The RUPERT NEVE DESIGNS/Shelford Diode Bridge Compressor is a compressor that inherits the spirit of a legendary machine while incorporating modern updates including advanced timing control, extremely low noise, stepped control, high internal drive voltage, and internal parallel processing capabilities.
Since the early 1970s, the early diode bridge compressors designed by Rupert Neve have been highly regarded for bringing punch and cohesion to various instruments, including drums.
However, they also suffered from limitations in terms of control flexibility and versatility.
Therefore, Rupert Neve Designs has inherited the spirit of this legendary machine by implementing modern updates including advanced timing control, extremely low noise, stepped control, high internal drive voltage, and internal parallel processing capabilities.
In 2020, they launched the ""5254 Dual Diode Bridge Compressor"" in the United States.
The Rupert Neve Designs development team completely re-examined the topology of vintage units,
recreating their distinctive tones while improving noise floor and accuracy, extending time constant, adding a full-wave sidechain detector for enhanced dynamic response, and expanding the threshold and ratio control range.
Based on the dynamics circuit developed for the acclaimed Shelford Channel,
featuring custom transformers and a Class A circuit designed by Rupert Neve,
it supports dual-mono or stereo applications.
Delivering a powerful sound tailored to modern demands,
with improved flexibility, it's a dynamics tool for bold expression in virtually any mix, track, and mastering.
○Key Features of the Shelford Diode Bridge Compressor
- Classic Diode Bridge Tone
Delivers the punchy sound that has been used on countless hit records for over 50 years.
- Advanced Timing Control
Integrated timing control allows for customization of the compression envelope.
Offers a wider range of response compared to vintage units and clone models.
- Custom Transformer and Class A Line Amplifier
Vintage warmth meets the improved headroom and precision of a Rupert Neve-designed transformer-coupled line stage.
- 31-Position Click-Fit Knob
Allows for precise and quick setting recall and adjustment.
- Parallel Compression Function
Internal blend control allows for more dramatic compression settings.
- Full-wave sidechain detection
An updated version of vintage units' half-wave detection,
provides extremely high-precision sidechain signal detection.
- Stereo linking
Allows for dual-mono or stereo compressor operation.
- Internal universal power supply
A universal power supply compatible with 90-240V is built into the 1U rack-size chassis, allowing for use anywhere in the world.
○Shelford Diode Bridge Compressor Main Specifications
【XLR Line Input - XLR Line Output (Compressor Bypass)】
*Source Output Impedance = 40 Ω Balanced
? Input Impedance: 10 kΩ
? Output Impedance: 40 Ω
? Maximum Input Level (+4dBu): +26.7 dBu typical
? Maximum Output Level: +26.7 dBu typical
? Noise (22 Hz - 22 kHz): -104 dBu typical
? Frequency Response (10 Hz - 120 kHz): ± 0.25 dB typical
? Total Harmonic Distortion @ 1 kHz, Maximum Level (22 Hz - 22 kHz): 0.0008% typical
【Compressor Noise】
? Noise @ Makeup Gain 0 dB (22 Hz - 22 kHz): -84.5 dBFS typical
* Noise @ Makeup Gain +20 dB (22 Hz to 22 kHz): -64.5 dBFS
typical
[Compressor Timing]
*Values ??represent the full range available for ratio settings 1.5:1 to 8:1 and “FAST” mode.
* FAST - Attack (250 us - 2 ms) / Release (100 ms - 200 ms) typical
* MF - Attack (1 ms - 5 ms) / Release (100 ms - 200 ms) typical
* MED - Attack (3 ms - 18 ms) / Release (350 ms - 700 ms) typical
* MS - Attack (5 ms - 40 ms) / Release (600 ms - 1 s) typical
* SLOW - Attack (10 ms - 80 ms) / Release (800 ms - 1.5 s) typical
* AUTO - Attack (5 ms - 40 ms) / Release (T1: 400 ms - 900 ms / T2: 1 s - 2 s) s) Typical
[Input/Output Terminals]
* Line Input: 2 x XLR (LEFT/RIGHT transformer-coupled, balanced)
* Line Output: 2 x XLR (LEFT/RIGHT transformer-coupled, balanced, with ground lift switch)
* Sidechain Input/Output: 4 x TRS (Send and return to each LEFT/RIGHT channel)
[Other]
* Power Supply: 100V-240VAC / 45W
* Dimensions: 209 x 483 x 82.5 mm (H x W x D) *Excluding protrusions
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