Although i've mod'd the stock amp and replaced speakers and the sounds improved, there is still noticeable distortion. Vocals and upper frequency sounds can certainly have a harshness. I repositioned the tweeters (not bouncing off the winshield) and that seems to help a bit, but there is still improvement to be made.

I'm looking for info to help diagnose the where the fidelity is worsening.

With stock amp:
Has anyone driven pink noise in their system and seen spikes in the frequency response besides the 50-70Hz bump? Any frequency response curves of the system? THD, IMD, or spectrum analysis?

With aftermarket amp:
Has anyone driven pink noise in their system and seen spikes? Any frequency response curves of the system? THD, IMD, or spectrum analysis?

With new h/u source:
Has anyone driven pink noise in their system and seen spikes? Any frequency response curves of the system? THD, IMD, or spectrum analysis?

If anyone has other data, experiences, or other thoughts regarding the tsx audio limitations, then I'd really appreciate hearing about them.

 

Perhaps one of these gems will take the harshness out!

http://www.butleraudio.com/tdb475.php

jeff