Have bass traps but they are not helping

[Hunter21]

I have bass traps in all 4 corners of the room, and some on the back wall, I dont know if placement is right but I am still getting a huge dip in bass frequency that I can hear and measure, how can I fix this. Room is 19x19 with 8ft ceilings

 

[ryanosaur]

So, bass traps aren't gonna boost nulls or cancellations.

In a square room, you have your work cut out for you.

What is the equipment?
How many Subs?
And where?
Is the room closed off or open to other areas?

 

[lovinthehd]

What bass traps are you using? Pics?

 

[William Lemmerhirt]

Try adding a couple feet to the subwoofer distance and see what it does. Square rooms are really tough acoustically.

 

[William Lemmerhirt]

Also. Try the camera icon and Dave the screen cap. Easier to read...
And as @ryanosaur said traps will not boost nulls.

 

[KEW]

... and Dave the screen cap.

?

 

[William Lemmerhirt]

?

Oops. Proofreader is fired.
“Save” screen cap.

 

[KEW]

Try the camera icon and Dave the screen cap.

Oh, I thought maybe it was a euphemism, like:
Try the camera icon and "Bob's your uncle"!

 

[William Lemmerhirt]

Oh, I thought maybe it was a euphemism, like:
Try the camera icon and "Bob's your uncle"!

Lol. I read it back that way when I looked back.

 

[Hunter21]

I have a yamaha cx-a5000, parasound a21, outlaw model 5000, and paradigm persona 3f fronts, paradigm prestige 45c center, paradigm monitor 7 for years, and a paradigm studio signature sub 12

 

[Pogre]

How did it measure before you put up the bass traps? Did they do anything at all?

 

[Hunter21]

How did it measure before you put up the bass traps? Did they do anything at all?

No I just got the mic and wanted to play around with it and measure the room. The panels have been there

 

[Pogre]

No I just got the mic and wanted to play around with it and measure the room. The panels have been there

I'd be curious what your "before" looked like. I don't have bass traps, but I'm pretty sure there's more to putting them up than just sticking them in the corners and along a wall. They can be over-done too. You might not need all those. Are they semi-permanent or a major pain to take out of the room for a couple sweeps?

As has been mentioned too, square rooms can be a challenge.

 

[William Lemmerhirt]

Do you still have the measuring stuff out? I’d be curious to see if you added a couple feet to the subs if it showed up that trough.

 

[lovinthehd]

I like the idea of taking the traps out for a measure (and maybe even a rethink of sub locations) then reinstall and compare....

 

[Hunter21]

I'd be curious what your "before" looked like. I don't have bass traps, but I'm pretty sure there's more to putting them up than just sticking them in the corners and along a wall. They can be over-done too. You might not need all those. Are they semi-permanent or a major pain to take out of the room for a couple sweeps?

As has been mentioned too, square rooms can be a challenge.

Some are semi permanent but not all

 

[Hunter21]

Do you still have the measuring stuff out? I’d be curious to see if you added a couple feet to the subs if it showed up that trough.

What would I be looking for exactly, and I try to run my fronts as large with the sub on at the same time because I only have one sub.

 

[lovinthehd]

Tell us how you chose the position for the sub for starters? (Hopefully I didn't miss that ).

 

[Hunter21]

Tell us how you chose the position for the sub for starters? (Hopefully I didn't miss that ).

Sub crawl from the couch

 

[TLS Guy]

Looking at you graphs, it seems to me that your sub is at least 8 db too high. Remeasure with the sub turned down 8 db.

Those Persona 3 F speakers speakers, if these measurements from Sound and Vision are correct, are not exactly stellar performers.

From those curves I would try bringing the sub in at 120 Hz as well as turning it down. The speaker curves and sub curve would tend to produce the results you are getting. So I would run the fronts full range and bring in the sub at 120 Hz as well as reducing its output 8 db.

Subs too loud are a very common problem.

If I got those curves from a speaker I designed I would consider it an unfinished speaker and continue with design modifications.

Those curves are from the persona package. Your 3Fs are the purple curve.