TECHNICAL DATASHEET
AHM-64 is an audio matrix processor for sound
management and installation. It is designed for
audio distribution, paging, conferencing and
speaker processing in a multitude of environments
including corporate, hospitality, education, event
and multi-purpose venues, retail, theatres, cruise
ships and sports venues.
The AHM-64 processor is complemented by an
extended ecosystem of remote audio expanders,
remote controllers, interfaces, apps and software.
A family of portable, rack-mountable or wall-mount
audio expanders is available with a choice of
proprietary point-to-point Layer-2 or Dante transport
protocols.
• 64x64 processing matrix
• 12x12 local analogue I/O
• I/O Port for audio networking, up to 128x128
• Dante 96kHz 64x64 optional card
(AES67 and DDM ready)
• 128x128 built-in SLink port for audio expansion
• 64 configurable processing outs – up to 64
mono/stereo zones
• 96kHz FPGA core with ultra-low latency
• Compatible with IP1, IP6, IP8 remote controllers
• 2x2 local GPIO plus networkable GPIO interface
• DC backup power supply
• System Manager software
• Custom Control app and editor
• 32 user profiles
• Integrated stereo / dual mono playback
• Event scheduler
AHM-64 Technical Datasheet
Sound management tools
• 8x Automatic Mic Mixers
• AEC (Acoustic Echo Cancellation) – optional module
• ANC (Ambient Noise Compensation)
• Priority ducking
• 8-band PEQ, dynamics and delay on every input and zone
• Speaker processing with x-over filter, delay, limiter and PEQ
ALLEN&HEATH
A&E SPECIFICATION
The unit shall be a 2u rack-mountable digital matrix processor,
capable of 64 input channels and 64 output channels, all
independently assigned. The unit shall operate at 96kHz sample
rate and employ FPGA technology for digital signal processing.
The system latency from analogue input to output shall not exceed
1ms.
All input channels shall be configurable mono/stereo and have
access to any local or remote input.
Output channels shall be configurable as mono/stereo zones or as
speaker processing outputs with 2, 3 or 4-way Crossovers, allowing
up to 64 mono zones / 32 stereo zones, or any combination of
zones and speaker processing outputs not exceeding 64 total
channels.
All input channels shall provide the following processing: Trim,
Polarity, Gate, Insert point, 8-band Parametric EQ, Compressor,
Delay and Automatic Mic Mixing (AMM).
All zones shall provide the following processing: Source Selector,
Insert point, 8-band Parametric EQ, 28-band GEQ, Compressor,
Delay, Ambient Noise Compensation (ANC) and Limiter.
All speaker processing outputs shall provide the following
processing: Crossover filters with selectable filter type and slope,
PEQ, Delay and Limiter.
All output channels shall be routable to any local or remote output.
There shall be a local SLink Ethernet audio expansion port,
supporting multiple Audio-over-Ethernet protocols and providing
access to up to 128x128 I/O, and allowing remote connection and
preamp control of Allen & Heath audio expanders, connected via a
single Cat5e or higher cable.
An RJ45 Control Network port shall be provided on the rear of the
unit for connection to System Manager software, IP remote
controllers, Custom Control app and TCP control.
One 128x128 I/O port for optional digital interface modules shall
be provided. The Dante optional module shall provide a minimum
of 64x64 I/O at 96kHz, and be compliant with AES67 and Dante
Domain Manager.
The unit shall provide the facility to save 500 presets. The presets
shall be nameable and a descriptive text entry per preset provided.
A crossfade of up to 20 seconds shall be available to apply to any
combination of Inputs, Zones, Groups, Input/Zone Crosspoints and
Zone/Zone Crosspoints.
The unit shall provide the facility to save 50 events. The events shall
be nameable and should allow for the scheduled recall of presets
at a specified time on specific days, or every day, with the option for
the event to be triggered repeatedly or just once.
The unit shall allow the creation and storage of up to 32 user
profiles, each with an editable name, password and permission
settings.
The 8-band Parametric EQ shall provide Bell, Constant Q, Shelving,
LPF, HPF and Notch filter types selectable per band.
The unit shall have 12 balanced inputs on pluggable Phoenix
terminal blocks. Each input shall have independent gain control
with +60dB of gain, a -20dB active PAD and +48V phantom power.
The unit shall have 12 balanced outputs on pluggable Phoenix
terminal blocks with a nominal level of +4dBu.
The routing matrix mixer shall be capable of mixing all inputs to all
zones, as well as all zones to other zones.
