TDA7293Pro is meant for professional use in converting
passive speakers to active. On board is a Balanced
Input with provision for adjusting the sensitivity
to dBu or dBV.
op amp is powered by it's own 7815/7915 voltage regulators.
An additional 9V 7809 regulator is assigned to power
the Output DC Protect circuitry. If harmful DC is
sensed at the output, a 9V relay will disconnect the
loudspeaker, thus preventing damage.
TDA7293Pro power output is 36W into 8Ω and 60W
into 4Ω. With this power, this module is suitable
to convert 2-way nearfield recording monitors to active.
Full Power into 8Ω
Square Wave into 8Ω
Output = 36W into 8Ω | 60W into 4Ω
Input Sensitivity = 1.0V RMS (Unbal) | 0.5V RMS (Bal)
Input Impedance = 20K
Rise Time = 4.0us at 10kHz Sq into 8Ω
Voltage Gain = 30dB
Power transformer = 20-0-20Vac
Supply Rails = +/- 28Vdc
= 4.0" X 3.5" (100mm x 90mm)
Double Sided | FR4
TDA7293Pro is one channel and is supplied
Unassembled. Two kits are required
complete the amplifier, the following are
1) a power supply consisting of a power transformer,
filter capacitors and a bridge rectifier
2) a heatsink for the TDA7293 chip amp
3) a metal case and the necessary connectors