Sub doesn't sound as loud?

[endofdays89 5,000+ posts]

Ok, first i am going to give you guys my setting on my amp and head unit so you can understand this better.

Head unit:

bass boost: 0

Sub Crossover: 0

Sub Amp:

Bass boost: 0

Input Sensitivity: 2.2v because my head unit is 2.2v. ( about 30 percent)

Anyways, my alpine type r's will barely even move even on rap songs. I turn my volume to full tilt and it almost sounds like the subs don't exist. Does anybody know why the subs seems to be underpowered. I mean, its a type r. They should get pretty loud. but they don't.

Click to read more...

 

[zack39648 10+ year member]

wat

 

[endofdays89 5,000+ posts]

basically, my gain on my amp is set at 25 or 30 percent and the sub barely does anything. Should i turn the gain all the way up on my amp because i can barely hear the sub.

 

[zack39648 10+ year member]

do you have a DMM (digital multimeter) handy ??

 

[endofdays89 5,000+ posts]

yes.

 

[morgans432 10+ year member]

check your connections first before anything

 

[endofdays89 5,000+ posts]

i just did. Nothing is out of phase and everything is connected securely.

 

[teen 10+ year member]

yes, turn the gain ALL the way up. does the trick every time, especially on the type Rs because i mean after all it is a type R.

 

[endofdays89 5,000+ posts]

it says to keep it at 2.2 since my hu is a 2.2v

 

[walkychalky 10+ year member]

it says to keep it at 2.2 since my hu is a 2.2v

this post confuses me

 

[teen 10+ year member]

i wasn't being serious.

but seriously, you def. want your voltage higher than 2.2v.

its sqrt of wattage times ohms. thats the number you want your voltage at.

then volume at 3/4 on a 0db 55-75hz test tone and turn the gain up until you get the # you just figured out above. SW output on the HU all the way up and all artificial enhancers off or as low as possible.

 

[endofdays89 5,000+ posts]

this post confuses me

wait a second. i think i had my input sensitivity knob turned the wrong way. It is the opposite of most other amps i've used.

 

[endofdays89 5,000+ posts]

i just set the input sensitivity to 0.2v and it got much louder.

 

[Mxman38 10+ year member]

isnt that the highest the gain will go? lol

 

[shaneb 10+ year member]

not to thread jack...but you would recommend turning sw settin on head units all the way up?

in doing that would i bypass another artificial amplification or add artificial amplification (creating more distortion)