Thread: Rough tune on your EQ

Yea, before doing any EQ tuning you have to have the rest of your setup properly adjusted. Levels and x-overs.
If you play your music loud, try upping the front mids x-over point higher, try 100-120hz range. The higher the x-over the louder they can play (usually). It's almost always the bass that they try and reproduce that will start to distort the sound at higher volume levels. Also increase the slope to 12 or 18 dB/octave. They really don't need to be playing subbass. So start with a higher slope, turn off the sub and then turn up the music while playing with the x-over freq. Start low, at about 80Hz and listen for distortion with a few different songs or types of music. If you hear some at the loudest volume you will normally play, then raise it to 100 and see if that helps. If need be, try 120Hz. Usually you don't want to go too high like 150 or 200Hz as you will start to lose your midbass snap. So it's a compromise that you have to find.

Do you have a passive x-over between the mid and tweet or do they each have their own amp channel? Some passive x-overs have level adjustments to attenuate the tweeters. Let me know your mid/tweet setup.

The High pass on the sub is just a subsonic filter. If you want your bass to extend below 20Hz, then just turn the HPF off. If your sub can't play that low and you don't normally listen to music with low bass (pipe organs or speacialty CD's) then try raising it to 30Hz and 36dB slope. That will prevent the sub from wasting power and excursion trying to play frequencies that you aren't going to hear in a moving car anyway.

The low pass on the sub is a bit tricky as there is accurate and there is fun to actually listen to in a moving car. You'll need to play around with it. Your 63Hz and 12dB slope is OK. Sometimes raising the freq and increasing the slope can reduce the midbass (which will draw your ear to the rear) while still keeping the low bass you need. This can help keep the image up front where it belongs.