Shelford Channel
Channel Strip
From Rupert Neve Designs:
The Shelford Channel is built around Rupert Neve’s first new transformer-gain, class-A microphone preamplifier in over 40 years, a “best-of-the-classics” inductor EQ section, a tone-packed diode bridge compressor, the power of variable Silk saturation, a new custom transformer output stage, and twice the operating voltage of vintage designs.
Over fifty years in the making, the Shelford Channel is the definitive evolution of the original technologies in Rupert’s classic console modules like the 1073, 1064 & 2254, thoughtfully advanced and refined for the 21st century studio.
Like Rupert’s designs from his time in Little Shelford , the Shelford Channel’s preamplifier uses a directly-coupled transformer input with gain provided by the custom transformer itself – a first in over 40 years for Rupert Neve. This new custom-designed input transformer, along with its careful integration with the surrounding class-A circuitry, is critical to the Channel’s bold and instantly recognizable character.
Specs
- Mic preamp input impedance
- 2200 Ohm
- Mic preamp maximum input level
- +21.5 dBu from 150Hz to 22kHz; +8 dBu 20Hz to 22kHz
- Mic preamp noise (un-weighted, 22Hz - 22kHz, 150 Ohm balanced source)
- Line Out (Unity Gain) -100.9 dBu; -6dB Out (Unity Gain) -106.6 dBu; Line Out (+30dB Gain) -91.37 dBu; Line Out (+66dB Gain) -64.1 dBu
- Equivalent input noise
- -121.37 dBu
- Mic preamp frequency response
- 17Hz to 45kHz: +/-0.25 dB
- Direct input maximum input level
- +8 dBu from 20 Hz to 120 kHz
- Direct input noise (line out)
- -100 dBu (22Hz to 22kHz)
- Line input maximum input level
- +30.5 dBu from 20Hz to 30kHz
- THD+N
- @ 1 kHz, +20 dBu output level, no load: Better than 0.002%; @ 20 Hz, +20 dBu output level, no load: 0.05% Typical (2nd and 3rd harmonic)
- Noise, main output (un-weighted, 22Hz - 22kHz, 40 Ohm balanced source, no load)
- -101.1 dBu
- Frequency response
- <10 Hz to 110 kHz: +/- 0.25 dB; 120 kHz: +/- 0.32 dB
- Maximum output level
- 16Hz to 20kHz: +26 dBu
- THD+N with Silk Red engaged
- MIN TEXTURE @ 100 Hz, +20 dBu input level, no load: 0.0131%, mostly 3rd harmonic (typical); MAX TEXTURE @ 100 Hz, +20 dBu input level, no load: 1.66%, mostly 2rd harmonic (typical)
- THD+N with Silk Blue engaged
- MIN TEXTURE @ 100Hz, +20 dBu input level, no load: 0.0079%, mostly 3rd harmonic (typical); MAX TEXTURE @ 100Hz, +20 dBu input level, no load: 0.941%, mostly 2rd harmonic (typical)
- High pass filter
- Continuously variable swept frequency from 20 Hz to 250 Hz; Slope: 12 dB/Octave
- EQ noise
- Un-weighted, 22 Hz-22 kHz: -92 dBu
- Signal present
- Illuminates GREEN when input stage signal level reaches -20 dBu
- Overload indicator
- Illuminates RED when input stage signal level reaches -23 dBu
- Compressor noise (BW 22 Hz – 22 kHz)
- 0dB Makeup Gain: -84.5 dBu; +20dB Makeup Gain: -64.2 dBu
- Compressor timing (full range between 1.5
- 1 and 8:1 ratio): FAST – Attack 250 μS - 2 mS // Release 100 mS - 200 mS typical; MF (MEDIUM FAST) – Attack 1 mS - 5 mS // Release 100 mS - 200 mS typical; MED (MEDIUM) – Attack 3 mS - 18 mS // Release 350 mS - 700 mS typical; MS (MEDIUM SLOW) – 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 5m S - 40m S // Release T1 400-900 mS, T2 1-2 S typical
- Dimensions
- 1RU: 19” W x 10.25” D x 1.75” H (48.3 cm W x 26 cm D x 4.5 cm H)
- Weight
- 9.5 lbs. (4.3 kg)
Source: Rupert Neve Designs Shelford Channel product page