Amazon.com: Pair of Audiotek 65C 6-1/2 Inch 2-Way Component Speaker Set with 1000 -Watt Peak Power 340 Watt RMS 170 Watt Per Speaker Frequency Response: 65-20,000 Hz : Electronics
Our Speaker Sound Tests: Frequency Response Accuracy - RTINGS.com
What is the frequency output of a standard speaker? - Quora