brz subwoofer install
 

Well i installed a sub/amp in my brz. Used a line out connection to connect the rc inputs to the amp. Long story short the sub works/amp powers on. But it doesnt beat near as hard as it should. I tuned the amp to where it should be. And it still isnt beating real hard. What am i missing?

Stock HU? If so its only a 2.4v pre out. Get a loc and it will be banging then

Stock deck. Idk all the lingo. Whats a loc??

Line output converter. On your amp you should have a voltage in setting. Make sure that is on the low setting , should make it a tad better with proper gain settings

i have a line out converter hooked up. Thats how i ran the amp to the radio. The sub

does the amp have a switch for line output voltage that says 1-2v or 4-6 v if so put it on 1-2v also what amp is it?

i'll check on that tomorrow and let you know the model of the amp.

line out converter is your issue need higher voltage line out converter

put a line driver in between the amp and LOC if your amp doesn't have the sensitivity switch by the gains. or if the LOC has Pots turn them up about 75% of the way and then turn the deck up 75% and set those gains to the max unclipped level

Where did you put your LOC? Don't use the rear speakers - they have a high pass filter on them from the head unit. You need to get the signal from the front speakers (these wires are at the amp in the trunk).

i used vampire clips to run the lineout threw the front speakers