New sub and amp issue

[PWNED 10+ year member]

For the Deck i have an Alpine 9884. For the amp i have a Kenwood KAC-9104D rated at 500rms at 4ohms/900rms at 2ohms. THe sub is a 10inch Kenwood KFC-W2511 rated at 300rms. At 2ohms thats good enough for an Alpine type R and if it doesnt push a kenwood then something is wrong. Dont get me wrong the kenwood hits pretty hard its just maxed out.

The amp is set at 80 for low pass freq/bass boost at 0/and the input sensitivity maxed all the way/ISF off/Phase set at 0. I have my deck set at 15 which is the max for subwoofer level and my bass at 2. The sub should of been blown by now putting up the input that high. I was going to turn up the input just before it distored but i cant get it to distort what so ever. My radio has 2v pre amps. If i were to have 4v pre amps would it be that much of a differance?

http://www.sonicelectronix.com/item_11795_Kenwood+KAC-9104D.html

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[GMCJimmyslt2000 10+ year member]

uhhhh? english maybe

 

[PWNED 10+ year member]

Explained clearly as possible. Supplied a link to the amp if someone wanted to see what controls i am talking about.

 

[PWNED 10+ year member]

Forgot to mention the sub is a 4ohm if that matters.

 

[PWNED 10+ year member]

I did a little research on my head unit online. The owners manual isnt very helpful. I held the center button and put loudness on. Then i pressed the inprint sound setup button and put the HPF at 80. That semed to help alot So i was able to turn the input sensitivity down.