MarieonCape
04-11-2004, 07:38 AM
<font color='#000000'>I recently bought the new Denon AVR-3805 receiver. One of the features that caused me to buy it was the auto-setup of the speaker charaterisics, delay, & room EQ settings. This required a seperate microphone, which I was able to buy ($60) at the dealer's yesterday.
I hooked up the microphone and carefully followed instructions. The 3805 went through the test tone/analyze process and in the end reported: "ERROR! the Right/Left Surround speakers are out of phase" (and hence couldn't finish the set up). I didn't think that was possible, I was pretty careful when I replaced the old receiver with the 3805 in making the connections but assume nothing right? So I visually inspected the connections at the speakers and confirmed that on both speakers the "indicator" side of the speaker cable pair was hooked to the red terminal. I inspected the speaker hook up at the back of the receiver and confirmed that the "indicator" side of the speaker cable was attached to red terminals there as well.
That means they should be in phase, right? What else could it be? Since the surrounds are switchable from bipole to dipole I thought that the setting might be fooling the set-up analyzing program so I switched both speakers to the bipole setting and retried - with the same result: ERROR! Surround R/L out of phase.
So maybe it is right somehow. To test I swap the wires from one the speakers at the back if receiver from red to black and black to red and retest. This time it finishes successfully. However in the "confirmation" phase of the auto set up it has identified my surround speakers as "Large". When I initially set up the system I identified them as "Small". The largest driver on the speakers is 4". It can't be "Large". (I reset them to small.)
I am trying to figure where the problem could be. Here are my ideas, any sound right? Is there a better explanation?
1. There is an internal speaker wiring defect. But the second test (external wiring reversed) should have been right - but oddly produced a "Large" size for the surrounds.
2. There is an internal receiver wiring defect. Same as above, reversing the external connections should have compensated, right? The test did finish, but produced "Large" surround speaker type.
3. The auto-setup doesn't work as well as hoped. I was hoping for too much from the relatively new technology, and it isn't going to work. BTW - phase is tested by the tones, not electrically. Bought the new model too soon?
Thanks,
Marie</font>
I hooked up the microphone and carefully followed instructions. The 3805 went through the test tone/analyze process and in the end reported: "ERROR! the Right/Left Surround speakers are out of phase" (and hence couldn't finish the set up). I didn't think that was possible, I was pretty careful when I replaced the old receiver with the 3805 in making the connections but assume nothing right? So I visually inspected the connections at the speakers and confirmed that on both speakers the "indicator" side of the speaker cable pair was hooked to the red terminal. I inspected the speaker hook up at the back of the receiver and confirmed that the "indicator" side of the speaker cable was attached to red terminals there as well.
That means they should be in phase, right? What else could it be? Since the surrounds are switchable from bipole to dipole I thought that the setting might be fooling the set-up analyzing program so I switched both speakers to the bipole setting and retried - with the same result: ERROR! Surround R/L out of phase.
So maybe it is right somehow. To test I swap the wires from one the speakers at the back if receiver from red to black and black to red and retest. This time it finishes successfully. However in the "confirmation" phase of the auto set up it has identified my surround speakers as "Large". When I initially set up the system I identified them as "Small". The largest driver on the speakers is 4". It can't be "Large". (I reset them to small.)
I am trying to figure where the problem could be. Here are my ideas, any sound right? Is there a better explanation?
1. There is an internal speaker wiring defect. But the second test (external wiring reversed) should have been right - but oddly produced a "Large" size for the surrounds.
2. There is an internal receiver wiring defect. Same as above, reversing the external connections should have compensated, right? The test did finish, but produced "Large" surround speaker type.
3. The auto-setup doesn't work as well as hoped. I was hoping for too much from the relatively new technology, and it isn't going to work. BTW - phase is tested by the tones, not electrically. Bought the new model too soon?
Thanks,
Marie</font>