To be honest, I was a bit puzzled when I read your EQ approach in the past, now that you explained you are trying to stimulate the sound effect of a heavily loaded automobile sound system, everything make sense immediately. I think this will apply to other readers as well.
Thanks for the tip; I'll be sure and mention this more often. I do mention it at least a few times in the original 43-minute video about my headphone system. Near the beginning I say, "...Sounds better than...the big car stereo I used to have a long time ago."
In that video when talking about Madonna's "Holiday" song, I say, "Listening to it this way, you can turn this world around, and bring back all of those happy days...of going cruising in your car with the trunk thumpin' and the smooth groove kickin'!"