Home Theater Guy

TARider

Well-Known Member
Joined
Aug 7, 2011
Location
Concord
Anyone know a home theater guy in Concord? I'm getting a shutdown fault on my receiver when turning on zone 2. Not sure if it's a short or some kind of speaker/receiver setting mismatch as the zone 2 speakers/outdoor switches were here when we moved in.
 
TARider said:
Anyone know a home theater guy in Concord? I'm getting a shutdown fault on my receiver when turning on zone 2. Not sure if it's a short or some kind of speaker/receiver setting mismatch as the zone 2 speakers/outdoor switches were here when we moved in.
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How many speakers are on zone 2? What are their impedances? What is the minimum impedance required by your amp? If there are more than two speakers, are they separated by impedance matching switches or volume controls? Have you tried hooking up left and right channels separately to see if the fault still occurs?

Do you have an ohm meter?
 
shawn said:
How many speakers are on zone 2? What are their impedances? What is the minimum impedance required by your amp? If there are more than two speakers, are they separated by impedance matching switches or volume controls? Have you tried hooking up left and right channels separately to see if the fault still occurs?

Do you have an ohm meter?
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4 speakers (2 sets, each set with their own OVC). I'm going to have to climb up to figure out their impedences and do some googling to figure out my amp. Yes on the ohm meter. No on trying left and right. Had no idea where to begin.
 
TARider said:
4 speakers (2 sets, each set with their own OVC). I'm going to have to climb up to figure out their impedences and do some googling to figure out my amp. Yes on the ohm meter. No on trying left and right. Had no idea where to begin.
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Id start with that. Meter each side, make sure they have a few ohms of resistance. Unhook one side at a time, see if there's a difference. Hook up some known good speakers to the amp, make sure it works. Open up the volume controls, see how they're wired, make sure everything looks like it should work, etc. Turn one set of speakers completely off (or disconnect them), see if it changes.

I'm no home theater tech, but I have eight speakers running on zone two.
 
Thanks. I tried it again with less volume going out and it worked. I'm going to leave it off until I get a lot more unpacking done and then mess with it. Moving sucks.
 
TARider said:
I tried it again with less volume going out and it worked. I'm going to leave it off
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They could have wired up a pair of 8ohm speakers in parallel and run them off a 4ohm amp, etc. If your amp only supports 6ohm speakers, it will fault out if you send too much power to them.
 
^^ this. Sounds like they just split the lines to double their output, doubling the resistance and your amp can't support it.
Easily verified w/ a multimeter.
 
So if these are the numbers for my amp (zone 2 is the surround back) what am I looking for the speakers and meter to say?
And what should the impedence switches in the OVCs be set to (1/2x, 4x or 8x)?

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Impedance isn't constant. That's part of the problem.

But knowing your amp is only rated to 6ohm reinforcesrein idea that you have two pair of 6ohm or 8ohm speakers on parallel.
 
Find the plug or wires going to the speakers. Put a multimeter across the + & - of a line (I'm assuming you just have 2 sets, 1 pair for Left... which presumably goes to 2 Lefts, and another single pair which actually goes to 2 Rights). Measure the impedance.
 
The answer to the proper switch setting, depends on the impedance of the speakers.
 
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