- 5 X 7 Two-Way Speaker - Polypropylene Cone - A durable plastic-based material which exhibits lo
- 5 X 7 Two-Way Speaker - Polypropylene Cone - A durable plastic-based material which exhibits low mass for good transient response, rigid structural integrity for low distortion, and high internal loss for accurate sound reproduction without excessive "ringing". Withstands the extremes of the autosound environment well.
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