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And apparently according to a reply of his on ASR (see below) I have an "Irrational hatred of Elektra and DEQX" because I questioned his incorrect assertions on his knowlege of the current generation of SHARC DSP's along with evidence from three esteemed sources questioning the validity of using linear phase filters in multi-way non coicidenence loudspeaker designs !! Somehow that makes me irrational does it ?? Well Keith, you seem to have forgotten the eephant in the room and that is Conan the Destroyer from stereonet who plots all of these underhanded tactics in order to play one local vendor off at the expense of the others in order to maximize his profits from the ones that pay him

I mean I'd really hate to be a local manufacturer of amplifiers and sponsor on stereonet or even a dealer of imported ones when all of these shananigans were going on, wouldn't you ??

https://analog-precision.com/forum/the-dark-room/re-the-worst-case-of-anti-competitive-behavior-we-have-ever-seen-in-this-industr/

NHT XdS driven by XdA (DEQX), equalized step response on tweeter axis at 50" (5ms time window, 30kHz bandwidth).



Also to get to this response the reponse from the two drivers needed to be added together but studying the corrected responses in isolation reveals that the summation is imperfect and the sunned response does not sum to a clean step response compared to the passive Xover Dunlavy's below. Tsk, tsk,tsk.... !!





Dunlavy SC-VI, step response on tweeter axis at 10' (5ms time window, 35kHz bandwidth).



As one can see from above the passive crossover Dunlavy speaker design more closely aproximates a step reponse than the fully active DEQX corrected DSP design. Sometimes less is better !

Please click on the following link for the latest firmnware updates for the UP1,UP2 and UPP.

https://analog-precision.com/forum/firmware-updates/current-firmware-update/

He's blindly endorsing a product with unknown hardware capabilities as well as in his own words "is too expensive" so most likely is not going to buy one but still endorses it none the less. WTF !!

Seriously if this is not a conspiracy to shill a product for the benefit of stereonets coffers then I don't know what is. I can almost guarantee he started a thread on this product on ASR to steal away prosppective customers from a competing product from another vendor (which btw is similar to our own product) and it's not the first time they have done this as I should know because they did a similar thing to me when I was running a pre-order on diyaudio a few years ago. And a thread on this competing product was also started on stereonet recently and not surprisingly he was there bagging it as well which is so predictable

And don't believe everything you read or hear from DIQX especially when it comes from someone with only a marketing background which in his own words says he doesn't know anything about designing speakers and yet he wants to tell everyone how it should be done. The proof is in the eating of the pudding - no serious commercial louspeaker designer embraces what they endorse and this is the reason why

https://analog-precision.com/forum/news-updates/why-we-would-never-use-a-deqx-to-build-a-loudspeaker-!/

Marc, you couldn't wait for another year to celebrate 21 years like DEQX did ?? Seriously LOL

[The best of Australian – maybe the best in the world! This unmissable audio suite will host Duntech's brand-new Princess loudspeakers – $120,000 floorstanders that take their lead from the company's legendary Sovereigns, acknowledged by experts as the most accurate in the world. With the drivers symmetrically arranged on a vertical axis and time aligned, you have to hear these speakers!]

This is disappopinting. A classic bait and switch tactic First entice the punters with a legendary speaker such as the Duntech Sovereigns and then change it at the last moment to their latest offering - a design which had nothing to do with the late John Dunlavy. Even the picture looks photo-shopped ! Not a good look I am afraid

LEVEL 1: FARM COVE ROOM
Halcro & Duntech & Döhmann
The best of Australian – maybe the best in the world!

This unmissable audio suite will host Duntech's brand-new Princess loudspeakers – $120,000 floorstanders that take their lead from the company's legendary Sovereigns, acknowledged by experts as the most accurate in the world. With the drivers symmetrically arranged on a vertical axis and time aligned, you have to hear these speakers!

The power comes from Halcro's very latest reference amplification, a triumph of form and function, unique in its imagination of what an amplifier is and how to puh the boundaries of technology.

The third Aussie legend is analogue playback courtesy of a Döhmann Helix turntable, engineered to deliver unparalleled performance in analogue playback and is the result of many years of research, development, collaboration and listening by internationally acclaimed analogue designer Mark Döhmann and his team.

It's an Australian supersystem not to be missed!

From their latest facebook post just more of the same. Old habits die hard

For those fake review websites and infuencers that keep promoting "audio-file" network switches please get your facts straight and stop spreading mistruths and propaganda just because it is profitable for you to do so. That is no excuse to do it.

Unlike these fake reviewers and as someone that has actually designed DAC and DSP hardware all I can say is that once those 'ones' and 'zeros' are re-assembled inside a buffer within a DAC or DSP, the electronics does not care where they came from. Whether it's an S/PDIF, Toslink, USB or ethernet connection via streamer and network switch etc it makes no difference to the DAC hardware how they got there as long as there are no errors in the data then each source will produce an identical result and this can be measured as well !

And there in lies the rub. These fake review websites rarely measure anything if at all. Instead they will come up with a whole lot of lame excuses as to why they should not measure anything which is contrary to the people who design the hardware and/or the silicon used in most modern electronic devices. None of their lame excuses stands up to any scrutiny which should be a red flag to anyone reading it. What these people are doing is sending the industry back to the dark-ages and promoting a whole new industry of snake-oil merchants, snake-oil products, scam artists and spivs.

The only caveat here is that different devices may use different levels of isolation with the possibility of passing noise into the connecting device. However this all should be clearly measurable but of course if you don't measure anything then how would you know ? Of course this aspect which is usually the focus of most of these fake reviews has no bearing on the end sound quality. And changes in someones subjective interpretation of sound-stage is certainly not a reliable performance metric !!

