ROOSKIE
Major Contributor
Howdy. You might want to take distortion measurements of the driver with various torques applied.
That would be very interesting.
That would be very interesting.
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Nuy's first measurements were before disassembly. Enough with screw non-sense.
And I also have 4 purifi to test one day so lets see about that.
No, apparently not yet.Hello,
With this long winded "Who Shot Jack" winding down is there a thread where Purifi drivers are done right?
I have 2 Purifi drivers being delivered in a couple of days. They are looking for a job in a couple of mini 2-ways on my bench.
@amirm is putting out videos with sound clips I want to critically listen to.
Thanks DT
No, apparently not yet.
Plan for the passive radiators or a nightmare chore getting the small box tuned low using a large enough port diameter to mitigate chuffing and overloading.
You could go also sealed and boost with DSP but you will lose SPL capability and HD,IMD will be higher sooner.
Uuuh, the only solution is getting it fully fixed. You pay for a certain performance level, and if I'm not getting that paying less won't fix it. If I wanted to pay less I would have bought something else. Monetary compensation is a good solution for scratches, bumps and other visual issues, not for performance related ones.He offered the person a monetary compensation for his purchase, If i purchased this speaker i would definitely not consider that disappointing.
So don't buy ascend acoustics, selah audio, Salk sound or philharmonic audio?Never buy DIY or artisan and you are safe. Only industrial design.
...and maybe there are natural consequences of so doing...This speaker uses really expensive esoteric drivers and cabinetry at very slim markup
So don't buy ascend acoustics, selah audio, Salk sound or philharmonic audio?
Some claim to kill giants...Yeah, but poor speaker performance never killed anybody?
If one decides to buy expensive speakers made from SOTA drivers and expect really low measurable distortion in both speakers of pair, i'd not call his disappointment "over emphasing minor issues".I understand that the pickyness of the reviewer over emphasing minor or simply irrelevant issues is no more that a kind of... trolling/buzzing
One could argue that you likely get better quality for your money. I wouldn't be so quick to dismiss some of these companies. To judge all small manufacturers by the actions of one small manufacturer (with a history of defensiveness) is very closed minded.If safety is your number one priority, yes?
The socket used has hollow tube.
Maybe, and I understand that the OP has difficulty in english so maybe he can answer clearly, but in the support email (not the later justification), Alan March ask a simple question: "However, can I ask if the fixing bolts where tighten?" we don't see a clear response to that and again, beside the OP post said that well he noticed that screw torque was uneven "On his perspective, at disassembly" but goes on with "I decided to ignore Alan March response. Sounds to me as a way to partly avoid the question. Maybe @Nuyes can clarify, but again there is truth and great value to the OP's investigation, I do think that Ignoring support attempt and then expressing disappointment is not fully fair. At least you answer, especially if you are going to use the email communications in your review to voice your disappointment.His story is not consistent with what is said in OP. He had no motivation to dig into the speaker if the distortion was not there to start.
Official Responses from Marchaudio
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And there's something I want everyone to know, including Alan."First the binding post air leak"
1. Leaks from binding posts were found on both samples I received.
2. The binding post of the speaker was sealed by me, the reviewer, 'not your customer, Mr. Jung'.
"His Klippel measurements"
1. The measured acoustic axis position is specified in the data and has nothing to do with this issue.
2. And I followed the acoustic axis (Tweeter) recommended by you in all measurements after the first session.
"Distortion measurements"
1. I have not touched the assembly of this speaker until the moment of measurement and subsequent review and repackaging of this speaker to return to Mr. Jung.
2.Alan You need to admit to being wrong about this part.
"The passive radiator is not faulty"
1. I never concluded that the passive radiator was the culprit, and the review shows that it was part of the analysis process.
"It betrays a complete lack of understanding of the subject of the vibration of structures."
1. You are right. I have no knowledge of structures and vibrations, and I can't be sure about this.
2. What I could do without related knowledge was to suspect other causes and conduct comparative measurements, and since it actually showed improved results (the resonance of 380hz you mentioned disappeared itself. If this is the purify driver Can the resonance band and strength of the driver structure change with the addition of an internal sound absorbing material?)
"Please note again that the speaker he did not dismantle showed no problems."
1.Again, no tampering was done to the speaker until we initially sent you a bunch of data and asked for advice, including measurements for review.
"Tweeter and Well Nut Air Leaks Neither the tweeter or rubber well nuts leak air. This is easily demonstrated by depressing the woofer."
1. This is clearly your mistake.
We have a video that confirms that the woofer is restored slowly and quickly than expected after the woofer pops out of the passive radiator without any manipulation applied.
"Internal Wiring"
1. You have already lowered the credibility of March Audio's assembly quality to the ground by failing to assemble the insert nut of one speaker.
2. What I checked were wires that moved freely inside, and even if this didn't actually cause a problem... I arranged additional wiring just in case.
Please let me know if this can cause performance issues with your speakers.