Instruction Manual for rupert neve models including: Shelford Channel, Transformer Gain Mic Preamp, Gain Mic Preamp, Mic Preamp, Preamp

Operations Manual

Rupert Neve Design Shelford Channel – KMR Audio


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775-00027 5035-Manual RevC4 ?v=12762036804759846015
Shelford Channel
Transformer Gain Mic Preamp, Inductor EQ, Diode Bridge Compressor & SILK
Operations Manual

Important Safety Instructions

1. Read these instructions.

20. NOTE: This equipment has been tested and found to comply with the

2. Keep these instructions.

limits for a Class B digital device, pursuant to part 15 of the FCC Rules.

3. Heed all warnings.

These limits are designed to provide reasonable protection against

4. Follow all instructions.

harmful interference in a residential installation. This equipment

5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.

generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
· Reorient or relocate the receiving antenna. · Increase the separation between the equipment and the
receiver. · Connect the equipment into an outlet on a circuit different from
that to which the receiver is connected. · Consult the dealer or an experienced radio/TV technician for
help.

11. Only use attachments/accessories specified by the manufacturer.

CAUTION: Changes or modifications to this device not expressly

12. Use only with a cart, stand, tripod, bracket, or PORTABLE CART

approved by Rupert Neve Designs LLC, could void the user's authority to

table specified by the manufacturer, or sold with WARNING

operate the equipment under FCC rules.

the apparatus. When a cart is used, use caution

21. This apparatus does not exceed the Class A/Class B (whichever is

when moving the cart/apparatus combination to

applicable) limits for radio noise emissions from digital apparatus as

avoid injury from tip-over.

set out in the radio interference regulations of the Canadian Department

13. Unplug this apparatus during lightning storms or

of Communications.

when unused for long periods of time.

ATTENTION -- Le présent appareil numérique n'émet pas de bruits

14. Refer all servicing to qualified service personnel. Servicing is required radioélectriques dépassant las limites applicables aux appareils

when the apparatus has been damaged in any way, such as power- numériques de class A/de class B (selon le cas) prescrites dans le

supply cord or plug is damaged, liquid has been spilled or objects have réglement sur le brouillage radioélectrique édicté par les ministere des

fallen into the apparatus, the apparatus has been exposed to rain or communications du Canada.

moisture, does not operate normally, or has been dropped.

22. Exposure to extremely high noise levels may cause permanent hearing

15. This apparatus shall not be exposed to dripping or splashing, and no loss. Individuals vary considerably in susceptibility to noise-induced

object filled with liquids, such as vases or beer glasses, shall be placed hearing loss, but nearly everyone will lose some hearing if exposed to

on the apparatus.

sufficiently intense noise for a period of time. The U.S. Government's

16. Do not overload wall outlets and extension cords as this can result in a risk of fire or electric shock.

Occupational Safety and Health Administration (OSHA) has specified the permissible noise level exposures shown in the following chart.

17. This apparatus has been designed with Class-I construction and must be connected to a mains socket outlet with a protective earthing connection (the third grounding prong).
18. This apparatus has been equipped with a rocker-style AC mains power switch. This switch is located on the rear panel and should remain readily accessible to the user.
19. The MAINS plug or an appliance coupler is used as the disconnect device, so the disconnect device shall remain readily operable.

According to OSHA, any exposure in excess of these permissible limits could result in some hearing loss. To ensure against potentially dangerous exposure to high sound pressure levels, it is recommended that all persons exposed to equipment capable of producing high sound pressure levels use hearing protectors while the equipment is in operation. Ear plugs or protectors in the ear canals or over the ears must be worn when operating the equipment in order to prevent permanent hearing loss if exposure is in excess of the limits set forth here:

CAUTION AVIS

RISK OF ELECTRIC SHOCK. DO NOT OPEN RISQUE DE CHOC ELECTRIQUE. NE PAS OUVRIR
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER (OR BACK) NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL
ATTENTION: POUR EVITER LES RISQUES DE CHOC ELECTRIQUE, NE PAS ENLEVER LE COUVERCLE. AUCUN ENTRETIEN DE PIECES INTERIEURES PAR L'USAGER. CONFIER L'ENTRETIEN AU PERSONNEL QUALIFIE.
AVIS: POUR EVITER LES RISQUES D'INCENDIE OU D'ELECTROCUTION, N'EXPOSEZ PAS CET ARTICLE A LA PLUIE OU A L'HUMIDITE
The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure, that may be of sufficient magnitude to constitute a risk of electric shock to persons. Le symbole éclair avec point de flèche à l'intérieur d'un triangle équilatéral est utilisé pour alerter l'utilisateur de la présence à l'intérieur du coffret de "voltage dangereux" non isolé d'ampleur suffisante pour constituer un risque d'éléctrocution.
The exclamation point within an equilateral triangle is intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. Le point d'exclamation à l'intérieur d'un triangle équilatéral est employé pour alerter les utilisateurs de la présence d'instructions importantes pour le fonctionnement et l'entretien (service) dans le livret d'instruction accompagnant l'appareil.

