07-20-2014, 02:41 PM
Some manufacturers made it a practice to add screening or gauze material to the speaker basket area behind the cone. This kept debris out of the back side of the speaker and gave some degree of protection to the speaker cone along with the front grill cloth. Hopefully people would not make a practice of poking around inside their radios. Unfortunately many early radios had no back cover at all.
There were very few speaker arrangements that incorporated any sort of enclosure in the early years of radio. The appearance of Altec speaker/enclosure combinations for theater sound systems were an early example of bass reflex enclosures. You can do an internet search on loudspeakers and find a wealth of information on the subject.
Joe
KC5LY
There were very few speaker arrangements that incorporated any sort of enclosure in the early years of radio. The appearance of Altec speaker/enclosure combinations for theater sound systems were an early example of bass reflex enclosures. You can do an internet search on loudspeakers and find a wealth of information on the subject.
Joe
KC5LY
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