Sorry I can't help you, I know there's some older posts on here somewhere about adding in bluetooth.
Welcome to the forum, there's nothing better than working on vintage audio equipment.
Welcome!
Welcome to the forum!
There's a cool photo on the back cover. [ATTACH] [ATTACH] [ATTACH] [ATTACH] [ATTACH] [ATTACH] [ATTACH]
Alex Chenyak posted the entire Telefunken Boombox Catalog from 1980 over on archive.org, thanks Alex! It looks like Telefunken went all in with a...
Telefunken HiFi Studio 1 from 1980 [ATTACH] [ATTACH] [ATTACH] [ATTACH]
Dual HiFi-Microset 450 from 1980 [ATTACH]
The Micronic Suitcase Boombox from 1980 [ATTACH] [ATTACH] [ATTACH] [ATTACH] [ATTACH]
Some more specs from 1978 [ATTACH]
Blaupunkt Derby City from 1978 [ATTACH]
Blaupunkt Derby Holiday from 1978 [ATTACH]
Blaupunkt Derby Carrera from 1978 [ATTACH]
Blaupunkt Derby Master from 1978 [ATTACH]
Blaupunkt from 1972 [ATTACH]
Blaupunkt from 1967, out of thier catalog. [ATTACH]
It's official, Blaupunkt was one of the first boombox makers! Blaupunkt Marimba CR from 1969 [ATTACH]
Blaupunkt Bongo CR and Bari CR from 1972 [ATTACH]
Blaupunkt Diva CR from 1974 [ATTACH] [ATTACH] [ATTACH]
Blaupunkt Bongo CR from 1974 [ATTACH]
Separate names with a comma.