I have non-nav non-DSP. I replaced the door speakers but I assume they are crossed over somewhere else because they are very 'mid.' There's really no bass, so a sub is in the future. Right now, however, I'm looking into improving the high frequencies. I believe there are a pair of tweeters on the doors, but between the dash and the windshield there are two grills which I believe are speakers. Are these ALSO 1" tweeters or some other kind of speaker? I'm not finding anything on Crutchfield, etc.

Thanks!