Neve 1073 User manual

1073 & 1084
Channel Amplifiers
User Guide
Issue 5.2

1073 & 1084 Channel Amplifiers
Table of Contents
Introduction..................................................................................................................................................................3
1073 Channel Amplifiers...........................................................................................................................3
1084 Channel Amplifiers...........................................................................................................................3
High Pass Filter (resistor modification)....................................................................................................3
Installation............................................................................................................................................... 4
Additional nformation.......................................................................................................................... 4
Rack Mount nstructions...........................................................................................................................4
Mains Voltage Adjustment ........................................................................................................................4
Dimensions............................................................................................................................................... 5
Power Requirements.................................................................................................................................5
Mains Supply (rack units).........................................................................................................................6
DC Power Supply ndicators (rack units)......................................................................................................6
Phantom Power........................................................................................................................................6
utput Level Control.................................................................................................................................6
Modules In Transit....................................................................................................................................6
Connector Details......................................................................................................................................7
Amplifier Controls........................................................................................................................................................8
1073 Module.......................................................................................................................................... 8
1084 Module...........................................................................................................................................8
Specifications...........................................................................................................................................9
1073 and 1084 Modules............................................................................................................................9
Recall Sheets 1073 -Vertical Module.....................................................................................................10
1073 - Horizontal Module....................................................................................................................11
1084 - Vertical Module........................................................................................................................12
1084 - Horizontal Module....................................................................................................................13
- 2 -

1073 & 1084 Channel Amplifiers
Introduction
These 45 series modules are the same as the original designs, and contain
all of the original components
1073 Channel Amplifiers
These very popular sounding mic pres are considered by many to capture
the very essence of the Neve sound. n manufacture since the early
1970s, the Class A design offers 3 bands of EQ with one fixed high
frequency and a high pass filter.
1084 Channel Amplifiers
Based on the same technology as the 1073s, the 1084s again deliver the
unique sound and quality of Neve. However, the 1084s offer additional
features, including 3 switchable EQ bands with cut and boost, a high Q for
presence and low pass/high pass filters.
High ass Filter (resistor modification)
Important Note
The high pass filter in both the 1073 & 1084 modules is a passive
design and as such must be correctly terminated to achieve a
maximally flat response.
In order to achieve this there is a 5k1 resistor fitted inside the
module on the back connector between pin E (0v) and pin K (fader
send) see diagram below:
u n situations where the fader connection is not used (most Neve 45
series consoles except the original BCM10's) then the resistor remains in
place.
u n situations where the fader connection is used (BCM10's and AMS
Neve 1073/1084 racks) then the 5k1 resistor should be disconnected and
replaced with a fader or potentiometer whose value is 4k7 / 5k ohms.
n the new 2016 BCM10, the 5k1 resistor value needs to be changed,
please contact AMS Neve for the appropriate resistor value.
Failure to do so will result in incorrect levels and uneven
frequency response.
- 3 -

1073 & 1084 Channel Amplifiers
Installation
u The 1073s and 1084s are available as stand-alone modules, or in a
choice of two housings.
u The 3U rack houses two modules mounted horizontally in a 19" rack-
mounting unit.
u The 5U rack houses eight modules mounted vertically in a 19" rack-
mounting unit.
u Both have rear panels with XLRs for transformer balanced /O.
u The 3U rack rear panel has a fused voltage selector EC mains input
connector. The 5U rack has a free standing AC supply with a fused,
voltage selector EC mains input connector and connects to the rack via a
connector and a 1.5 meter cable.
u Modules of any combination can be fitted into a rack unit
Additional Information
Rack Mount Instructions
u Elevated Operating Ambient- f installed in a closed or multi-unit rack
assembly, the operating ambient temperature of the rack environment
may be greater than room ambient. Therefore, consideration should
be given to installing the equipment in an environment compatible with
the maximum ambient temperature (Tma) specified by the manufacturer.
u Reduced Air Flow - nstallation of the equipment in a rack should be
such that the amount of air flow required for safe operation of the
equipment is not compromised.
u Mechanical Loading - Mounting of the equipment in the rack should be
such that a hazardous condition is not achieved due to uneven mechanical
loading.
u Circuit Overloading - Consideration should be given to the connection
of the equipment to the supply circuit and the effect that overloading of
the circuits might have on overcurrent protection and supply wiring.
Appropriate consideration of equipment nameplate ratings should be used
when addressing this concern.
u Reliable Earthing - Reliable earthing of rack-mounted
equipment should be maintained. Particular attention should be
given to supply connections other than direct connections to the
branch circuit (e.g. use of power strips).
Recommended Tma = 50 deg C
Mains Voltage Adjustment
u Switch off unit,
u Remove fuse.
u Turn inner barrel with screwdriver or coin until correct voltage figure is
under the white arrow on the housing.
u Replace fuse.
- 4 -

