E83 and E85/86 DSP amps are exactly the same in hardware. They just change the outputs depending on coding.
The rear door speakers are used normally, just the trunk ones are missing due to the subs.
E85/86 coding has Front: High/Mid/Low and Back:High&Mid door only and Subwoofers (highpower)
E83 is Front: High/Mid/Centralbass (highpower) and Rear: Door High/Mid
The rear door speakers are used normally, just the trunk ones are missing due to the subs.
E85/86 coding has Front: High/Mid/Low and Back:High&Mid door only and Subwoofers (highpower)
E83 is Front: High/Mid/Centralbass (highpower) and Rear: Door High/Mid
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