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Rupert Neve Designs 517

1-channel, 500-series-format Microphone Preamplifier and Opto Compressor

Rupert Neve Designs 517

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Product Description for the Rupert Neve Designs 517

Based on the Portico 5017 Mobile Pre, the 517 provides world-class transformer-coupled micpreamp, compressor and DI circuitry, with Vari-phase, Silk and DI/mic blending capabilities in a 500 series model. As the first 500 series module designed by Mr. Rupert Neve, the 517 incorporates outstanding sonic quality with an indispensable feature set.

Mic Pre and Instrument Amplifier

The 517′s mic pre includes 66dB gain, and is based on the Portico 5017 design. The mic pre also incorporates a polarity reverse switch and phantom power. The separate instrument amplifier includes 30dB of gain, a ground lift, variable phase and an instrument Thru connection.

Blended Use

Used as a single channel device for instruments, the 517 can be used to phase align, combine and compress direct and amplified signals. To achieve this, use the DI for the instrument’s direct signal and the mic preamp for the speaker cabinet signal. The blend control is used for mixing direct and amplified signals to achieve the desired tonal blend between the two sources, and the variphase is used to minimize or extenuate phase cancellations between the two signals. To compress the blended signal, the internal compressor jumper must be set to the blend path (this is the default setting). This technique could also be used to create a single, mixed output of a guitar and vocals.

The Compressor

Based around a new LDR (light dependent resister) design, the 517′s opto-coupler compressor has been simplified to a single threshold control with auto make up gain. By default, the compressor is set to a fixed 2:1 ratio with fixed attack and release. To set the compressor, simply dial the threshold control down until the desired amount of compression is achieved. An LED light indicates when the compressor is active.

Vari-Phase

In addition to the standard polarity reverse, the 517′s vari-phase control may be used to adjust phase incrementally. This control is useful any time two signals derived from the same source are combined.

For instance, even with careful placement, the combination of close miced drums and overheads, can often yield hollow sounding results. By using the variable phase adjust, the direct signal can be phase rotated until the signals are naturally aligned.

This technique is also extremely useful when combined with the internal blend control on instruments. A bassist, using both direct and miced signals can blend the two into a single output, using the vari-phase to reach an optimal alignment. By adjusting the phase in the 517, the musician or engineer can find the absolute best mic position without regard to the phase relation to the direct signal.

Features

  • 500 series format for compatibility with API and other 500 series racks
  • Microphone preamplifier with 0-66dB of gain with switchable 48V phantom power and phase reverse
  • Direct instrument input with 0-30dB of gain (balanced or unbalanced operation)
  • Blend control allows you to blend the mic pre and the DI signal together
  • Vari-phase continuously adjusts the phase of the direct signal only
  • Silk function for enhanced sound
  • Opto compressor section with contiguously variable threshold control (2:1 ratio, attack, and release are fixed)
  • LEDs for signal presence, clipping, and compression indicators
  • Frequency Response: Main Output, no load, -0.2dB at 10Hz -3dB at 160kHz
  • Noise: Measured at Main Output, unweighted, 22Hz-22kHz, Terminated 150 Ohms. With gain at unity better than -100dBu With gain at 66dB better than -62 dBu Equivalent Input Noise better than -128dBu Noise Factor 1.5dB
  • Maximum Output Level: Maximum output from 20Hz-40kHz is +23 dBu
  • Total Harmonic Distortion + Noise: at 1kHz, +20 dBu output: Main Output: Better than 0.001% at 20Hz, +20 dBu output: Main Output: Better than 0.002% Silk Engaged: Better than 0.2% Second harmonic
  • Crosstalk: Measured channel to channel: Better than -90dB at 15kHz
  • Phantom Power: +48 Volts DC +/-1%
SKU RND-517
Brand Rupert Neve Designs
Weight 5.0000
Dimensions (WxHxD) No

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