AJ Lexus

I replaced my subwoofer with the Polk DB840DVC 8 inch Dual Voice Coil Subwoofer available on Amazon.com for about $60. This speaker fit in perfectly as a replacement for the O.E.M. Speaker in my 2003 Lexus LS430. It has much more base response than the factory speaker. The factory speaker had a light weight magnet and was basically a cheap speaker. I was surprised by how cheap the factory speaker seemed. The Polk was heavy and much higher quality and it sounded like it. I think you would definitely be getting ripped off if you pay the dealer $300 for a factory replacement speaker that sucks. Don't fix that old piece of junk, replace it.

Replacing the speaker wasn't an easy job. I had to take out the entire back seat, unbolt the seat belts, disconnect a couple of electronic connectors going to the rear seat, and unbolt and lift up the center of the rear deck. My arms got scratched up working under the rear deck when unbolting the speaker and removing it. I recomend wearing a long sleve shirt. There are two speaker coils with two sets of connections, unlike the original speaker that has one set. You have to read the Polk instructions to determine how to wire the speaker for your car. I wired mine so the two speaker coils were in series for an 8 ohm load on the amplifier, which I think was correct for my car from what I had read on other posts. All you need is a soldering iron, solder, and a foot of 16 gauge wire. It's easy.

I had some difficulty figuring out how to take the two plastic mounting brackets off the original speaker and put them on the new speaker. I advise you to closely study how the original speaker was mounted before you disassemble it so you can put the new speaker in without trouble. Take a few pictures of the intact assembly from various angles before disassembly for reference later. I had to find a picture of a factory speaker for sale on EBay to figure out how to put mine together. Be sure to route the speaker wire through the slot on the mounting brackets so you don't have to pull the speaker back out like I did to reroute the wires.

I hope this helps you have an easier time than I did with the work. I had some problems completing the job, but it isn't extremely difficulty. Just somewhat difficult doing it the first time for a "Shade Tree Mechanic". With some time, tools, and determination you can probably complete the job and save yourself several hundred dollars by doing the work yourself instead of taking the job to the Lexus dealer.

Good luck.

Hey

Did u change the amp as well or u jes hooked the sub into the factory amp?