I got the 14.0.2 to load first try. But ORC does so many cuts causes one to drive preamp so high. It’s constantly fry eggs with such a low signal. The P-20 going into protection saved my speakers when I forgot to turn volume down comparing modes with and without ORC. The only way I can use ORC is to DSP the signal before ORC touches it. Otherwise the across the board ORC equalization cuts make me have to overdrive the preamp. Then one hears frying eggs. I swear I need a phono preamp boosting the signal ORC is putting out. Reminds me of hooking a phono into aux input jacks if anyone has ever done that mistake vs phono input.
Thanks for the tip my friend! The Olive curve is nice and warm!
I have 14.0.2 working. Whew!
All hail Edgar!
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What you can try:
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Olive curve, will give you some more bass (+2dB)
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volume control on Bacch have up to +6dB of digital gain. You could use that gain with moderation, to avoid digital clipping. You could also experiment with the volume slider on total mix, which also provides +6dB of digital gain (don’t do both at the same time!). Observe the VU meters to ensure nothing gets past 0dBFS.
I am consulting with Prof Edgar about the Bacch filter Bass cut-off point (which is set by default at 50hz). I feel the Bacch filters is cutting the bass more than the orc filter. Once he finds the time to reply, I will share my results here
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When I have used REW or Acuorate in the past it was best to only pull the peaks down towards a base line but not try to cut everything to the low dips.
6 db of cut was enough before running into the problem you describe.
Another curve to try is +2db at 20, +0 at 500 (or 1000), -6 at 20,000.
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Frequencies below 50Hz are not directional. No need to do any crosstalk cancelation.
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That’s right. But I am thinking on going up, to 150hz, so that the Bacch filters do not affect the mid-bass and deep bass. On those frequencies there would be only the ORC filter. That was my question to Prof Edgar.
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On the setup session, he showed be the Bacch filter frequency response. It’s dead flat on zero. The Bacch filter does not affect tonality by itself. The effects on bass must come from the cross-talk cancelation.
Therefore, my assumption on getting the cut-off higher. I imagine there will be a trade-off between the XTC and the bass response. Only one’s ears can decide which one is better.
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I spent about 30 minutes with Edgar today. I will try moving my speakers out further from front wall to reduce how much ORC is cutting. We also spent time playing with LF cutoff frequency setting. My speakers are designed for being close to front wall I will see how much the plots play nicer. I have a foot and a half to play with front to back and can shift the left speaker so some of its bass gets absorbed in a front corner bass trap.
He also took my plots in the name of researching how ORC addresses challenging set ups.
I wish it were as easy as dialing downs subs. Hello to new bass nulls and optimization of listening triangles.
The small tasks below the Free Field Target curves align with the target plots at where slopes break and ORC applies its cuts and attempts to shape with mild boosts depending where you set them.
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Hi Vmax,
As I explained after looking at your measurements, your bass (20-80 Hz) response without ORC has a very uneven boost of more than 20 dB above the response baseline. That is very far from ideal (and most likely due to the coupling between your woofers and the wall that is too close behind them.) ORC has completely flattened that boost, as it is supposed to do. You were so used to that boost that a 20 dB attenuation (in that low frequency band) needed to properly correct the response sounded jarring.
One of the pitfalls of room correction is that people (including myself) may get very used to a frequency response that is very far from ideal. Correct it, and they may not like it right away (although most do). Leave them with the corrected response for a few days then come to take it away. They will be very upset.
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Just finished my first session with Edgar and am super happy so far, as I gently dip my toe in with software only. I unexpectedly restarted mac, or rather it came unplugged, so it’s good I was doing my best to keep up with the good Professor.
Quick question for the more seasoned veterans: Would the filter be stored in bin 1, 2, or 3? I think we only had time to set-up one, so would guess it’s bin 1. I mean, right?
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It depends where Edgar started. For me first filter was in Bin1. But it is arbitrary any of the three you can use.
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If you build your Bacch filters after ORC (using pass II), look at the bin that states “matched” in white. This should be the one with the filters loaded.
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Edgar must have seen my post and sent me a text of where he was working. So much to learn! Looking forward to taking careful measurements and getting the best filters together.
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It’s always a moving target and system changes as well as DAC and Bacch software changes continue to make it an ever moving target but overall a challenging and delightful experience. I thought I had it cornered until the ORC release. Now more system room work. Think of it as hunting elusive big game where there is never a trophy for permanent display.
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Just upgraded my BACCH DSP Intro to AudioPhile version & webcam! Plus the bonus ORC module!
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Congrats!
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May I ask how big is your room and what xtc levels you get 
?
My listening room is 19’1” x 16’ p” Average CTC is 7.83 left 4.65 Right
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Thanks in advance for pointers. Where do I begin with ORC, and attacking the crossover section of the intro/software only package? How do I feed it details about my set-up? I’ll reach out to Edgar, but thought I’d ask here, too. A knowledge wiki would be awesome since there is no manual to read.