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The Spatial Audio Lab M3 Triode Master is a two-way, dynamic open-baffle loudspeaker with controlled directivity. It uses two 15-inch paper-composite mid/woofer drivers and a coaxially mounted 1-inch M35 dipolar compression driver. The speaker has an in-room frequency response of approximately 32 Hz–20 kHz (±3 dB), sensitivity of about 93–95 dB, and a nominal impedance reported as 16 ohms with a low phase angle. Its narrow open-baffle enclosure measures approximately 42.5 inches high, 17–17.5 inches wide, and 2.5 inches deep. The design is intended for use with low-powered amplifiers, including suitable tube amplifiers, and is known for broad, controlled dispersion and an expansive soundstage.
Driver and acoustic performance characteristics
Driver configuration and enclosure design
Size, weight, and appearance
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions
Estimated price (community-sourced)
Around — community and catalog average, updates slowly
The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The Spatial Audio M3 Turbo S's sensitivity is 94 dB against the Spatial Audio M3 Triode Master's 93 dB and its impedance 4Ω against 16Ω. Both share low-frequency extension (32 Hz) and high-frequency extension (20 kHz).
The Super Eclipse's sensitivity is 92 dB against the Spatial Audio M3 Triode Master's 93 dB, its impedance 14Ω against 16Ω, its low-frequency extension 28 Hz against 32 Hz, and its ways 3 against 2.
The 4365's impedance is 8Ω against the Spatial Audio M3 Triode Master's 16Ω and its low-frequency extension 35 Hz against 32 Hz. Both share sensitivity (93 dB) and woofer (15").
The Founder 100F's impedance is 8Ω against the Spatial Audio M3 Triode Master's 16Ω, its low-frequency extension 26 Hz against 32 Hz, and its high-frequency extension 23 kHz against 20 kHz. Both share sensitivity (93 dB).
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