Plymouth Gran Fury Speaker Size

Dashboard Speaker

Rear Deck Lid Speaker

Plymouth Gran Fury Speaker FAQ

What speakers should I replace first in my Plymouth Gran Fury?

Replace the rear deck speakers first. The 6 x 9 inch speakers in the rear deck lid handle most of your bass response and overall volume. Dashboard speakers are typically 3.5 inch and mainly cover mid-range frequencies. Your Gran Fury's rear position gives you the biggest sound improvement per dollar spent. The larger surface area of 6 x 9 speakers moves more air than the smaller dashboard units.

Can I install triaxial speakers in my Plymouth Gran Fury rear deck?

Yes, triaxial speakers fit the rear deck lid mounting points. The original configuration supports coaxial, full-range, or triaxial types in the 6 x 9 size. Triaxial adds a dedicated tweeter for higher frequencies above what the woofer and mid-range handle. Check impedance ratings - most aftermarket speakers run 4 ohms while some factory systems used 8 ohm speakers. Your amplifier might push different power levels depending on the load.

Why do Plymouth Gran Fury dashboard speakers sound weak?

The 3.5 inch size limits low-frequency response. Dashboard speakers typically roll off around 200-300 Hz, leaving a gap between what they produce and what your rear speakers handle. Physical space constraints mean smaller magnets and voice coils. The dashboard location also creates reflection issues off the windshield. These speakers work best for vocals and mid-range clarity rather than full-spectrum sound.

What power handling should I look for in Gran Fury replacement speakers?

Target 20-50 watts RMS for the rear 6 x 9 inch speakers, 10-25 watts for dashboard units. Most aftermarket head units output around 15-25 watts per channel. If you're adding an amplifier later, you can go higher - maybe 75-100 watts for the rear deck speakers. The factory electrical system in your Plymouth Gran Fury handles moderate power increases without issues. Don't get caught up in peak power ratings, they're mostly marketing.

Do full-range speakers work better than component systems in a Plymouth Gran Fury?

Full-range speakers make more sense for this application. The Gran Fury doesn't have dedicated tweeter locations, and running new wiring for component crossovers gets complicated. Coaxial or triaxial speakers give you multiple drivers in the existing mounting points. The rear deck position actually works well for full-range speakers since you get some natural separation between front and rear sound staging. Component systems shine in cars designed for them from the factory.