# What does "impediance matching" mean???

Discussion in 'Archived Threads 2001-2004' started by Brad Craig, Feb 27, 2002.

1. ### Brad Craig Stunt Coordinator

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For example: I know it has something to do w/ multi-sets of speakers hooked to a receiver so it doesn't overload the receiver...

It says 2x, 4x, 6x, 8x which I assume means something in relation to the number of speakers...

2. ### Bob McElfresh Producer

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Before we get to impedence matching, you need to understand:

Serial Connection - You have 3 speakers A, B, C. The signal flows from the RED binding post on the amp into A, then out and into B, then out and into C, and the output from C goes into the BLACK binding post on the amp.

What the Amp thinks is happening is you have 1 speaker with an impedence of A + B + C. So 3 8 ohm speakers look like a single 24 ohm speaker to the amp.

Parallel - You have 3 speakers A, B, C. The red wire from all 3 speakers are tied together, then attached to the red binding post. The black wires from all the speakers are tied together and attached to the black binding post.

What the amp thinks is happening is you have 1 speaker with an impedence of 1/[1/A + 1/B + 1/C]. so 3 8 ohm speakers look like a 2.3 ohm speaker.

This will draw a lot of current and can damage your amp.

Does this help?

3. ### Brad Craig Stunt Coordinator

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So impediance is equal to total amt of ohms from x amount of speakers???

And matching is making the total ohms of the speakers where the receiver can handle it???

So what does the 2x, 4x,6x,8x mean???

Also I know by reducing the ohms to low amounts, can damage the speakers and/or the amp...

What happens when you put a large ohms loads on a receiver???

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