what cone?

[listentoyes]

whats the difference in sound/performance with different cones ie poly/othe composites?

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[JimJ 5,000+ posts]

For subs? Very little to none, although some metal cone subs have failure issues when put under a lot of stress, and others are just plain built badly.

For midbasses/midranges, it will depend on what crossover frequency and slope you need...aluminum or magnesium cone mids have breakup nodes that generally require lower crossover points and/or steeper slopes than paper or poly cones will.