EMT XSD-15
Not much information survives on the EMT XSD-15, but period directories identify it clearly. It is a professional stereo phono cartridge of moving-iron design. HiFI-Stereo (1977, p.80) listed it alongside the SP-12. The listing gives an elliptical stylus (0.2 × 0.7 mil), tracking force of 1 to 1.5 grams, and channel separation of 25 dB. The same source gave an output of 1 mV/cm/sec, a frequency response of 15-25,000 Hz ±3 dB, and a 15-degree tracking angle.
That is about all the hard documentation this model has. No production years, pricing, or user reception have turned up. The XSD-15 appears to have been a professional studio tool, which fits EMT's broadcast and recording background, but its exact place in the line is lost. One period enthusiast's comment in Sound Practices called the EMT cartridge "admirable in its ruthless efficiency," likely meaning the brand's general approach rather than this model alone.
- Type: Moving-iron (variable reluctance)
- Stylus: 0.2 × 0.7 mil elliptical
- Tracking force: 1–1.5 g
- Output: 1 mV/cm/sec
- Frequency response: 15–25,000 Hz ±3 dB
- Channel separation: 25 dB
- Tracking angle: 15°
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