AEV Mirage MPX Broadcast A/V audio processor

A BROADCAST FANTASY REALIZED

The mirage of perfect sound has escaped the radio since its first days. But now the fantasy has been made real and given the radio's mastery of the sound it creates? at a cost it can afford.

MIRAGE FM is the result of this dream come true? the embodiment of the wishes of a broadcaster.

Differentiated audio levels are adjusted and fused with extreme care.

The sound heard by the listener is perfect, unique, fully calibrated and constantly under control.

Brilliant and full sound, maximum and constant modulation. 

The result of AEV's technical know-how.  Robust and compact, it is designed to embody excellence and convenience.

AEV MIRAGE MPX

TOTAL CONTROL OF MODULATION

In FM transmission, the signal sent to the transmitter must under no circumstances exceed a deviation of 75 KHz. High level peaks, normally of short duration, do not carry sound energy and produce overmodulation. To limit these peaks, single-band limiters act over the entire audio spectrum and generally attenuate the sound. Mirage FM divides the signal into 3 frequency bands and controls them separately, acting only on the band where the peaks are present. This is done without compromising sound density and maintaining full and consistent modulation.

EXCITING SOUND

Mirage FM's adjustable functions allow you to process the audio signal and adapt it immediately to the needs of the broadcaster. This allows Mirage FM to produce deep, powerful bass, bright midrange and clean, crisp highs. The speaker's voice will be enhanced and the intelligibility of incoming calls will be greatly improved.

The sound of your radio station will become warm and enveloping or aggressive and exciting, exactly how you want it to sound? with full modulation, constantly monitored and distortion-free.

DIGITAL STEREO ENCODER

The standard digital stereo encoder mounted on the Mirage FM MPX demonstrates how advanced an audio processing system can be. In addition to providing superb stereo separation between channels, it provides maximum levels of modulation and total control of spurious peaks generated by the low pass filter and preamp networks in external encoders.

Specification:

Frequency response: 30 Hz ÷ 15 KHz ± 0.3 dB (By-pass)

AGC control: ± 10 dB

Stop Band Rejection: > 90 dB above 75 KHz

Noise: Output noise depends on processing parameters; AGC, threshold, gain and density Above 84 dB Din Audio (By-pass).

Total Distortion at 1 KHz: Less than 0.05%.

Crosstalk L / RR / L: Greater than 60 dB Din Audio (90 dB at 3 KHz).

AUDIO INPUT:  

Configuration: Left and right

Impedance: 10 K? electronically balanced

Input level: ? 20 ÷ +10 dBm

Common mode rejection: Greater than 50 dB, (30 ÷ 15,000 Hz)

Connector: XLR female

AUDIO OUTPUT:  

Configuration: Left and right, flat, pre-emphasized or deenphased (50 or 75 mS).

Impedance: 100? electronically balanced

Connector: XLR male

STEREO ENCODER (*):  

Configuration: 1 Output with level control

Pilot frequency: 19 KHz ± 0.001% max above temp.

Pilot injection: 4 ÷ 12% adjustable

1 KHz Distortion: Less than 0.005%

Signal-to-noise ratio: Greater than 92 dB DIN AUDIO

Stereo separation: Greater than 60 dB 30 ÷ 15 KHz (70 dB at 1 KHz)

Crosstalk from main to secondary: Greater than 45 dB 30 ÷ 15 KHz (75 dB at 1 KHz)

Crosstalk Sub to Main: Greater than 40 dB 30 ÷ 15 KHz (75 dB at 1 KHz)

Subcarrier suppression at 38 KHz: Greater than 80 dB

76 KHz and sideband suppression: Greater than 90 dB

Composite output level: 0 ÷ + 12 dBm

Impedance: 50?

Connector: Floating BNC

Maximum cable length: 10 mt. RG58 A / U

Pilot reference output: 1 Vpp square wave

Impedance: 600?

Connector: BNC floating on the frame

SCA input: -14 ÷ + 6 dBm for a 10% modulation of the main carrier

Input impedance: 10 K?

Connector: BNC floating on the frame

RDS level: -24 ÷ 0 dBm for ± 2 KHz of main carrier

Input impedance: 10 K?

Connector: BNC floating on the frame

GENERAL DATI:  

Power supply: 87 ÷ 265 VAC 50-60 Hz

Power consumption: 8 VA

Dimensions: (19 x 9.4 x 1.7 cm) 48.3 x 24.0 x 4.4 cm 1 rack unit

Weight: 8.4 pounds (3.8 kg)

Working temperature: 0 ÷ 50 ° C