1 X 1500WATT CLASS-D AUDIO
AMPLIFIER BOARD–IRS2092
USER’S GUIDE
©
2004-2012 Sure Electronics Inc.
AA-AB31411_Ver1.0_Page 3
2.1 Power Connection
To power the amplifier board, use jack J10, J11, J12. Pay attention to the polarity when
connecting power supply.
TABLE 2-1 POWER CONNECTION
Connector Mark
Description
J10
+
PCB terminal for the positive of power supply
J11 GND
Ground
Terminal
Blocks
J12
-
PCB terminal for the negative of power supply
TABLE 2-2 Recommended Supply Voltage
Voltage Limitations
Current Requirement
±
60 to
±
80 V
15A
Note:
1. You’re suggested to use AWG16 power cord. The length of power cord must be
minimized. Increasing length of PSU cable is equal to increasing the distortion
for the amplifier at high output levels and low frequencies.
2. A pair of 75V 15A switching power supplies is recommended. The symmetrical
supplies must be applied and removed at the same time.
3. 20s interval is suggested before repower on to ensure that electricity from the
board can completely discharge. Or unexpected sharp POP will come up from
speaker.
2.2 Input Connections
You may use either the RCA connector J14 or terminal block J13 to input audio signal.
2.3 Output Connections
You can use PCB terminals J1 and J2 to connect speakers.
Note:
1.
Never connect more than one group of speaker to the audio output
2.
Refer to on-board descriptions for connection details.
2.4 Phase Setting and BTL connection
SW2 is used for setting output waveform – inverting or non-inverting. It’s for BTL output
of two amplifier boards.
TABLE 2-3 SW2 SETTING
K1 K2 Gain
Status(dB)
ON ON -
OFF ON
Inverting
ON OFF Non-inverting
OFF OFF -
Note:
1. Do not turn on K1 & K2 simultaneously; otherwise the U7 will be damaged.
2.
Turning off both K1 & K2 makes the audio input disconnection.
Chapter 2. Hardware Detail
