So I finally picked up my truck and the first thing I bought for it was a pair of speakers
- JL Audio C2-350x 3.5” mids for the dash, plus some 300Hz bass blockers. I felt the base system dash speakers were quite subdued and sounded more like quiet tweeters than real midrange drivers. The door speaker volume dominates causing the sound to be oriented down low in the truck. I loved the smooth balanced sound of the JLs in my (good) local stereo shop, so we’ll see how they sound in the truck. The JL C2s cannot handle much load, so I’ll have to control myself with the potentially dirty stock amp output at high volumes.
The stock/base speakers are indeed 8ohm, one-way paper drivers with a high pass cap. Unknown sensitivity, but quiet.
Interesting note regarding terminal polarity: just figured out the stock crossover capacitor is installed on the negative speaker terminal as verified by a battery test, but the wire leading to that terminal is the violet wire (positive). Since the new harnesses map the yellow wire (-) to white and then to the large (+) connector, I may be running them out of phase but if they’re ALL out of phase together then hey whatev...
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The JLs are: 4ohm two-ways with a 3.5” mid + .75” silk tweeter (sensitivity only 86 dB @2.83V). Crutchfield says it won’t fit, but... with some very minor trimming of the tabs it will drop in... I still need to check the fitment of the trim cover/tweeter... UPDATE: the tweeter appears about 2mm too high, will let you all know when/how I sort it out.
See below, easy fix.
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Unfortunately my review of the sound will have to wait until my Metra 72-7902 harnesses arrive... note these harnesses are for the Ram’s dash only, and are smaller than the typical door harnesses (Metra 72-6514).
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UPDATE 2:
Sounds great (with eq adjustments)! So... first I wired in bass blockers to the Metra 72-7902 connectors; snapped in perfectly. White correctly maps to the positive terminal, and the existing connectors fit onto the JLs.
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I trimmed the speaker tabs w sheet metal scissors easy peasy. The tweeter crown interference was minimal, I just shaved off a little bit of the plastic ridges off the inside of the trim piece with my dremel. The plastic got fuzzy/melty so I had to fuss with sanding and trimming the fuzz off. Now plenty of room for the tweeter.
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Sound quality: After the JL Audio C2 install the dash speakers are definitely louder relative to the doors... perhaps a tiny bit too loud, but when I faded a notch to the rear it seemed to sound better, took the edge off. The treble/mids are absolutely more clear up front, especially for vocals. Voices sound much more natural. I bumped the midrange EQ settings +4 and treble +2 to get it sounding best for my ears - YMMV. (Initially my iPhone had EQ settings on so that resulted in weird settings until I changed it to flat.)
All in all I am very happy with the upgrade, for $100-ish bucks and a bit of trimming I now honestly like the sound... not that I’m done upgrading. The 6x9s are next (linked here) , after I check out JL C2 fitment issues.