I'm running the MPAK 11 (600.4 and moto 602 speakers), I also have the ARC PSM. I talked to a tech at ARC and his recommendation was to set the factory HU bass all the way down and treble all the way up. Doing this and setting the amp to his recommended setting results in a lot more treble than I would like to hear and zero bass. I realize I won't get much bass out of these but I would at least like a more rich listenable sound. Anyone running a setup similar or the same have recommendations on how theirs is set up?

 

 

My gut is telling me that ARC is way deep in the weeds regarding this implied tuning recommendation.

T

 

I will say this..... I installed my PSM and set the gains with the hu at mid level on both bass and treble (meaning flat). Right out of the box it sounded better than line levelers. Arcs stock tune on the psm is not bad. Now that's not saying it doesn't need tuned. After tuning the psm, i like it and wouldn't go back. It allows infinite possibilities.

 

I didn't adjust the PSM, it supposedly has a default tune for the stock Harley HU.