Corvair dash speakers offer you stereo sound from your original mono speaker location. We offer three different Corvair speakers and they all feature a bracket in order to mount to the original opening. The dual dash mount speaker is a plate that has 2, 3.5" speakers mounted to it. You have the choice between Custom Autosound speakers and Kenwood speakers. The other options is a dual voice coil speaker. The dual voice coil Corvair dash speaker is a bracketed, 4"x10" speaker with two separate tweeters on it. One tweeter is for the left channel and the other handles the right. We recommend the dual voice coil speaker because it has more surface area for mid-range response and more bass than the dual dash mount speakers.