this happened to me once when i installed new speakers on my civic, it was because of a loose connection on one of the speakers, sometimes hitting the speaker area would get the speaker going again but i just rechecked the connections and it worked
Our stock head units have Bass Roll off so after a certain point the bass does not increase when the volume does, setting gains wont really help and yes an AudioControl LC2i with ACCUBASS will help.
Do you have the 7 inche touch screen? if so you can get hondahack and get android viper4android...
I used this tool
https://www.amazon.com/AUTUT-Automotive-Plastic-Polarity-Phasemeter/dp/B07MQ55QHL
And your DSP might have a phase function so you can just correct it there if some speakers are not on the same phase
Someone did itnthe switch and couldnt get the brightness down
https://www.civicx.com/forum/threads/i-added-the-2019-volume-knob-to-my-2017-ex-l.49064/
I say just buy a used one on ebay, they are totally not worth it new
If you are going to put alot of money in the sound system you should get a way better DSP
At lease a AudioControl DM810 quality DSP or higher
https://www.audiocontrol.com/car-audio/digital-signal-processors/dm-810/
Because not all DSPs sounds the same
does the AXDSPX-HN3 actually does summing of...
I actually used the NVX wiring kit which is reasonably priced for what it is but for you who is just installing a power sub you only really need a power and ground and fuse because the P300-10 take high level inputs and auto turn on so you dont even need a LOC or a remote turn on wire.
For...
https://www.sonicelectronix.com/item-43397-Rockford-Fosgate-Punch-P300-10.html
this place sells it BUT they are very hit or miss on actually having it in stock, I had a few issues with them but they are always like the cheapest reputable car audio online store, their customer service can suck...
Might as well tap the the accessory wire for the remote turn on too while youre at the back of the radio.
This will help you find which wire to tap on the radio
https://www.civicx.com/forum/threads/2016-17-ex-factory-radio-wiring-diagram-needed.9808/
But if your gonna just trap the rear...
buy a used on ebay they usually 200-300 and they are easy to replace
You can try maybe removing the radio and checking the two connections on the bottom of the screen in the back that might be the cause.
there are passive and active line output converter, the PAC SNI-35 is a passive so you dont need to power it.
The remote turn on has to be connected to the amp to let it know when to turn it on, i tapped the back of the head unit for that.
and not sure what you mean by hurt your speakers but 100...
Did they install the P500-12P correctly? are they using the smart turn on or the remote turn on?
Your car is a 2016 like mine and when I upgraded my sounds sytem I was testing with in car ACCESSORY mode and killed the battery and i bought a battery with a higher Cranking Amps, i think take your...