[The loudspeaker's off-axis performance is important because although this is not necessarily what is heard directly, it is ultimately heard because of its coupling into the room.]

And from DEQX's own white paper !!

In consumer speakers where crossover slopes of typically 12dB/octave are used, the same sound is coming from both drivers, typically for an octave above and below the crossover frequency. Unless these sources are perfectly timed to meet in phase with each other (time aligned), the resulting mix of sound will produce 'comb filtering', which can sound 'nasal' or 'flanged'.

Another problem has also been introduced by using multiple drivers to reproduce sound – a single instrument may now sound like it is coming from different places. This results in poor off-axis performance because varying degrees of summation and cancellation occur depending on the relative distance between each driver - a phenomenon known as 'lobing'. Because the woofer is often physically placed further back than the tweeter, this lobing is also non-symmetrical in the vertical plane. The loudspeaker's off-axis performance is important because although this is not necessarily what is heard directly, it is ultimately heard because of its coupling into the room.

THE DEQX SOLUTION
The active DEQX crossover and correction processors provide help to resolve the problems mentioned above at a number of levels. Although impractical even in 'active' analogue crossovers, DEQX provides true linear phase very high-order crossovers that provide absolutely precise time alignment and phase coherence between drivers, while limiting the 'bleed' of similar frequencies over the crossover region so that lobbing effects occur only at the imperceptibly narrow crossover region, and dispersion patterns remain similar between drivers.

Yes Mr DEQX, the off-axis response is very important especially when trying to deploy steep slope linear-phase crossovers. Well and truly busted Mr DEQX

Not just ASR links but links to https://www.aussieaudiomart.com/ now. Seriously marc !!

But it's a Hifi community !! LOL

That Hifi community that buys you a nice big house doesn't it

Here is a blast from the past from my thread on diyaudio where I was trying to mind my own business on diyaudio but the tentacles from stereonet weren't very far away A DEQX fanboy coming out of the woodwork desperately trying to sway people away from buying my preamp at the time of the pre-order for the UP2 and UPP around late 2019  which is about the same time DEQX decided to offer a discount to celebrate an odd 21 year anniversary. Hmmm, funny about that

https://www.diyaudio.com/community/threads/hi-end-dsp-based-multi-channel-integrated-preamp-crossover-dac-project.264743/page-67#post-5934654

Second, what I really like about my DEQX crossover at the moment is the implementation of linear-phase crossovers (FIR). The software treats it just the same as Linkwitz or Butterworth crossovers. Just choose it from the list, that simple. All other DSP solutions so far expect you to be a DSP expert to be able to implement linear phase crossovers. I was looking for this in audioweaver but so far have not found it yet. Maybe I'm missing something. Now before anyone likes to discuss the downsides of linear phase crossovers and why I would want them but there is only one simple answer: Because it sounds better in my system and except from linear phase crossover I can't think of anything why I would need the amount of DSP power that is on offer in the Ultimate Preamp

Well I have got bad news for you. I have three good reasons why you should AVOID using a linear phase crossover. This should change your mind

https://analog-precision.com/forum/news-updates/why-we-would-never-use-a-deqx-to-build-a-loudspeaker-!/

And of course the elephant in the room Why nobody has ever called them out over this ??

https://analog-precision.com/forum/news-updates/why-we-would-never-use-a-deqx-to-build-a-loudspeaker-!/

Why a single amplifier driving a passive speaker is such a bad idea but nobody is talking about the elephant in the room !! Maybe if your amplifier is carved out of a solid block of aluminium billet, or you buy some uber expensive speaker cables, or use some cable lifters or even use a grounding box it may solve these fundamental issues but wishful thinking never solved any technical problems

Has anyone noticed how stereonet starts flogging tickets to their show right at the time Australia Hifi hosts their show even though stereonet's show is 31 weeks away ?? That's what they do

And see what they have this year that is definitely worth going to see

https://analog-precision.com/forum/news-updates/duntech-sovereigns-to-feature-at-this-years-austalia-hifi-show/

Mikey is right. Check this out. Recently I caught one of them out on ASR bagging my product. This dude has got sour grapes because I wouldn't sell him a DSP board at minidsp prices. Now he is interested in paying top dollar for the new DEQX, and Audioweaver running on Danville hardware is not a problem but is only a problem  when it's running on my hardware apparently. LOL   Their opinions change depending on which forum they are on. You just can't make this s**t up but like Mikey says that's exactly what goes on in this industry !!

On ASR this person bags both mine and another product for using Audioweaver !



Now we have the same person on WBF now endorsing that same product that he bagged on ASR ! Doesn't mention my product of course. Seems to be a pattern here.



And then he sinks the boots into people like myself who have spent countless hours and risked alot to make somethging that doesn't meet his expectations



Note the people liking this post. The one who started the thread appears to have an agenda. On another forum says it's all about the software but on this forum it's all about the hardware when spruiking DEQX These are the armchair critics like Bjorn who can't build their own hardware or write the code for it but will whinge and whine when someone like myself spends countless UNPAID hours on a superior product but fails to offer it at a price-point lower than minidsp. You could never satisfy people like this no matter what you built and how much effort you put into it nor would they offer you the funds needed to build a product according to their requirements. They just think that you can magically come up with a product that suits their exact needs without them risking a single penny on it. It seems to be a common theme with some people in this industry. Anyway I have one word of advice for people like Bjorn. Build your own DSP hardware and write your own custom DSP code the way you want it and then sell it to all of your mates for 2 dollars and then nobody can complain can they ?? Rather than cop more abuse from the likes of Bjorn etal I decided to do what he is doing and build my own SOTA active speaker system using my own hardware and custom DSP code. Badluck Bjorn, looks like your options just got a whole lot narrower. Be careful what you wish for mate