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Speaker RCA to Speaker Wire Possible?

post #1 of 13
Thread Starter 
Hey, I have some Logitech Z506 speakers and I was wondering if i cut the rca adapter off, would I be able to use the speakers to pair them with a receiver?
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post #2 of 13
Quote:
Originally Posted by R4MP4G3 View Post

Hey, I have some Logitech Z506 speakers and I was wondering if i cut the rca adapter off, would I be able to use the speakers to pair them with a receiver?

Theoretically: yes it would work.
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Small wonder.
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post #3 of 13
Make sure you match impedance
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post #4 of 13
Thread Starter 
How would i find out about impendence? There is no number on the speaker and in the tech info it says N/A. The receiver takes between 8 and 16 ohms.
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post #5 of 13
Cut off which RCA? Am I just overlooking something, but isn't this just a typical (self-) powered active multimedia speaker set? They have their own amplifiers inside, so it wouldn't be your receiver driving them anyway, even if you hooked up the receiver to the speakers. That's why you don't need to know the impedance of the various pieces in the set.
post #6 of 13
Quote:
Originally Posted by mikeaj View Post

Cut off which RCA? Am I just overlooking something, but isn't this just a typical (self-) powered active multimedia speaker set? They have their own amplifiers inside, so it wouldn't be your receiver driving them anyway, even if you hooked up the receiver to the speakers. That's why you don't need to know the impedance of the various pieces in the set.

I believe the amp for these is built into the sub and all speakers connect to the sub. There would also I believe be a control module that also connects to the sub. I wouldn't expect the speakers to have their impedance marked on them for this reason. He needs to know what it is though to use them on another receiver or risk damaging it and or the speakers.

The impedance may or may not be marked on the back of the sub somewhere or on the back of a magnet on a actual speaker itself. OP would have to disassemble a speaker to check that out.
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post #7 of 13
Quote:
Originally Posted by Captain318 View Post

I believe the amp for these is built into the sub and all speakers connect to the sub. There would also I believe be a control module that also connects to the sub. I wouldn't expect the speakers to have their impedance marked on them for this reason. He needs to know what it is though to use them on another receiver or risk damaging it and or the speakers.
The impedance may or may not be marked on the back of the sub somewhere or on the back of a magnet on a actual speaker itself. OP would have to disassemble a speaker to check that out.

Or just use an ohm meter if he has one. thumb.gif
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post #8 of 13
Thread Starter 
Ok, i was asking because the control is broken for the sub and the sub is kind of busted up too, so i wanted to take advantage of the speakers and use them with my receiver. I will have to take it apart and check it out.
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post #9 of 13
Quote:
Originally Posted by Captain318 View Post

I believe the amp for these is built into the sub and all speakers connect to the sub. There would also I believe be a control module that also connects to the sub.
Yeah that's what it looks like to me, so this all makes sense now that I know the module is busted.

Quote:
Originally Posted by sks72 View Post

Or just use an ohm meter if he has one. thumb.gif
Be careful here because generally these just look at the DC impedance (aka resistance), which could be significantly different than the relevant impedance in the audio frequency range that that speaker covers.
post #10 of 13
Quote:
Originally Posted by mikeaj View Post

Yeah that's what it looks like to me, so this all makes sense now that I know the module is busted.
Be careful here because generally these just look at the DC impedance (aka resistance), which could be significantly different than the relevant impedance in the audio frequency range that that speaker covers.

Wouldn't that be what you want anyway? Watts through a conductor, which is what breaks things, is given by (V^2)/R, and that should work for both constant and time-varying voltage, correct?

Scratch that, you're right. With speakers inductance and (less so) capacitance have to be taken into account when calculating impedance, though the ohm meter would still give you 1/2 to 3/4 of the actual impedance
Edited by sks72 - 3/21/12 at 4:06pm
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