Sorry its a bit long, but trying to explain the whole scenario before I get flamed and asked a bunch of questions
General Question: How do I get subwoofer level bass signal thru LOC if I'm using an aftermarket 4ch amp to power my comps/speakers. Currently tapped into rear 6x9 (Under stock amp)
2005 TSX w/ Navi
Stereo setup stuff (if it matters at all, or for those who has to visualize it)
Stock HU (Navi)
JL 300/4
Polk Audio 6500db Speakers 6.5"
Phoenix Gold rsd65cs Components 6.5"
Alpine MRP-M850
Alpine 12" Type-R Dual Voicecoil 4ohm
note: Mercman's TSX Factory Amp Bypass no splice Adapter and Harness.
This adapter/harness will allow you to connect an aftermarket amp to the TSX HU without cutting or splicing the factory harness. The Adapter/Harness plugs directly into the factory 14 pin harness (removed from the factory amp) and provides RF, LF, RR and LR audio signals and an amp turn on wire. The harness is 12 ft long. Connecting your amp directly to the HU balanced line outputs eliminates the underpowered factory amp and built in EQ.
This adapter is designed to properly handle the low impedance balanced line output of the factory HU. The adapter maintains the balanced differential signal for a proper hand off to an amp with differential inputs.
Running the JL 300/4 - So I got mercmans harness, Since the stock harness will be disconnected, basically all the speakers will be disconnected, and I am running my amp for my subs thru LOC through the back 6x9's. How would I be able to LOC my sub amp after disconnecting the harness? I plan on disconnecting/removing the rear 6x9's when I do go through with the whole install.
mercman suggests i use RCA “Y” cable to split the L+R rear channels from the harness, however, this would be getting signals from the rear 6.5's speakers not the 6x9's. so wouldn't this bass be totally different?
edit: could i get the left rear speaker + and - and hook that up with the 300/4 amp as well on the same channel as the rear left passanger door 6.5's..? (not sure if that makes any sense at all) ... So on the input for the rear left speaker, I would have two speaker wires going in instead of one (one of them being the 6x9, which is disconnected, i just need power to the wire so that my LOC can get a signal for bass) .... yeah?
another person suggests:
"The signal going to your rear doors is full range. You could split the signal from each door and run them to your amp. Then just adjust the crossover on your amp to where you like it (somewhere in the range of the low-end cutoff for your door speakers.) If you do it this way, fading to the rear will drive rear doors and sub, just like stock."
note: getting an aftermarket HU is not an option
