door speakers

[nicecar]

Anyone ever have just the right door speaker not work? Before taking door card off was wondering if it could be the amp or head? Checked fuse and connections, left sub works fine. Sometimes the volume doesnt want to increase and have to turn treble down even though new dash speakers just installed its to tinney sounding Thanks in advance

[Cunningr]

Which system do you have more specifically? Could be poor connection, or bad channel in either the amp or hu. New speakers did you verify polarity? Best guess with no more info is hu or amp channel going out if it was working then just stopped. Would check the new speaking wiring polarities to that can cause strange issues.

[rexcramer]

Try checking the harness connection between the door and the car. I was having strange door issues and mine was full of water and corroded. There are +/-15 connections inside that plug. Apparently it is a known issue for wet climates.

[nicecar]

the dash speakers are new, no chance for reverse polarity....harness connections oem. I will check the door connection and then the amp. I will forego taking off the door card. Thanks, any easy test for the amp right channel? Does the amp only run the door subs?

[Cunningr]

Originally Posted by nicecar

the dash speakers are new, no chance for reverse polarity....harness connections oem. I will check the door connection and then the amp. I will forego taking off the door card. Thanks, any easy test for the amp right channel? Does the amp only run the door subs?

If you changed speakers always chance of reverse polarity by accident.

Anyway, the plug on the big plug on the amp has the several pairs of twisted wires those are the speaker wires. The violet color goes to the right door. This link has a diagram with the colors https://cai-store.com/pages/996-c4-amplifier-installation

The small connector coming into amp is the control line and line level from head unit.

Becareful on the large connector there is a power wire that is always hot.
To disconnect the large connector it has a slide motion while pulling best way to describe it.

BTW really easy to remove door cards, get a set of plastic trim tools.

[nicecar]

I did not think I could reverse polarity when they are plug ins that only go one way? I really appreciate all the input. I always stress on projects like door cards that are always so simple when done, I have changed my exhaust twice , and taken bumper off twice and I am still afraid of the plastic pieces!and any little project. Let me check the amp connections. Any advice on amp. access? Take the whole bracket or take th amp from the bracket? Thanks again!

[dghii]

You'll need the pinouts but one way to check connections is to disconnect the Amp connector and locate the correct pins for the right speaker. Take a 9V battery and briefly touch it between the +/- speaker connections. You will hear a 'pop' from the speaker. Polarity does not matter and you will not damage your speaker. If you hear a pop, your issue is amp or head unit. If you don't hear a pop, its time to trace the wire to the speaker.

[dghii]

I want to make sure you understand that revering polarity will have no effect on weather a speaker will work. It should still have sound output.

You need the amp pinouts. I’m sorry I don’t have them. You can jumper speaker outputs from left to right, even with the amp connected.