The unit shall provide Automatic Mic Mixing (AMM) of up to 64
microphone sources into 1, 2 ,4 or 8 zones. The AMM shall be
capable of running in classic gain sharing mode or optionally as a
NOM (Number of Open Microphones) algorithm.
The unit shall offer a slot for optional processing modules including
Acoustic Echo Cancellation.
Playback of stereo or dual mono .WAV, MP3 and FLAC files shall be
supported, with internal storage for the audio files.
The unit shall allow the connection of two general purpose inputs,
and two general purpose relay outputs, via pluggable Phoenix
connectors on the rear of the chassis. Each input connector shall
allow analogue control of Mutes, Levels, Preset Recall, Custom
MIDI and Audio Playback via a 0-10V control signal. Output 1 shall
support normally closed and normally open operation, and output
2 shall support normally open operation. The outputs shall be
configurable to respond to Mutes, Preset Recalls, Audio Playback
and Level Sensing. An optional 8x8 networkable GPIO interface
shall be available for expansion of the GPIO functionality.
Networkable, PoE-enabled remote controllers shall be available to
complement the unit, including wallplate controllers in both US and
EU formats, and desktop controllers with a minimum of 8
motorised faders and 8 LCD displays.
The unit shall have an integrated power supply accepting AC mains
voltages of 100-240V, 50/60Hz, 70W max via an earthed 3-pin IEC
C6 male connector mounted on the rear chassis. A DC input for
backup power supply shall be included, capable of accepting a
12V input on a 2-pin Phoenix terminal block. For redundant power
supply operation, the internal power supply shall be capable of
operating simultaneously with an external DC supply.
The unit shall be the Allen & Heath AHM-64.
AHM-64 Technical Datasheet
ALLEN&HEATH
BLOCK DIAGRAM
TRIM
AHM-64 SYSTEM BLOCK DIAGRAM
XOver Filters
PEQ / GEQ
DELAY
LEVEL
LIM
LISTEN
Speaker Processing
Configurable 2 / 3 / 4 way XOver
Source Selector
Sidechain
Ambient
Gap
Stereo ch
only
+
8-band PEQ/
Filters
GEQ
COMP
DELAY
ANC
gain
L R
BAL
INSERT
Post-Insert Post-CompPost-PEQPre-Insert
28-band 1/3 octave
Post-GEQ
MUTE FADER
Control Groups
Bandpass Noise (Sweep)
ZONE MIX
Configurable Mono / Stereo
White Noise
Pink Noise
LEV
Sine (20-20kHz)
SIG GEN x8
MUTE
Stereo / Split Mono
WAV, mp3, FLAC
Playback
PATCH
INPUT
SLink
128 Inputs
gigaACE
Global Direct Out
source option
I/O Port
DX / dSnake / GX /
64 / 128 Inputs
option card
only
AMM key
V1.0
AHM-64
MIC/LINE inputs
PP
-20dB
PAD
Audio interface
+
-
GAIN
ADC
48V
Stereo ch
WIDTH
INPUT CHANNEL x 64
Configurable Mono / Stereo
TRIM
POL
0
Output
SigGen
Listen
128 Outputs
SLink
SLink Inputs
I/O Port inputs
DX / dSnake / GX /
gigaACE, ME
X-Overs
Local Inputs
64 / 128 Outputs
Audio interface
option card
I/O Port
LIM
ZONE Output
ZONE
-
Ready
Input DIR OUT
DAC
BAL
+
+4dBu
Line Outputs
AHM-64
LISTEN
OUTPUT
PATCH
Processing Exp
I/O Port outputs
Local outputs
SLink outputs
INSERT
SENDS
Optional Processing Expansion
IP or ZONE
Insert
Processing Exp
SLink inputs
I/O Port inputs
Local inputs
RETURNS
INSERT
LISTEN
Post-PEQ
Post-DelayPost-Ins APost-Preamp
TRIM
DIRECT OUT
Ducker
GATE/ COMP
INSERT A
8-band PEQ/
Filters
INSERT B
DELAY
AMM
gain
MUTE
Control Groups
FADER
Control Groups
Crosspoint
LEV
IP to ZONE
64 x 64 processing matrix
Sidechain
Sidechain
AHM-64 Technical Datasheet
ZONES
ALLEN&HEATH
TECHNICAL SPECIFICATION
INPUTS
