PRELIMINARY

Switcher Software, cont’d

6.

In the loudness dialog box, adjust the fader until the value in the “SPL”

 

readout box matches the reading on the SPL meter.

NCalibration can be performed with the output channel volume set to any comfortable listening level, but a relatively loud volume that can be easily measured is preferred.

 

Loudness is now calibrated.

7.

Release the loudness processor’s bypass to hear the compensation.

Alternate method:

NThis method works if 90 dB is an acceptable amplifier/volume limit for the room.

1.

Set the loudness dialog box’s Loudness Compensation slider to its default

 

(center) position and the output channel volume fader to 0 dB (100% volume).

2.

Adjust the amplifier until the SPL meter reads 90 dB. Loudness is now

 

calibrated.

Setting loudness “by ear”

When setting loudness by ear, it is also essential that the system gain structure be set up first.

1.

Open the post-matrix loudness processor dialog box.

2.

Bypass the loudness processor.

3.

Place the meter in an average listening location.

4.

Set the output volume fader to a relatively quiet listening level. (Filter

 

compensation from the loudness processor is most prominent at low listening

 

levels. Set to the levels described earlier.)

5.

Set the loudness dialog box’s Loudness Compensation slider to its default

 

(center) position.

6.

Release the loudness processor’s bypass to hear the compensation.

NYou should hear a moderate enhancement to the program material with more accentuated bass frequencies (below 500 Hz) and more brightness in the high frequencies that carry harmonic content (above 7 kHz). You can toggle the loudness bypass on and off to compare the difference between loudness off and on.

7.

To experiment with less loudness compensation, move the Loudness

 

Compensation slider to the left, toward Less.

 

For more loudness compensation, move the slider to the right, toward More.

8.

Any adjustment you make to the Loudness Compensation slider carries

 

through to all listening levels. Set the DSP Configurator output volume to a

 

relatively loud listening level.

9.

Toggle the loudness bypass on and off to compare the difference between

 

loudness off and on. At a loud listening level, this difference should be

 

minimal, or barely perceivable.

5-40 MPX Plus 866 A Media Presentation Matrix Switcher • Switcher Software

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Extron electronic MPX Plus 866 A manual Alternate method, Setting loudness by ear
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MPX Plus 866 A specifications

The Extron MPX Plus 866 A is a powerful multimedia presentation switcher designed to meet the needs of modern AV environments. This advanced device simplifies the management of multiple audio and video sources, providing seamless control and connectivity in various settings such as conference rooms, classrooms, and auditoriums.

One of the key features of the MPX Plus 866 A is its ability to handle a wide range of video formats. It supports both HDMI and analog video, allowing for compatibility with different devices. This versatility ensures users can connect laptops, projectors, and other AV equipment without any issues, making it ideal for mixed-use environments where various technologies coexist.

With an 8x8 matrix design, the MPX Plus 866 A can route up to eight different input sources to eight output destinations. This feature enables users to select and switch between sources quickly and efficiently, enhancing the overall presentation experience. Additionally, the device incorporates Extron's high-performance scaling technology, which ensures that video signals are processed with exceptional clarity and detail, regardless of resolution.

Another noteworthy characteristic of the MPX Plus 866 A is its built-in audio capabilities. The switcher includes a comprehensive audio mixer with support for both analog and digital audio signals. This allows users to integrate and control audio sources effectively, ensuring that sound quality matches the visual experience. Furthermore, it features advanced audio processing tools, including equalization and filtering functions, to enhance audio output in any environment.

The MPX Plus 866 A also emphasizes ease of use and accessibility. Its user-friendly interface, combined with an intuitive control system, allows operators to navigate the device with minimal training. Additionally, the switcher supports various control options, including RS-232 and Ethernet, enabling integration into larger AV control systems for centralized management.

In summary, the Extron MPX Plus 866 A stands out as a versatile and reliable multimedia presentation switcher. Its extensive range of input and output options, advanced scaling and audio processing technologies, and emphasis on user-friendly design make it an exceptional choice for any professional AV installation. Whether in an educational setting or corporate environment, the MPX Plus 866 A ensures seamless connectivity and high-quality performance, meeting the demands of today’s multimedia presentations.
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