I wish I knew more about this because I'd like to do this mod. ☹
I love my Jag, don't get me wrong, it's just got a LOT of treble when the top horn switch (i still have no idea what any of these are called/do to be honest) is down.
When it's up, there's so much low end it's unusable. I tried adding more bottom end via my equalizer pedal and it helped tremendously, but still...it sounds a bit too "nasaly."
Ah well. Guess I'll just have to deal.