As part of our policy of continual product improvement,
we reserve the right to alter specifications without notice
but with due regard to all current legislation.
Disclaimer: The information in this manual has been
carefully checked and is believed to be accurate at the
time of publication. However, no responsibility is taken by
us for inaccuracies, errors or omissions nor any liability
assumed for any loss or damage resulting either directly or
indirectly from use of the information contained within it.
These 45 series modules are the same as the original designs, and contain all of the original
components.
1073 Chan nel Am pli fiers
These very popular sounding mic pre's are considered by many to capture the very essence of the
Neve sound. In 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 Chan nel Am pli fiers
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 Pass Fil ter (re sis tor mod i fi ca tion)
Im por tant 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:
In situations where the fader connection is not used (most Neve 45 series consoles except
BCM10's) then the resistor remains in place.
In 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.
-All mod ules which leave the fac tory with ei ther a 3U or 5U rack unit will have the 5K1 re sis tor
re moved.
Failure to do so will result in incorrect levels and uneven frequency response.
User Guide Is sue 3Page 1
1073 & 1084 Chan nel Am pli fiersIn stal la tion
In stal la tion
The 1073s and 1084s are available as stand-alone modules, or in a choice of two housings.
The 3U rack houses two modules mounted horizontally in a 19” rack-mounting unit.
The 5U rack houses eight modules mounted vertically in a 19” rack-mounting unit.
Both have rear panels with XLRs for transformer balanced I/O.
The 3U rack rear panel has a fused, voltage selector IEC mains input connector. The 5U rack has a
free standing AC supply with a fused, voltage selector IEC mains input connector and connects to
the rack via a connector and a 1.5 meter cable.
Modules of any combination can be fitted into a rack unit.
Ex am ple: 5U Rack fit ted with two 1073 mod ules and six 1084 mod ules
User Guide Is sue 3Page 2
1073 & 1084 Chan nel Am pli fiersDi men sions
Di men sions
Stand-alone Mod ulesWidth
1073 Module45 (1.8)222 (8.75)254 (10)2.5 (5.5)
1084 Module45 (1.8)222 (8.75)254 (10)2.5 (5.5)
19" Rack Mount ingUDepth
2 Mod ule Ver sion 3405 (16)133 (5.25)11 (24.2) *
8 Mod ule Ver sion 5405 (16)222 (8.75)30 (66) *
* Fully populated rack
Power Re quire ments
Rack Units3U5U
Rated Volt age100- 230V AC100- 230V AC
Rated Fre quency50- 60 Hz50- 60Hz
Rated Cur rent0.5A Max0.8A Max
mm (inches)
Height
mm (inches)
mm (inches)
Depth
mm (inches)
Height
mm (inches)
Ap prox.
Weight
kg (lbs)
Ap prox. Weight
kg (lbs)
Pri mary Pro tec tion Fuse:
Op er at ing Volt age100- 230V AC100- 230V AC
Fuse Rat ing and TypeT0.5A H 250V
20mm x 5mm CE RAMIC
Lo ca tionIEC Mains con nec torIEC Mains con nec tor
Sec on dary Pro tec tion Fuse:
Out put Volt age24V DC
Fuse Rat ing and TypeT 2.0A L 250V
Lo ca tionF1
Out put Volt age48V DC
Fuse Rat ing and Type T 250mA L 250V
Lo ca tionF2
ModulesPower
1073 Mod ule
1084 Mod ule
106mA ±10mA at 24V DC. Neg a tive Earth
106mA ±10mA at 24V DC. Neg a tive Earth
T1A H 250V
20mm x 5mm CE RAMIC
20mm x 5mm GLASS
20mm x 5mm GLASS
User Guide Is sue 3Page 3
1073 & 1084 Chan nel Am pli fiersPhan tom Power
Mains Sup ply (rack units)
The 3U rack has a fused, voltage selector IEC mains input connector.
The 5U rack has a free standing AC supply with a fused, voltage selector IEC mains input connector
and connects to the rack via a connector and a 1.5 meter cable.
The mains switch on the rear panel of the 3U rack unit is non-illuminating.
The CH (chassis) and 0V are linked internally.
DC Power Sup ply In di ca tors (rack units)
The red LED on the front panel of both 3U and 5U rack units indicates +24V power healthy when
illuminated.
The green LED on the front panel of both 3U and 5U rack units indicates +48V power healthy when
illuminated.
Phan tom Power
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.
Out put Level Con trol
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.
When the Output Control is fully clockwise the output gain is unity. The output is 20dB down with
the control in the mid-position.
User Guide Is sue 3Page 4
1073 & 1084 Chan nel Am pli fiersCon nec tor De tails
Standalone 1073 & 1084
Module Wiring to 18 way Free Plug
A
B
C
D
E
F
H
J
K
L
M
N
P
R
S
T
U
V
0V
Hi
Lo
0V
Hi
Lo
Link
Unbalanced O/P
Hi
Lo
BAL O/P
+24V at 106mA
Mic I/P
Line I/P
-20dBu
-3dBu
0dBu
0dBu
Technical
Earth Link
To Pin V
To Pin V
To Pin V
Con nec tor De tails
User Guide Is sue 3Page 5
1073 & 1084 Chan nel Am pli fiersAm pli fier Con trols
dB
LINE
-20
10
0
+10
OFF
-2030
MIC
40
50
OFF
60
70
-80
+
-
0
+
-
0
OFF
0.36
0.7
1.6
3.2
KHz
Hz
4.8
7.2
+
-
0
OFF
35
60
110
220
Hz
OFF
50
80
160
300
EQL
PHASE
dB
LINE
-20
10
0
+10
OFF
-2030
MIC
40
50
OFF
60
70
-80
+
-
0
+
-
0
OFF
0.36
0.7
1.6
3.2
KHz
4.8
7.2
Hz
+
-
0
OFF
35
60
110
220
OFF
50
80
160
300
Hz
E
Q
L
P
H
A
S
E
Am pli fier Con trols
1073 Mod ule
High Frequency: Smooth +/-16dB fixed frequency shelving at 12kHz.
