Biamp AMP-A460H User manual

AMP-A460H
OPERATION MANUAL
NOVEMBER 2016

A460H - Setup and Installation
Setup and Use
Installation
Each unit requires a space of 1.75 inch (44mm) high, 8.7 inch (221mm) wide with 10.47 inch (266mm)
depth and may be mounted on a flat surface or in a rack enclosure.
Install the unit away from heat sources, such as vents and radiators, and in rooms with adequate
ventilation. Ensure that air can circulate freely behind, beside, and above the unit where possible. Do not
exceed the ambient operating temperature of 104° F (42°C). Be aware of conditions in an enclosed rack
that may cause the temperature to exceed ambient room conditions.
Rack Mounting
The unit ships with one 1.75 inch (44mm) high and 19 inch (483mm) wide rack mount panel. This is
designed to connect up to two A460H amplifiers. The rack mount kit includes eight screws, four nuts and
a faceplate.
Rack mounting the amplifiers is achieved by aligning the supplied rack panel faceplate holes with the
corresponding holes in the front of the amplifier and screwing them together.
If only one amplifier is used, then the additional four supplied screws and nuts may be used to ‘blank off’
the four remaining open holes in the rack panel.
Mounting the faceplate using screws with washers (not supplied) will prevent marring of the front panel.
Custom mounting
Mounting holes that fit four #4 sheet metal screws (not supplied) are available on the top cover of the
amplifier.
Operational guidelines
CAUTION
All speaker wiring connections should be made by qualified personnel and with the amplifier power removed. The 100V output
requires Class 3 wiring. Please refer to a qualified electrician or other qualified person according to local codes.
NOTE
Any screws used must not exceed ¼ inch (6mm) depth into the top of the A460H enclosure
CAUTION
Attention
should be paid to the
Connections
and Setup
sections
to
configure
the signal
path correctly from the input device.

A460H - Rear Panel Overview
AC Power Socket
Provides for connection of the appropriate power cord. Each amplifier uses a switch mode power supply
that has an operating voltage of 100-240V at 50/60 Hz.
Amplifier Output Connections
Speaker Connection
To minimize power loss, use a speaker cable of appropriate gauge for the load impedance. For long
speaker cables, choose a low capacitance cable to minimize high frequency loss. Use the supplied plug-
in barrier strip connectors to connect loudspeaker outputs. If stranded speaker wire is used, be sure to
incorporate all strands into the connector, as stray strands can short to the adjacent terminal or chassis.
Do not leave excessive bare wire outside the terminals, as this can lead to shorts. Use of the supplied
cable restraints is required to secure the cable in the connector. To facilitate parallel wiring, each
connector allows for the connection of two conductors to each amplifier channel.
1. Input Channels 1 & 2
2. Input Channels 3 & 4
3. Constant Voltage Switch - Channels 1 & 2
4. Constant Voltage Switch - Channels 3 & 4
5. Bridge Mode Switch - Channels 1 & 2
6. Bridge Mode Switch - Channels 3 & 4
7. High Pass Filter Switch - Channels 1 & 2
8. High Pass Filter Switch - Channels 3 & 4
9. Speaker Outputs 1 & 2
10. Speaker Outputs 3 & 4
11. Status LEDs for Channels 1, 2, 3 & 4
•Green – Signal Present
•Amber – Signal or Thermal Limit Mode
•Red – Channel in Protect Mode
12. AC Power Connection
CAUTION
Do not remove or defeat the ground prong on the power cord, as this will constitute a shock hazard. Equipment should be
connected to a mains socket outlet with a protective earthing connection. This plug is the main disconnecting device and should
remain readily operable. There are no user interchangeable parts. Please contact Biamp Technical Support or your local distributor
for all service requirements.
CAUTION
All speaker wiring connections should be made by qualified personnel and with the amplifier power removed. The 100V output
requires Class 3 wiring. Please refer to a qualified electrician or other qualified person according to local codes.

