Does anyone know if the speakers in my '71 would be an 8ohm or a 4 ohm system?

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The old white brick

Just measure them.............

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

If i had a meter I would, but i don't, so i can't. and i have speakers laying around, Just wondering if i can use them. They're 4 Ohm's and I'd rather not put the wrong kind in and hurt something.

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The old white brick

Wow! I´ve never check ohm´s in my original speakers, also, I haven´t check it on my new speakers

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Mopar Muscle is well defend by Slant Six!

Valiant Duster 1971

Using 4 ohm in place pf 8 ohm speakers, or vice versa won't hurt anything. It does have an effect on the output power of the final amp but you are unlikely to hear the difference. As long as they aren't shorted or open they should work fine. Shorted or open speakers can blow the driver circuits in the final amp and that would "hurt something." I think most newer systems have protection circuits but older ones might not.

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David Kight
'62 Valiant Signet, White
'98 Dodge Dakota
'06 Jeep Liberty

Growing older is unavoidable but growing up is strictly optional.

Ok then, it'll be nice to listen to something on the way to work again.

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The old white brick

During the normal service life of most well-built audio gear, that's true. However, running 4 ohm speakers with an amp designed for an 8 ohm load /can/ blow the amp, especially if it's used that way for a continued amount of time. Running 8 ohm speakers on a 4 ohm amp won't hurt the amp, but it's still not recommended.

Good thing that all my sound sistem is 8 ohms. (I checked it today)

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Mopar Muscle is well defend by Slant Six!

Valiant Duster 1971

Its the stock AM radio in my '71 so we'll be okay?

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The old white brick

The factory speakers back then were never as low 4 ohm; they would have been 8ohm or higher. The number is the nominal resistance; if you measure it it could be 6.5 or 10.
The older the design, the more likely to have used a 16ohm speaker.

The '71 factory AM & AM/FM radios definitely used a power transistor driving an impedence matching transformer; while it'll work, at least for awhile, I'd recommend against going to a 4 ohm as it could damage the transformer. So far, I've been unable to find a source of replacement transformers.

I just can't remember offhand whether my '71 w/ AM radio came with a 8 or 16 ohm speaker - I'll look the next chance I get.

'Kay then. We'll hold off on putting a newer speaker in there.

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The old white brick

I check my '71 SAMS manuals - it definitely shows that the Mopar speakers of the time were 8 ohms. I couldn't find it in the factory manual.