High power, hi-fi quality class AB audio amplifier module using a TDA7294 IC. This amazing little IC was designed for use in high quality hi-fi applications and has very low noise and distortion, wide bandwidth and good output current capability.
It provides an impressive 50W RMS into 8 Ohm or 82W RMS into 4 Ohm with only 0.1% THD.
Mute and Standby are brought out to connection pads on PCB. IC has internal short circuit and thermal protection, so is quite robust.
Space is provided on the PCB for mounting a 1.4° heatsink (not provided).
All components including IC insulation bush, screws, nuts & washers and TO-3 silicon-impregnated insulating washer are provided. Heat sink, speaker, cables and ±30V power supply not provided.Specifications
|Input Voltage||±24 - 36V (see documentation for details)|
|Power Supply||3186 with a suitable mains transformer|
|Input Sensitivity||1.3V (50W into 8 Ohm)|
|Input Impedance||10K Ohm|
|Freq. Response||16Hz - 100KHz|
|Output Impedance||4 - 8 Ohm|
|Output Power||50W into 8 Ohm (0.1%THD)|
82W into 4 Ohm (0.1% THD)
|S/N Ratio||105dBa (1W/8 Ohm)|
|THD (40W into 8 Ohm)||0.002% (1kHz)|
0.04% (20Hz - 20kHz)
|Board Dimensions||84x83mm (heatsink area of PCB is 37x83mm but can overhang if required)|
|Board connections||Solder pads|
|Product Formats||SELF-ASSEMBLY Electronic Kit (KT) or|
PRE-ASSEMBLED Electronic Module (AS) Product Formats Info
TDA7294 IC Data Sheet
Amplifier Power Supply General Advice