I don't know if it would manifest itself in this way but could it be a phasing problem? Have you verified all the speaker wires are connected to the correct polarity and channel?

On one of the speaker brands I am using the speaker terminals do not have the polarity marked on them. I had to use the old battery trick where I took a small battery (D cell or something like that) and touched it to the terminals with a jumper wire. When the speaker cone moved out I knew that the terminal with the + side of the battery on it was the positive one.

Also one time my setup sounded weird after some rework so I got my phone out and got a left/right test video playing on YouTube and found that I had two of my six speaker wires reversed at the amp.

Just random thoughts.

 

Gains, crossovers, tuning?

T.

 

That was my next thought too T as that amp is a monster for 2 channel.

 

Yea. I've tried all that. Gains are good. Speakers are marked so they're good. Only does it sitting on bike going down the road.

 

I thought maybe the hu but have that all set good.

 

Pull the seat and check the battery terminals as you say it only happens sitting on the bike.....

 

What do you mean when u say good? Crossovers? All pass? Are u running LOCs?
Gain volts? Polarity?

Those speakers should be hammering ur ears with that amp.

T

 

i thought of that but if it was the cables. Wouldn't the amp not work then?

 

 

Running on ap. No loc. Using rca's. The amp has a clip indicator which I lit then backed off a bit. Like I said it's f'ing frustrating to the point I'm considering just ripping the hu and amp out and going back to factory