Yamaha V2500 fails the auto setup with sub

[alpharetta]

Dear all experts,

I have Yamaha V2500 and Axiom Epic60.500 speaker set. All they are brand new I bought last week. The auto setup of the receiver is excellent for a newbie like me. I notice that the auto setup confirm successfully when I do the test without the subwoofer.

However, the issue comes when I plugin the sub. It's not really the Error according to Receiver manual, it just the Warning "W3" about the "Level Error". It says "The different in volume level between the speakers is excessive. No level correction is made". I then get to detail information of Level testing, the info was:
Front R: 1.5 dB
Front L: -0.5 dB
Center: 1.0 dB
Surr R : 0.5 dB
Surr L: -0.5 dB
Sub Woofer: < -10dB
exceed +/- 10 dB

So the issue defenitely come from sub woofer. What I should I adjust?
Please advice.
Thanks

 

[MACCA350]

I beleive its telling you to turn the subs volume down at the sub, because it cannot turn it down anymore at the receiver. You can always turn the sub back up later if thats how you like it.

cheers

 

[alpharetta]

I adjusted the sub volume

Thanks a lot bro. I took your advice and turn down the sub volume. and this time the auto setup passed sucessfully. I guess that my sub is too powerful for other speakers. However I notice that the Yam Auto setup calculates the sub distance not right. real distance is about 10 f, but receiver measure it 27 f!!!!!

 

[MACCA350]

There is a slight delay in the subs electronics and this differs from sub to sub depending on the design and electronics involved. It dosent take much of a delay to effect the setting as 1 millisecond delay = 1 Foot in distance.
Another thing that will effect the distance measured by the receiver, apart from placement, is the phase control on the sub, flip this 180deg and run the auto setup again and the distance will change.

The receiver reads the actual time it takes for the sound to reach the mike and adjusts the delay time to time align all the speakers and this will be more accurate than doing it by the actual measured distance.

cheers

 

[MACCA350]

Found this is from Denon's white-paper on their Audyssey MultEQxt system:

7. My subwoofer is physically closer than the distance reported by MultEQxt. Why?
Many powered subwoofers do not provide the capability to defeat the built-in low-pass filter. These filters, by their nature, introduce additional delay in the signal and MultEQxt finds that and reports it. The optimum solution is to turn the filters off (often called “LFE mode” in subwoofers). If that is not possible, set the low pass frequency to the highest possible setting and leave the distance reported as it. MultEQxt will compensate for the added delay and time align the subwoofer to the satellite channels so that the optimum blend is achieved.

cheers
PS I know this is an old thread, I just thought I'd add it here instead of starting a new thread.