meets Energy Star™ Standards
• Compact Chassis Design
Audio Applications
• Mixer
• Mic Preamp
• Line Preamp
• Stereo Summing Preamp
• Line Drive
• Remote Level Control
• Priority Paging
Installation
• Churches
• Restaurants
• Sports Bars
• Schools
• Industrial Facilities
• House of Worship
Owner’s Manual
Front Panel Description
7
TSD-MIX31RL
3x1 Mic/Line Mixer
7
7
6
4
5
3
7
1 2
1. Inputs Level Controls 1 and 2 - Independently adjust the gain of the input 1 and 2 input signals.
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. Input Level Conrol 3 - Adjusts the gain of the input level of the input 3 stereo RCA inputs. 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.
3. Power LED - Illuminates Blue when 24VDC is present.
4. 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.
5. Signal LED - Illuminates Green when the input signal strength reaches 25mV to verify a signal path.
Note: The LED will not illuminate if the input level is turned Off.
6. Limiter LED - Adjustment of the Limiter feature should be done after the input gain(s) have been
properly set. Each Input should be adjusted so the Input Peak LED flashes on signal peaks and
then the Output Limiter control can be set so this LED flashes to indicate that the limiter circuit is
active.
7. 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 firmly tightening
the screws.
TSD-MIX31RL
3x1 Mic/Line Mixer
Owner’s Manual
Rear Panel Description
9
4
5
6
7
9
3
9 9
1 2 8
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 low power consumption, a
single external power supply may power more than one TSD. Refer to the current requirements in
milliamps to match with the appropriate power supply. Note: It is acceptable to exceed the current
of the TSDs but NOT safe to use a power supply that is below the current requirement of the device.
2. Balanced Inputs 1 and 2 - Connects to balanced line or mic level sources. For gain or source input
type selection, refer to the “Dip Switch Function Identification” chart. Note: Unbalanced line inputs
can be inserted with proper wire configuration by connecting the (G) and (-) terminals together.
3. Unbalanced Input 3 - Electronically sums unbalanced audio signals through stereo RCA
connectors. Level control is on the front panel . Input 3 can be muted via contact closure or an
audio signal on Input 1 for priority paging applications.
4. Input 3 Remote Mute - Connect a dry contact closure across these two terminals to mute Input 3
when the switch is closed. Dip Switch 7 must be in the On position.
5. Remote Level - For remote gain control, connect the Atlas Sound AAVC-10K (or equal) wall plate to
this terminals. Set Dip Switch 8 to control a mixed signal or Input 3 signal only.
6. Balanced Line Output - Provides output for connection to balanced mic/ line level devices. Note:
Unbalanced line level devices can be used with proper wire configuration by connecting the (G)
and (-) terminals together.
7. Output Limiter Control - Sets peak output levels by increasing or decreasing the sensitivity.
The Limiter LED on the front panel indicates when limiter is in use. Note: The control knob can be
replaced with a supplied security cover to prevent unauthorized adjustment.
8. Vox Sense - Adjusts the sensitivity of the Mute circuit for priority pages. Set Dip Switch 8 to
control a mixed signal or Input 3 signal only.
9. Cable Management Retainer Points - Use rear panel screws to secure included cable
management retainers.
Owner’s Manual
Dip Switch Function Identification
TSD-MIX31RL
3x1 Mic/Line Mixer
Switch Position
• DIP
corresponding input terminal. Down position is On.
• DIP SW # 3 - Input Mic or Line Select for input gain selection for Input 1. Up position is Line,
down position is Microphone.
• DIP SW # 4 - Low Cut Filter engages at 125Hz with a roll off rate of 12dB per octave. This filter
operates either in the Line or Mic mode and is available on Input 1. Ideal for vocal microphones
to reduce low frequency energy and to increase intelligibility. Down position is On.
• DIP SW # 5 - Input Mic or Line Select for input gain selection for Input 2. Up position is Line,
down position is Microphone.
• DIP SW # 6 - Low Cut Filter engages at 125Hz with a roll off rate of 12dB per octave. This filter
operates either in the Line or Mic mode and is available on Input 2. Ideal for vocal microphones
to reduce low frequency energy and to increase intelligibility. Down position is On.
• DIP SW # 7 - Input 3 Mute Receive will mute audio present at Input 3 when audio is present at
Input 1. Down position is On.