Duration, per day in hours 8 6 4 3 2
1.5 1
0.5
0.25 or less

Sound Level dBA, Slow Response
90 92 95 97 100
102 105
110
115

Typical Example
Duo in small club Subway Train Typical music via head phones Siren at 10 m distance Loudest parts at a rock concert

This symbol indicates that this product must not be disposed of with other waste. Instead, it is your responsibility to dispose of your waste equipment by handing it over to a designated collection point for the recycling of waste electrical and electronic equipment. The separate collection and recycling of your waste equipment at the time of disposal will help conserve natural resources and ensure that it is recycled in a manner that protects human health and the environment. For more information about where you can drop off your waste equipment for recycling, please contact your local city recycling office or the dealer from whom you purchased the product.

WARNING -- To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.

Table of Contents
Introduction 1 Block Diagram 1 Shelford Front Panel 2 Shelford Rear Panel 4 Shelford Features 5 Specifications 9 Limited Warranty 21

Rupert Neve Designs Shelford Channel
Thank you for purchasing the Rupert Neve Designs Shelford Channel. We hope you enjoy using this product as much as we have enjoyed designing and building it. The Shelford Channel features Rupert Neve's first new tranformer-gain, Class-A Mic Pre in over 40 years, a thoughtfully refined classic 3-band inductor EQ, an updated Diode Bridge Compressor and custom Rupert Neve Designs transformer coupled outputs with variable SILK. The Shelford Channel maintains the soul of Rupert's classics with new levels of versatility, delivering the distilled essence of over fifty years of Rupert Neve's most treasured designs.
1

Shelford Channel Block Diagram

Shelford Channel Front Panel

SIGNAL LED that illuminates GREEN when signal is present and
RED when near clip point
MIC/DI/LINE Push-button switch that selects the Mic/DI input
or line input
THRU Passive loop 1/4" out of the DI input signal

TRIM Continuously variable +/- 6dB level control

LOW FREQ 4-position rotary switch that selects the corner (shelf) or center (peak)
frequency

HPF Push-button switch that engages the variable high pass filter

EQ IN
Push-button switch that engages the inductor EQ section

MID HI Q Push-button switch that reduces the Q width when pressed in
MID FREQ 6-position rotary switch that selects the center (peak) frequency
8K/16K Push-button switch that adjusts the corner (shelf) or center frequency (peak) of HF band

SHELFORD
CHANNEL

0dB

THRU

MIC / DI

SIGNAL

LINE

30 36 42

24

48

-6 TRIM+6

18

54

12

60

DI

GND LIFT

6 0dB 66

48V

MIC GAIN

HPF 100 20Hz 250Hz HPF FREQ

EQ IN 0

100 220 60 35
LOW FREQ

MID HI Q 900 1K8

8K

400

3K5

220

7K5 16K

0

0

MID FREQ

-15 +15 LF

LF PEAK

-15 +15 MID

HF PEAK

-15 +15 HF

3: 2:1
1.5:1
-2

-18

+12

-25 +20

DI 1/4" jack for direct injection
(DI) or instrument inputs
GND LIFT Push-button switch that separates the DI audio signal ground from chassis ground
MIC GAIN 12 position rotary switch that
controls the microphone preamp gain in 6dB steps
48V Push-button switch
that engages 48V Phantom Power

LF 31-detent potentiometer that controls the amount
of boost or cut within a range of +/- 15dB

HPF FREQ 31-detent potentiometer that adjusts the cutoff frequency for the high pass filter within a range of 20Hz to 250Hz

POLARITY Push-button switch that inverts the phase of the input signal

LF PEAK Push-button switch that toggles between shelf mode (out) or
peak mode (in)

HF 31-detent potentiometer that controls the amount of boost or cut within a range of +/- 15dB
HF PEAK Push-button switch that selects between shelf mode (out) or peak mode (in)
MID 31-detent potentiometer that controls the amount of boost or cut within a range of +/- 15dB

2

Shelford Channel Front Panel (continued)

TIMING 6-position rotary switch that adjusts the
compressor attack and release times
HPF to S/C Illuminated push-button switch that engages
the compressor side-chain high pass filter
RATIO 6-position rotary switch that adjusts the compressor ratio from 1.5:1 to 8:1
COMP IN Push-button switch that engages the compressor
section

