Cadillac Brougham Speaker Size

Speaker size, type, and location chart for Cadillac Brougham models from 1987 to 1992 production years.

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Front Door Panel Speaker

YearsTypeSize (inch)
1987 - 1992Midbass / Full-Range5.25

Rear Deck Lid Speaker

YearsTypeSize (inch)
1987 - 1992Full-Range6x9

Cadillac Brougham Speaker FAQ

What speakers should I replace first in my Cadillac Brougham for better sound quality?

Replace the front door panel speakers first. The 5.25 inch speakers handle most of your vocal range and midrange frequencies - that's where you'll notice the biggest improvement immediately. Front speakers also sit closer to your ears, so upgrading them typically gives you more bang for your buck. The rear deck speakers can wait since they mainly provide fill and bass support.

Can I install component speakers in the front doors of my Cadillac Brougham?

Yes, the front door panels already support component configurations. You'll want to mount the tweeter in the upper door area or dash location. Most 5.25 inch component sets will fit, but check your mounting depth - older Cadillac Brougham doors might have limited clearance behind the speaker. Crossovers can usually tuck into the door panel cavity or under the dashboard.

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

Triaxial speakers add a third driver - usually a super tweeter - on top of the standard woofer and tweeter combo. In your Cadillac Brougham's rear deck position, triaxials might give you slightly better high-frequency dispersion since the sound has to travel further to reach your ears. But honestly? The difference isn't huge. Good coaxials often outperform cheap triaxials. Focus on build quality and power handling over driver count.

What power rating should I look for in 6x9 speakers for my Cadillac Brougham?

Look for speakers that handle 50-75 watts RMS. Your factory system probably pushes around 15-20 watts per channel, so anything in that range gives you plenty of headroom for future amplifier upgrades. Peak power ratings are mostly marketing - stick with RMS numbers. Most quality 6x9s in this power range will be a significant step up from whatever's currently in your Brougham's rear deck.

Will aftermarket speakers fit the factory mounting points in my Cadillac Brougham?

The 5.25 inch front speakers should mount directly using existing screw holes. The 6x9 rear speakers... that's where it gets tricky. Some aftermarket 6x9s have slightly different mounting patterns. You might need to drill new holes or use adapter brackets. Measure your current speakers' mounting hole spacing before ordering replacements. Factory grilles usually accommodate most aftermarket options without modification.

Should I keep the full-range setup or go with dedicated midrange speakers in front?

Depends on your goals. If you're planning to add an amplifier and separate tweeters later, dedicated midrange speakers make sense - they'll integrate better with component systems. But if you want simple plug-and-play improvement, quality coaxial full-range speakers are probably your best bet. The Cadillac Brougham's acoustics work well with either approach, though the cabin size favors speakers with good midrange presence.