• DIP SW # 8 - Remote Level sets whether the remote volume control adjusts all inputs mixed or
Input 3 only. Up position is all inputs, down position is Input 3 only.
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 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 panel supports up to four TSDs in a 1RU space.
TSD-MIX31RL
3x1 Mic/Line Mixer
Owner’s Manual
Block Diagram
1
INPUT 1 INPUT 2
PHANTOM
2
OFF
ON
OFF
ON
1 2 3 4 5 6 7 8
DIP SWITCH FUNCTION SET
3
INPUT 1
LINE
MIC
4
INPUT 1
MIC
LOW CUT
OFF
ON
5
INPUT 2
LINE
MIC
6
INPUT 2
MIC
LOW CUT
OFF
ON
7
INPUT 3
MUTE RCV
OFF
ON
8
REMOTE
LEVEL
INPUT 3
MIXED
LIMITER
VOX MUTE SENS
LEVEL
LIMITER
MUTE
MIC/LINE
REMOTE LEVEL
+
–
G
OUTPUT
INPUT 1
+
–
G
INPUT 1
LEVEL
LOW CUT
125Hz 12dB
SIGNAL LED PEAK LED
REMOTE LEVEL
INPUT 3/MIXED
MIC/LINE
LOW CUT
125Hz 12dB
DC 24V
INPUT 2
+
–
G
24V
INPUT 2
LEVEL
RCA INPUT
INPUT 3
R
L
MUTE
POWER SHOW
LED
INPUT 3
LEVEL
Specifications
Description
Chassis Color
Chassis Material
3 x 1 Mic/Line Mixer
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 2, Balanced Mic or Line Selectable
Removable 3 Position Captive Screw 3.5mm Spacing
Impedance 1.2KΩ Balanced, 600Ω Unbalanced
Phantom
Low Cut Filter
Line Input Level
Mic Input Level
24VDC Defeatable
125Hz/12dB Defeatable
1V (0dBV) Balanced = 2V (+6dBV) Balanced Output,
Maximum Input 6V (6dBV)
46dB Gain, 10mV (-40dB) Balanced = 2V (+6dBV) Balanced Output,
Maximum Input 40mV (-27dBV)
Outputs
Type
Connection
Qty 1, Balanced Line
Removable 3 Position Captive Screw 3.5mm Spacing
Owner’s Manual
TSD-MIX31RL
3x1 Mic/Line Mixer
Impedance 300Ω Balanced, 150Ω Unbalanced
Line Output Level 1V (0dBV) In = 2V (+6dBV), Maximum Output 6V (15dBV)
Controls
Input Level Control
Output Level Control
Mute Input 3
VOX Mute Sens
Output Limiter
Remote Level
Dip Switch Function
Qty 3, Removable Knobs with Security Covers
Qty 1, Removable Knob with Security Cover
Contact Closure, Removable 2 Position Captive Screw
3.5mm Spacing
Trim Adjust for Mic Sensitivity
Threshold Adjust
Control Port 10K External Pot, Removable 2 Position Captive Screw
3.5mm Spacing
• Phantom Power 24VDC, Input 1 & 2
• Input 1 & 2, Mic/Line Select
• Input 1 & 2, 125Hz/12dB High Pass Filter
• Input 3, Mute Receive
• Remote Level Assign, Mix or Input 3
Indicators
Input Signal
Input Peak
Limiter
Green, 25mV On Threshold
Red, -3dB Before Clip
Red, Limiter Activation
Power Blue
Electrical
Frequency Response
THD
Signal to Noise
Output Limiter
Mounting
Velcro™
Brackets
TSD-RMK
Cable Retainer
20Hz - 20kHz (±1dB)
.06% & 1kHz
Line to Line: 85dBV
Mic to Line: 78dBV
Threshold Adjust 50mV Mimimum Output to No Limit
Industrial Grade, Included
Qty 2, Included
Optional 1 RU Rack Mount Panel (Supports 4 TSD Units)
Qty 2, Included
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
Accessories
TSD 24VDC Power Supplies
TSD-RMK 1 RU Rack Panel
Safety and Certifications
External Power Supply cUL, CE, RoHS, TUV
TSD-MIX31RL
3x1 Mic/Line Mixer
Owner’s Manual
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. ATS003941 RevA 9/10
