Nice work there, have you ventured into the waterfall plot yet ? Before and after readings

11 hours ago, playdough said:

Nice work there, have you ventured into the waterfall plot yet ? Before and after readings

 

He will send a report with all the measurements results to me, I only took a quick picture of those two measurements, during the process.

@Bass13

Yes, great idea it would give you a look at the actual decay times in room at any given frequency and most likely where any further room treatments could focus. Otherwise the room looks excellent.

Cheers

Matt

 

Finally treatment has arrived....One small step for mankind, one giant leap for me 🙏🎼

 

 

 

Edited April 5, 2025Apr 5 by Bass13

On 05/04/2025 at 12:04 PM, Bass13 said:

Finally treatment has arrived....One small step for mankind, one giant leap for me 🙏🎼

 

 

 

 

I'll preface this post that IMHO, managing the "in room" bass response should be a primary goal for achieving great "in room" sound, whether by room treatment/EQ/placement etc.

Get the "in room" bass under control, and IMHO you're 80% done with achieving great "in room" sound.

 

I'm not sure what treatment you have in there, and apologies if this is telling you to suck eggs, but any absorption treatment targeted at lower frequencies will work better/lower if gapped from boundaries.

 

This is because absorption treatment works by slowing down the air particle velocity of the sound waves, and at a rigid boundary, the air particle velocity is zero. Away from the boundary, air particle velocity is >0, and in the modal region of the room, the maximum velocity is wavelength/4 from the boundary, and this is the best position to place absorption treatment (ie highest velocity). 

 

Unfortunately managing "in room" bass with only absorption requires larger/deeper/more gapped traps the lower in frequency you need to manage...and absorption gets really big/deep/gapped to absorb lower than 150Hz or so.

 

In my lightly constructed room, where all the low bass leaks out, I have a bunch of absorption that works excellently down to around 150Hz or so, and I use EQ cut below that to further the manage the bass in my room.

 

For managing "in room" bass, straddling corners with absorption works well, and it doesn't matter much which corner is straddled...it all helps.

 

Mike

15 hours ago, almikel said:

 

I'll preface this post that IMHO, managing the "in room" bass response should be a primary goal for achieving great "in room" sound, whether by room treatment/EQ/placement etc.

Get the "in room" bass under control, and IMHO you're 80% done with achieving great "in room" sound

 

Unfortunately managing "in room" bass with only absorption requires larger/deeper/more gapped traps the lower in frequency you need to manage...and absorption gets really big/deep/gapped to absorb lower than 150Hz or so

 

As you said above, Managing the "in room" bass response was my primary focus, which is extremely difficult to do, without  a massive amount of big thick, panels to absorb 150 Hz or below.

 

I haven't got the room to do this, "Nor would my wife let me, if I did" so I opted to use a pair of PSI AVAA CC214's active bass traps, which apparently , eliminates excess bass resonances from 15 Hz to 160 Hz, they are adjustable via an app, hopefully that will sort out or help keep the bass under some sort of control, in my room with my treatment.

 

I will know soon enough if all this stuff was worth it or not.

 

 

Edited April 13, 2025Apr 13 by Bass13

On 14/4/2025 at 5:14 AM, Bass13 said:

... I opted to use a pair of PSI AVAA CC214's active bass traps, which apparently , eliminates excess bass resonances from 15 Hz to 160 Hz, they are adjustable via an app, hopefully that will sort out or help keep the bass under some sort of control, in my room with my treatment.

 

I will know soon enough if all this stuff was worth it or not.

 

$12,000 for a pair, I hope you get satisfaction! 

 

I saw a review of them that concluded, "...having established that four C214s working was the best option objectively, it also proved the best subjectively, but the improvement brought by just two C214s was very noticeable and worthwhile". link

 

As promising as that is, in case any other readers are hanging out for the result of your experience, I would suggest that for a fraction of the investment it would be worth discussing options like multiple affordable subs and DSP.

 

cheers

Grant

1 hour ago, Grant Slack said:

 

$12,000 for a pair, I hope you get satisfaction! 

