Review on Introducing the Upgraded Opti Pro 6.5” High Power Coaxial Speaker - Enhanced 400W Peak Power, 65Hz – 🔊 7kHz Frequency Response, 30 Oz Magnet Structure, 4 Ohm with Glass Fiber Cone and Butyl Rubber Surround - OPTI6PM by John Miranda

I am completely satisfied with the purchase of these speakers. They look solid, have a cool fiberglass cone and handle all the power my Autotek 4 channel amp can put out. distortion-free at the highest volumes and still sound good at lower levels. The frequency range is quite wide. I have a 65Hz crossover on my Pioneer 2 din head unit. They really compliment the rest of my system which consists of a 1200 watt Hifonics Class D mono amp driving a 1200 watt Acoustics Gothic Series subwoofer in a vented box. My Autotek 4 channel amp works with Renegade components installed in my front doors and of course Lanzars in the rear of my 99 Saturn SL. Limousine. I will tell you this is a loud system that packs a punch and is crystal clear at all volumes. people don't expect so much sound to come from saturn.