I had a quick search and couldn't seem to find anyone mentioning this little mod before here. The trick looks well known in street Suzuki communities but less so in 4wd/Jimny circles, so decided to share for folks in the future.
AFAIK, older zooks like Sierras, Vitaras and 1st/2nd Gen GV are relatively easy to replace/upgrade speakers in that they are pretty much plug and play - the old speakers screw out directly from the mounts in the door/dash and a new one fits in the exact same place without any fuss. Newer zooks however (released after say 2000s) changed to an integrated speaker-and-mount style typical of modern car design. What this means is that aftermarket speakers will not be in the same position as the OEMs, unless you find and buy additional adapter specific to your vehicle.
Instead of spending $40+ on what's essentially plastic rings, you can instead cut out the cone and driver from the OEM speaker to use the remaining housing as a spacer. The only downside is that it's a little fiddly and this mod might limit you from using really deep cone speakers, due to the way the OEM speaker housing tapers in... but considering that in some models the window rail sits uncomfortably close to the back of the speaker driver, that might not be such a bad thing as it becomes an interference check.. of sorts.
Zooks that I know this mod is applicable to:
- JB/JT/GV3/WhateverFlavourYouWantToCallIt Grand Vitara (2005-2018)
- JB74 Jimny (2018-)
- RS/ZC and newer Swift (2005-)
- MF Ignis (2016-)
- GY/EY/RW and newer SX4 (2006-)
- LY Vitara (2015-)
- WB and newer Baleno (2015-)
NOTE: When doing this mod, you will still be limited by the size of your original speakers i.e. if you have a car with OEM 6-1/2" (125mm) dia. speakers, you can only upgrade to better speakers of the same size you started with. This is particularly important for some models like the JB74 Jimny, which has 4" (100mm) speakers as standard but also has factory/aftermarket options to upsize to 5-1/4" (130mm). If you originally have 4" speakers and do this mod, you will still be stuck with 4" unless you pay for the kit or make your own custom adapter rings. Kudos to Fordem for pointing this out!
What you want to do is cut off the top flange holding the paper cone, as well as on the tree supports on the back supporting the speaker driver. This can be easiest done with a dremel, but I've watched videos of people using a multi-tool or (barbarically) a reciprocating saw to passable effect also.
Attachment:
SpeakerFront.jpg
Attachment:
SpeakerBack.jpg
Discard the old speaker guts, clean up any leftover protrusions with a file and you are left with the ring below:
Attachment:
ModifiedRing.jpeg
Pop your new speaker in - You can pad the edge of the housing or the underside flange of your aftermarket speaker to protect from any unwanted damage or vibrations with your handiwork. Line up the holes of your new speaker with the ones in the lower housing flange to install back in the door.
Attachment:
InDoor.jpeg
Done!
_________________
Seeing more than just road grime soon
TM.
JT Grand Vitara Electronic Service Manual Guide