Originally Posted by
maxcichon
Are you using these:
Kappa 60.11cs - Infinity
@ 2 ohms? Maybe so. Though the Infinity Reference (2 ohm) I installed don't cause issues even trying to keep up to road noise.
Perhaps issues with the crossover?
If he's using those, he does not need tweeters, and with 2 ohms there AND what is probably another 4 ohm tweeter, no wonder the amp is getting mad! 2 ohms in parallel with 4 ohms is 1.3333 ohms.
If our amps are designed to work into two 8 ohm speakers, that's 4 ohms. 4 ohms to 1.333 ohms is quite a stretch, but I'm still almost surprised the amp is "tight" enough to object.