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 4.4 MA-i Limiter Panel

Figure 4.4 Panneau du limiteur MA-i

4.4 Limiters

See Figure 4.4. This panel provides the Peak Voltage Limiter and Average Power Limiter.

Peak Voltage Limiter

This limits the peak voltage output of the amplifier. Four param- eters control this limiter for each channel:

Enabled: Enables or disables this function.

Threshold: Sets the level, in absolute voltage, which the limiter will allow from the amplifier. The range is from 12 Vpk to 255 Vpk.

Attack Time: Sets the attack time of the limiter. The attack time is defined as the time it takes the limiter to attenuate the output signal by 20 dB. The range is from 1 millisecond to 100 milliseconds.

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

Amp Output Meter: Indicates the output level of the amplifier.

RMS Power Limiter

This limits the long-term output power of the amplifier. Four parameters control this limiter for each channel:

Enabled: Enables or disables this function.

Threshold: Sets the average power level, in watts, which the limiter will allow from the amplifier channel. The range is from 10 watts to 10,000 watts. This level should be set to the connected loudspeaker’s long-term power rating. Also you must enter the loudspeaker’s nominal impedance.

Attack Time: Sets the attack time of the limiter. The attack time is defined as the time it takes the limiter to attenuate the output signal by 20 dB. The range is from 1 second to 30 seconds.

Release Time: Sets the release time of the compressor. The release time is defined as the time it takes the limiter to increase the output signal by 20 dB. The range is from 1 second to 30 seconds.

Nominal Impedance: Sets the nominal impedance of the load and increases performance.

Gain Reduction Meter: Indicates the number of dB that the gain is reduced by the limiting function.

Compressor Link (not shown) connects the compres- sors 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.

4.4 Limiteurs

Reportez-vous à la Figure 4,4. Ce panneau affiche le Limiteur de tension de crête et le Limiteur de puissance moyenne

Limiteur de tension de crête

Cela limite la sortie de la tension de crête de l’amplificateur. Quatre paramètres commandent ce limiteur pour chaque canal :

Activé : Active ou désactive cette fonction.

Seuil : Règle, en tension absolue, le niveau de l’amplificateur le plus élevé autorisé par l’amplificateur. Les valeurs sont comprises entre 12 Vpk et 255 Vpk.

Temps de désensibilisation : Règle le temps de désensibilisation du limiteur. Le temps de désensibilisation se définit comme le temps nécessaire au limiteur pour atténuer le gain du signal de 20dB. Les valeurs sont comprises entre 1 milliseconde et 100 millisecondes

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

Appareil de mesure de sortie de l’amplificateur :

Indique le niveau de sortie de l’amplificateur.

Limiteur de puissance RMS

Cela limite la puissance de sortie à long terme de l’amplificateur. Quatre paramètres commandent ce limiteur pour chaque canal :

Activé : Active ou désactive cette fonction.

Seuil : Règle, en watts, le niveau de puissance moyen du limiteur le plus élevé, autorisé par l’amplificateur. Les valeurs sont comprises entre 10 watts et 10 000 watts. Ce niveau doit être réglé selon la puissance nominale à long terme de l’enceinte connectée. Vous devez également entrer l’impédance nominale de l’enceinte.

Temps de désensibilisation : Règle le temps de désensibilisation du limiteur. Le temps de désensibilisation se définit comme le temps nécessaire au limiteur pour atténuer le gain du signal de 20dB. Les valeurs sont comprises entre 1 seconde et 30 secondes

Temps de libération : Règle le temps de libéralisation du compresseur. Le temps de désensibilisation se définit comme le temps nécessaire au limiteur pour augmenter le signal de sortie de 20dB. Les valeurs sont comprises entre 1 seconde et 30 secondes.

Impédance nominale : Règle l’impédance nominale de la charge et améliore les performances.

Appareil de mesure de la réduction du gain : Indique le nombre de dB correspondant à la réduction du gain par la fonction du limiteur.

Operation Manual Mode d’emploi Bedienungsanleitung Manual de Operación

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Harman MA9000i, MA12000i Limiters, Peak Voltage Limiter, RMS Power Limiter, Limiteurs, Limiteur de tension de crête
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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.
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