amperes electronics
We Are A Trusted PA Solutions Provider Since 1999
Standby Amplifier Changeover Unit
AX3800 MKII
8 Duty / 1 Standby Auto Amplifier
Changeover
Highlights
AX3800 MK II is an improved version from its predecessor, offering greater flexibility and simplicity for amplifier fault changeover setup including cascading 2 units for a single standby power amplifier to serve 16 duty units.
​
With new circuit, amplifier fault detection period is shortened remarkably to initiate faster response for a changeover as well as channel recovery.
​
Other familiar features are including the priority changeover to avoid overloading, pilot tone generation at intervals to reduce workload of amplifiers and buzzer alert for fault detection. RS485 port is available for remote monitoring at central system.
8 duty / 1 standby, Cascade to enable 16 duty / 1 standby
Priority changeover and overloading protection of standby amplifier
RS485 and dry contact for external monitoring
Features
-
Cater for 8 duty and 1 standby
-
Expandable to 16 duty and 1 standby
-
Built in Pilot Tone, transmit at intervals and senses at sequence to protect amplifiers
-
Overloading protection for standby amplifier
-
Prioritized changeover
-
Short detection time from 7 seconds
-
Fast recovery time
-
Changeover at inputs and outputs ; suitable for matrix setup
-
Input link switch for easier source connections
-
Channel isolation switch for unused channel
-
LED status monitor
-
Buzzer for fault detection with on/off switch
-
RS485 data port for remote monitoring
-
Fault dry contact
Technical Specifications
Operating voltage
Power consumption
Standby power
Input signal
Input impedance
Audio output gain
Pilot tone intervals
Pilot tone frequency
Detection line
Detection level
Failure detection
Failure recovery
Zone load rating
Status LED
Changeover alert
Changeover section
Dimensions (WxHxD)
Weight
​
24V DC
2.5W ( 0.11 A )
2.3W ( 0.95 A )
8 Ch balanced line
10 K Ohm
Unity
8 seconds / ch
20 kHz ( +/-5% )
70 / 100V rms
5V rms min
20 secs max
20 secs max
500W 100V
Normal, Fault, Changeover
Buzzer with switch
Input and Output
482 X 44 X 180 mm
3.55 kg
Documents
Catalogue
Instruction Manual
ACAD Image
Version 1.00
Updated : Apr 2022
Refer to product brochures for detailed specifications
Front and Rear Views
Cross References
The predecessor to this version which has been discontinued for a more enhanced version - mk II
8 duty / 1 standby manual changeover unit, which performs standby amplifier changeover via front switch or automatically if used with QP or QD power amplifiers, activation through dry contacts
Application Schematic
