Acoustic Research AR-5 Vintage Speakers. Condition is "Used". Local pickup only. Can arrange delivery or meeting within the San Francisco Bay Area. Can also coordinatewith a delivery service of your choice and arrangement. Please see photos for details. Estate Sale find. Serial numbers are nearly consecutive. Small chip on one corner. A couple of mounting holes were inserted. Tested and they sound great. I’m not an expert so I am uncertain of the details of sound measurements.