I guess, the Speaker change is not helpful. The problem ist inside the poweramp or better the "Wonderfull Surround sound, managed by DSP".
My Solution: I don't like Surround Sound in my car. So i change the "Surroune Slider" in the Position "Stereo". Now i don't hava jumble of instruments. The Voice is coming from the Front. Also the Sound. The Backdoor Speaker are litte more quite, an a perfet "Rearfiller".
The Bass ist also better, in this Stereo-Mode.
But, no enough for me. Surprise. I have from the car before, an EXS DSP Amp and 2 GroundZero 165 cm Subwoofer . The Capri have an perfekt Space in the Trunk. In this Hole Now i use this DSP AMP for an additional Subwoofer, located in the trunk. In this Hole, i manufacture a Plat with this two Subwoofer. In the Explorer you can take a After market Subwoofer.
My old DSP-AMP has an Line-In. And this Line-In Signal ist stolen by the B&O Sub. 😉 The 12V Power is coming from the 12V Power Plug-in in the Trunk. This Plug-in is 1) fused by 20A. This ist enough for rd. 240 Watt. But the Power for sub is not ever 240 Watt, it's frequently Peak. And the AMP ist going on with the Power on from Ingnition.
I have messured my System. I adjust the Volume and the right Frequenz (what i like). Now it's a Perfekt match. The AMP is comming with the Remote-Unit, to adjust the Volume an 4 Pre-Sets to find the right Sound. But the best part is, i can change the Bass form the Headunit. Then this is change the Signal from the B&O Sub, and therefore from my additional Sub. Of course, is it not to for Volume Orgies, but for Beautiful Sound what i like. 😁😎
Puh! So far from my site. I hope you understand my Trouble-Englich.🤪
P.S. I like Really Surround-Sound only in my Homecinema 😅