This Magnepan 1.6QR speaker set has been professionally refreshed by the manufacturer in 2021, ensuring its top-notch quality and performance.  Its charcoal and rosewood color combination adds a touch of elegance to its already impressive design. This speaker has some upgrades to further enhance the clarity, detail and imaging.  The high pass capacitors have been upgraded to Claricaps.  The steel input jacks have been upgraded to GR Research Pure Copper Tube Connectors.  New box from the upgrade is provided for shipping.   Free local pick up is also available. FI SPECSHEETBass Radiating Area442 sq. in.Quasi-Ribbon Tweeter Size2 x 48Frequency Response40 Hz - 22 kHz ± 3 dBPower Requirements100 watts RMS (8 ohms), normal; 250 watts RIMS (8 ohms), maximumSensitivity86 c1B (2.83 W500 Hz/1 M)Impedance4 ohmsCrossoverAcoustical, 600 Hz, Low-pass (quasi) 12 dB/octave, high-pass 6 dB/octave