BZB Gear BG-AMP2X50 User manual

USER MANUAL
BG-AMP2X50
2x50W Class-D Amplifier w/ 5 Inputs

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Thank you for purchasing this product. For optimum performance and safety, please read
these instructions carefully before connecting, operating or adjusting this product. Please keep
this manual for future reference.
SURGE PROTECTION DEVICE RECOMMENDED
This product contains sensitive electrical components that may be damaged by electrical
spikes, surges, electric shock, lightning strikes, etc. Use of surge protection systems is highly
recommended in order to protect and extend the life of your equipment.

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Table of Content
Introduction...................................................................................................................4
Features........................................................................................................................4
Panel Descriptions......................................................................................................5
Front Panel.............................................................................................................5
Back Panel ..............................................................................................................6
Remote Control Description......................................................................................7
Application Diagram....................................................................................................8
Specifications...............................................................................................................9
Package Contents.....................................................................................................10
RS-232 Pin Assignment...........................................................................................10
RS232 and Telnet Commands................................................................................11
Maintenance ................................................................................................................12
Warranty Policy............................................................................................................12
Limitations of Warranty...............................................................................................12
Exclusive Remedies ......................................................................................................13
RMA Policy ...................................................................................................................13
Standard Replacement.........................................................................................13
Once you have obtained an RMA number ..........................................................14
Please note:..........................................................................................................14
Warranty Information (Second Year Assurance).................................................15
Mission Statement.....................................................................................................16

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Introduction
The BG-AMP2X50 is a compact class-D amplifier with 5 inputs, it features switchable stereo or
bridge output, and complete EQ adjustment and intuitive working status display. It integrates
easily in various analog to digital applications such as when used in collaboration
environments, lecture halls, conference rooms, classrooms, healthcare facilities and control
centers.
Features
Efficient 2x50 watts of power from the Texas Instruments amp chip
5 audio inputs: 2x L/R Stereo, 1x Mic (Mic/48V/Line), 1x SPDIF and 1x Coaxial
Switchable Stereo / Bridge output (2x50W@8ohms / 1x100W@4ohms)
6 EQ modes for choose: Normal, Pop, Classic, Metal, Jazz and Rock
Audio loop out supports cascade with another amplifier
Intuitive LCD screen for device status
Mic input supports audio mix with any of the L/R, SPDIF and Coaxial input
Multiple control modes: Push Buttons, IR, RS232 and TCP/IP
Easy volume adjustment via a rotary knob
Easy installation with 1U rack-mounting ears
No fan design, no noise
With over-temp protection circuit
Supports audio delay up to 256ms (Optional)

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Panel Descriptions
Front Panel
①LCD Display –On the Main Interface it shows status of the Input, Volume and Mix Mode
(ON/OFF). Rotate the “Volume Rotary Knob”can adjust the volume directly.
②IR Receiver Window - Receive IR signal from the remote control of BG-AMP2X50.
③Power Button –Long press (2 seconds) it to enter standby mode, and short press it to
wake up.
④Menu Button –Press to enter Input/Volume/Bridge Mode/Mix Mode set mode. The blinking
segment is the one can be changed currently, rotate the “Volume Rotary Knob”to change
the current selected segment settings, press “Menu”button again to confirm the change,
press “Esc”button to return to the previous menu.
⑤Esc Button –Press it to return to the previous menu.
⑥Volume Rotary Knob –Rotate it to adjust the volume.

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Back Panel
①TCP/IP Port –IP Control / LAN Serving
②RS232 Port –For control the BG-AMP2X50 thru computer or central controller.
③Optical Port –Optical digital audio (SPDIF) input.
④Coaxial Port –Coaxial digital audio (SPDIF) input.
⑤Mode Switch –Switch between Stereo & Bridge modes.
⑥4-Way Spring Terminal –To connect with two speakers.
⑦Power Input –30V DC.
Note: Make sure the unit is plugged into a working AC outlet and the DC plug is inserted
all the way into the amplifier.
⑧Rocker Switch –To Power ON/OFF the BG-AMP2X50.
⑨IR Extension –3.5mm stereo earphone jack, connect to IR receiver cable to receive the
IR form remote of BG-AMP2X50.
⑩Mic Mode Switch –Switch between “Mic”, “48V” and “Line” microphone input type.
⑪MIC Port –Microphone input.
⑫L/R Port –3.5mm stereo earphone jack for L/R audio input.
⑬L/R Ports –Left/Right channel of the L/R audio input.
⑭Audio Loop Out Port –3.5mm stereo earphone jack for cascade with another
BG-AMP2X50.

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Remote Control Description
Note: A small plastic tab extends out from the remote control battery compartment. This must
be removed before using the remote control.
Mute, Unmute,
Decrease, Increase
volume
Select the audio
input sources
Decrease/increase
the audio delay
value (Optional)
Select EQ modes
Mic Embed control
Bridge mode control
Power On the unit
Power Off the unit

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Application Diagram

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Specifications
Technical
Power output
2x50W@8ohms, 1x100W@4ohms
SNR
85dB
THD+ N
1%@1KHz 50W@8ohms, 1%@1KHz 100W@4ohms
Frequency response
100Hz to 20KHz (±3 dB)
Impedance
2-8 ohms
Input Impedance
>10KΩ
Max Input Voltage swing
5.6V
Input Channel Separation
90dB
Efficiency
90%
ESD Protection
Human body model —±15kV (air-gap discharge) & ±8kV (contact
discharge)
I/O
Inputs
1x IR Ext. (IR signal receiving, 3.5mm stereo earphone jack)
1x L/R (Analog audio input, 3.5mm stereo earphone jack)
2x RCA (Analog audio input, Left/Right channel)
1x MIC (Microphone input, 3.5mm stereo earphone jack)
1x Coaxial (Digital audio input, SPDIF)
1x Optical (Digital audio input, SPDIF)
1x RJ45 (IP Control / LAN Serving)
1x 9-pin D-sub (RS232 serial port)
Outputs
1x Loop (Analog audio loop out, 3.5mm stereo earphone jack)
1x 4-Way Sprint Terminal
General
Housing
Metal Enclosure
Dimensions
255mm [W] x 163mm [D] x 44mm [H] (Without the 8mm Rubber Feet)
Net Weight
1.4KG
Power Supply
Input: AC100 - 240V 50/60Hz
Output: DC 30V/5A (US/EU standards, CE/FCC/UL certified)
Power Consumption (Max)
130W
Operation Temperature
-4 - 176°F / -20 - 80°C
Storage temperature
-40 - 212°F / -40 - 100°C
Relative Humidity
20 - 90% RH (no condensation)
NOTE: All nominal levels are at ±10%.

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Package Contents
1) 1x BG-AMP2X50
2) 1x 30V/5A DC Power Supply
3) 1x Power Cord
4) 1x Remote Control
5) 1x IR Receiver
6) 2x Rack-mount Ears (19” Rack-Mountable)
RS-232 Pin Assignment
Baud Rate: 57600 bps
Data Bit: 8-bit
Parity: None
Stop Bit: 1-bit
Flow Control: None
NOTE: Use Straight Through DB9 Cable to connect the matrix with computer, DO NOT use
Crossover Cable (Null Modem Cable).
BG-AMP2X50 (DCE)
Remote Control Console (DTE)
PIN
Assignment
PIN
Assignment
1
NC
1
NC
2
Tx
2
Rx
3
Rx
3
Tx
4
NC
4
NC
5
GND
5
GND
6
NC
6
NC
7
NC
7
NC
8
NC
8
NC
9
NC
9
NC