PRE EQ Push-button switch that puts the compressor before the EQ when engaged
FAST Illuminated push-button switch that speeds up all compressor time constants by 30%

VU METER Illuminated VU meter displays output level or gain reduction
PEAK Peak LED warns when signal levels are peaking 3dB below clip point

VU SELECT Push-button switch that toggles between metering the compressor output level (OUTPUT) and gain reduction (REDUCTION)

900 1K8

0

3K5

7K5

0

-15 +15

COMP IN

3:1 4:1 HPF to S/C MED MS

PRE EQ

2:1

6:1

MF

SLOW

1.5:1

8:1

FAST

AUTO

-2

+6

50

RATIO

TIMING

-18

+12

0

S/C

LINK

-25 +20 INSERT -6 +20

THRESHOLD

GAIN dB

0

100

BLEND %

FAST

VU SELECT

OUTPUT REDUCTION
RED / BLUE
SILK MIN MAX TEXTURE

VVUU
Illuminated meter/power indicator
RUPERT NEVE DESIGNS

PEAK

THRESHOLD 31-detent potentiometer that controls the compressor threshold range from +20dBu to -25dBu
S/C INSERT Push-button switch that engages the S/C Insert SEND & RETURN jacks on the rear panel for external side-chain processing
GAIN 31-detent potentiometer that
controls the compressor make-up gain within a range
of -6dB to +20dB

TEXTURE 31-detent potentiometer that controls the amount of SILK harmonics when SILK is engaged
SILK IN Push-button switch that toggles through the three available SILK modes: OFF, RED & BLUE
BLEND 31-detent potentiometer that controls the wet/dry mix of the compressed signal (100%) and the input signal (0%)
LINK Push-button switch that engages stereo compressor link mode

3

Shelford Channel Rear Panel

POWER IEC standard 3-pin AC Power outlet
100-240VAC 35 Watts Max

CAUTION Risk of Electric Shock Disconnect from outlet before removing cover

POWER
100-240 VAC 50/60Hz 35 Watts

Rupert Neve Designs, LLC Model 5035

MADE IN USA

LINK TS Jacks that allow multiple Shelford channel side-chain signals to be linked
together for stereo compression

SIDE CHAIN SEND Compressor side-chain insert send TS jack for connecting to the input
of an external processor (ex: EQ)

LINE OUT -6dB LINE OUT
LIFT GND

SIDE CHAIN

LINK

SEND

RETURN

COMPRESSOR

MIC IN Balanced XLR input that can be
utilized for MIC level signals

LINE IN

MIC IN

GROUND LIFT Slide switch that lifts the internal audio
ground from chassis ground to minimize ground loops
LINE OUT Main line output using a custom Rupert Neve Designs transformer

SIDE CHAIN RETURN Compressor side-chain insert return TS jack for connecting to the output of an external processor (ex: EQ)
-6dB OUT -6dB balanced XLR output using a custom Rupert Neve Designs transformer

LINE IN Balanced XLR input that can be utilized for LINE level signals

4

Shelford Channel Front Panel Features
THRU
Passive loop 1/4" output of the DI input signal.
DI
1/4" jack for direct injection (DI) or instrument inputs.
MIC/DI/LINE
Push-button switch that selects the Mic/DI input or line input.
GND LIFT
Push-button switch that separates the DI audio signal ground from chassis ground.
SIGNAL
LED that illuminates GREEN when signal is present and RED when near clip point.
MIC GAIN
12-position rotary switch that controls the microphone preamp gain in 6dB steps.
TRIM
31-detent potentiometer that allows the user to adjust the preamp gain within a range of +/- 6dB.
48V
Push-button switch that illuminates RED when +48V Phantom Power is engaged.
Ø (Polarity)
Push-button switch that illuminates AMBER when engaged and inverts the phase of the input signal.
HPF
Push-button switch that illuminates GREEN when the variable high pass filter is engaged.
FREQ
31-detent potentiometer that allows the user to adjust the cutoff frequency of the variable high pass filter within a range of 20 Hz to 250 Hz.
EQ IN
Push-button switch that illuminates GREEN when the inductor EQ section is engaged.
LF
31-detent potentiometer that controls the amount of boost or cut for the low frequency band within a range of +/15dB.
5

