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Subwoofer Mod Question

post #1 of 18
Thread Starter 
What resistor would I need to get something as dope as this without burning out?

http://www.youtube.com/watch?v=xnBsst3ynPs&context=C4f7d33bADvjVQa1PpcFNQqbE70e
post #2 of 18
You wouldn't need any resistors. Depends on your sub though obviously, but the z5500 doesn't output enough power.
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post #3 of 18
Thread Starter 
I'm pretty new to the electrical aspect of, well, everything, so I hope that you can bear with me.

Basically, I've got some cathodes with an inverter and wires such as those below:

394

I've got some Z313s that I'd simply like to stick the cathodes under, but I'm not sure where I should be hooking up.
post #4 of 18
Quote:
Originally Posted by xflamin View Post

I'm pretty new to the electrical aspect of, well, everything, so I hope that you can bear with me.

Basically, I've got some cathodes with an inverter and wires such as those below:

394

I've got some Z313s that I'd simply like to stick the cathodes under, but I'm not sure where I should be hooking up.

Hook that power source for the CCFL's into the subwoofer's speaker wiring. I doubt you'll push 12v into it though. Actually I KNOW you won't get 12v out of that subwoofer's speaker wire.

So it won't work, and if it does....it'll be very dim.
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post #5 of 18
Thread Starter 
Alright, I see. It's just that I've read about the amps overpowering, which is why I asked about the resistor.
post #6 of 18
Quote:
Originally Posted by xflamin View Post

Alright, I see. It's just that I've read about the amps overpowering, which is why I asked about the resistor.

Well the Z313 system is 25w total power. Assuming the best case scenario of 20w to the sub and 5w split between the satellites, that's going to be 20w RMS @ 4ohm. Again, assuming best case scenario, that sub will NEVER see 20w RMS.

So 20w, 4ohm.....that's only 1.23v. So your CCFL's won't even know that there's power there.

Again, this is assuming a BEST case scenario.

You could always just wire up the CCFL's to any 12v AC to DC converter (like a cell phone or something), and just use them on all the time.
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post #7 of 18
I havent done this before (not really good with audio equipment / insides of speakers / subwoofers, but I have some electrical knowledge). Get a multimeter, open up the subwoofer and find the output to the speaker inside the subwoofer, and measure the voltage for when its on / off. You need on to be above around 0.6v. Get a transistor and wire that in with it, (base to the output on the subwoofer, collector from a +12v rail and emitter to the CCFL red wire). Wire the other end of the CCFL (the black wire) to a 0v rail. You may need a resistor from the output of the speaker to the base of the transistor depending on the output voltage. I havent done this before / dont know if it will work so someone may correct me on this. You could use a PC PSU if you want, or any converter that outputs 12v with enough current to power the CCFL's.
    
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post #8 of 18
Thread Starter 
Quote:
Originally Posted by pioneerisloud View Post

Well the Z313 system is 25w total power. Assuming the best case scenario of 20w to the sub and 5w split between the satellites, that's going to be 20w RMS @ 4ohm. Again, assuming best case scenario, that sub will NEVER see 20w RMS.
So 20w, 4ohm.....that's only 1.23v. So your CCFL's won't even know that there's power there.
Again, this is assuming a BEST case scenario.
You could always just wire up the CCFL's to any 12v AC to DC converter (like a cell phone or something), and just use them on all the time.

Like a cell phone or a cell phone charger? I'm not picturing the hookups.
post #9 of 18
Quote:
Originally Posted by xflamin View Post

Quote:
Originally Posted by pioneerisloud View Post

Well the Z313 system is 25w total power. Assuming the best case scenario of 20w to the sub and 5w split between the satellites, that's going to be 20w RMS @ 4ohm. Again, assuming best case scenario, that sub will NEVER see 20w RMS.
So 20w, 4ohm.....that's only 1.23v. So your CCFL's won't even know that there's power there.
Again, this is assuming a BEST case scenario.
You could always just wire up the CCFL's to any 12v AC to DC converter (like a cell phone or something), and just use them on all the time.

Like a cell phone or a cell phone charger? I'm not picturing the hookups.

Yes, any charger that shows 12v DC output on it with at least 0.5a (for one CCFL inverter). You'd have to make the hookups by cutting the connector off the end, and splicing the wires.
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post #10 of 18
Thread Starter 
Quote:
Originally Posted by pioneerisloud View Post

Yes, any charger that shows 12v DC output on it with at least 0.5a (for one CCFL inverter). You'd have to make the hookups by cutting the connector off the end, and splicing the wires.

Thanks for all your help. May look a little messier than I'd pictured, but it'll be working.
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