3-channel amplifier 60 watt

Description

This 2.1 amplifier module is built around three power ICs: a TDA2050 for the channel dedicated to the bass and two TDA2030s for the stereo channels. The arrangement delivers 32 watts for the subwoofer and 18+18 watts for the main speakers, a balanced answer for small and medium-sized audio systems.

The audio input is a 3.5 mm stereo jack, compatible with most sources such as smartphones, PCs or MP3 players. Three potentiometers set master volume, bass emphasis and treble level independently, giving direct, immediate control over the sound.

The board also carries a regulated 12 Vdc auxiliary output rated 1.5 A, useful for powering external devices such as preamplifiers or small players, which simplifies the system wiring. The aluminium heat sink supplied keeps temperatures under control even during prolonged use.

Power calls for a transformer with a 12+12 Vac secondary, preferably rated 50 VA. The compact size of the board (135×60 mm) and its modest weight (230 g) make it easy to fit into enclosures or DIY projects.

General Features

• ICs used:
  • TDA2050 (bass channel)
  • 2x TDA2030 (stereo channels)

Inputs and Controls

• Controls:
  • Master volume potentiometer
  • Bass adjustment potentiometer
  • Treble adjustment potentiometer