The HHR CD player plays very good. I am sure the DAC inside and the analog section are well build. Anyone tried to upgrade for aftermarket speakers and how much did it improve the sound? I feel there is good potential there.

 

Yes many have replaced the speakers as they are a failure item for getting rusted connections. I did not put in expensive speakers but I did get a nice improvement in clarity and bass.

Do you have the Pioneer system with the subwoofer in back?

 

Search in Crutchfield web site they have a wide range of recommended compatible speakers for the base or Pioneer sound system.
Both my ‘07 and ‘11 have the the Pioneer system, very happy with both.

 

all I know is the audio system seem great but the speakers need to be refreshed. I did not know it was pioneer and I don't think I have any subwoofer.

Is thee any part/model number for that system by Pioneer? I would like to search more about it.

 

Take a photo of your RPO code sheet inside your glove box and post it , I can tell you what you have, or look in the driver’s side rear 1:4 panel for the sub woofer and pop the access plate for the tail lights see if the amp is there towards the front of the opening

 

Driver side tail light.

 

Correct, I did type that, driver’s side tail light access door

 

 

The top photo only more perpendicular please