Low Frequency:Smooth +/-16dB shelving with selectable frequencies of 35Hz,
60Hz, 110Hz & 220Hz.
Mid Frequency:Smooth +/-18dB peaking, fixed 'Q' with, selectable centre
frequencies of 0.36kHz, 0.7kHz, 1.6kHz, 3.2kHz, 4.8kHz &
7.2kHz.
High Pass Filter: 18dB per octave slope, switchable between 50Hz, 80Hz,
160Hz & 300Hz.
EQL Button:Switches the equaliser in or out of circuit.
Phase Button:Gives 180° Phase change at Balanced Output.
User Guide Is sue 3Page 6
1073 & 1084 Chan nel Am pli fiersAm pli fier Con trols
dB
LINE
-20
10
0
+10
OFF
-2030
MIC
40
50
OFF
60
70
-80
+
-
OFF
16
12
10
KHz
+
-
OFF
0.35
0.7
1.6
3.2
KHz
4.8
7.2
Hz
+
-
OFF
35
60
110
220
Hz
10
14
18
OFF
45
160
70
8
6
360
KHz
EQL
PHASE
Hi-Q
dB
LINE
-20
10
0
+10
OFF
-2030
MIC
40
50
OFF
60
70
-80
+
-
OFF
16
12
10
KHz
E
Q
L
P
H
A
S
E
+
OFF
0.35
0.7
1.6
3.2
4.8
7.2
Hz
+
-
OFF
35
60
110
220
Hz
10
14
18
OFF
45
1
6
0
70
8
6
360
KHz
Hi
Q
KHz
-
1084 Mod ule
High Frequency: Smooth +/-16dB shelving wit selectable frequencies of 10kHz,
12kHz and 16kHz.
Low Frequency:Smooth +/-16dB shelving with selectable frequencies of 35Hz,
60Hz, 110Hz & 220Hz.
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.
High Pass Filter: 18dB per octave slope, switchable between 45Hz, 70Hz, 160Hz
& 360Hz.
Low Pass Filter: 18dB per octave slope, switchable between 6kHz, 8kHz, 10kHz,
14kHz, & 18kHz.
EQL Button: Switches the equaliser in or out of circuit.
Phase Button: Gives 180° Phase change at Balanced Output.
User Guide Is sue 3Page 7
1073 & 1084 Chan nel Am pli fiersSpec i fi ca tions
Spec i fi ca tions
1073 and 1084 Mod ules
Microphone Input:Input Impedance 300W or 1200W, gain +80db to +20dB in
5dB steps.
Line Input:Input Impedance 10,000W bridging, gain +20dB to -10dB in
5dB steps.
Both inputs are transformer balanced and earth free.
Output:Maximum output is >+26dBu into 600W. Output impedance is
75W @1kHz.
Output is transfomer balanced and earth free.
Distortion:Not more than 0.07% from 50Hz to 10kHz at +20dBu output
(80kHz bandwidth) into 600W.
Frequency Response:+/-0.5dB 20Hz to 20kHz, -3dB at 40kHz Eq Out.
Noise:Not more than -83dBu at all Line gain settings Eq In/Out
(22Hz to 22kHz bandwidth).
EIN better than -125dBu @ 60dB gain.
User Guide Is sue 3Page 8
dB
LINE
-20
10
0
+10
OFF
-2030
MIC
40
50
OFF
60
70
-80
+
-
0
+
-
0
OFF
0.36
0.7
1.6
3.2
KHz
Hz
4.8
7.2
+
-
0
OFF
35
60
110
220
Hz
OFF
50
80
160
300
EQL
PHASE
1073 & 1084 Chan nel Am pli fiersRe call Sheets
Re call Sheets
1073 - Vertical Mod ule
User Guide Is sue 3Page 9
dB
LINE
-20
10
0
+10
OFF
-2030
MIC
40
50
OFF
60
70
-80
+
-
0
+
-
0
OFF
0.36
0.7
1.6
3.2
KHz
4.8
7.2
Hz
+
-
0
OFF
35
60
110
220
OFF
50
80
160
300
Hz
E
Q
L
PHASE
1073 & 1084 Chan nel Am pli fiersRe call Sheets
1073 - Hor i zon tal Mod ule
User Guide Is sue 3Page 10
dB
LINE
-20
10
0
+10
OFF
-2030
MIC
40
50
OFF
60
70
-80
+
-
OFF
16
12
10
KHz
+
-
OFF
0.35
0.7
1.6
3.2
KHz
4.8
7.2
Hz
+
-
OFF
35
60
110
220
Hz
10
14
18
OFF
45
160
70
8
6
360
KHz
EQL
PHASE
Hi-Q
1073 & 1084 Chan nel Am pli fiersRe call Sheets
1084 - Ver ti cal Mod ule
User Guide Is sue 3Page 11
1073 & 1084 Chan nel Am pli fiersRe call Sheets
dB
LINE
-20
10
0
+10
OFF
-2030
MIC
40
50
OFF
60
70
-80
+
-
OFF
16
12
10
KHz
E
Q
L
P
H
A
S
E
+
OFF
0.35
0.7
1.6
3.2
4.8
7.2
Hz
+
-
OFF
35
60
110
220
Hz
10
14
18
OFF
45
160
70
8
6
360
KHz
Hi
Q
KHz
-
1084 - Hor i zon tal Mod ule
User Guide Is sue 3Page 12
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