Uploaded October 2023 | Updated September 2026, 3 weeks ago
This Sony CFD-S40CP boom box from 2001 plays AM/FM Radio, Cassette, Compact Disc, and MP3 files on a CD. But no Bluetooth, or even the line inputs that would allow us to add it via an external adapter. In this video, we make hardware modifications in order to add "stealth Bluetooth" capability to this 22 year-old boom box without sacrificing any of its existing features. Along the way we hit a couple of snags, but the answers to them were easily found with a little luck and Google searching.
#boombox #bluetooth
0:00 It Does a Lot of Stuff!
0:22 Inexpensive Bluetooth boards
0:42 Missing Aux In
0:55 Tech Style - the 1980s vs the 2000s
1:19 Disclaimer and History
1:44 Disassembly
3:01 Determining a Course of Action
4:06 Injecting signal into the Tape connector
4:34 First Problem - Muted Sound
5:42 Solution - DPDT Switch
7:05 Second Problem - Bluetooth Noise
7:31 Solution - 5V DC to DC Converter
8:01 Demo and Conclusion
This Sony CFD-S40CP boom box from 2001 plays AM/FM Radio, Cassette, Compact Disc, and MP3 files on a CD. But no Bluetooth, or even the line inputs that would allow us to add it via an external adapter. In this video, we make hardware modifications in order to add "stealth Bluetooth" capability to this 22 year-old boom box without sacrificing any of its existing features. Along the way we hit a couple of snags, but the answers to them were easily found with a little luck and Google searching.
#boombox #bluetooth
0:00 It Does a Lot of Stuff!
0:22 Inexpensive Bluetooth boards
0:42 Missing Aux In
0:55 Tech Style - the 1980s vs the 2000s
1:19 Disclaimer and History
1:44 Disassembly
3:01 Determining a Course of Action
4:06 Injecting signal into the Tape connector
4:34 First Problem - Muted Sound
5:42 Solution - DPDT Switch
7:05 Second Problem - Bluetooth Noise
7:31 Solution - 5V DC to DC Converter
8:01 Demo and Conclusion
