INTERNAL DIP SWITCH FUNCTIONS (FIGURE 5)

All MX392 and MX393 models have internal DIP switches that allow the user to change the behavior of the microphone

On/Off switch. To gain access to the logic terminals, remove the grille retainer screw, the grille retainer, foam screen, and grille, as shown in Figure 2.

SWITCH BEHAVIOR

LED BEHAVIOR

DIP SWITCH SETTINGS

 

 

 

 

Push to Mute, Release to Talk (As Shipped)

LED on when microphone is active

 

 

 

 

 

 

Push to Talk, Release to Mute

LED on when microphone is active

 

 

 

 

 

 

Toggle: Push On/Push Off

LED on when microphone is active

 

 

 

 

Initially Muted

Initially Active

 

 

 

 

Microphone Always Active (switch avail-

LED Always OFF

 

 

able for logic functions only)

 

 

 

 

 

 

 

NOTE: S4 is available for custom applications. When S4 is in the ON position, pad W4 is connected to pad W5 (see Figure 10).

MX392 LOGIC TERMINAL DEFINITIONS (Figure 6) LOGIC GND Terminal: Connects to the logic ground of an

automatic mixer, switcher, or other equipment. Can be modi- fied to prevent ground loops.

SWITCH OUT Terminal: Provides a TTL logic low when the membrane switch is pressed. This signal is available at all times for all switch settings. The Switch Out function pro- vides a momentary closure when S1 is Off and a latching clo- sure when S1 is On.

LED IN Terminal: Can be modified to remotely control the LED by flipping DIP switch S3 in the microphone to the ON position. As supplied, the LED IN terminal draws 5 Vdc. When this is shorted to the LOGIC GROUND terminal, the LED turns on.

MX392 LOGIC MODIFICATIONS

Open the microphone as shown in Figure 2.

Isolating Logic Ground from Audio Ground

1.Remove jumper R40 from the top of the circuit board.

2.Make sure LOGIC GND terminal connects to the logic ground of the automatic mixer, switcher, or other equip- ment.

Changing SWITCH OUT Terminal to Always Momentary

To accommodate interface equipment requiring momen- tary closure of the microphone (even when the desired mi- crophone function is latching on/off), proceed as follows:

1.Remove R45 from the top of the circuit board.

2.Reinstall R45 at location R46 on the top of the circuit board.

SWITCH BEHAVIOR

USER ACTION REQUIRED

DIP SWITCH SETTINGS

 

 

 

 

Switch Deactivated, Microphone Always

Short LED IN terminal to LOGIC GROUND termi-

 

 

Active

nal

 

 

 

LED Always ON

 

 

 

 

 

 

Automatic Mixer Mode (MX392 models

Connect SWITCH OUT signal to various logic in-

 

 

only)

puts of automatic mixer for custom functions

 

 

 

Connect mixer channel GATE OUT to microphone

 

 

 

LED IN. LED on microphone turns on when its

 

 

 

channel is gated on

Switch out is

Switch toggles

 

 

logic low while

switch out to

 

 

switch is

logic low

 

 

pressed

 

 

 

 

 

3

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Shure MX300 Series Internal DIP Switch Functions Figure, MX392 Logic Modifications, Open the microphone as shown in Figure
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MX300 Series specifications

The Shure MX300 Series represents a significant advancement in professional audio technology, designed specifically for the nuances of theatrical performances, live events, and studio recording. These high-quality microphones are engineered to deliver exceptional sound clarity and reliability, making them an essential tool for audio professionals.

One of the standout features of the MX300 Series is its versatile capsule design. The microphones utilize a proprietary cardioid pattern that effectively isolates the desired sound source while minimizing ambient noise from the surrounding environment. This directional sensitivity makes them ideal for stage use, where managing feedback and unwanted sound is crucial.

The MX300 Series incorporates advanced audio technologies, including integrated pop filters and shock mounts. These features help to reduce plosive sounds and vibrations that can detract from vocal performances. The result is a cleaner, more focused sound with less interference, allowing performers to project their voices confidently.

Durability is another hallmark of the MX300 Series. The microphones are constructed with a robust metal chassis designed to withstand the rigors of touring and frequent use. The rugged design ensures that the MX300 can handle the demands of both outdoor and indoor environments without compromising audio quality.

In addition to its physical durability, the MX300 Series boasts impressive frequency response characteristics. The microphones are engineered to capture a wide range of frequencies, from the rich lows of a deep bass voice to the sparkling highs of a soprano. This broad frequency range allows for a natural and accurate representation of the performer's voice, enhancing the overall listening experience.

The MX300 Series also features an intuitive user interface with convenient controls, making it easy for audio engineers to adjust settings on the fly. This level of user-friendly design ensures that both seasoned professionals and newcomers to the audio field can operate the microphones without extensive training.

In summary, the Shure MX300 Series is a remarkable line of microphones that combines innovative technology, durability, and superior sound quality. Whether for live performances, studio recordings, or broadcast applications, the MX300 Series delivers exceptional audio performance that meets the high standards of audio professionals around the world. With its thoughtful design and robust construction, it stands as a reliable choice for anyone seeking to elevate their sound production capabilities.
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