A460H – Connections
Input Wiring
All wiring examples are Single Channel Connections
Balanced Input Connections
Unbalanced Input Connections
Speaker Wiring
All wiring examples are Single Channel Connections
Single Channel 4 or 8 ohm
Bridged mode 4 or 8 ohm
Bridged mode 70/100V

A460H - Setup
Gain staging
The amplifier channels are intended to be used with the default output blocks available in Tesira Software.
Care should be taken to match the speaker load to the output capabilities (wattage) of the amplifier. For example, if a
low-impedance single channel speaker load is 60 watts you are perfectly matched at the nominal input level.
Speaker loads less than the rated output of the amplifier will require adjustment to the analog output of the output
device.
Low impedance considerations
Single Channel Mode
In Single Channel mode - up to four 60 watt channels can be driven at 4 or 8 Ohms at the same time.
Bridge and 70/100V Mode
In Bridged or CV mode (Constant Voltage mode, or 70/100V mode), channel 1 and 2 as well as 3 and 4
can be independently bridged together. Inputs 1 and 3 should be used.
Constant Voltage considerations
There is no wiring or switch setup difference between 70V and 100V operation. When using the amplifier in
Constant Voltage mode, the CV, Bridge, and HPF switches must be enabled. The amplifier only supports
Constant Voltage mode when the amplifier channels are bridged.
For 70V operation the nominal signal being sent from the output device to the amplifier input should be 0dbu.
For 100V operation increasing the nominal signal being sent from the output device to the amplifier input should be
+1.6dbu.
Note
To keep correct input level and noise floor ratio the use of the ‘Full Scale’ analog output attenuation on the output device should be
used to adjust the input gain being sent to the amplifier .
Note
The HPF (High Pass Filter) switch should be enabled as part of the 70V or 100V configuration.
The Bridge switch must be enabled when using the amplifier in 70V or 100V mode.

A460H - Amplifier Current Draw
AMP-A460H
1/8 Power
Bridged Constant Voltage
4 ohm 8 ohm 4 ohm 8 ohm 70V 100V
Current Draw Amps Amps Amps Amps Amps Amps
100VAC 50Hz 1.1 0.7 0.9 0.8 0.8 0.8
100VAC 60Hz 1.1 0.7 0.9 0.8 0.8 0.8
120VAC 60Hz 1.0 0.6 0.8 0.7 0.7 0.7
230VAC 50Hz 0.6 0.4 0.5 0.5 0.4 0.4
240VAC 50Hz 0.6 0.4 0.5 0.4 0.4 0.4
1/3 Power
Bridged Constant Voltage
4 ohm 8 ohm 4 ohm 8 ohm 70V 100V
Current Draw Amps Amps Amps Amps Amps Amps
100VAC 50Hz 1.5 1.3 1.7 1.5 1.6 1.7
100VAC 60Hz 1.5 1.3 1.7 1.5 1.6 1.7
120VAC 60Hz 1.5 1.1 1.4 1.2 1.3 1.4
230VAC 50Hz 0.7 0.7 0.8 0.7 0.8 0.8
240VAC 50Hz 0.7 0.7 0.7 0.7 0.7 0.8
Rated Power
Bridged
Constant Voltage
4 ohm
8 ohm
4 ohm
8 ohm
70V
100V
Curre
nt Draw
Amps
Amps
Amps
Amps
Amps
Amps
100VAC 50Hz
3.9 3.6 4.4 3.9 4.4 3.3
100VAC 60Hz
3.8 3.6 4.4 3.9 4.4 3.3
120VAC 60Hz
3.1 2.9 3.6 3.2 3.6 3.0
230VAC 50Hz
1.6 1.5 1.8 1.6 1.8 1.5
240VAC 50Hz
1.5 1.4 1.7 1.6 1.7 1.5

