Audyssey results: FR extreme dip

[Bucking]

I've just setup my new 5.2 setup and ran a quick 3 point Audyssey measurement (all at MLP).

However the results were a bit surprising.

My fronts and center (Q350) are on an IKEA besta TV board and are as far away from the wall as possible (roughly 12cm) without port plugs. Placement of these speakers is nearly identical. But the FL is at the end of the wall (As you can see in the pictures)
But I get a massive dip between 200-300 hz with my FR speaker.

I've read that if you can't put the speakers far away from the wall that you should put them closer to it. Could that benefit me in this situation?

Any recommendations regarding placement or other things are welcome

 

[staticV3]

I'd plug the ports anyway, might as well see if it helps with room modes.

Moving the speakers may help, but it's not guaranteed. You'll just have to try and see.

I'd be more concerned about what Audyssey is doing tbh.

Flat frequency response from 40Hz to 3kHz is likely too bright, plus what's that 2kHz dip that Audyssey is inserting into both channels?

 

[Bucking]

I won't use standard Audyssey anyway. I'm using A1 Evo by OCA so it won't matter.

Thanks I'll definitely try both things

 

[Bucking]

So I moved the speakers and tried the port plugs, but I sadly still get these huge dips with my FL speakers.

Could this be something wrong with the cables or is that unlikely?

 

[staticV3]

Could this be something wrong with the cables or is that unlikely?

It's definitely not the cables. Just the reality of playing speakers in an enclosed space.

Room modes are inevitable.

 

[dweeeeb2]

So I used periodic pink noise to position my speakers. Set the mic at MLP, position laptop where you can easily see the screen and use RTA in REW. This way you can just watch how the FR changes as you move the speaker.

 

[Bucking]

Thank you both. I may have to try other mlps.

I found some older measurements with the speakers in the same positions without the huge dips. But I used all 8 measurement points back then with more spacing between them.

Sadly I can't really move the speakers nor the mlp elsewhere :/

 

[Keith_W]

Everybody gets those peaks and dips. It is normal. What I notice about your dip is that it is not particularly wide. If you have access to REW (which you probably do since you are using @OCA's A1 Evo), do ERB smoothing and see if the peak disappears. If it goes away, then you probably can't hear it. Remember: microphones do not hear the same as ears.

 

[voodooless]

plus what's that 2kHz dip that Audyssey is inserting into both channels?

I think that's what Audyssey used to do on older AVR models. Also, the flat curve can be adjusted a bit by choosing the "Reference" setting.

As for the dips, as others said, that is normal, as long as they are very narrow, you won't hear them, so don't worry.

 

[Bucking]

Everybody gets those peaks and dips. It is normal. What I notice about your dip is that it is not particularly wide. If you have access to REW (which you probably do since you are using @OCA's A1 Evo), do ERB smoothing and see if the peak disappears. If it goes away, then you probably can't hear it. Remember: microphones do not hear the same as ears.

This is what the FR looks like with ERB smoothing. I'm not exactly sure if this is acceptable or not

 

[Bucking]

Also another question, since the speakers are placed on a cabinet would I benefit of getting bigger feets/pads for the speakers?

I currently have the small standard KEF feets on them. (Except for the center, that's angled slightly upwards with some anti slip feets for furniture)