Power Amplifier with Speaker

A versatile 10W mono power amplifier unit with integral 12W, 8? waterproof Mylar loudspeaker (87mm diameter) and variable volume control. Input can be from a signal generator, other sound source or mobile phone, tablet etc. The speaker can also be used in isolation from the amplifier, if required.
The unit requires a 9-12V power supply at 500mA, which can be from a standard lab power supply, via 4mm sockets, or from a d.c. plug top power supply.
As well as using the internal speaker, a pair of 4mm sockets are available for output to an external speaker and a switch allows the internal speaker to be switched off – ideal for use with a Rubens’ tube. These output sockets also allow for connection to an oscilloscope for monitoring the signal.
Music from a mobile phone, tablet etc. can be input via the 3.5mm jack socket on the front panel.