Box for coaxials

[502CEC 10+ year member]

So I got a good deal on some polk and infinty coaxials, however they are to big for my door holes. I currently have 4 15's in a ported box tuned to 34 and my factory bose are keeping up surprisingly well. However I want the mids and highs to be louder. So instead of replacing my factory speakers I am thinking of just adding these coaxials in the back on top of my box. The question is, should the box for the coaxials be ported or sealed for best results? The speakers will have about 60rms to each. I planned on putting one of each speaker (Infinty Kappa 62.9i & Polk DB651) in each box and making 2 separate boxes, so ported or not ported or will it even make a real difference in the sq of the speakers. Sorry for the long post. Thanks for all replies.

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[Falcons 5,000+ posts]

sealed definatley. regular speakers dont even normally need a box (infinite baffle) but if you need to make one a tiny sealed box is the way to go.

 

[trumpet 5,000+ posts]

sealed definatley. regular speakers dont even normally need a box (infinite baffle) but if you need to make one a tiny sealed box is the way to go.

You have contradicted yourself. A tiny sealed box is going to kill midrange performance of a coaxial speaker. Better advice would be to sell the coaxials you have and buy speakers that fit in your stock speaker locations.

 

[Phoenix Risen 10+ year member]

not to mention running too many speakers can actually make things sound much worse due to cancellation.