This single Mission 701 speaker will produce clear, transparent sound when matched with a speaker of comparable quality. It features a stiff GC (graphite-carbon composition) mid-range/woofer which resists break-up with even the most demanding musical passages. Soft dome tweeter offers smooth highs. Nominal frequency: range 50-20,000 hz. Nominal impedence 8 ohms. Sensitivity: 89 db. Rear-ported Bass dimensions: 17.5" high X 8.5" wide X 11" deep. To audition it with a similar Mission speaker, send an email or phone 801 487-3047. Listing images, derived from the internet, show a pair of 701 speakers