Acoustic Research M3
Documentation on the Acoustic Research M3 is thin. What survives suggests it was a compact two-way bookshelf speaker from the early 1990s, when AR was making a wide range of small and mid-sized acoustic-suspension designs. That is as far as the confirmed record goes.
The one solid source is an Audio equipment profile (January 1992, p.70). It listed the M3 as a two-way acoustic-suspension system with a 6-inch cone woofer and a 3/4-inch soft-dome tweeter. The M3's specifications as reported in Audio (January 1992, p.70) included a frequency response of 65 Hz to 20 kHz and a nominal impedance of 8 ohms. The crossover point was 3.6 kHz. The rated frequency response was 65 Hz to 20 kHz (+0, - 3 dB), with a nominal impedance of 8 ohms (5 ohms minimum) and sensitivity of 88 dB at 1 meter with 2.83 V rms applied. Recommended amplifier power was 10 to 100 watts per channel. The cabinet measured 10⅝ inches high by 7¾ inches wide by 11¼ inches deep, finished in charcoal-gray vinyl wrap. Beyond this listing, the M3's history, pricing, and reception are not documented.
Known Specifications
- Type: Two-way, acoustic-suspension
- Drivers: 6-inch cone woofer, 3/4-inch soft-dome tweeter
- Frequency response: 65 Hz – 20 kHz (+0, −3 dB)
- Crossover: 3.6 kHz
- Impedance: 8 ohms nominal, 5 ohms minimum
- Sensitivity: 88 dB at 1 meter, 2.83 V rms
- Recommended power: 10–100 W/channel
- Dimensions: 10⅝ × 7¾ × 11¼ in (H × W × D)
- Finish: Charcoal-gray vinyl wrap
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