Odd Question About my AVR, my current setup and some Logitech Z506's - AVS Forum
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post #1 of 7 Old 12-10-2012, 11:11 PM - Thread Starter
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Ok to start off my current setup is this. PC with a Xonar STX to a STR-DH520 which has a pair of AS-B1's on it and a Dayton sub 1200 connected through LFE out. Now this all sounds like it should to me, no problems there. My next question is whats odd. I don't have a lot of cash ATM so id like to take a set of Logitech Z506's and well take its satellites for use in 7.1. I plan to do this by stripping the wires of the RCA connectors and just having my AVR power these for there respected channel. What im not sure about is whether my AVR will fry these things as it has 100w RMS per channel. I think they might, Logitech has the specs for the speakers as shown below and CNET has them as shown below. So my main question again is will this even work if i try it or just damage the speakers, I will be keeping my AS-B1's for the front LR channels.

Total RMS power:
75 watts RMS
Satellites: 48 watts RMS (2 x 8 W front, 16 W center, 2 x 8 W rear)
Subwoofer: 27 watts RMS
Total peak power: 150 watts
Frequency response: 45 Hz–20 kHz

CNET has them as this:

2 x Right/left channel speaker - 8 Watt - Wired,
1 x Center channel speaker - 16 Watt - Wired,
2 x Right/left rear channel speaker - 8 Watt - Wired,
Subwoofer - 27 Watt - Wired
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post #2 of 7 Old 12-11-2012, 12:10 AM
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It would work fine as long as you don't put the volume too high. 

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post #3 of 7 Old 12-11-2012, 02:35 AM - Thread Starter
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Originally Posted by Mrkazador View Post

It would work fine as long as you don't put the volume too high. 
thanks for the response I figured that was what my answer would be. My next question when I take apart the serial connection of the front right speaker, and the RCA's of the other speakers how will i know what is positive and negative? I doubt one will be copper colored inside.

Thanks again for you help.
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post #4 of 7 Old 12-11-2012, 02:53 AM
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http://www.youtube.com/watch?v=H-kxtKGR2vY

Play this while having two speakers set up in stereo. If "in phase" doesn't sound in center then change the polarity of one of the speakers. Some DVD movies have a feature called THX Optimode that has a similar phase test. Usually the rca ground will be the outer part of the rca plug and the pin will be the positive signal.

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post #5 of 7 Old 12-11-2012, 03:12 AM - Thread Starter
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Okay thanks I wasn't sure if the phase would be off or the speakers just wouldn't have sound. I guess the hardest part is finding the right wires in the front one with the serial connection. I found this: Generally, the center pin is positive, and the outer shell of an RCA connector is negative.

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post #6 of 7 Old 12-11-2012, 03:38 AM
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Originally Posted by rvcjew View Post

I guess the hardest part is finding the right wires in the front one with the serial connection.

You could use a multimeter and just start poking around at the serial connector. Get the right combination and you should see a resistance of around 4-8ohms I think. These would be your speaker connections. Hopefully it doesn't have an amplifier inside the speaker for power, this would be more complicated which would require you to open it...

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post #7 of 7 Old 12-11-2012, 04:05 AM - Thread Starter
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Ah good idea ill get my multi out of my server kit tomorrow and do this wiring after my finals.

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