Oldsmobile Cutlass Supreme Speaker Size

Rear Deck Lid Speaker

Dashboard Speaker

Front Door Panel Speaker

Oldsmobile Cutlass Supreme Speaker FAQ

Which speakers should I replace first in my Oldsmobile Cutlass Supreme for the biggest sound improvement?

Replace the rear deck speakers first. These 6 x 9 inch or 4 x 10 inch units handle most of your music's mid-range and bass frequencies. The dashboard speakers might seem more important since they're closer, but they're typically smaller 4 inch or 3.5 inch units that can't reproduce lower frequencies effectively. Your Cutlass Supreme's rear speakers do the heavy lifting - upgrading to quality coaxial speakers with 50-75 watts RMS power handling will give you the most noticeable improvement. The front speakers can wait unless they're completely blown.

Can I install component speakers in my Oldsmobile Cutlass Supreme dashboard location?

Probably not in the dashboard spots. Those 4 inch and 3.5 inch dashboard locations were designed for simple full-range speakers. Component systems need separate mounting for tweeters and woofers, which your Cutlass Supreme's dash doesn't accommodate. Stick with quality coaxial speakers for the dashboard - look for ones with good tweeter integration and 20-40 watts RMS handling. The 4 x 6 inch front door locations on later models can sometimes work with components, but you'd need custom mounting brackets and might have clearance issues.

What's the difference between coaxial and triaxial speakers for my Oldsmobile Cutlass Supreme rear deck?

Coaxial speakers have a woofer with a tweeter mounted in the center - simple two-way design that works well for most music. Triaxial adds a small midrange driver, giving you three-way sound from one speaker. For your Cutlass Supreme's 6 x 9 inch rear deck location, triaxial might seem better but... the midrange driver is usually pretty small and doesn't add much. Quality coaxial speakers with good frequency response often sound better than cheap triaxial ones. Focus on speaker sensitivity around 88-92 dB and 4-ohm impedance rather than the number of drivers.

How many watts can the factory speaker wiring handle in my Oldsmobile Cutlass Supreme?

The factory wiring should handle speakers up to about 75 watts RMS without issues. Most factory head units in the Cutlass Supreme put out 15-25 watts per channel, so the original wiring was sized appropriately. If you're adding an amplifier or high-powered aftermarket head unit, you might want to run new speaker wire - especially for the rear deck speakers that have longer wire runs. Use 16-gauge wire for runs under 20 feet, 14-gauge for longer distances. The dashboard speakers have shorter runs so they're less critical for wire upgrades.