I have a stock HU which features FM radio,cd, and cassette tape- I don't use the last two . I'm currently feeding the signal from my mp3 player to the FM radio using a small plug-in FM transmitter (there's no brand on it, but IIRC it's from Monster). However, the radio picks up intermittent static regardless of which of the 8 transmit frequencies I choose and the sound is degraded somewhat (even more than using the compressed mp3 format). For instance, radio reception cuts off somewhere around 15.5-16.5kHz, if I remember right.
Is there some way short of buying a new head unit to clean up, improve or otherwise hard-wire a signal source into the stock head unit? I considered the "cassette" option, but understand that aligning the cassette with the tape head is iffy.
On another note, I have one of the underseat subwoofers. Does this feed more power to the 4 door speakers than the HU alone, or does the amp inside the subwoofer only power the subwoofer speaker?
Thanks for any ideas,