Mic/Line Inputs
Mic/Line Preamp
Input Sensitivity
Analogue Gain
Pad
Maximum Input Level
Input Impedance
Mic EIN
OUTPUTS
Analogue Outputs
Output Impedance
Nominal Output
Maximum Output Level
Residual Output Noise
Balanced, +48V phantom power
Fully recallable
-60 to +15dBu
+5 to +60dB, 1dB steps
-20dB Active PAD
+30dBu (PAD in)
>3kΩ (Pad out), >8kΩ (Pad in)
-127dB with 150Ω source
Balanced, Relay protected
<75Ω
+4dBu = 0dB meter reading
+22dBu
-94dBu (muted, 20-20kHz)
-92dBu (muted, 20-40kHz)
SYSTEM
Measured balanced XLR in to XLR out, 20-20kHz, +5dB
Gain, Pad out, signal @ 0dB (meter)
Dynamic Range
System Signal to Noise
Frequency Response
THD+N (analogue in to out)
Headroom
Sampling Rate
ADC
DAC
Playback
Internal Storage
File types
110dB
-94dB
20Hz - 25kHz +0/-0.8dB
0.005% @ +16dBu output,
1kHz +5dB gain
+18dB
96kHz +/- 20 PPM
32-bit Delta-Sigma
32-bit Delta-Sigma
~3GB
Mono/stereo .WAV (16/24bit,
44.1/48/96kHz), MP3, FLAC
DIMENSIONS AND WEIGHTS
Width x Depth x Height x Weight
AHM-64
AHM-64 Boxed
482.6mm x 364mm x 91.2mm
(19” x 14.3” x 3.6”) x 7kg (15.5lbs)
600 x 500 x 180 mm
(23.6” x 19.7”x 7.1”) x 9.5kg
(21lbs)
AHM-64 Technical Datasheet
Operating Temperature
Range
Mains Power
DC Power
0 deg C to 40 deg C
(32 deg F to 104 deg F)
100-240V AC, 50-60Hz,
70W max
12VDC - 5A minimum
capable supply
ALLEN&HEATH
PROCESSING SPECIFICATION
ZONE PROCESSINGINPUT PROCESSING
64 Input Channels
Trim
Polarity
Stereo Width Control
Gate
Sidechain
Threshold
Depth
Attack
Hold
Release
Insert
PEQ
Configurable mono or stereo
+/-24dB digital trim
Normal/Reverse
L/R, R/L, L -Pol/R, R -Pol/L, Mono,
L/L, R,R, M/S
Self-key or source selectable, with
12dB/octave Lo-Pass and Hi-Pass
-72dBu to +12dBu
0 to 60 dB
50us to 300ms
10ms to 5s
10ms to 1s
In/Out, +4dBu/-10dBV level
Up to 64 Zones
Source Selector
Insert
GEQ
PEQ
Compressor
Delay
ANC
Ambient Level
Gap
Gain Element
Configurable mono or stereo
Up to 20 sources, variable level,
Fade In and Fade Out time <20s
In/Out, +4dBu/-10dBV level
28 bands 31Hz -16kHz, +/-12dB,
constant-Q
See Input Processing
See Input Processing
Up to 683ms
Selectable source and metering
point, Gain Differential -18dB to
40dB
Selectable source and metering
point, Threshold -62dB to -20dB,
Time 0-5000ms
Min / Max Gain, Rate 0-30dB/s
Type
Band 1 - 8
Bell Width
Shelving Type
Hi-Pass, Lo-Pass Filter
Compressor
Sidechain
Threshold
Compressor parameters
Delay
8-Band fully parametric, +/-15dB
Selectable LF/HF Shelving, Bell
(variable or constant Q), Hi-Pass /
Lo-Pass, Notch
0.50 – 6.00 Q
Classic Baxandall
12dB/octave
Peak or RMS sensing
Self-key or source selectable, with
12dB/octave Lo-Pass and Hi-Pass
-46dBu to 18dBu
Threshold, Ratio, Attack, Release
Up to 683ms
Limiter
Variable Threshold, Attack and
Release
SPEAKER PROCESSING
Crossovers
Filters
PEQ
Delay
Limiter
Configurable 2, 3, 4 way
Asymmetrical, selectable 1st
order, Butterworth 12/18/24 db/
octave, LR 12/24 dB/octave
4-Band fully parametric
Up to 683ms
See Zone Processing
AMM
Channels
Modes
1x64, 2x32, 4x16 or 8x8
D-Classic gain sharing or NOM
AHM-64 Technical Datasheet
ALLEN&HEATH
DIMENSIONS
8
7
.
0
0
/
3
.
5
"
9
1
.
2
0
/
3
.
6
"
371.0/14.6"
18.00/0.4"
275.96/10.9"
439.0017.28"
482.60/19"
21.80/0.86"
Allen & Heath reserves the right to alter any information supplied in this document or any other document supplied hereafter. E&OE.
AHM-64 Technical Datasheet
AP12316
ALLEN&HEATH
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