Kent King's Blog – November 2021 Archive (2)

I discovered something today that I had never noticed before. Background - I am working on an FM Phantom which has the later Jones plug connector. I just made a crossover cable with a female Jones plug to a standard Scott round plug to test the tuner with a "standard" amp. I was double checking my new connector and saw the 6.3v filament line on the amp I was working with (my working  set in the Stratford cabinet), had the CT grounded. The Jones plug amp with the FM Phantom was grounded on…

When the FM models were introduced in 1940, Scott also began offering a "4 unit" sound system. We've seen tweeter sets with the AW23 and the early Philharmonic sets (both use a Y-cable from the pedestal speaker to two tweeters). The 4-unit systems included a crossover box where you connected the bass speaker and two tweeters, and it also had a jack for an extension speaker. The crossover and 3 speakers constituted the 4-unit system, which sold for $29.50. Later units had a smaller crossover,…