Pontiac GTO Speaker Size

Front Door Panel Speaker

Rear Door Panel Speaker

Rear Deck Lid Speaker

Rear Speaker

Pontiac GTO Speaker FAQ

What speakers should I upgrade first in my Pontiac GTO?

Start with the front door panel 6.5 inch speakers. They handle most of your music's midrange and vocal frequencies. The front speakers create your primary soundstage - everything else builds from there. Rear speakers mostly fill in ambiance. So front doors first, then consider the rear deck lid 6.5 inch units if you want fuller bass response from the back.

Can I install component speakers in all Pontiac GTO locations?

Yes, all positions accept component speakers. The 6.5 inch front door panels work well with components since you can mount tweeters in the A-pillars or dash corners. Rear locations might be trickier for tweeter placement. Component systems typically deliver better imaging than coaxials because you control tweeter positioning. Though coaxials are simpler if you don't want to run extra wiring.

What power handling should I look for in GTO replacement speakers?

Target speakers rated around 50-75 watts RMS for the 6.5 inch positions. The factory system probably pushes 15-25 watts per channel. Most aftermarket head units output 18-22 watts RMS. If you're adding an amplifier later, speakers with 100+ watts RMS give you room to grow. But don't chase peak power ratings - they're mostly marketing numbers.

Do rear deck lid speakers improve bass in the Pontiac GTO?

Somewhat. The 6.5 inch rear deck speakers can reinforce lower midrange frequencies around 80-200 Hz. But they're not true subwoofers. Their positioning in the deck lid creates some cabin coupling that might add perceived bass impact. Though front speakers usually contribute more to overall bass response since they're closer to your ears. Consider upgrading rears after you've addressed the fronts and added proper amplification.

What impedance should I choose for GTO speaker replacements?

Stick with 4-ohm speakers for most applications. The factory system expects 4-ohm loads. Some high-end component sets come in 8-ohm versions, but those typically need more power to reach the same volume levels. If you're planning to add an amplifier, check its specifications - many amps actually produce more power into 4-ohm loads anyway.

Are full-range speakers better than coaxials for the Pontiac GTO rear doors?

Full-range speakers focus on midrange reproduction without built-in tweeters. They might blend better if you've installed component speakers up front - avoids competing tweeters in the rear. Coaxials give you more complete frequency coverage though. Really depends on whether you want the rear doors to complement your front stage or provide independent full-spectrum sound. Most people probably prefer coaxials for rear fill.