 

I know it was not a cheap investment, I felt sick myself.... had to stop a couple of other hobbies to fund this, and yes I hope I did do the right decision.

 

1 hour ago, Grant Slack said:

 I would suggest that for a fraction of the investment it would be worth discussing options like multiple affordable subs and DSP.

 

 

I did look at this and is still a possibility down the track "for some icing on the cake so to speak", when funds permit, but unfortunately the subs I liked were not cheap either.

Edited April 15, 2025Apr 15 by Bass13

11 hours ago, Bass13 said:

I know it was not a cheap investment, I felt sick myself.... had to stop a couple of other hobbies to fund this, and yes I hope I did do the right decision.

 

 

I did look at this and is still a possibility down the track "for some icing on the cake so to speak", when funds permit, but unfortunately the subs I liked were not cheap either.

wow, the things we do to keep the boss happy!

 

I'm sure @playdough would have been happy to provide guidance on some limp mass bass traps that would have been effective...but they would have been large and deep also...

 

I'm extraordinarily glad I have a lightly constructed room where all the low bass leaks out, and a tolerant family/neighbours for when the wick gets turned up!

 

Mike

11 hours ago, almikel said:

I'm sure @playdough would have been happy to provide guidance on some limp mass bass traps that would have been effective

Hey Mike, the lounge that was a lot of fun, here is a link to a thread of the build. 

It wasn't all that scientific, but it was finished. 🙂 Measurements indicated treatment co efficient <1200Hz, for the 180mm protrusion into the room.

 

After all said and done, the 3 large membranes, side walls and front, some 12m2 was an excellent addition to the space, treating for comb filtering caused by wall boundaries. Seamed to treat some lower bass nodes to a  degree and heavy/structural enough to relieve an otherwise "booming area" or "room pumping". reasonable diy solution for typical timber house acoustic problems, big job tho.

 

On 16/04/2025 at 10:45 AM, playdough said:

It wasn't all that scientific, but it was finished.

but it was finished 👍

On 16/04/2025 at 10:45 AM, playdough said:

Measurements indicated treatment co efficient <1200Hz, for the 180mm protrusion into the room.

 

I went back and re-read the thread - great job!

 

On 16/04/2025 at 10:45 AM, playdough said:

Seamed to treat some lower bass nodes to a  degree and heavy/structural enough to relieve an otherwise "booming area" or "room pumping". reasonable diy solution for typical timber house acoustic problems, big job tho.

 For me limp mass traps are all about "bass trapping", but with a lower Q/broader operating frequency than other "membrane"/pressure traps...but they still need to be large/deep to be effective...unfortunately without the same design calcs available like say QRD diffusers 😞

 

@Bass13 - how are your active bass traps going?

 

Mike

14 hours ago, almikel said:

 

@Bass13 - how are your active bass traps going?

 

Mike

 

Hi Mike,

 

Yea, with a bit of positioning and testing, they are working very well, the system is sounding exceptionally well, this is probably a combination of the active bass traps & room treatment combined. The measurements also looked better than they were, my ears could tell even without looking at them.

 

I'm pretty much done, besides for a couple of things I will be doing/trying/testing, I just want to enjoy my system & relax now, and get back to doing some work on the house as I promised my Mrs for all the things shes put up with me doing lately...🙏

Edited April 26, 2025Apr 26 by Bass13

1 hour ago, Bass13 said:

Yea, with a bit of positioning and testing, they are working very well, the system is sounding exceptionally well, this is probably a combination of the active bass traps & room treatment combined.

@Bass13 would you mind sharing how the setup "looks"?

On 27/04/2025 at 11:23 AM, oukouk said:

@Bass13 would you mind sharing how the setup "looks"?

 

Ok, Here's a couple pictures 

 

 

Just waiting on my stands for my other six Siena panels on the left, to mimic the right hand side Siena wall panels.

 

 

Edited April 28, 2025Apr 28 by Bass13

20 minutes ago, Bass13 said:

 

Ok, Here's a couple pictures 

 

You're very kind - that looks GRAND.. 🤩

Edited April 27, 2025Apr 27 by oukouk