Just installed the pbr300x4 with just 2 channel setup with Polk MM 6.5's. I have the gain set around 5, All Pass,Kenwood KMR-M322, Amp install kit etc... To me it sounds ehhh, lotta highs with alil mid bass. EQ on Head unit is to confusing so i have it set at one the preset guys. I have all the wiring ran for the RF speaker lid kit that is on order. Maybe its the 6.5's im not used too IDK, I had a bagged softail deluxe with polk 6x9's, kicker pods and cheap kenwood amps and it sounded way better.

2011 FLHX

 

Which Polks are you running?

 

MM1 6.5 marine grade blah blah blah

 

I need the actual speaker number. MM651 or MM652?

 

Sorry bout that, MM652

 

Ok they're the 4ohm version which is what you need with that particular amp because it's only 4ohm stable. Now comes the part you're not gonna wanna hear. The amp is junk bro. It's way outdated and underpowered. You can tune till you can't tune anymore and you'll never get those speakers to sound right with that amp. I know it's probably not what you wanted to hear but you need a better amp.

 

Yeah thats what I figured lol,,,Fit nice in the batwing!!! Suggestions on a 4 channel?

 

The Soundstream pn4.1000 is an awesome budget amp. Get up with Badd Azz Bikes and get you an amp mount and the amp install will be gravy.

 

Good lookin out!!!