Sub/amps, custom fabrication finished
#1
Thread Starter
Instructor
Sub/amps, custom fabrication finished
For those that may have seen my thread posted several months ago with some of these pics bear with me. I finally found time to finish everything and just wanted to show the finished product.
#2
Looking super nice. Hope you can help out. I'm stuck with wiring subwoofer. My subwoofer is weak. The boom is weak.
My current wiring for aftermarket subwoofer is picture "wiring #1 sub.jpg"? I didn't use the post wire that run to the OEM subwoofer in the rear deck. Is that why my aftermarket is weak? Or, I should be wiring like picture "wiring #2 sub.jpg" and using harness metra 72-7800 so I don't need to cut OEM subwoofer in the rear deck?
Thank you.
My current wiring for aftermarket subwoofer is picture "wiring #1 sub.jpg"? I didn't use the post wire that run to the OEM subwoofer in the rear deck. Is that why my aftermarket is weak? Or, I should be wiring like picture "wiring #2 sub.jpg" and using harness metra 72-7800 so I don't need to cut OEM subwoofer in the rear deck?
Thank you.
#3
Thread Starter
Instructor
Looking super nice. Hope you can help out. I'm stuck with wiring subwoofer. My subwoofer is weak. The boom is weak.
My current wiring for aftermarket subwoofer is picture "wiring #1 sub.jpg"? I didn't use the post wire that run to the OEM subwoofer in the rear deck. Is that why my aftermarket is weak? Or, I should be wiring like picture "wiring #2 sub.jpg" and using harness metra 72-7800 so I don't need to cut OEM subwoofer in the rear deck?
Thank you.
My current wiring for aftermarket subwoofer is picture "wiring #1 sub.jpg"? I didn't use the post wire that run to the OEM subwoofer in the rear deck. Is that why my aftermarket is weak? Or, I should be wiring like picture "wiring #2 sub.jpg" and using harness metra 72-7800 so I don't need to cut OEM subwoofer in the rear deck?
Thank you.
#5
Sorry to hi-jack you super nice setup/.
Hope I understand what you mean. All wire I ran are post-wired which are the 18pin harness. The Pre-amp is a separate harness that has 24pin. Pre-amp harness not have subwoofer wire.
At Pic #1, the harness I use is a Post-Amp. The post wire subwoofer are red and white. I cut that wire. That cutted wire become 4 wires, right? The wire that stuck to the harness was connected to Fix86. The wire that I drew saying "not use" was just taped out. This mean that the OEM subwoofer was unplugged and not use. A new wire just run from JL subwoofer straight to aftermarket Amp. With this set up, my subwoofer was weak.
I was wondering, maybe, I need to do like picture #2? The post wire that label as "not use" should go to the aftermarket amp. And the JL subwoofer would wired to harness in the rear deck.
For example, like front/rear speaker: the amp speaker wire would tapped to the other end of the cutted post wire? right?
Hope you understand.
Hope I understand what you mean. All wire I ran are post-wired which are the 18pin harness. The Pre-amp is a separate harness that has 24pin. Pre-amp harness not have subwoofer wire.
At Pic #1, the harness I use is a Post-Amp. The post wire subwoofer are red and white. I cut that wire. That cutted wire become 4 wires, right? The wire that stuck to the harness was connected to Fix86. The wire that I drew saying "not use" was just taped out. This mean that the OEM subwoofer was unplugged and not use. A new wire just run from JL subwoofer straight to aftermarket Amp. With this set up, my subwoofer was weak.
I was wondering, maybe, I need to do like picture #2? The post wire that label as "not use" should go to the aftermarket amp. And the JL subwoofer would wired to harness in the rear deck.
For example, like front/rear speaker: the amp speaker wire would tapped to the other end of the cutted post wire? right?
Hope you understand.
#7
Thread Starter
Instructor
what I mean is the red/white subwoofer wires on the post amp 18 pin harness and the plug at the factory subwoofer are the SAME wires. If you connected your amp to the wires at the factory amp amd then used the metra harness to connect to your sub, it would literally be exactly the same except you would be using the factory speaker wire instead of your own. That Metra harness is simply a speaker adapter. That isn't going to fix your issue. I'm not sure otherwise why you have weak output. Are your input wires to the fix86 out of phase?
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#8
Thread Starter
Instructor
#9
what I mean is the red/white subwoofer wires on the post amp 18 pin harness and the plug at the factory subwoofer are the SAME wires. If you connected your amp to the wires at the factory amp amd then used the metra harness to connect to your sub, it would literally be exactly the same except you would be using the factory speaker wire instead of your own. That Metra harness is simply a speaker adapter. That isn't going to fix your issue. I'm not sure otherwise why you have weak output. Are your input wires to the fix86 out of phase?
unless on the aftermarket wire is mix up between - and. + of the jl sub. Meaning the wire from the jl sub to aftermarket amp is opposite from what I wired from pin18?
on fix82, it has loud boom on jl sub. The reason I swap to fix86 was shop mess up wiring so I decide to do myself after consulting with jl support
Last edited by know610; 09-12-2017 at 09:32 PM.
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01LSi (09-14-2017)