According to the specifications below, these bookshelf speakers began production in 1984 but then were discontinued in 2013. They sound good, but are In fair condition. Open to offers. Description: Two-way, stand-mounted loudspeaker. Drive units: ¾" (19mm) ferrofluid-cooled, soft-dome tweeter, 6.5" (170mm) long-throw paper-cone woofer. Crossover frequency: 3.5kHz. Frequency response: 68Hz–20kHz, ±3dB. Sensitivity: 88.5dB/W/m. Nominal impedance: 8 ohms. Recommended power: 5–40W. Dimension: 13.5" (343mm) H x 8.25" (210mm) W x 7.75" (197mm). Weight: 9 lbs each (4.1 kg). Finish: Wood grain vinyl. Price: $150/pair (1984); no longer available (2013).