Oldsmobile Cutlass Calais Speaker Size

Dashboard Speaker

Rear Deck Lid Speaker

Oldsmobile Cutlass Calais Speaker FAQ

What speakers should I replace first in my Oldsmobile Cutlass Calais?

Replace the 6 x 9 rear deck speakers first. They handle most of your bass and midrange output - around 80% of what you actually hear. The dashboard 3.5 inch speakers mainly fill in treble frequencies above 3kHz. Your Cutlass Calais rear deck location gives you more mounting depth too, maybe 3-4 inches versus the dashboard's cramped 2 inch maximum. This means you can fit speakers with larger magnets and better power handling, typically 50-100 watts RMS compared to the dashboard's 20-30 watt limitation.

Can I install component speakers in the Cutlass Calais rear deck?

Probably not the best choice. The rear deck mounting angle points upward at roughly 30-45 degrees. Component systems work better when tweeters aim directly at your ears. Stick with coaxial or triaxial speakers here - they're designed for this exact mounting situation. Triaxial adds a super tweeter that might help compensate for the awkward angle, though the improvement varies. You'd get better staging from components in the dashboard location, but that 3.5 inch size severely limits your options.

What impedance should I look for in Oldsmobile Cutlass Calais replacement speakers?

4 ohm speakers typically. The factory head unit expects this load, usually rated around 10-15 watts per channel. Going to 8 ohm speakers cuts your power output roughly in half. 2 ohm speakers might seem appealing for more volume, but they can overheat the factory amplifier section. Most aftermarket 6 x 9 speakers come in 4 ohm anyway. The 3.5 inch dashboard speakers - those are trickier to find in anything other than 4 ohm, which works out perfectly for the Cutlass Calais electrical system.

How much power can the factory wiring handle in my Cutlass Calais?

The factory wiring should handle about 50 watts RMS safely. Maybe 75 watts if you're not pushing maximum volume constantly. Beyond that, you're looking at potential voltage drop issues - the wire gauge from this era wasn't sized for high-power aftermarket speakers. Heat becomes a problem too, especially in the rear deck where summer temperatures can hit 140°F. Your 6 x 9 location has better airflow than the dashboard, so it's less critical there. Consider upgrading to 16 or 14 gauge wire if you're planning serious power increases.