Full speaker upgrade.
Factory non JBL speakers are cheap paper.
I replaced the dash tweeters, all four door speakers and installed a sub.
I went with Crutchfield for the door speakers as they provide any needed wire adapters and the speaker mount adapters.
I don’t recall off hand the part numbers, but 4 speakers cost less than $200 - Kicker brand,
Door panel removal was easy (thanks YouTube). I did use a trim removal kit (yes, from Amazon) to aid in this process.
For the dash speakers/ tweeters - they share the same manufacture with Subaru.
Genuine Subaru H631SFJ101 tweeter kit. (Kicker brand)
Ordered from Amazon.
$96
Careful when removing the tweeter trim cover, it’s easy to snap off the retaining clips. You’ll also need a stubby socket to remove the 2 bolts for the speaker just under the windshield. I used a shallow 1/4 drive set.
For the sub, I went with a 10” Rockford Fosgate Prime R1S4-10 (150 way - 4 Ohm).
$47
From Amazon.
I already had a R1-4 Ohm amp, so this kept it easy on the pocket book. The amps are still on Amazon for about $50-70.
The box and harness from the stereo came from Tacotunes.
The harness was a plug & play from the back of the deck to the amp mounted behind the passenger rear seat. Just remember to plug the other stuff back into the rear of the deck, I got done and had no nav, cause I left it unplugged.
They do offer 12 boxes, but I didn’t need that much bass. 10” box is $109.
The harness is the “Plug and play add a subwoofer harness”.
$35
Hardest part was running the wires. I ordered a amp kit from Amazon, or you can pick one up at walmart or your local stereo store. When in doubt, go longer on the wires so you don’t run out 3/4 of the way through the install.
I ran the wires through a rubber nipple on the passenger firewall and down under the door trim panels. I did have to squeeze it through the B pillar where the seat belt anchors, I loosened the trim and used a metal coat hanger to feed it through both the nipple and B pillar.
All in all this took about 5 hours.
I’m very pleased with the sound.
The plastic back of the seat on the driver side rear passenger seat had to be removed to make the box fit, as did the storage compartment behind the driver rear seat. I couldn’t add a grill either but you shouldn’t need one as it’s behind the seat with no possibility of being punctured.
No pic of the amp, theirs a car seat strapped in blocking the way.
All stereo functions work as they did with the factory system.
I was able to ground the amp near the rear seat.
I did have to drill out a hole to pass the wires through on both sides of the plastic trim behind the passenger rear seat.