Shelford Channel Front Panel Features (continued)
LOW FREQ
4-position rotary switch that selects the corner (shelf) or center (peak) frequency of the low frequency band.
LF PEAK
Push-button switch that toggles between shelf mode (OUT) or peak mode (IN) of the low frequency band.
MID HI Q
Push-button switch that reduces the Q width of the mid frequency band when pressed in.
MID
31-detent potentiometer that controls the amount of boost or cut for the mid frequency band within a range of +/- 15dB.
MID FREQ
6-position rotary switch that selects the center (peak) frequency of the mid frequency band.
8K/16K
Push-button switch that selects between the two available high frequency shelf/peak frequencies: 8kHz (OUT) and 16kHz (IN).
HF
31-detent potentiometer that controls the amount of boost or cut for the high frequency band within a range of +/- 15dB.
COMP IN
Push-button switch that illuminates GREEN when the diode bridge compressor section is engaged.
THRESHOLD
31-detent potentiometer that controls the compressor threshold range from +20dBu to -25dBu.
RATIO
6-position rotary switch that adjusts the compressor ratio from 1.5:1 to 8:1.
S/C INSERT
Push-button switch that engages the side-chain insert SEND & RETURN jacks on the rear panel for external sidechain processing (ex: EQ).
HPF TO S/C
Push-button switch that illuminates GREEN when the compressor side-chain high pass filter is engaged.
NOTE: The GREEN `HPF' switch will turn off when the HPF to S/C switch is engaged
6

Shelford Channel Front Panel Features (continued)
GAIN
31-detent potentiometer that controls the compressor make-up gain within a range of -6dB to +20dB.
TIMING
6-position rotary switch that adjusts the compressor attack and release times. ** Please refer to the `Time Constant Specifications' section on page 10 for specific attack and release times..**
LINK
Push-button switch that engages stereo compressor link mode.
PRE EQ
Push-button switch that routes the compressor section ahead of the EQ section when engaged.
BLEND %
31-detent potentiometer that controls the wet/dry mix of the compressed signal (wet) to the input signal (dry).
FAST
Illuminated push-button switch that speeds up all time constants by 30%.
VU SELECT
Push-button switch that toggles between metering the output level (OUTPUT) and compressor gain reduction (REDUCTION).
SILK IN
Illuminated push-button switch that toggles through the three available SILK modes: OFF, RED, and BLUE. RED enhances harmonic content in high mid and high frequencies. BLUE enhances harmonic content in low and low mid frequencies.
TEXTURE
31-detent potentiometer that controls the amount of SILK harmonics added within the transformer output stage when SILK is engaged.
PEAK
PEAK LED warns when signal levels are peaking 3dB below clip point.
7

Shelford Channel Rear Panel Features
POWER
IEC AC power inlet with integrated power switch. 100-240VAC at 50/60Hz. 35 Watts maximum AC power consumption.
GROUND LIFT
Slide switch that lifts the internal audio ground from chassis ground on the MAIN OUT and the -6dB OUT to help isolate from ground interference.
LINE OUT
Balanced XLR output utilizing a custom Rupert Neve Designs transformer.
-6dB OUT
Balanced XLR output utilizing the center tap of a custom Rupert Neve Designs transformer.
SIDE CHAIN SEND
Compressor side-chain insert SEND 1/4" TS jack for connecting to the input of an external processor (ex: EQ).
SIDE CHAIN RETURN
Compressor side-chain insert RETURN 1/4" TS jack for connecting to the output of an external processor (ex: EQ).
LINK
1/4" TS jacks that allow for two Shelford Channel compressors to be linked together for stereo compressor operation. ONLY INTENDED FOR USE WITH OTHER SHELFORD CHANNEL LINK JACKS.
LINE IN
Balanced XLR input that can be utilized for LINE level signals.
MIC IN
Balanced XLR input that can be utilized for MIC level signals.
8

Specifications
Note: All measurements typical, all measurements recorded using 25ft. XLR output cables

MIC PREAMP

Input Impedance

2200 ohms

Maximum Input Level

+21.5 dBu from 150Hz to 22kHz +8dBu from 20Hz to 22kHz

Noise (Un-weighted, 22Hz-22kHz, source impedance 150 Ohm balanced) Line Out (Unity Gain) -6dB Line Out (Unity Gain) Line Out (+30dB Gain) Line Out (+66dB Gain) Equivalent Input Noise

-100.9 dBu -106.6 dBu -91.37 dBu
-64.1 dBu -121.37 dBu

Frequency Response 17Hz to 45 kHz

+/- 0.25 dB

DIRECT INPUT

Maximum Input Level

+8 dBu from 20Hz to 120kHz

Noise (LINE OUT)

-100 dBu (22Hz to 22kHz)

