Maselec MPL-2 Peak and High Frequency Limiter

Maselec MPL-2 Peak and High Frequency Limiter

The Maselec MPL-2 is a brick-wall and high frequency limiter. It can be used to achieve high subjective levels and reduce unwanted high frequency levels (de-essing). The MPL-2 is also used to ‘smooth’ and give digital recordings a more ‘analogue’ character.

The Maselec MPL-2 Peak and High Frequency Limiter is housed in a 1U 19″ rack mount alloy case. A minimum of controls is used due to automatic time constants and optimisation techniques for the gain reduction. The advantage is not only simple operation but also increased performance for highly dynamic and inconsistent materials without the need for continuous readjustments.
The input gain does not reduce the wide dynamic range of the limiter. It can be used at its maximum setting with no increased risk of distortion. This eliminates the need for excessive levels, which could cause clipping in equipment feeding the input of the limiter. A further benefit is that the maximum peak output level (set with the threshold) is independent of different gain settings.
High Frequency Limiting is primarily intended for use as a de-esser, reducing unattractive high frequencies. Part of the high frequency limiter circuit is also used to reduce distortion from the wideband limiter.

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• Input dynamic Range: Better than 120dB (balanced)
• Output dynamic range: 100dB to 120dB (depending on gain and threshold settings)
• Maximum input level: +29dBu (balanced)
• Maximum output level: +29dBu (balanced)
• Distortion: Typically less than 0.003%
• Limiter attack time: Instant
• HF limiter attack time: Programme dependent 1msec to 20 msec
• Release time: Programme dependent
• Input impedance: 100kW ground floating electronically balanced
• Output impedance: 33W electronically balanced
• Threshold: +14dBu to +22dBu
• H.F. Threshold: 0dB to 26dB below limiter threshold
• Gain: 0dB to 10dB
• H.F. Limiter: >2kHz
• Power: 90-130, 180-260 Volts @ 50-60 Hz
• Fuse: 315mA, anti surge (slow)