JBL MI-632A (c. 1987)
The JBL MI-632A is a professional sound-reinforcement speaker from the MI series, sold in Japan at ¥195,000 per unit around 1987. It's a 2-way, 2-speaker front horn system in a floor-standing enclosure. A front horn loads the 38 cm cone woofer (the MI-15A), and a 2415H compression driver on a 2371 horn handles the highs. The crossover sits at 1.5 kHz.
It's a high-efficiency SR box. Sensitivity is 104 dB/W/m, program handling is 300W continuous, and frequency response is rated from 45 Hz to 15 kHz. Nominal impedance is 8 ohms. Dispersion is fairly controlled at 90° horizontal by 40° vertical. It weighs 45.4 kg and measures 630 × 830 × 440 mm, so it's heavy.
Beyond the core specifications, the documentation gets thin. The MI-632A appears to share its diaphragm family with the MI-634. The cabinet loads the woofer with both bass reflex and horn elements, a hybrid approach that suggests JBL was chasing efficiency and output rather than flat response. One Dutch-language source describes it as a "full-fledged speaker" when paired with its high-frequency horn, and it's been spotted in the wild doing duty as a live house main speaker in Tokyo. Used examples have appeared at Guitar Center. Empty cabinets with crossovers have been sold as pairs for roughly $160, which suggests the drivers carry most of the value today.
No production years, original US pricing, or period reviews have surfaced in the available record. JBL built it for the Japanese market during the late 1980s, and it still turns up in small venues and studios.
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