These speakers are in excellent shape. The specifications are as follows: freq. Recommended spl (dB) – 110, impedance nom. Ohms – 4/3.5, low frequency resonance 35hz, recommended min/max power 50-350 watts, dimensions 11″x15″x51.5, 153lbs. The item “Acoustic Research Classic 30 speakers (pair)” is in sale since Saturday, April 02, 2016. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Speakers”. The seller is “mouseis80″ and is located in Dayton, Ohio. This item can be shipped to United States.