Learn how to create a simple yet effective speaker amplifier using just cardboard and a few basic materials. This DIY project is perfect for enhancing your phone's audio without breaking the bank.

Make a portable audio simple amplifier. Homemade amplifier for speakers First cracks emerge in US-China trade truce The 9 biggest wastes of money at the grocery store U.S. economy is experiencing ...

Many electronic projects require the use of a small audio amplifier. Be it a radio transceiver, a digital voice recorder, or an intercom, they all call for an audio amp that is small, cheap, and has ...