LINE INPUT

Maximum Input Level

+30.5 dBu from 20Hz to 30kHz

Total Harmonic Distortion & Noise

@ 1kHz, +20 dBu output level, no load: Better than 0.002%

@ 20Hz, +20 dBu output level, no load: 0.05% typical (2nd and 3rd harmonic)

Noise (Un-weighted, 22Hz-22kHz, source impedance 40 Ohm balanced, no load) Line Out (Unity Gain)

-101.1 dBu

Frequency Response
<10Hz to 110 kHz 120Hz

+/- 0.25 dB +/- 0.32 dB

Maximum Output Level @ 16Hz to 20kHz

+26 dBu

Total Harmonic Distortion + Noise with SILK Engaged

SILK RED

MIN TEXTURE: @ 100Hz, +20 dBu output level, no load: 0.0131% typical, mostly 3rd harmonic MAX TEXTURE: @ 100Hz, +20 dBu output level, no load: 1.66% typical, mostly 2nd harmonic

SILK BLUE

MIN TEXTURE: @ 100Hz, +20 dBu output level, no load: 0.0079% typical, mostly 3rd harmonic MAX TEXTURE: @ 100Hz, +20 dBu output level, no load: 0.941% typical, mostly 2nd harmonic
9

Specifications (continued)
High Pass Filter (Continuously variable frequency selection from 20Hz to 250Hz) Slope
EQ Noise Un-weighted, 22Hz to 22kHz
Signal Present Illuminates GREEN when input stage signal level reaches -20 dBu
Overload Indicator Illuminates RED when input stage signal level reaches -23 dBu

12 dB/Octave -92 dBu

Diode Bridge Compressor Section

Compressor Noise BW, 22Hz to 22kHz
Compressor Time Constant Specifications

0dB Make-up gain: -84.5 dBu +20dB Make-up gain: -64.2 dBu

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

FAST MF (MEDIUM FAST) MED (MEDIUM) MS (MEDIUM SLOW) SLOW AUTO

Attack 250 S - 2 mS // Release 100 mS - 200 mS typical Attack 1 mS - 5 mS // Release 100 mS - 200 mS typical
Attack 3 mS - 18 mS // Release 350 mS - 700 mS typical Attack 5 mS - 40 mS // Release 600 mS - 1 S typical
Attack 10 mS - 80 mS // Release 800 mS - 1.5 S typical Attack 5m S - 40m S // Release T1 400-900 mS, T2 1-2 S typical

Product Dimensions (W x D x H) Shipping Dimensions (W x D x H) Shipping Weight

19" (48.3 cm) x 10.5" (26.7 cm) x 1.75" (4.5 cm) 24" (61 cm) x 13" (33 cm) x 4" (10.2 cm) 12.25 lbs. (5.5 kg)

10

Low Frequency Peak Response

11

Low Frequency Shelf Response

12

Mid-Band Low Q Frequency Response (boost)

13

Mid-Band Low Q Frequency Response (cut)

14

Mid-Band High Q Frequency Response (boost)

15

Mid-Band High Q Frequency Response (cut)

16

High Frequency Peak

17

High Frequency Shelf

18

High Pass Filter Frequency Response

19

SILK Texture Frequency Response

20

PRODUCT WARRANTY
Rupert Neve Designs warrants this product to be free from defects in materials and workmanship for a period of three (3) years from date of purchase, and agrees to remedy any defect identified within such three year period by, at our option, repairing or replacing the product.
LIMITATIONS AND EXCLUSIONS
This warranty, and any other express or implied warranty, does not apply to any product which has been improperly installed, subjected to usage for which the product was not designed, misused or abused, damaged during shipping, damaged by any dry cell battery, or which has been altered or modified in any way. This warranty is extended to the original end user purchaser only. A purchase receipt or other satisfactory proof of date of original purchase is required before any warranty service will be performed. THIS EXPRESS, LIMITED WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, TO THE EXTEND ALLOWED UNDER APPLICABLE STATE LAW. IN NO EVENT SHALL RUPERT NEVE DESIGNS BE LIABLE FOR ANY SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES RESULTING FROM THE USE OF THIS PRODUCT. Some states do not allow the exclusion or limitation of consequential damages or limitations on how long an implied warranty lasts, so this exclusion may not apply to you.
WARRANTY SERVICE
If you suspect a defect in this product, please contact our support staff for troubleshooting by phone (512-8473013) or email (service@rupertneve.com). If it is determined that the device is malfunctioning, we will issue a Return Material Authorization and provide instructions for shipping the device to our service department.

Rupert Neve Designs PO Box 1969 Wimberley TX 78676 www.rupertneve.com tel: +1 512-847-3013 fax: +1 512-847-8869

775-00027 Rev C4
21



References

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