I have these snared to a 600 watt 2 channel BOSS amp and they sound stunning! My application is an old rebuilding so I can't remark on how they fit anyplace since I needed to cut wholes for them and make custom mounts. They do get boisterous however, and stay mutilation free for any longer than is agreeable on my ears. Would purchase once more.

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http://soundexperts.org/best-6x9-speakers/