GIK244 worthwhile behind speakers on front wall?

[seangoodman]

could somebody please offer an opinion on the attached Mdat, one measurement is with nothing behind the speaker and the other with a home made pad of Isover insulation wool wrapped in a bit of thin cloth 140cm high x 50cm wide and 10cm think placed up against the front wall behind the speaker.
the aim was a mock up test to see if adding a GIK244 here (other side as well) would offer benefit before splashing out cash.

to me frequency responce, waterfall and spectrogram don't look too different but it strikes me that the impulse is quite well improved.

would you say it was worth investing in a couple of 244s based on this measurement?

many thanks
Sean

 

[Johnnie]

I am by no means an expert but, do you have a 4 inch space gap from the panel to the wall. I just watch this on several seminars of having the same air space thickness behind the panel as the panel. It makes a 4 inch panel almost an 8 inch panel making it perform much better

 

[DanDan]

This happens very often. I believe the reason for the deterioration or 'whatever' is the relatively small area of fibre.
LF just doesn't see it.

 

[Johnnie]

This happens very often. I believe the reason for the deterioration or 'whatever' is the relatively small area of fibre.
LF just doesn't see it.

Yes, agreed. Quantity of panels is the name of the game when it comes to taming bass

 

[FargateOne]

This happens very often. I believe the reason for the deterioration or 'whatever' is the relatively small area of fibre.
LF just doesn't see it.

agree! But as you noted some early reflexions have been tamed which is good. For bass if you could treat only one tri-corner (ceiling and 2 walls for instance) you would see marvels happening...imagine 8 tri-corners!

 

[ddude003]

If I am doing the conversion from cm to inches math correctly, the LF absorber panel you made is a little over 4 feet by 1.5 feet by almost 4 inches thick... And you want to compare that to a LF absorber panel being 4 feet by 2 feet by 5.25 inches thick... And you ask if it is worth investing in a couple of GIK244s... Yes, any investment in room acoustics is worth it... I would start with 4 of the LF GIK244s with strike plates...

I am a happy consumer of a couple of the GIK Acoustic Art panels...

 

[DanDan]

agree! But as you noted some early reflexions have been tamed which is good.

Nope. In the way we normally use the term, there are no early reflections behind a speaker.