Factory B&O Bass Roll-Off Solution

[SoundsGoodStereo]

Thanks, this is super helpful.
I’ll email you with what I’m hoping to accomplish with my Hertz spl rear door speakers. Although their higher efficiency improved things, I am now hoping to get more.

If you are adding an amplifier, ignore efficiency ratings. The SPL speakers are for very high volume, like the name states with very little regard to sound quality, just a FYI

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