Polytron Big Band BB531KA Audio Kaset Deck Radio AM/FM - Restorasi & Modifikasi

Restoration and modification of a Polytron BB531K audio device featuring a cassette deck and an AM/FM radio player. Initially, it was only powered on with no sound output. Other functions include two microphone inputs with echo effects, RCA pre-amplifier input and output sockets, a wireless microphone, and a headphone jack. The tone control uses a 7-band graphic equalizer. At the owner's request, a Bass Booster Expander (BBE) module and a Bluetooth audio receiver module were added to this device. The power amplifier uses an STK4132II IC with a power output of 20W + 20W. Other videos:    • Technics SU-610 RS-TR212 SH-8045 Digital A...      • Funai FC-1280 Vintage Stereo Audio Cassett...      • Seico XO-801 Audio Kaset Tape AM/FM Receiv...      • Pasang BBE & Bluetooth Pada Polytron Bigba...      • Polytron Big Band BB635KM Audio Kaset Tape...   #polytron #vintage #cassettetape #cassetteplayer #homeaudio #restoration #retro #bluetoothaudio #restoration #bassboosted #jadul #cassettetape