You people suck. 12 years later, I finally replace speakers.

[X53Jay4.8is]

Originally Posted by Ricky Bobby

Alright can I get some impedance advice here -

In a way I am worried going from 10 speakers of 8 ohm impedance to all being 4 ohm will kill the DSP amp over time - and my goal is oem+ with keeping the DSP amp.

Everything I read says that if you are going to lower impedance but the drivers are more efficient, it negates any extra amp draw since it is using power more efficiently? But I don't have a confirmation of this.

However, I am debating sticking with 8 ohm Dayton Audio woofers, and leaving the other 6 at a lower 4 ohm. Will this make a difference keeping 40% of the drivers at stock impedance levels? The 8 ohm Dayton woofers are 88.7 db sensitivity, while the JL components and 4 ohm Dayton woofers are 92db efficient.

I'm driving myself crazy trying to figure this audiophile shit out.

RB I think your over thinking this but your have to feel confident with this. BSW takes the impedence down to 3.2 ohms (when they used speakers built by Rainbow) on the earlier speaker sets and 4 ohms (MB Quart) on the later ones. Those BSW speakers have been running for quite some time in E53 X5s with no adverse outcomes.