Speakers would be the next thing. no matter what else you put in they still have to play through the speakers, so if they suck it'll still suck. After that go with an amp for the speakers and if you have the cash a second amp for bass and some subs, or do those down the line.
hey man i think you should go with speakers next, then subs, and amp, and then if you have extra cash get the amp for mids and highs, look at kicker sub and amps man, they pound hard and they are clean
I replaced the speakers first. If you add more bass with subs, and don't upgrade your mids and highs, then you won't hear any of the words, it will be solid bass. If you need some ideas look at my system. It should be posted by the time you read this. Also, feel free to make comments about my system too.
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