Active Room Treatment (ART) by Dirac

[srekal34]

new user of miniDSP Flex DL here : is this version(other than 2chan/multi) of dirac similar to the ART vers ? How so ?
Cheers

MiniDSP is the most basic version of Dirac - then you have Bass Control (which improves multi sub integration). ART is the most advanced version of Dirac, which uses noise cancellation to remove room modes - so its "kind of" like noise cancellation in headphones, but it targets unwanted room response.

 

[zzcraft]

I had a JBL SDP 55 with the 58 upgrades and all services performed on it.

Dante is the digital output system, and it's broken on the JBL units: there are pops from the unit when you have Avio adaptors plugged in to get digital output.

Tested with multiple dongles, multiple network switches, and multiple Genelec speakers.

I performed all troubleshooting steps that Harman support presented to me, but then found out there was a firmware issue they knew about and hadn't been able to fix for over a year.

"Good morning

It's IMS0024523 -- it has indeed been reproduced. The DSP engineers work on the Dante side of things, too, but if there are any DSP updates, it'll be to resolve that, if they're able to do so."

This was from September of last year. Just sold it a month ago to someone using the XLR outputs, but the JBL SDP 55 is broken with Dante and it's not resolvable with the Dante adaptors to get AES/EBU from Genelecs.

Other people say they aren't experiencing this with Dante enabled amps, and maybe that's true, but I'm not sure what solution one would use for 8 channels of Dante to AES for a reasonable price.

I'm now using a Monoprice HTP1... Which is also likely busted as biased/auto/etc switching on the inputs doesn't resolve the intermittent silence issue from an Nvidia Shield or Nintendo Switch.

Sometimes I miss my $200 Dolby DP564. It could only decode Dolby formats, but had digital+analog output and didn't have the issues like these other units costing 20x as much.

Doesn't matter if the SDP 55 or the HTP1 support ART, which I really hope for, if they have issues like this.

Just wish Genelec would make a surround decoder that actually worked, as my next option will likely be WiSA dongles for everything.

I experienced the similar issue with the dante pops issue on sdp-55. But I kind of workaround it by set the sdp55 as clock master and there are about 50/50 chances that pops are gone when my sdp55 powered up. If not, I would just redo power cycle of the sdp55. Meanwhile I have to disable all the standby features to keep sdp55 power on all the time when I got a clean result. The root cause of this dante pop issue is that sdp55 internal master clock is not properly in sync with dante BK2 card MCLK. The workaround fix from JBL as far as I know is to bypass unit's internal clock source and use dante card MCLK instead by applying a flyover wire.

This unit is buggy for sure but it is the most cheap unit that I can find capable of decoding dolby atmos/DTS-x and can do 16 channels output through dante. Also it has nice feature like ROON ready and spotify connect. Overall I am happy with it .

It is important for me to have dante capable AVR because I want to use external DAC(smsl d6s) and qsc proccessor to do room eq and have the highest SINAD out of dac.

 

[speakers4me]

Does anyone have a general idea of how much headroom our subs, mains, or surrounds need below 150hz to implement Dirac ART? 3db? 6db?

 

[jtatknox]

Does anyone have a general idea of how much headroom our subs, mains, or surrounds need below 150hz to implement Dirac ART? 3db? 6db?

My impression is that the anti-wave energy input is low since in most support levels it should be inaudible. Did I understand your question?

 

[dlaloum]

My impression is that the anti-wave energy input is low since in most support levels it should be inaudible. Did I understand your question?

That is my impression too... it doesn't need to totally cancel, dropping the undesirable waves by 10db or so would probably be enough to make a huge difference... so we aren't talking about massive anti-waves

 

[neRok]

low since ... inaudible

It's lower, but it's not so low as to be inaudible if it were playing on its own. It's "inaudible" because it's timed to fire an anti-wave at a specific moment to "oppose" (cancel) a direct-wave.

 

[tjcinnamon]

I really wish someone with ART, would run an REW sweep with their subs off so we could see the support speakers amplitude and delay.

 

[tjcinnamon]

I really wish someone with ART, would run an REW sweep with their subs off so we could see the support speakers amplitude and delay.

I asked on AVS again. We’ll see

 

[Infinit0]

Does the Bass Control makes sense for a 3 way stereo setup? Or is only for subwoofers

On the other hand, anybody knows if someday in the future ART Will be available on PC? Since I only use my PC as source for my hi fi setup

 

[Kal Rubinson]

On the other hand, anybody knows if someday in the future ART Will be available on PC?

It will. I have been running beta versions for a while now.

 

[IamJF]

It will. I have been running beta versions for a while now.

Can you give some more information about that?
How is the "interface" on the PC? Virtual sound card or ASIO pluging or something different? How many channels are supported?

I will start rebuilding my listening and mixing room soon, with Dirac ART running on the computer I would plan 2-4 subs back in the room to control the last resonances <100Hz.

 

[Kal Rubinson]

Can you give some more information about that?
How is the "interface" on the PC?

Somewhat the same as it is with DL-BC. Not as snazzy as the Storm GUI.

Virtual sound card or ASIO pluging or something different?

Both (or either).

How many channels are supported?

9.1.6 or custom. I am running 5.3 at the moment.

 

[tehas]

It will. I have been running beta versions for a while now.

Is there a secret handshake to convince dirac to give you access to these betas? I've tried asking in the past, to no avail.

 

[Davide]

It will. I have been running beta versions for a while now.

Interesting news. Is there any terms of confidentiality regarding measurements and subjective opinions?

 

[Kal Rubinson]

Is there a secret handshake to convince dirac to give you access to these betas? I've tried asking in the past, to no avail.

Dunno. I asked and got it. I know others that have, as well.

Interesting news. Is there any terms of confidentiality regarding measurements and subjective opinions?

Dunno. I have made some casual comments but I will not comment in detail until it is a public product. OTOH, I do use it every day.

 

[Infinit0]

Amazing.
Hope they add the support of ART with current license without extra cost
Bought mine yesterday since my only source of movies and music is my MiniPC

 

[goryu]

Amazing.
Hope they add the support of ART with current license without extra cost

Dream on....

 

[ban25]

Amazing.
Hope they add the support of ART with current license without extra cost

The license has been available for purchase on dirac.com for over a year now. It's $299, in addition to the cost for Dirac Live and Bass Control.

 

[tehas]

Dunno. I asked and got it. I know others that have, as well.

Dunno. I have made some casual comments but I will not comment in detail until it is a public product. OTOH, I do use it every day.

I'll give it another shot, maybe I need to be more persistent.

 

[alvigg]

It will. I have been running beta versions for a while now.

Does you stating that you are beta testing mean it is close to be released to the masses, e.g. Denon Marantz?