1073 & 1084 Channel Amplifiers
Dimensions
Stand-alone
Modules
Width
mm (inches)
Height
mm (inches)
Depth
mm (inches)
Approx. Weight
kg (lbs)
1073 Module 45 (1.8) 222 (8.75) 254 (10) 2.5 (5.5)
1084 module 45 (1.8) 222 (8.75) 254 (10) 2.5 (5.5)
19” Rack Mounting U Depth
mm (inches)
Height
mm (inches)
Approx. Weight
kg (lbs)
2 Module Version 3 405 (16) 133 (5.25 11 (24.2)*
8 Module Version 5 405 (16) 222 (8.75) 30 (66)*
*Fully populated rack
ower Requirements
Rack Units 3U 5U
Rated olt age 100- 230 AC 100- 230 AC
Rated Frequency 50- 60 Hz 50- 60Hz
Rated Cur rent 0.5A Max 0.8A Max
Primary Protection Fuse:
Operating oltage 100- 230 AC 100- 230 AC
Fuse Rating and Type T0.5A H 250
20mm x 5mm CERAMIC
T1A H 250
20mm x 5mm CE RAMIC
Location IEC Mains connector IEC Mains connector
Secondary Protection Fuse:
Output oltage 24 DC
Fuse Rating and Type T2.0A L 250
20mm x 5mm GLASS
Location F1
Output oltage 48 DC
Fuse Rating and Type T 250mA L 250
20mm x 5mm GLASS
Location F2
Modules Power
1073 Module 106mA ±10mA at 24 DC. Negative Earth
1084 Module 106mA ±10mA at 24 DC. Negative Earth
- 5 -

1073 & 1084 Channel Amplifiers
Mains Supply (rack units)
u The 3U rack has a fused, voltage selector EC mains input connector.
u The 5U rack has a free standing AC supply with a fused, voltage
selector EC mains input connector and connects to the rack via a
connector and a 1.5 meter cable.
u The mains switch on the rear panel of the 3U rack unit is non-
illuminating.
u The CH (chassis) and 0V are linked internally.
DC ower Supply Indicators (rack units)
u The red LED on the front panel of both 3U and 5U rack units indicates
+24V power healthy when illuminated.
u The green LED on the front panel of both 3U and 5U rack units
indicates +48V power healthy when illuminated.
hantom ower
Phantom power can be supplied to each module by pressing the phantom
power switch on the front panel of the 3U or 5U rack. The LED in the
switch will illuminate confirming that phantom power is supplied.
Output Level Control
u Each channel has an independent Output Level Control. The control is
post-input, post-EQ and pre-output. This control can reduce the level at
the output.
u When the Output Control is fully clockwise the output gain is unity. The
output is 20dB down with the control in the mid-position.
Modules In Transit
Please note that the designs of the AMS Neve classic modules and
racks are to the original Neve specifications and are not designed
to withstand transit.
u Should you wish to move the rack from one location to another (for
example shipping to another studio location or returning the rack to a
repair centre for servicing), please remove all installed modules from the
rack and package the rack and each module separately in packaging
suitable to withstand the intended transit.
u f modules are installed in a rack while in transit, damage to the
internal edge connectors may occur.
- 6 -

1073 & 1084 Channel Amplifiers
Connector Details
Standalone 1073 & 1084
Module Wiring to 18 way Free Plug
- 7 -

1073 & 1084 Channel Amplifiers
Amplifier Controls
1073 Module
u High Frequency: Smooth +/-16dB fixed frequency shelving at 12kHz.
u Low Frequency: Smooth +/-16dB shelving with selectable frequencies of
35Hz, 60Hz, 110Hz & 220Hz.
u Mid Frequency: Smooth +/-18dB peaking, fixed 'Q' with,
selectable centre frequencies of 0.36kHz,
0.7kHz, 1.6kHz, 3.2kHz, 4.8kHz & 7.2kHz.
u High Pass Filter: 18dB per octave slope, switchable between
50Hz, 80Hz, 160Hz & 300Hz.
u EQL Button: Switches the equaliser in or out of circuit.
u Phase Button: Gives 180° Phase change at Balanced
Output.
1084 Module
u High Frequency: Smooth + /-16dB shelving with selectable frequencies of
0kHz, 12kHz and 16kHz.
u Low Frequency: Smooth +/-16dB shelving with selectable
frequencies of 35Hz,60Hz, 110Hz & 220Hz.
u Mid Frequency: Smooth +/-12dB or +/-18dB peaking with
switchable 'High Q',selectable centre
frequencies of 0.36kHz, 0.7kHz, 1.6kHz,
3.2kHz, 4.8kHz & 7.2kHz.
u High Pass Filter: 18dB per octave slope, switchable between
45Hz, 70Hz, 160Hz & 360Hz.
u Low Pass Filter: 18dB per octave slope, switchable between
6kHz, 8kHz, 10kHz,14kHz, & 18kHz.
u EQL Button: Switches the equaliser in or out of circuit.
u Phase Button: Gives 180° Phase change at Balanced
Output.
- 8 -

1073 & 1084 Channel Amplifiers
Specifications
1073 and 1084 Modules
u Microphone nput: nput mpedance 300W or 1200W, gain
+80db to +20dB in 5dB steps.
u Line nput: nput mpedance 10,000W bridging, gain
+20dB to -10dB in5dB steps. Both inputs
are transformer balanced and earth free.
u Output: Maximum output is >+26dBu into 600W.
Output impedance is 75W @1kHz. Output
is transformer balanced and earth free.
u Distortion: Not more than 0.07% from 50Hz to 10kHz
at +20dBu output (80kHz bandwidth) into
600W.
u Frequency Response: +/-0.5dB 20Hz to 20kHz, -3dB at 40kHz
Eq Out.
u Noise: Not more than -83dBu at all Line gain
settings Eq n/Out (22Hz to 22kHz
bandwidth), E N better than -125dBu @
60dB gain.
- 9 -

1073 & 1084 Channel Amplifiers
Recall Sheets 1073 -Vertical Module
- 10 -

1073 & 1084 Channel Amplifiers
1073 - Horizontal Module
- 11 -

1073 & 1084 Channel Amplifiers
1084 - Vertical Module
- 12 -

1073 & 1084 Channel Amplifiers
1084 - Horizontal Module
- 13 -