Audi 90 Speaker Size

Dashboard Speaker

Front Door Panel Speaker

Rear Deck Lid Speaker

Audi 90 Speaker FAQ

What speakers should I replace first in my Audi 90?

Replace the rear deck lid 6.5-inch speakers first. These handle most of your bass response and mid-range frequencies. The rear deck position gives better bass coupling with the cabin - you'll notice the biggest improvement here. Front door panels come second since they affect vocal clarity and stereo imaging. Dashboard speakers can wait unless they're completely blown.

Can I install component speakers in the Audi 90's rear deck location?

Yes, the rear deck supports both coaxial and component systems. Component speakers work well here - mount the woofer in the deck and tweeter in the rear shelf area. You'll need to run separate wiring though. Coaxials might be simpler if you're not adding an amplifier. The 6.5-inch size gives you good power handling options, typically 50-100 watts RMS.

Why does my Audi 90 have three different speaker sizes?

Different locations serve different acoustic purposes. The 6.5-inch rear speakers handle bass and mid-range frequencies effectively - larger drivers move more air. Front 5.25-inch door speakers focus on mid-range and some bass, positioned for better stereo separation. Dashboard 4-inch speakers fill in high frequencies and provide front soundstage presence. It's actually a decent factory setup when all locations work together.

What type of speakers work best in the Audi 90's front doors?

Component speakers give the best results in the 5.25-inch front door location. Separate the tweeter from the mid-range driver - mount tweeters in the door panels or A-pillars for better imaging. Coaxials work too but positioning limits high-frequency dispersion. Look for speakers rated around 4-ohm impedance and 40-75 watts RMS. The door location helps with mid-bass response compared to dashboard mounting.

Should I upgrade the 4-inch dashboard speakers in my Audi 90?

Dashboard speakers mainly handle upper frequencies and soundstage width. Full-range 4-inch speakers work best here - they're designed to reproduce the entire frequency spectrum in a small package. Coaxials can work but might sound harsh at close listening distance. Consider 20-40 watts RMS maximum. The dashboard position creates reflections off the windshield that can actually enhance the stereo effect when done right.

What impedance should I choose for Audi 90 speaker upgrades?

Stick with 4-ohm speakers across all locations. The factory head unit expects this impedance load. Using 8-ohm speakers reduces power output significantly - you'll lose volume and dynamics. Some aftermarket speakers come in dual voice coil configurations, but 4-ohm single voice coil works best with factory amplification. If you're adding an aftermarket amplifier, check its specifications but 4-ohm remains the safe choice.