A460H Specifications
Specification Table
Number of Channels
4
Maximum Rated Output
(Single Channel Driven):
4Ω, 8Ω 60W
Bridged 4Ω, 8Ω: 120W
Bridged 70V/100V: 120W
THD +N
20Hz-20kHz, at rated power: <0.3%
(all power ratings at rated
power), 20Hz to 20kHz
Frequency Response
+/-1dB, 20Hz to 20kHz
Dynamic Range
100 dB, 8 ohm reference,
20Hz to 20 kHz, unweighted
Input Sensitivity
0 dBu at rated power 4, 8 ohm and 70V modes
+1.6 dBu at rated power 100V mode
Amplifier Topology
Class D
Accessories included
Rack mount kit
Dimensions
:
Height: 1.75 Inches (44mm)
Width: 8.7 Inches (221mm)
Depth: 10.47 Inches (266mm)
Weight: 4.2lbs (1.91 kg)
Power
AC 100V-240V, 50Hz / 60 Hz
Environment:
Cooling Convection
Ambient Operating Temperature 32-104°F (0-40°C)
Humidity 95%, non-condensing
Rear Panel
Indicators
Per channel signal
Per pair protection mode
Per channel limiting indicator
Rear Panel Control
80 Hz HPF: On or Off, per pair
Mode selection: Standard or Bridged per pair
Constant Voltage selection: Per pair (bridge mode only)
Compliance:
UL and C-UL Listed (USA and Canada)
FCC Part 15B (USA)
CE Marked(Europe)
RCM (Australia)
EAC (Eurasian Customs Union) Pending
RoHS Directive (Europe)
CCC (China) Pending
KCC (Korea) Pending

IMPORTANT SAFETY INSTRUCTIONS
Lightning Bolt: Hazardous Live voltages present when this unit is in operation. Do not touch terminals marked with
this symbol while the unit is connected to live power.

do so will compromise safe operation of this unit

WARNING

WARNING – 100 Volt Speaker terminals marked with the symbol are Hazardous Live. External wiring connected to these terminals

WARNING
provide a protective earthing connection.
Disconnect Device
CAUTION

Intended for Installation and Service by Skilled Personnel Only:
CAUTION



CAUTION
• 
• 
Wall Mounting Instructions – Wall mounted products must be securely fastened to drywall or similar surface using a minimum of 4 wood

sheet metal screws located in metal studs or wood screws extending a minimum of ½ inch into wood studs.
Explanation of Graphical Symbols:
1) Read these instructions.



5) Do not use this product near water.





produce heat.
9) Do not defeat the safety purpose of the grounding-type plug.
A grounding type plug has two blades and a third grounding
prong.


replacement of the obsolete outlet.


where they exit from the product.

manufacturer.



building structure.

the cart and product combination to avoid injury from tip-over.

unused for long periods of time.





has been dropped.

INSTRUCCIONES DE SEGURIDAD IMPORTANTES

símbolo mientras la unidad se encuentre conectada a una salida activa de energía.


Aspas de ventilador en movimiento peligrosas Desenchufe el producto antes de realizar reparaciones y aléjelo de las
aspas en movimiento de los ventiladores.

1) Lea estas instrucciones.


4) Siga todas las instrucciones.



según las instrucciones del fabricante.





tercera punta con conexión a tierra.
La tercera punta se provee para su seguridad. Si el enchufe

electricista para reemplazar la toma obsoleta.


convenientes y el punto donde salen del producto.

fabricante.

base o 



la combinación del carro con el producto para evitar
lesiones en caso de una caída.

va a utilizarlo por largos períodos de tiempo.
14) Todas las reparaciones deben ser realizadas por personal





ha caído.
ADVERTENCIA 

ADVERTENCIA  están activas y son peligrosas.

ADVERTENCIA
funcionen correctamente para brindar una conexión a tierra de protección.
Desconexión del dispositivo – El enchufe de alimentación eléctrica se utiliza para desconectar esta alimentación y deberá poder accionarse
fácilmente.
PRECAUCIÓN

para las conexiones de los circuitos de telecomunicaciones.

PRECAUCIÓN



PRECAUCIÓN
códigos locales.
• 
• 
Instrucciones para el montaje sobre la pared




CONSIGNES DE SÉCURITÉ IMPORTANTES





en mouvement.

1) Lisez attentivement les présentes instructions.


4) Respectez toutes les consignes données.








la terre. Le connecteur est reconnaissable par ses deux broches








fabricant.

ou chariots capables de supporter le poids du produit et



avec précaution pour éviter de le renverser.








AVERTISSEMENT 

AVERTISSEMENT – Les bornes des haut-parleurs 100 V comportent le pictogramme signalant une tension dangereuse. Toute connexion

AVERTISSEMENT

Débranchement de l’appareil

MISE EN GARDE

).
Installation et interventions réservées au personnel compétent:
MISE EN GARDE




MISE EN GARDE

• 
• 
Consignes pour le montage mural


