Best advice I can give you is that the high frequencies are going to the 3.5" speaker, but it doesn't have a tweeter. So it can't replicate the higher spectrum all that well. So replacing those with a two way speaker is an immediate improvement. The 4" speakers only get mid bass, and they are okay for what they are. I prefer a larger woofer for those though. My personal choice was to replace just the dash 3.5s with JBL speakers. They are very similar to the Infinity, owned by the same company even. And I'm now fairly happy with them. The front sound stage is much more important than the rear, so I don't mind those being stock.
I would go ahead and double the order. The front is so much more important than the rear as far as sound goes. Not exactly sure what is going on with your soundbar, but I remember some other people having some plastic rubbing on things that made it sound bad.
Yes, just by sound and better highs, I just liked the Infinity 3022 3.5” in the dash and 350x 3.5” JL’s in the SB smaller location. I left the 4” larger SB stock speaker alone for now.
Update: I did go ahead and install the JL Audio 3.5” in the soundbar and glad I did. I’m convinced any Alpine Premium (8.4 with 9 speakers) replacement is a big improvement. My dash speakers sound much better with the Infinity 3.5” and now the soundbar sounds better with the JL Audio 3.5”. Why? Because the Alpines are low quality IMO and look about like they sound, cheap.
See pictures below comparing the magnets.
1) Alpine
2) Infinity
3) JLAudio
The other picture is the JL Audio 3.5” in the soundbar. Note: Credit to my daughter for holding the flashlight and learning the basics of maintenance stuff.
No wonder the Alpine’s sound so bad & muddy, there isn’t much there. I plan to keep my 8.4 head, but plan to replace all Alpine speakers from what I’ve seen so far.
Now I’m on the fence if I want to replace the remaining 4” speakers (2 in the soundbar and 2 in the dash knee area) with Morel 4” or use the new adapter pods coming out to house 6.5” in both areas.
If anyone has upgraded to 6.5” from 4”, please share your opinion and listening experience. Thx!
I used JL Audio C2 350x 3.5” in the SB from Amazon. I think I got them for $90 at the time, so might want to shop around. Here is the link below.
The 3.5” take the same Metra 72-7902 in the dash and SB, so you will need two pairs. Standard smaller plastic end trim tool will work for the dash cover plate, they pop right up. I had to put a very slight bend in the Infinity ears where the screws go with pliers to match the screw holes in the dash. Nothing to it and they fit fine. The dash cover plate snaps right back in. I put polyfil in both dash locations and the 4” mid spkers that wasn’t replaced. Poly won’t fit in SB 3.5” location with the JL’s, the JL’s max out the space. I didn’t use bass blockers because they made a popping sound when I turned on/off the ignition. Mine have been working fine without bass blockers for 8 months now.
