Rockford Fosgate T2T-S Power 1" Aluminum Tweeter Kit 6" - 6.5" Component Speakers What is the difference between

What is the difference between the M2D2-10I and the M2D4-10I

Preserves AM/FM radio functionality when upgrading antennas—the adapter's impedance matching ensures proper signal transfer between aftermarket antenna and factory head unit without reception loss or interference

System Type: Mid-Bass Driver

If you use the high-level inputs to connect the BassLink SM2 to the head unit

Rockford Fosgate T2T-S Power 1" Aluminum Tweeter Kit 6" - 6.5" Component Speakers What is the difference between1" Aluminium Dome Neodymium Tweeter Kit 75W RMS, Internal Mylar Phase Plug, Audiophile External Crossover with Protection and Bypass Resistor. 3 Level Attenuation. Product Overview The Rockford Fosgate Power T2T S is a 1" aluminium dome tweeter kit rated at 75W RMS designed for listeners who prefer the bright, detailed, forward high frequency character of an aluminium dome. The kit includes two tweeters with dedicated external crossovers, trim rings,