The 6" x 9" MAS size speakers are unique; with an inverted magnet construction; and the coaxially mounted tweeter housing helps with heat dissipation (Magnet relocated to the front of the speaker). Patent Pending design helps with thermal management for motorcycle applications to extract heat from the speaker through the front tweeter pod away from the saddlebag with ambient air. Diecast Aluminum tweeter housing draws thermal build-up away from the internal hidden neodymium speaker magnets. Traditional neodymium magnet speakers trap heat inside the saddlebag and that’s not what we wanted. You can say goodbye to damaging jackets or even worse speaker failure.Highlights:Manufactured with industrial grade materials optimized for harsh environmentsGlass fiber reinforced ABS frame for impact absorption and thermal stabilityImpermeable polypropylene cone is mechanically rugged and heat resistantMidrange Notch Filter included for OE pod installationCo-molded low-density santoprene surround chemically bonded coneTitanium dome tweeter resists corrosion with high strength-to-density ratioLow Mass Neodymium earth element magnets for maximum output1.25" oxygen free copper voice coil on thermally absorbent aluminum former1" titanium wide dispersion high output hemispherical dome tweeter2-Ohm for stock replacementIntegrated 6dB high-pass crossover protects tweeter from harmful frequencies92dB (1w/1m) SPL efficiency / 60-22kHz frequency response100w RMS power rat