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Titanium Compression Driver Speaker 1500W - Black
Amazon.com: AudioPipe APHC-6256 5 Inch 400 Watt 8 Ohm Pro Compression Driver Tweeter Car Audio Speaker Amplifier Kit with Aluminum Horn, Black : Electronics
Horn speaker compression driver - TRM39A - SATEP - for alarm sirens / for industrial alarms / ferrite
Amazon.com: DS18 PRO-DKH1 Compression Driver with Aluminum Horn - 2", 640W Max Power, 8 Ohms, 2" KSV & Flat Wire Voice Coil - No Other Compression Driver Can Compare (Single) : Automotive