MA-i Series Power Amplifiers Amplificateurs de puissance

Leistungsendstufen Amplificadores de potencia

 

 

 

4 Software Control

4 Contrôle par programme

4Software-Steuerung

4Control del software

Figure 4.3 MA-i Input Compressor Panel

Figure 4.3 Panneau du compresseur d’entrée MA-i

4.3 Input Compressor

See Figure 4.3. An input signal compressor/limiter is avail- able for each channel. Five parameters control this feature:

Enable: Enables or disables this function.

Threshold: Sets the level, in dBu, above which the compressor begins to attenuate the input signal. This level corresponds to the input level meter reading. The compressor is “feed-forward,” meaning that the level detection point is located before the gain control stage. The range is from 0 dBu to –60 dBu.

Ratio: Sets the compression ratio of the compressor. The ratio is the relation between the amount of attenuation applied by the compressor verses the amount that the input signal is over the threshold. The available settings are 2:1 to 32:1.

Attack Time: Sets the attack time of the compressor. The attack time is defined as the time it takes the compressor

to attenuate the signal gain by 20 dB. The range is from 1 millisecond to 0.1 second.

Release Time: Sets the release time of the compressor. The release time is defined as the time it takes the compres- sor to increase the signal gain by 20 dB. The range is from 10 milliseconds to 10 seconds.

Slow-Med-Fast:Click one of these buttons to set default values quickly.

Gain Reduction: This meter shows the number of dB that the gain is reduced during compression.

In addition to these controls for each channel, a single-control Compressor Link (not shown) connects the compressors together. The compressors are tied at their sense points, meaning that the greater of the two input signals will be used as stimulus for both compressors. Each compressor will still compress based on its individual threshold, attack, release and ratio settings. This feature is unavailable through the Amp Info.

4.3 Compresseur d’entrée

Reportez-vous à la Figure 4,3. Un compresseur/limiteur de signal d’entrée est disponible pour chaque canal. Cette fonction est commandée par cinq paramètres :

Activer : Active ou désactive cette fonction.

Seuil : Règle le niveau, en dBu, au-dessus duquel le compresseur commence à atténuer le signal d’entrée. Ce niveau correspond à la valeur de l’appareil de mesure du niveau d’entrée. Le compresseur est « couplé vers l’avant », ce qui signifie que le point de détection du niveau est situé avant l’étage de commande du gain. La gamme est comprise entre 0 dBu et –60 dBu.

Taux : Règle le taux de compression du compresseur. Le taux est le rapport entre la valeur de l’atténuation appliquée par le compresseur et la valeur à partir de laquelle le signal d’entrée est supérieur au seuil. Les réglages disponibles sont inclus entre 2:1 et 32:1.

Temps de désensibilisation : Règle le temps de désensibilisation du compresseur. Le temps de désensibilisation se définit comme le temps nécessaire

au compresseur pour atténuer le gain du signal de 20dB. Les valeurs sont comprises entre 1 milliseconde et 0,1 seconde.

Temps de libération : Règle le temps de libéralisation du compresseur. Le temps de libéralisation se définit comme le temps nécessaire au compresseur pour augmenter le gain du signal de 20dB. Les valeurs sont comprises entre 10 millisecondes et 10 secondes.

Slow-Med-Fast (lent-moyen-rapide) : Cliquez sur l’un des boutons suivants pour définir rapidement les valeurs par défaut.

Réduction du gain : Cet appareil de mesure affiche le nombre de dB correspondant à la réduction du gain pendant la compression.

En outre de ces commandes pour chaque canal, une attache de compresseur à une entrée (non illustrée) connecte les compresseurs entre eux. Les compresseurs sont reliés à leurs points de détection, ce qui signifie que le plus important des deux signaux d’entrée sera utilisé comme stimulus pour les deux compresseurs. Chaque compresseur sera toujours comprimé en fonction de son seuil individuel et des paramètres de sensibilisation, de libéralisation et de taux. Cette fonction est ajoutée au logiciel.

Operation Manual Mode d’emploi Bedienungsanleitung Manual de Operación

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Harman MA12000i, MA9000i, MA5000i Input Compressor, Enable Enables or disables this function, Compresseur d’entrée

MA12000i, MA9000i, MA5000i specifications

The Harman MA5000i, MA9000i, and MA12000i are part of Harman's premium line of integrated amplifiers, designed to deliver high-fidelity audio reproduction with cutting-edge technology and features. Each model integrates aspects of engineering excellence to provide an immersive listening experience that caters to audiophiles and casual listeners alike.

The Harman MA5000i serves as an elegant entry point into the series, packing a punch with 50 watts per channel into 8 ohms and 80 watts into 4 ohms. This amplifier provides a clean, powerful sound with low distortion levels, ensuring that the audio remains faithful to the original recording. The MA5000i features seamless connectivity options including Bluetooth, USB, and analog inputs, allowing users to easily integrate various audio sources. Harman's proprietary audio technology is evident in the dynamic range and clarity that this model can reproduce, making it an excellent choice for small to medium-sized listening environments.

Stepping up, the MA9000i elevates the audio performance further with 100 watts per channel into 8 ohms and 150 watts into 4 ohms. This model is equipped with advanced technologies such as Harman's unique Adaptive Signal Processing, which optimizes sound based on listener preferences and room acoustics. The MA9000i also incorporates a high-resolution digital-to-analog converter (DAC) that enhances playback quality from digital sources. With its extended frequency response and substantial power, this amplifier is adept at driving a wider range of speakers, making it suitable for larger spaces.

At the pinnacle of this series, the Harman MA12000i delivers an astonishing 200 watts per channel into 8 ohms and 300 watts into 4 ohms, tailored for the most demanding audio setups. This amplifier showcases Harman’s latest advancements in audio engineering, including a state-of-the-art power supply and efficient cooling technology that maintains performance even under heavy loads. The MA12000i is built with premium components, ensuring reliability and longevity. Its versatility in connectivity includes multiple digital inputs, analog inputs, and streaming capabilities, making it the ideal hub for a modern home audio system.

Each of these amplifiers embodies Harman’s commitment to innovation and quality sound, providing users with a range of options to suit any audio preference or environment. From the compact but powerful MA5000i to the high-end MA12000i, these amplifiers promise to deliver an exceptional audio experience, elevating the standard for home entertainment systems.