SoundQubed HDS Series 5x7" Coaxial 2-way Speakers (Pair) 1001-1500 78 in cutout diameter specifies

78 in cutout diameter specifies the mounting hole required for installation

000 Hz — covers subsonic to upper bass frequencies for flexible subwoofer integration and tone shaping

The drop-in design reduces installation complexity

With the included fast connector

SoundQubed HDS Series 5x7" Coaxial 2-way Speakers (Pair) 1001-1500 78 in cutout diameter specifiesSoundqubed HDS Series Coaxial Speakers! The HDS Series has stood for, Heavy Duty Street Series, since day one. This is exactly what we expect from the HDS coaxial series speakers. These speakers provide the ability to upgrade your current stock door speakers, to something that can handle more power, look good, and do it all while maintaining a budget. This is Soundqubed's entry level coaxial speakers. We do offer a more robust, larger power handling