MG-3.7 vs MG-20
The MG-20's sensitivity is 85 dB against the MG-3.7's 86 dB. Both share impedance (4Ω), high-frequency extension (40 kHz), and ways (3).
AI-generated product photo — not official manufacturer imagery.
LoudspeakersFloorstanding SpeakersDiscontinued
Estimated price (community-sourced)
$4,500
Around — community and catalog average, updates slowly
About the MG-3.7
The Magnepan MG-3.7 (also referred to as 3.7i in later iterations) is a floorstanding planar magnetic speaker renowned for its dipole design, delivering exceptional phase coherence, imaging, and transparency. It incorporates a true ribbon tweeter for seamless high-frequency integration, quasi-ribbon planar magnetic drivers for bass and midrange, and requires inward angling for optimal performance. Recommended for amplifiers over 60W due to its power demands, it excels in detail retrieval, dynamics, and soundstage while maintaining a nominal 4 Ohm impedance. Available in various wood and aluminum trims with fabric options. Successor models like 3.7x offer upgraded crossovers but the original remains a benchmark.
Specifications
Transducer Specifications
Driver and acoustic performance characteristics
- Sensitivity
- 86 dB SPL @ 1W/1m
- Impedance
- 4Ω
- Frequency Response
- 35 Hz - 40 kHz
- Power Handling
- 60W
- Min. Amplifier Power
- 60W
Speaker Design
Driver configuration and enclosure design
- Configuration
- 3-way
- Driver Count
- 3
- Enclosure Type
- open_baffle
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 610 × 1803 × 41 mm (W × H × D)
- Weight
- 30.5 kg (67 lbs)
Key Specifications
Sensitivity: 86 dB
Impedance: 4Ω
Frequency: 35-40000 Hz
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions