Hmm it sounds like you have a impedance problem. With 7 speakers connected to stereo outputs and connected in parallel you would end up with a impedance of 2ohms on one side and approx. 3ohms the other side (providing that they are 8 ohms speakers), which is too low for your amplifier.Most home amplifier do not go below 4ohms total.
There is a few schemes that may clear that problem.
1.You may try to wire your speakers in a parallel/serial configuration that would bring your impedance in a acceptable range but that would leave the seventh speaker out and also it would be hard to balance the sound level evenly.
2. The other solution and probably the best for you is to get some line matching transformers(one for each speakers).
You could mount them behind the speaker cabinet .
There is one thing you have to keep in mind, that is their power handling capacities, for example a speaker in a bathroom would most likely require less power than one in the living room,which brings us to level control,many of those transformers have taps or output level to match your need, also you may need larger transformer for higher level.
This may seem a bit complicated but your local parts dealer may be able to assist you in choosing the right part.
Hope this will help.
Keep volume on ipod up to 3/4 volume. Then use the reciever's volume adjustment for the rest of volume changing. You could also remove the cover and remove all dust in the system. This will also help. You can use a vacuum with soft bristle ends on it or a keyboard vacuum also works well. If this does continue afterwards, then you may want to have some capacitors tested to find the ones not in range and ones that are swollen and about to burn up.
The lower the ohm, the lower the frequency and vice versa. Lower ohm speakers provide more bass which can however draw more power from the receiver.
Higher ohm speakers are like tweeters and draw the very high frequencys and do not require as much power to operate but do not have as much bass. 8 ohms should be the perfect range. Right in between.
Usually home speakers commonly in use are 8 ohms and car speakers are 4 ohms. And it is not good to mix them together like using home speakers in cars and vice versa because of the ohm difference the voice coils can burn out quickly.
Also if you use more speaker than 4. You will want to switch to a higher ohm speaker or you will have system overload. If possible you could also try and find the system protection wire and remove it.
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Check the impedence of the zone 2 speakers and compare to your owners manual. I suspect that you have a speaker or speakers that have a lower impedence than the manual suggests. This causes overdriving of the amplifier which generates too much heat causing the unit to shut down. You might try it with 5 speakers or 3 speakers to see if it still shuts down.
Hope this helps.
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Impedance of speakers is 8 ohms. User's manual impedance range is 4 - 16 ohms. Any other ideas?
Impedance of speakers is 8 ohms. Onkyo receiver user manual impedance range is 4 - 16 ohms. Other ideas?
Impedance for speakers is 8 ohms. Recommended range from user's manual is 4 - 16 ohms. Other ideas?
Shuts off with CD changer playing, too. Surely dust isn't the issue. Works fine when playing cable TV, DVD with surround bar and subwoffer at quite a volume. Only affects anything on Zone 2.
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