Rupert Neve Designs 5035 The Shelford Channel

Mic Pre + Inductor EQ + Compressor

A Whole New Vintage.

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 dual-tap transformer output stage, and twice the operating voltage of vintage designs.

The Input Stage and Transformer Gain Mic Pre

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.

Conveniently, the Direct Input uses the same topology as the best-selling RNDI Active Transformer Direct Interface, providing astonishing clarity for high-Z instrument signals, with unparalleled low-frequency response and an incredibly smooth high end.

SPECIFICATIONS:

MIC PREAMP

INPUT IMPEDANCE
2200 Ohm

MAXIMUM INPUT LEVEL
+21.5 dBu from 150Hz to 22kHz
+8 dBu 20Hz to 22kHz

NOISE
Un-weighted, 22Hz - 22kHz, source impedance 150 Ohm balanced.
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

FREQUENCY RESPONSE
17Hz to 45kHz: +/-0.25 dB

DIRECT INPUT

MAXIMUM INPUT LEVEL
+8 dBu from 20 Hz to 120 kHz

NOISE (LINE OUT)
-100 dBu (22Hz to 22kHz)

LINE INPUT

MAXIMUM INPUT LEVEL
+30.5 dBu from 20Hz to 30kHz

TOTAL HARMONIC DISTORTION AND NOISE
@ 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, source impedance 40 Ohm balanced, 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

TOTAL HARMONIC DISTORTION AND NOISE WITH SILK ENGAGED

SILK RED
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)

SILK BLUE
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

DIODE BRIDGE COMPRESSOR SECTION

COMPRESSOR NOISE (BW 22 Hz – 22 kHz)
0dB Makeup Gain: -84.5 dBu
+20dB Makeup Gain: -64.2 dBu

COMPRESSOR TIMING CONSTANT MEASUREMENTS
Note: TIMING measurements represent the full range between 1.5:1 and 8:1 ratio and FAST mode
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

PRODUCT DIMENSIONS
19” (48.3 cm) x 10.5” (26.7 cm) x 1.75” (4.5 cm)

SHIPPING DIMENSIONS
24” (61 cm) x 13” (33 cm) x 4” (10.2 cm)

SHIPPING WEIGHT
12.25 lbs. (5.5 kg)