I've got a GIK 244 Bass Trap for Christmas and took the time do do some measurements and would love some feedback and suggestions.
I'm using 2x Swissonic A306 connected and crossed over at 80Hz via a SVS SB-1000.
My Dac and DSP is a Qudelix 5k. (The Speakers also have a build in ADAU1701 DSP that I haven't yet touched)
My comment has a lot of pictures and short text snippets so I tried to mark all import info and questions as bold.
First a RTA measurement of both speakers playing (64k, 1/48, No Smoothing, 50x Avg., Hann, 93.75%).
In pink and blue you can see the EQ and on Axis response (taken from Erins Spinorama)
Here are L/R RTA:
The Dip at 80Hz in the Left channel is caused by a Crossover issue that I can't fix till I get another DSP with separate Channels for Speaker and Subwoofer :/
They said on the Forum for my current DAC that they might get this feature implemented via the balanced out to 3 separate Channels.
Is such a big difference in the Treble normal for a small, asymmetrical room?
I've tried EQing it but the all results changed the imaging and tonality too much.
I'm at ~1.5m Distance - is it fair to assume that the flat Direct sound dominates the perception so much that it doesn't matter?
Picture of my Setup (behind the seat on the wardrobe is the new Absorber) + Rough Room Layout :
Here are 2 repeated single point measurements of both channels playing, with me outside of the room to minimize variance - The Phase seems to have changed a lot in the treble, is this normal?
Is the Phase good looking and are there some realistic Targets and how to get there?
Is FIR filtering useful if I have such a seemingly high variance in the Phase?
Any good links talking about Phase would be appreciated!
Here is the Impuls Response before and after adding the Panel:
The Old measurement is at a slightly different mic position and without a PEQ at 380Hz on the R Channel.
The Level changed by 2dB between the measurements by accident.
The Peak at ~0.5ms is likely caused by the mic stand I used since at the exact distance that would cause this peak in the impulse response. (2x11cm)
What are your Thoughts on the Impuls Response?
How does your System measure for comparison?
Is the downwards peak and waviness in the beginning a potential issue worth fixing? Could it be caused by the build in DSP in my Speakers?
Here is the FR of both measurements in case it's needed:
Here is the RT60 (Red = Before):
I plan to buy another Subwoofer when I've got the Money for it and a MiniDSP 2x4 for a proper Multi Sub with good integration. Do you expect it to potentially fix the Big Standing Wave at 36Hz?
Are these Targets what you'd recommend as well for a residential Setup or are they more meant to be used in a Studio?
Here are the Values with a Room of my Size:
Is the increase at around 200Hz something I should try to fix or would you say that's fine?
Here is the Fourier Spectrogram:
Anything worth pointing out?
Here is the Wavelet - can someone please explain what I'm looking at since I haven't found any explanations online that help me understand:
Are the Results good - anything I can conclude cause of it?
Need to fix anything?
Tell me if you need any other measurements and I'll send them if possible
Thanks in Advance to anyone answering!
I'm using 2x Swissonic A306 connected and crossed over at 80Hz via a SVS SB-1000.
My Dac and DSP is a Qudelix 5k. (The Speakers also have a build in ADAU1701 DSP that I haven't yet touched)
My comment has a lot of pictures and short text snippets so I tried to mark all import info and questions as bold.
First a RTA measurement of both speakers playing (64k, 1/48, No Smoothing, 50x Avg., Hann, 93.75%).
In pink and blue you can see the EQ and on Axis response (taken from Erins Spinorama)
Here are L/R RTA:
The Dip at 80Hz in the Left channel is caused by a Crossover issue that I can't fix till I get another DSP with separate Channels for Speaker and Subwoofer :/
They said on the Forum for my current DAC that they might get this feature implemented via the balanced out to 3 separate Channels.
Is such a big difference in the Treble normal for a small, asymmetrical room?
I've tried EQing it but the all results changed the imaging and tonality too much.
I'm at ~1.5m Distance - is it fair to assume that the flat Direct sound dominates the perception so much that it doesn't matter?
Picture of my Setup (behind the seat on the wardrobe is the new Absorber) + Rough Room Layout :
Here are 2 repeated single point measurements of both channels playing, with me outside of the room to minimize variance - The Phase seems to have changed a lot in the treble, is this normal?
Is the Phase good looking and are there some realistic Targets and how to get there?
Is FIR filtering useful if I have such a seemingly high variance in the Phase?
Any good links talking about Phase would be appreciated!
Here is the Impuls Response before and after adding the Panel:
The Old measurement is at a slightly different mic position and without a PEQ at 380Hz on the R Channel.
The Level changed by 2dB between the measurements by accident.
The Peak at ~0.5ms is likely caused by the mic stand I used since at the exact distance that would cause this peak in the impulse response. (2x11cm)
What are your Thoughts on the Impuls Response?
How does your System measure for comparison?
Is the downwards peak and waviness in the beginning a potential issue worth fixing? Could it be caused by the build in DSP in my Speakers?
Here is the FR of both measurements in case it's needed:
Here is the RT60 (Red = Before):
I plan to buy another Subwoofer when I've got the Money for it and a MiniDSP 2x4 for a proper Multi Sub with good integration. Do you expect it to potentially fix the Big Standing Wave at 36Hz?
Are these Targets what you'd recommend as well for a residential Setup or are they more meant to be used in a Studio?
Here are the Values with a Room of my Size:
Is the increase at around 200Hz something I should try to fix or would you say that's fine?
Here is the Fourier Spectrogram:
Anything worth pointing out?
Here is the Wavelet - can someone please explain what I'm looking at since I haven't found any explanations online that help me understand:
Are the Results good - anything I can conclude cause of it?
Need to fix anything?
Tell me if you need any other measurements and I'll send them if possible
Thanks in Advance to anyone answering!