Quote:
Originally Posted by TAKECLEAR_86
Bass still isn't as strong as it was before the Hu swap.
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Assuming that the factory amp is operating normally, this almost sounds like a speaker phasing problem especially after speaker connections have been modified. Example: If you have left and right speakers they should both move inwards and outwards at the same time. If the plus and minus wires on just ONE side are inadvertently reversed now one speaker will be moving outwards while the other one is moving inwards. Instead of the sound waves from the left and right adding together and reinforcing each other they are now 180 degrees out of phase and cancelling each other. This is most noticeable at lower bass frequencies with the low notes sounding "weak". The effect is not as noticeable at mid and high frequencies except that the system just sounds "not right" or downright bad.
Try this: Play a recording that is known to have a good bass line. Use the tone controls or EQ to eliminate as much of the mid and high frequencies as possible. Make a mental note of how loud the bass is and then use the balance control to shift everything to either full left or full right. If the bass sounds better/fuller/louder with the balance all the way to one side and weaker/quieter with balance back to center/normal there is probably a phasing problem.
I installed a Pioneer AVH-ZL5150 HU in my 2017 860SE Halo and it works well. Perhaps you've seen the following thread. There is a wealth of information collected in it.
https://www.ft86club.com/forums/showthread.php?t=128548
Just my two cents (and 50 years of experience).
