The speakers are going to be muffled and blocked behind the seats. It would be best to incorporate a midbass or small subwoofer within that cavity to serve any justice in my experiences.Here in mauritius, don't think there's midbass. We have pioneer, deaf bonce and hertz midrange. Pioneer being less expensive but harsh at high volume. But why midrange given that full range with high pass frequency will cover all the spectrum from vocal to tweeters?