Daily Archives: April 5, 2011

Refurbishing Vintage Sansui SP2500 Speakers (Crossover Repair)

I’m always keeping my eyes out for interesting vintage hi-fi speakers from the ’60s-’70s, and found a nice set of Sansui SP2500s on Craigslist. Produced between 1960 and 1974, these beautiful walnut speakers are solid and very heavy – definitely … Continue reading

Posted in Electronics, Projects, Vintage | Tagged , , , , , , , | 30 Comments

Showcase: Homemade 1930s-Style AM Radio Transmitter

Fellow radio hobbyist Jon the Grimm built this beautiful “homebrew” AM transmitter using tube technology, in the style of an original 1930s radio transmitter. Operating under Part 15 regulations, his transmitter has achieved a short range – perfect for feeding … Continue reading

Posted in Collections, Commentary, Radios and Tubes | Tagged , , , , , , | 6 Comments