Rupert Neve Designs Portico II Master Buss Processor

Rupert Neve Designs Portico II Master Buss Processor

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Based around the high voltage, discrete and class-A signal paths made famous in the 5088 Mixer and the Portico II Channel, the Portico II Master Buss Processor is a creative tool that redefines the boundaries and limitations of traditional 2-channel compression and limiting. Though originally developed for mastering applications, the MBP has quickly become a favorite of mix engineers, tracking engineers, and even FOH engineers. From mixing bass-heavy EDM to a delicate master of a chamber ensemble, it has something to offer everyone – no matter the use or genre.
With input and output transformers designed and implemented by Mr. Rupert Neve, the high-voltage 72V topology found in the Master Buss Processor will integrate flawlessly with virtually any system. Additionally, the MBP incorporates mastering-grade detented pots throughout to fine-tune its revolutionary dynamics, tone, and stereo field controls. This new topology is a significant evolution of Mr Rupert Neve’s classic designs with appreciable benefits to headroom, dynamic range, distortion, noise, slew rate, bandwidth, and accuracy while still providing the sweet, musical performance that has been a part of countless recordings.

Rupert Neve Designs Portico II Master Buss Processor Features:

  • Compression
    For signals below the “threshold” level that has been set, a compressor provides a linear path allowing signals to be amplified without the gain being adjusted in any way. When signals exceed the “threshold” level, the gain is reduced in a controlled manner that depends on the Ratio that has been set.
  • Gain
    GAIN range provided is from 0dB to +20 dB. When compression has taken place, the gain control is necessary to increase the overall gain to restore the program level.
  • Limiter
    Musically transparent brick-wall limiting activated when the signal reaches the limiter threshold. Attack time is .03 mS in order to reduce the first half of a 20 kHz waveform over the threshold, with Serial Adaptive Release.
  • Bypass All
    Hardwire bypass for MBP, including the input and output transformers
  • Texture
    Continuously variable control for Silk and Silk+ modes allows the engineer to fine tune the harmonic ratio and tonality of each channel
  • FF/FB
    Changes the VCA Detection from a forward feed design (fast, more accurate attack & release) to a feed back design (smoother, more musical response)
  • Peak / RMS Compression Selection
    When engaged, the MBP compressor uses a combination of peak and RMS (average) detection to trigger the VCA set below 1ms. When disengaged, it follows RMS alone.
  • SC HPF
    Introduces a HPF at 250Hz to the VCA side chain signal. This allows the compressor to disregard sustained low frequency content.
  • Ratio
    Range from 1:1 to LIMIT (i.e. 40:1)
  • Threshold
    Range from -30dBu to +20dBU
  • Attack Time
    Range from 20 mS to 75 mS.
  • Release / Recovery Time
    Range of RELEASE time is 100 mS to 2.5 Seconds.
  • Stereo Operation
    When the LINK switch is engaged, channel A becomes the master control, and any gain reduction happens simultaneously in both channels
  • LED Meters
    Four Peak LED METERS are provided that show stereo output levels and gain reduction.
    Output level meter covers the range from -10 to +22 dBu and above which is regarded as overload.
    The reduction is calibrated in dB covering the range 1 to 22 dBu, reading from top to bottom
  • Side Chain Send/Return
    External compressor side chain send and return on 2 x TRS jacks. The send is always active and normalled to the return (NOTE: If the send and return are connected to a patchbay, the send should be normalled or connected to the return by default, as the compressor will not trigger if the return has no signal)

Rupert Neve Designs Portico II Master Buss Processor Specifications:

  • Frequency Response:
    Main Output, no load,
    –3 dB @ 4 Hz
    –3 dB @ 120 kHz
  • Maximum Output Level:
    Maximum output from 20 Hz to 40 kHz is +24.5 dBu.
  • Total Harmonic Distortion and Noise:
    @ 1kHz, +20 dBu output: Better than 0.006%
    @ 20Hz, +20 dBu output: Better than 0.20%
    As above, Silk Blue Engaged, Texture fully CW: Better than 2.5%
    As above, Silk Red Engaged, Texture fully CW: Better than 3.5%
    @ 20kHz, +20 dBu output: Better than 0.020%
  • Slew rate
    Better than 4 V/uS
  • Compressor
    Threshold: Variable from -30dBu to +20dBu
    Ratio: Variable from 1.1:1 to 40:1 (LIMIT)
    Blend: Variable from 0% to 100% Compressor
    Gain: Variable from -6 dB to +20 dB
    Attack: Variable from 20 mS to 75 mS (0.1mS with “FAST”)
    Release: Variable from 100mS to 2.2 Seconds
  • Power Consumption
    .65A @ 117 VAC, .35A @ 220 VAC
  • Fuse
    5mm x 20mm, 2.5 Amp, fast acting, ceramic body – Bussman type GDA 2.5A or equivalent
  • Size
    3.5”H (2U), 19”W, 12”D
  • Shipping Size
    5”H (2U), 23”W, 12”D
  • Shipping Weight
    20 lbs

Collections: Analog Mixers, Mega Discount, Over ₹50,000, Rupert Neve Designs


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