MG-IIIa (Rev. 2)


Main Details
Maker Magnepan Brand Jim Winey Designer
Form Factor Floorstanding
Signal Path Passive Hardware
Made In United States
Date Produced 1986-19??
(H × W × D)
Frequency Response 32Hz-40kHz ±3dB
Notes Serial number 062758 and above. Added non-inductive resistor in tweeter circuit to adjust for changes in resistance in the new element for the true ribbon.
Additional Specifications
Treble ¼"x55" True Ribbon 2.5µm Aluminum Foil
Midrange 170in² Planar-Magnetic (Single-Ended) Aluminum Magnet Wire on Mylar Substrate
Bass 620in² Planar-Magnetic (Single-Ended)
Sensitivity (20Hz-40kHz, Pink Noise) 83dB/W/m
Sensitivity (500Hz) 85dB/W/m
Impedance (Bass)
Impedance (Midrange/Treble)
Crossover Frequency Low Pass: 300Hz, High Pass: 500Hz, 3kHz
Crossover Slope Low Pass: 18dB/Oct, High Pass: 12dB/Oct Third Order, Second Order
Recommended Amplifier Power (RMS) >50W
Power Handling (RMS) 200W
Protection Fuse (3AG) 1.5A
Enclosure Type Dipole
Finish Solid Oak Frame Cloth: Off-White, Black or Brown Fabric
MSRP (1986) $1995
Connector: Banana
Description: Socket (Female)


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