Assistance understanding YPAO setup

[Hunter]

Hi all.
Is anyone able to help me understand the YPAO setup pictured here please ?

FL

https://imgur.com/a/4380CR4

View: https://imgur.com/a/4380CR4


I truly don't understand how the 125Hz frequency has been set at 3 different Q values and 3 different gains.

For comparison -

FR

https://imgur.com/a/rriuIOu

View: https://imgur.com/a/rriuIOu
.

Thanks, any advice is greatly appreciated.

 

[Jasonovich]

I'm a Denon person, not really familiar with YPAO, why do Yamaha make it so complicated or maybe they do it right!

Not sure this helps but I've picked up some links, hopefully provide you with some useful information or steer you in the right direction.

I'm sure others on this forum we'll come on later with more expansive knowledge on the workings of YPAO.

Good luck!

Simple Home Cinema - Bringing Your Entertainment to Life

I will show you how to tweak YPAO R.S.C. manually.

simplehomecinema.com

How to Calibrate Your AV Receiver with YPAO™ - Yamaha Music

Learn how to calibrate your audio system with Yamaha Parametric room Acoustic Optimizer (YPAO) technology.

hub.yamaha.com

Simple Home Cinema - Bringing Your Entertainment to Life

Good sound is dependent just as much on doing the setup correctly, than it is on buying great gear. In this guide, I show you how to get the very best out of your Yamaha Receiver by configuring YPA…

simplehomecinema.com

Ypao Mic Setup Guide for Yamaha Receivers - Support.com

Optimize your home audio with the Ypao setup guide for Yamaha. Ensure crystal-clear sound with Ypao calibration tips.

www.techsolutions.support.com

 

[twinkletoes]

If I under stand your question correctly! quite simply It all has to do with your room and your speaker placement in relation to the that room. So the boost could be that there is a "softer" material at that point in the room or a harder surfaces like a window you would see negative number for instance. And speakers arn't all alike even when paired at the factory and maybe the mid driver needs a little help in that area.

OR and this wouldn't be unusual and is why I dont trust these auto EQ features, its quite simple wrong. I used to use room eq measurement software in tandem with a high quality precision microphone and make manual adjustments.

There are so many variables that could make that number appear. House not 100% quite, it could hear you breathing, fridge cut in, plan flew over all that jazz.

But is it wrong? thats the question and without another point of reference you'll never know all you can do is rerun it.

 

[Hunter]

Thanks for the replies. I will run the cal again.
My specific confusion wasn't the difference between left and right channels, it was how the same frequency can be given three different gains.
At the moment, the best sound seems achieved by selecting "through" mode, which is no eq applied. Given this, I agree that the auto cal doesn't seem to provide a benefit in my case.
For context it's an RX-V685 with mordaunt- short 908 floor standing fronts.

Thanks again.

 

[Hunter]

Oh and thanks very much for the links, I'll definitely have a read

 

[twinkletoes]

Thanks for the replies. I will run the cal again.
My specific confusion wasn't the difference between left and right channels, it was how the same frequency can be given three different gains.
At the moment, the best sound seems achieved by selecting "through" mode, which is no eq applied. Given this, I agree that the auto cal doesn't seem to provide a benefit in my case.
For context it's an RX-V685 with mordaunt- short 908 floor standing fronts.

Thanks again.

its hit or miss, for what is supposed to be a plug and play system there is normally alot of associated faff as you'll read in the links

 

[Deliriumbassist]

The Q changes how much around the frequency is also raised - think of it as how wide the hump is. So by combining multiple humps, it's further shaping the response. The higher the Q, the narrower the hump.

What that's going to do to phase is another question entirely, but what you're seeing is not technically out of the ordinary. The graphic is rather low resolution as well, in terms of smoothing, so it may not be immediately apparent what is happening.

5.5dB gain is also a LOT, and I question how that's going to be helping at that frequency. I almost guarantee that is corresponding with a room mode, which CANNOT be EQ'd out, due to the nature of standing waves. Work on speaker placement - we want the EQing to be as minimal as possible, and preferably cuts rather than boosts.

 

[Hunter]

The Q changes how much around the frequency is also raised - think of it as how wide the hump is. So by combining multiple humps, it's further shaping the response. The higher the Q, the narrower the hump.

What that's going to do to phase is another question entirely, but what you're seeing is not technically out of the ordinary. The graphic is rather low resolution as well, in terms of smoothing, so it may not be immediately apparent what is happening.

5.5dB gain is also a LOT, and I question how that's going to be helping at that frequency. I almost guarantee that is corresponding with a room mode, which CANNOT be EQ'd out, due to the nature of standing waves. Work on speaker placement - we want the EQing to be as minimal as possible, and preferably cuts rather than boosts.

The FL placement is compromised by its proximity to the wall, an issue the FR doesn't have, i really have no other option in this regard.
Thanks very much for the advice, I'm happy enough with the sound in "through" mode, I'm likely agonising over it too much.

 

[manicm]

Is this a stereo amp? Can you get satisfactory results without using YPAO?

 

[Hunter]

Is this a stereo amp? Can you get satisfactory results without using YPAO?

It's an AV receiver but I run it in "straight" mode, so yes it's in 2-channel when listening to tidal/Spotify etc.
It sounds good without eq (Yamaha calls it "through" mode) but given the constraints of the room I can imagine some correction would yield benefits.
I might be falling into the trap of trying to achieve some notion of perfection.

 

[Deliriumbassist]

The FL placement is compromised by its proximity to the wall, an issue the FR doesn't have, i really have no other option in this regard.
Thanks very much for the advice, I'm happy enough with the sound in "through" mode, I'm likely agonising over it too much.

Even a matter of inches can make a difference, if you have that to work with. Sometimes it's even better to go closer to a wall - rooms have 'dead zones' that sit within the perimeter of the room. Stand with your back to the wall and talk in a deep voice. Keep talking, and shuffle off the wall - cm by cm. After about 6" or so, you'll hear the power in your voice drop out. Keep shuffling further, and eventually you'll hear it come back. If your speaker is in that zone, and you can move it towards the wall instead, give that a try. If it tames down that 5.5dB boost, it's a help.

 

[Hunter]

Even a matter of inches can make a difference, if you have that to work with. Sometimes it's even better to go closer to a wall - rooms have 'dead zones' that sit within the perimeter of the room. Stand with your back to the wall and talk in a deep voice. Keep talking, and shuffle off the wall - cm by cm. After about 6" or so, you'll hear the power in your voice drop out. Keep shuffling further, and eventually you'll hear it come back. If your speaker is in that zone, and you can move it towards the wall instead, give that a try. If it tames down that 5.5dB boost, it's a help.

Very much appreciate the help, I have no more inches to play with unfortunately.

https://imgur.com/a/TYcaUM1

View: https://imgur.com/a/TYcaUM1


I can adjust the gain value easy enough, I was mainly confused that eq bands 2, 3 & 4 were all 125Hz but had different gain values.
I can maybe understand the explanation above regarding the different Q values further modifying the curve but a given frequency having 3 different amplitudes Is above me I think.
I have toed the FL in a little more, I'll re-do the cal and see what results.
Thanks again, very helpful community here.

 

[Hunter]

I had another go at YPAO and FL results were similar to before, FR notably different (was quite flat prior, now more extreme, similar to FL)
Given that running with no eq sounds better ( to my ears anyway) I'll manual tweak the eq from flat, instead of tweaking the YPAO values that I'd copied to manual.
Need to get back to listening instead of agonising.