Low mass poly injection cone body that delivers precision sound quality High flow ventilation stamped steel basket design Large butyl rubber surround for more accurate bass NOMEX / ROMEX spider assembly for linear cone travel and durability Shallow mount design for American or foreign cars and trucks Over 1" (30mm) mylar super tweeter both of which deliver an exceptionally high frequency for all ranges of music Authorized Dealer T-57 Manual.
pdf Specifications Diameter: 5" x 7" (140mm x 191mm)
Description: 2-Way
Impedance: 4 Ohm
Frequency Response: 50Hz - 20kHz
Sensitivity: 87dB
Power Handling: 400
Watts Grilles: Yes
Mounting Diameter: 4-9/16" x 8" (116mm x 204mm)
Mounting Depth: 2-5/16" (58mm)