mPress™ Using & Applications

The following is a quick look at how you would use the Radial mPress in common situations. Complete details about the many features built into the Radial mPress and information on connecting it to your system can be found in the user guide.
(PDF download).

Making Connections

Before making connections, ensure all level controls are turned down to zero (fully counter-clockwise), all switches are set in the out position and PA system speakers turned off. This prevents power turn-on transients from damaging more sensitive components such as tweeters. Plug the mPress power supply in. There is no power switch. Once connected, the mPress will spring to life. To verify power is being received, depress the MIC-1 ON switch to illuminate the LED.

Connect your first microphone to the MIC-1 Input. You can use the front panel XLR or the one on the rear panel. Do not use front and rear inputs at once. They are simply wired in parallel for convenience. If phantom power is needed, activate the 48V power switch using a small screwdriver. This switch is recessed to avoid accidentally engaging or disengaging phantom power. Connect a pair of headphones to the mPress and set the headphone level control half-way (12 o'clock) to start. Slowly increase the MIC-1 Input level until you see the input meter LED illuminate. Test the level for maximum input by speaking loudly until the RED LED illuminates. Then back down the level for extra headroom. Adjust the headphone level as you go along to suit.

MIC-2 input can be used independently on a second source in a conference or town-hall meeting arrangement. In this case, connect using the same method as outlined above. When both mic inputs are engaged, they are summed after the limiter section to a mono output that will be present at each of the GALLERY OUTPUTS, the MAIN OUTPUTS, and in the HEADPHONES.

Once your mic levels are set, engage the MAIN OUT ON switch to activate the outputs to the PA system and slowly raise the MAIN OUT LEVEL control until the desired output level is achieved.

Adding stereo from another source

The PROGRAM section of the mPress is equipped with a number of unbalanced line level inputs for connecting and distributing additional audio sources. This allows you to connect the output of a mixing console for larger setups when more than two microphones are required. You can also use these inputs to connect a device for music playback to feed background music through powered loudspeakers while the audience waits. On the front panel there are 3.5mm and RCA program inputs, while the back panel has ¼" and RCA inputs. Only one set of inputs should be used as these are all parallel connections. When the PROGRAM ON switch is depressed, these inputs are activated and sent to the GALLERY OUTPUTS, MAIN OUTPUTS, and the HEADPHONES. When using powered loudspeakers, ensure that your MAIN OUT is turned on and set to an appropriate level before turning up the PROGRAM LEVEL.

Connecting the Gallery Outputs

The mPress is equipped with eight dual level XLR outputs to distribute your signal to a number of recording devices without any loss in sonic clarity. Each of these outputs is a mono sum of the engaged MIC INPUTS 1 and 2, along with any active PROGRAM inputs. The first two GALLERY OUTPUTS are on the front of the mPress for convenience, while the remaining six can be found on the rear panel. Recessed switches next to each output allow the user to set the signal levels to HIGH or LOW, allowing a variety of line or mic level devices to be connected.

When connecting a mic level device, push IN the recessed switch to set to LOW output. When connecting a line level recorder or an Exo-Pod module, disengage the recessed switch for HIGH output.

The mPress ships with two XLR barrel adapters with -30dB pads to take the line level outputs of a mixing console down to mic level, allowing you to use the balanced XLR mic inputs.

Test tone

The mPress also features a 1kHz signal generator that sends a test tone to each of the GALLERY OUTPUTS. This allows each recording device to be simultaneously calibrated with the mPress for optimal recording level. Push IN the TEST switch to activate the test tone.


Using the mPress


Basic 8 Out System

In this setup, you are using the mPress to feed up to eight recording devices in a press gallery. Ensure that the recessed switches on the GALLERY OUTPUTS are set correctly for each device (LOW for mic level recorders, HIGH for line level devices). Once connected, activate the 1kHz test tone so that each recorder can be calibrated to the output of the mPress. Now test using the microphone to ensure that the signal is clean.

Distributing more than two mic signals

When you have a panel of speakers, you can use the mPress to distribute the outputs of a mixing console via the PROGRAM INPUTS. In this configuration, you can also connect backup microphones through the mPress MIC INPUTS which will keep running even if the mixing console goes down or loses power.

Star Configuration with Exo-Pods

In this setup, you are connecting each Exo-Pod to one of the mPress gallery outputs using a standard XLR mic cable. This lets you feed up to 14 press members using one Exo-Pod in one particular zone. Set the level control on the Exo-Pod to fully clockwise (maximum output level) and then reduce the level if it's too hot. As many as eight zones may be set up in this manner, creating what is commonly known as a star network configuration.

Series configuration with Exo-Pods

Here, you are now connecting one Exo-Pod into another with the LOOP THRU output, creating a series configuration also known as a daisy-chain. As detailed below, set the gallery outputs to high and then connect from the mPress gallery out to the first Exo-Pod. From the Exo-Pod LOOP THRU connection, add a second Exo-Pod using a mic cable. You can connect as many as four Exo-Pods in series from each mPress gallery output. Any combination of the star and series configurations can be used.