Stereo far louder on the left

So, after installing some new speakers in my 03 TC I realized my speakers were far louder on the left side of the vehicle. Now it all makes sense as to why my sound system sounds like garbage. Because I put in new speakers I know it isn't the speakers (at least in the front, I didn't do the rear speakers yet). I'm kind of hoping this is an issue with my head unit and not really a possibility to be an issue with my wiring. I have it temporarily resolved by moving the balance almost completely over to the right.

Am I correct that this is most likely a head unit issue? I had planned on a new head unit in the future anyway... Thanks

Theres a setting on the head that lets you change the positions of the audio for the drivers seat, rear seats etc. I think it has to do with the RDS button.

Theres a setting on the head that lets you change the positions of the audio for the drivers seat, rear seats etc. I think it has to do with the RDS button.

I know its not that. That is the DSP button that I use a lot. Loved it on my Continental. Doesn't matter what setting it is on, left is far louder.

Not sure then.

Use the controls to isolate a single speaker at a time. (i.e. front left, rear left, etc.). One speaker may be blown out.

If that is the case you can try replacing any speaker that sounds distorted or low in volume.

Use the controls to isolate a single speaker at a time. (i.e. front left, rear left, etc.). One speaker may be blown out.

If that is the case you can try replacing any speaker that sounds distorted or low in volume.

I just finished replacing the front speakers. The rear speakers are supposed to be on their way. However, it seems like the whole right side is much quieter. I might just have to buy a new deck.

Does anyone know if the car has a separate amp from the head unit? I know my continental did. That sound system was much better and had more options though.