Chevrolet HHR Speaker Size

Front Door Panel Speaker

Rear Side Panel Speaker

Rear Door Panel Speaker

Chevrolet HHR Speaker FAQ

Which speakers should I replace first in my Chevrolet HHR for the biggest sound improvement?

Replace the front door panel 6.75 inch speakers first. These handle most of your music's mid-range frequencies and vocals. The front location means you'll hear the improvement immediately since sound travels directly to your ears. Component speakers around 75-100 watts RMS work well here. The 1.5 inch tweeters can wait - they're secondary to the main drivers. Focus your budget on quality 6.75 inch components with good frequency response between 50Hz-20kHz.

Can I install 6.5 inch speakers in the 6.75 inch front door locations of my Chevrolet HHR?

Yes, but you'll need mounting adapters or custom brackets. The 6.5 inch speakers will fit with about 0.125 inches of gap around the perimeter. This doesn't affect sound quality much. Actually, some aftermarket 6.5 inch speakers perform better than factory 6.75 inch units. Look for speakers with 4-ohm impedance to match your factory amplifier. Power handling around 60-90 watts RMS should work fine without overwhelming the stock head unit.

What's the difference between coaxial and component speakers for my Chevrolet HHR's front doors?

Component speakers separate the tweeter from the woofer - better sound staging and clarity. The tweeter mounts separately (often in the factory 1.5 inch location) while the 6.75 inch woofer handles bass and midrange. Coaxial speakers combine everything into one unit. Easier installation but the tweeter placement isn't optimal. Components cost more and require more wiring. If you're keeping the factory amplifier, make sure components don't drop below 4 ohms total impedance.

Should I upgrade the 8 inch rear side panel speakers in my Chevrolet HHR?

These 8 inch speakers might be handling subwoofer duties or full-range rear fill. Check if they're powered by a separate amplifier first. If they're just rear fill, upgrading won't make huge difference - front speakers matter more for sound quality. But if they're your only bass source, definitely upgrade. Look for 8 inch speakers that can handle 30-80Hz frequencies well. Dual voice coil options give you more wiring flexibility. Power handling around 100-150 watts RMS works for most setups.

Why does my Chevrolet HHR have both 6.75 inch and 6.5 inch speakers in the front doors?

Different trim levels or factory audio packages used different configurations. Some models had the larger 6.75 inch as the main driver with separate tweeters. Others used 6.5 inch speakers in a different mounting configuration. The size difference isn't huge for performance. Both can be upgraded to similar aftermarket speakers. Check your actual mounting depth and diameter before ordering replacements. Sometimes the factory specs don't tell the whole story about what actually fits.