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Passive crossover question

post #1 of 9
1/1/13 at 9:39pm
Thread Starter 
I have taken my old soundbar apart for a project and I was wondering if there is a way to tell what ohm the crossovers are that are in it. I have a digital meter if that helps.

Each cross over has 2 woofers and 1 tweeter. The 2 woofers are 4ohm wired in series for 8ohm and the tweeter is 6ohm. Not sure if that helps.

Any info is appreciated.
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post #2 of 9
1/1/13 at 10:02pm
I'm not sure what you're asking?
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post #3 of 9
1/1/13 at 10:05pm
Thread Starter 
Basically, does the crossover have its own ohm rating or is it just whatever the 8ohm + 6ohm of the speakers comes out to? If the crossover has its own ohm rating, how do I figure out what it is?
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post #4 of 9
1/1/13 at 10:08pm
Ok, the cross over does create an impedance curve which has an ohm rating, but changes with frequency. You would have to measure the impedance of the speaker to get that. It's not just a number.

Hopefully that helps. Why do you want to know this? Perhaps there is an underlying concern/question?
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post #5 of 9
1/1/13 at 10:17pm
Thread Starter 
Well the receiver I'm wanting to connect them to can handle 6 or 8 ohm, so I am wanting to make sure I won't do any damage to it. So I was hoping I could figure out what the load would be before connecting anything.
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post #6 of 9
1/1/13 at 10:48pm
Your fine.

The chips in most the receivers are rated down to 3 ohms and can drive stuff even below that. The 6-8 ohms rating is just there because that is the load they will handle without overheating at the max rated power for extended periods of time. The lower the impedance the higher the current for a given power level and with more current come more heat which is the true enemy here.

So stop worrying, plug it in and enjoy.
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post #7 of 9
1/1/13 at 11:14pm
Thread Starter 
I like it. Thanks for the info guys.
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post #8 of 9
1/2/13 at 9:38am
Quote:
Originally Posted by mix1983 View Post

Each cross over has 2 woofers and 1 tweeter. The 2 woofers are 4ohm wired in series for 8ohm and the tweeter is 6ohm. Not sure if that helps.

The nominal impedance of the speaker would be considered 8 ohm in this case. The tweeter being 6 ohm doesn't really matter.
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post #9 of 9
1/2/13 at 4:51pm
Thread Starter 
Not sure if anyone cares, but this is what all this was about...


The receiver is connected directly to the crossovers inside the soundbar and it is now my (temporary) rears. It is right behind my listening position.
Edited by mix1983 - 1/2/13 at 9:56pm
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