ST-MX2 RADIO DESIGN LABS, ST-MX2 Datasheet

ST-MX2

Manufacturer Part Number

ST-MX2

Description

RDL UNIVERSAL AUDIO MIXER, POWER REQUIREMENTS: 24-33 VDC, 60 MA, APPLICATIONS: MIXING OF TWO AUDIO SOURCES. CONVERTS MONO LINE LEVEL SIGNALS FROM CONSUMER TO PROFESSIONAL, OR FROM PROFESSIONAL TO CONSUMER FORMAT

Manufacturer

RADIO DESIGN LABS

Datasheet

1.ST-MX2.pdf (2 pages)

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STICK-ON

SERIES

Model ST-MX2

Universal Audio Mixer

ANYWHERE YOU NEED...

• Two Channel Audio Mixing

• Mixer with Selectable Mic or Line Level Inputs

• Mixer with Simultaneous Mic and Line Outputs

• To Add Additional Inputs to an Existing Mixer

• Audio Output Level Metering

• Balanced or Unbalanced Inputs and Outputs

• Low Noise and Low Distortion Performance

You Need The ST-MX2!

The ST-MX2 is part of the group of versatile STICK-ON products from Radio Design Labs. STICK-ONs feature the

advanced circuitry for which RDL products are known, combined with unequalled versatility in mounting possibilities.

The durable adhesives provided with the ST-MX2 permit permanent or removable mounting. Numerous available

mounting accessories, brackets, rack-mount and tabletop chassis are optionally available to facilitate any system.

FUNCTIONAL DESCRIPTION: The ST-MX2 is a two channel audio mixer. Each input channel is identical. Pin

jumpers adjacent to each audio input permit the installer to set that input for either mic or line level. The mic input

accepts low impedance balanced microphones (150 Ω nominal) or high impedance unbalanced microphones

(5-kΩ-nominal). The line inputs are 20 kΩ bridging and accept either unbalanced or balanced audio signals. A

single-turn trimmer is provided for each input channel. The usual range of mic or line level signals may be adjusted

to produce +4dBu at the line level output. The dual LED audio meter provides accurate dynamic level adjustment

without an external meter. A separate mic level output is also provided.

The dual LED output meter follows standard VU ballistics. A green LED illuminates at 15 dB below +4 dBu. The

intensity of the green LED progresses from minimum at -11 dBu to full intensity at +4 dBu. The adjacent red LED

illuminates at +4 dBu. The audio may be adjusted for maximum intensity of the green LED. Flashing of the red LED

is equivalent to a VU meter needle swinging above the 0 level.

Unbalanced audio inputs are converted in the module to balanced. Mic level inputs are preamplified to line level.

Either input may be turned down if it is not used. The combination of input levels, individual input adjustments and

output levels makes the ST-MX2 suited to a wide variety of mixing, summing, preamplification and audio format

conversion applications.

TYPICAL APPLICATION: The ST-MX2 is used in any application requiring mixing of two audio sources. A mic may

be mixed with a line level music source. Two mics may be mixed to feed the mic or line level input of a power

amplifier in a meeting room or choir loft. A mic or professional +4 dBu line level mono sum is possible from stereo

CD players, cassette decks, computer sound cards, televisions, and a wide variety of other unbalanced sources. If a

single input channel is used, the ST-MX2 may be used to convert mono line level signals from consumer to

professional, or from professional to consumer format. It may also be used as a microphone preamplifier, or

conversely to adapt unbalanced or balanced line level signals into the microphone input of other equipment.

The audio clarity, low noise, low distortion and versatility make this module ideally suited to a wide variety of

demanding audio applications. Use this module in conjunction with other RDL modules as part of a high quality,

flexible audio/video system.

•

RDL

659 N. 6

St.

Prescott, AZ., USA 86301

(928) 443-9391

FAX (928) 443-9392

www.rdlnet.com

Related parts for ST-MX2

ST-MX2 Summary of contents

Page 1

... A mic or professional +4 dBu line level mono sum is possible from stereo CD players, cassette decks, computer sound cards, televisions, and a wide variety of other unbalanced sources single input channel is used, the ST-MX2 may be used to convert mono line level signals from consumer to professional, or from professional to consumer format. It may also be used as a microphone preamplifier, or conversely to adapt unbalanced or balanced line level signals into the microphone input of other equipment ...

Page 2

... BALANCED FOR LINE-LEVEL LINE-LEVEL BALANCED SOURCE SOURCE GAIN PWR A INPUT A MIC OUT A INPUT A MIC THE ST-MPA2 AND ST-MX2 MAY OPERATE FROM THE SAME POWER SUPPLY SUPPLY WIRING Headroom: Mic Input: Line Input: Output: Noise: Mic: Line: CMRR: Mic: Line: Power Requirement: ...

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