The heart of this amplifier module is a monolithic integrated circuit from SGS-Thomson, TDA7294. It is intended for use as an audio class AB amplifier in hi-fi applications. It has a wide voltage range and output current capability, enabling it to supply the highest power into both 4 Ohm and 8 Ohm loads. With the addition of a handful of parts and a suitable power supply, this module will deliver > 50W RMS into 8 Ohm @ 0.1% THD. HEATSINK NOT INCLUDED. User must supply a heatsink rated at 1.4 deg C/W.
Specifications (± 35V D.C. power supply) Output power : > 50W RMS, 4-8 Ω load ~ 80W into 4Ω max. ~ 60W into 8Ω max. Gain: 24 dB (30dB modification) Input sensitivity : 1.3V for 50W, 8 ohm 0.9V for 50W, 4 ohm (0.6V, 50W, 8Ω, G=30dB) Input impedance : 10kΩ Signal-to-Noise ratio : > 95 dB, (>105 dBA) Frequency response : ~ 20Hz - 200kHz, –3 dB Slew rate : > 10V/uS THD : < 0.01%, 1W-40W,1kHz < 0.1%, at 50W, 20-20kHz IMD : < 0.01%, 1W
