Shure SM82
A broadcast microphone with its own line-level amplifier built in, made for field reporters sending a feed back to the studio.
Overview
The SM82 is a cardioid condenser microphone. The usual handheld doesn't carry a line-level amplifier inside the body. This one does. Shure's own advertising billed it as "the long-distance hotline designed for broadcasting," a mic that could feed a telephone line or voice coupler and become, in the company's words, a complete remote amplifier/microphone with line-level output. For a reporter working a mile-long parade route or the far edge of a golf course, that means no mixer between the mic and the line. The mic is the front end.
The built-in peak limiter is the detail that matters most in practice. Shure's ad copy states the limiter kicks in at 100 dB SPL, preventing overload of the microphone's internal line amplifiers. The failure mode is familiar on remote broadcasts: a sudden loud source slams the electronics and clips the feed back to the station. The SM82 handles this with a self-contained limiter working before the signal ever leaves the mic body.
Power comes from an internal battery. That means no phantom power to negotiate with at the far end of a phone line. Shure also advertised the mic as built to hold up across "a variety of temperature, humidity and wind conditions." It reads like marketing, but it fits the job: outdoor remotes, not climate-controlled studios.
DB-Magazine (September 1975, p.19) covered the SM82 as a new product, describing it as a "super-rugged microphone" with its own built-in line-level amplifier, positioned specifically for broadcasting use with a telephone line or voice coupler. The same advertising language ran for years afterward — DB-Magazine (October 1982, p.11) and again (January 1983, p.19) — which tells you Shure kept the SM82 in the catalog and kept pitching the same core idea: get the story live, as easily as calling home.
The SM82 also turns up in one of the more famous pieces of Shure advertising of the era. The Rolling Stones' mobile recording studio, a complete studio in a van per the copy, was stocked with Shure microphones. The SM82 is named alongside the SM7, SM58, SM53 and SM56 as part of that kit. Studio Sound (September 1978, p.65) ran the same advertisement, listing the SM82 among the mics the Stones relied on for "consistent quality and natural sound." It is marketing, not an independent verdict, but it does put the SM82 in the same locker as the SM58.
The available documentation doesn't give frequency response curves, impedance figures, weight, original list price or production run. Anyone hunting a clean SM82 should check the battery compartment and confirm the limiter behaves. The internal electronics are the whole point of the design and the hardest part to service.
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