Pontiac Bonneville Speaker Size

Front Door Panel Speaker

Rear Deck Lid Speaker

Dashboard Speaker

Rear Door Panel Speaker

Pontiac Bonneville Speaker FAQ

Which speakers should I replace first in my Pontiac Bonneville for the biggest sound improvement?

Replace the front door speakers first. They handle most of your music's midrange and vocal frequencies. For Pontiac Bonneville models with 6.5 inch front doors, you'll get the most noticeable upgrade since these larger drivers can move more air than the smaller dashboard units. The 4 x 6 inch front speakers in earlier models still matter more than rear deck speakers for daily listening.

What's the difference between coaxial and component speakers for the Pontiac Bonneville front doors?

Coaxial speakers combine the tweeter and woofer in one unit - simpler installation, decent sound. Component speakers separate these elements, typically offering better imaging and frequency response. Your Pontiac Bonneville's front door locations can handle both types. Components might require tweeter mounting somewhere else in the door panel. The choice depends on whether you want plug-and-play convenience or potentially better sound staging.

Can I install 6.5 inch speakers in older Pontiac Bonneville models that originally had 4 x 6 inch speakers?

Not directly. The mounting points and speaker opening dimensions are completely different. 6.5 inch round speakers need circular cutouts, while 4 x 6 inch speakers use oval openings. You'd need custom brackets or door panel modifications. Sometimes the depth clearance becomes an issue too - window mechanisms can interfere. Stick with 4 x 6 inch replacements unless you're planning extensive door panel work.

What power handling should I look for in replacement speakers for my Pontiac Bonneville?

Most factory head units in the Pontiac Bonneville put out around 15-25 watts RMS per channel. Look for speakers that can handle 30-50 watts RMS comfortably. This gives you headroom for aftermarket amplification later. Peak power ratings don't matter much - focus on RMS. For the 6 x 9 inch rear deck speakers, you might find options up to 75-100 watts RMS, but your factory radio won't use that extra capacity.

Why does my Pontiac Bonneville have different speaker sizes in the front depending on the model year?

Dashboard space constraints and door panel design changes. Earlier models used smaller 3.5 inch dashboard speakers with limited bass response. The switch to 4 x 6 inch allowed better midrange. When Pontiac Bonneville moved to 6.5 inch front door speakers, they could eliminate dashboard speakers entirely in some configurations. Bigger speakers generally mean better low-frequency response and overall volume capability.

What impedance should replacement speakers be for the Pontiac Bonneville?

4 ohm speakers work best with factory head units. Most car audio systems expect this impedance for proper power delivery and protection circuit operation. Using 8 ohm speakers will reduce volume output. 2 ohm speakers might cause overheating in factory radios. The Pontiac Bonneville's electrical system is designed around 4 ohm loads, so stick with that specification unless you're adding external amplification.