4 vs 8 Ohm car speakers

[pareif]

My son wants to hookup aftermarket 4 ohm speakers to the Chevy OEM radio that has 8 ohm orig speakers in front and rear of his Blazer. What will happen? Thanks, Pete

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[CHEMMINS 10+ year member]

Depends....but more than likely watch the chev oem deck go poof. Have a look and see how they are wired. He may be ok.

 

[Sarthos 10+ year member]

Most likely deck gonna go boom. Even if it doesn't go boom it's gonna have problems with CDs skipping (if applicable) and such from the extra heat.

 

[orangecounty1 10+ year member]

3 options

get a new head unit as well as the new 4 ohm speakers

get 8 ohm speakers (look on partsexpress.com)

leave the stock head unit and use 4 ohm speakers, and it may or may not break down the road.

 

[Wattser93 10+ year member]

Depending on the speakers that he's putting in there, they may sound worse than stock. Some the Boston stuff is designed to run off of 35RMS and they do pretty well off of an aftermarket HU power, but most stuff will be severely underpowered and sound worse than keeping the stocks. Unless he's adding a sub, I wouldn't replace the stock speakers unless they're designed for low power applications, and even then a small amp will make a huge difference over the SQ you can get out of a HU's internal amp.