2.Choose the number of the desired controller slider or knob, using the number key group (1 - 16), then press the Enter key.The display will show a “P” in anticipation of the “parameter” number.

3.Assign the desired MIDI controller parameter number, using the number key group (1-127), then press Enter. (See the chart displayed in “Appendix A” fo this manual for a list of controller numbers.) The display will show a “C” in anticipation of the MIDI “channel” number.

4.Assign the MIDI channel number, using the number key group (1-16), then press Enter. This channel assignment will apply only to the controller knob that you are programming.

Finally, press the MIDI/SELECT key one more time, to finish assigning values to the controller sliders and knobs. You can program 15 sets of controls to the sliders and knobs and then switch between them using “presets” (see the paragraph titled “Presets:,” contained within the following section).

Other Buttons and Keys

RESET Key: Pressing the MIDI/SELECT button, the RESET key, and then the Enter key will send out a message to send an “All Notes Off” message and return all external MIDI instruments to their default setting. This can be useful if notes on a synthesizer become “stuck” on. Press the MIDI/SELECT button again to return to the previous state.

“Flat” & “Sharp” Keys: By pressing the MIDI/SELECT button in combination with the flat and sharp keys, you can shift the active keyboard pitch higher or lower, one note (half-step) for each key press. For example, if you want to lower the pitch by 2 notes (two half-steps or a whole step), press the MIDI/SELECT button then the “flat” key twice. Press the MIDI/SELECT button to finish the change.

Octave Keys: To change the Radium’s octave range, press the OCTAVE UP or OCTAVE DOWN button, according to your preference.The octave shift range available includes a maximum increment of plus or minus three octaves and the display will read “-3”,“-2”,“-1”,“0” (for default),“1”,“2” or “3”, corresponding to the setting currently selected.

MIDI CHANNEL Key: By pressing the MIDI/SELECT button, then pressing the MIDI CHANNEL key, you select your keyboard’s transmitting MIDI channel.The default channel will be 1 when the Radium’s power is first turned on.To change this setting (for example, to set MIDI channel to Channel 2), do the following:

1.Press the MIDI/SELECT button.

2.Press the MIDI CHANNEL key.

3.Press the “2” key, then the Enter key. Lastly, press the MIDI/SELECT button one more time (this will change the MIDI transmit channel from 1 to 2.)

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M-Audio RAD-050503 warranty Press the MIDI/SELECT button Press the Midi Channel key
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RAD-050503 specifications

The M-Audio RAD-050503 is a powerful audio interface designed for musicians, producers, and sound engineers seeking high-quality recording and playback capabilities. This device is particularly notable for its versatility and high-performance features, making it an excellent choice for both home studios and professional environments.

One of the standout characteristics of the RAD-050503 is its exceptional audio quality, offering high-resolution audio capture at sample rates up to 192 kHz. This level of fidelity ensures that recordings are true to the original sound, preserving the nuances and subtleties of each instrument or voice. The device supports both 24-bit and 32-bit audio formats, providing flexibility for various recording requirements.

Equipped with multiple input options, the RAD-050503 includes XLR/TRS combo jacks that cater to microphones, guitars, and line-level sources. This flexibility makes it easy to connect different recording instruments without needing additional interfaces. The device also features phantom power, enabling the use of condenser microphones, which are essential for capturing high-quality vocal tracks.

For monitoring, the RAD-050503 provides high-output headphone outputs and balanced TRS main outputs. This ensures that users can achieve accurate sound representation during recording sessions, allowing for real-time monitoring without latency issues. The built-in zero-latency monitoring feature further enhances the recording experience by allowing musicians to hear their inputs directly through their headphones without delay.

In terms of connectivity, the RAD-050503 is USB-powered, providing a straightforward plug-and-play setup with minimal fuss. It is compatible with both Mac and Windows operating systems, making it accessible for a wide range of users. The interface is also equipped with MIDI I/O ports, allowing for seamless integration with MIDI devices, synthesizers, and controllers.

The rugged, compact design of the RAD-050503 makes it highly portable, making it suitable for musicians on the go. Users can easily transport it to live gigs or collaborate in different studio environments. The unit's thoughtful layout, featuring easy-to-use knobs and indicators, allows for intuitive operation, catering to both novice and experienced users alike.

In summary, the M-Audio RAD-050503 audio interface combines top-notch audio performance, versatile connectivity options, and user-friendly design, making it an excellent choice for anyone serious about recording and producing high-quality music.
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