Distortion noise from tweeters

[plyer3 10+ year member]

Recently I've been hearing distortion noise from my tweeters. It's not engine noise or alt whine, i have already fixed that. Coming from my 6.5 type-r speakers in front. i checked all my grounds and even grounded the rca on headunit. any other suggestions?

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[AlterEgo99 5,000+ posts]

Anything in your system you change recently? Active or passive crossovers? Amp settings? A little more detail as to what your setup is at present going to the tweets may help us help you. //content.invisioncic.com/y282845/emoticons/cool.gif.3bcaf8f141236c00f8044d07150e34f7.gif

 

[plyer3 10+ year member]

nothing really recently

Alpine PDX-4.100, gain is set right and crossover is set around 120-160 i believe. High pass.

The rears are also on HP setting with gain on nom and crossover freq on nom as well.

RF T20001bd powering a FI BTL. LP, 160 freq, and gain set right.