Author Topic: EEVblog #671 - White Van Speaker Scam Teardown  (Read 50628 times)

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Offline digital

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #75 on: October 10, 2014, 08:52:16 pm »
Dave you may not be aware of it but your language in the video is certainly not suitable for young adults or children wanting to learn about electronics.Regards Wayne

David_AVD beat me to it. It is what it is.
Dave is that comment supposed to be meaningful.
 

Offline nitro2k01

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #76 on: October 10, 2014, 09:11:59 pm »
Dave you may not be aware of it but your language in the video is certainly not suitable for young adults or children wanting to learn about electronics.Regards Wayne
How exactly is mild cursing unsuitable, though? Because it breaks your impression of youths as innocent minds who don't know the foul names for bovine excrement, testes, the glans of the penis, and all the rest? And also, what's with the choice of words, "young adults"? Even if it isn't what you intended, it implies that even a 19 year-old would generally think that cursing is offensive. Maybe the word you're looking for is adolescent?
Whoa! How the hell did Dave know that Bob is my uncle? Amazing!
 

Offline c4757p

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #77 on: October 10, 2014, 09:28:31 pm »
Yes I was born here generations ago and whether I voted for the Prime Minister is none of your business so what is your point.

Speaking of "none of your business": other people's choice of words.
No longer active here - try the IRC channel if you just can't be without me :)
 

Offline brabus

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #78 on: October 10, 2014, 09:33:09 pm »
I had a very good laugh watching this video, thanks!  :-DD

The best part was when you cracked open the "AMPLFIER" we can read at 9:29! :-DD
 

Offline tom66

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #79 on: October 10, 2014, 11:33:56 pm »
I'm honestly surprised it's not just an empty case with a weight in the bottom of it, so there's that...
 

Offline David_AVD

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #80 on: October 11, 2014, 11:43:51 am »
Dave you may not be aware of it but your language in the video is certainly not suitable for young adults or children wanting to learn about electronics.Regards Wayne

David_AVD beat me to it. It is what it is.
Dave is that comment supposed to be meaningful.

It's pretty simple.  Dave (Jones) runs this forum and does the videos in his own style.  No everyone will like that style and they are free to not read / watch.   ::)
 

Offline digital

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #81 on: October 11, 2014, 07:28:32 pm »
Dave you may not be aware of it but your language in the video is certainly not suitable for young adults or children wanting to learn about electronics.Regards Wayne
How exactly is mild cursing unsuitable, though? Because it breaks your impression of youths as innocent minds who don't know the foul names for bovine excrement, testes, the glans of the penis, and all the rest? And also, what's with the choice of words, "young adults"? Even if it isn't what you intended, it implies that even a 19 year-old would generally think that cursing is offensive. Maybe the word you're looking for is adolescent?
Yes in hindsight adolescent would have been a better choice.Thank's. Wayne
 

Offline bitwelder

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #82 on: October 11, 2014, 11:40:39 pm »
Yes in hindsight adolescent would have been a better choice.Thank's. Wayne
"Thank's" ? What kind of English do you teach to the young generations?  :scared:
https://english.stackexchange.com/questions/187006/is-thanks-an-alternative-correct-spelling
 

Offline rolycat

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #83 on: October 12, 2014, 12:29:59 am »
Yes in hindsight adolescent would have been a better choice.Thank's. Wayne
"Thank's" ? What kind of English do you teach to the young generations?  :scared:
https://english.stackexchange.com/questions/187006/is-thanks-an-alternative-correct-spelling
I'm fairly sure that Wayne is not an English teacher, or even an Australian teacher of English. This is a good thing.
 

Offline teda

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #84 on: October 12, 2014, 03:23:45 am »
With Marc vencent (Mv) being maligned by Dave, I felt that their chief scientist should be able to respond with a rebuttal. Therefore, on my next remote viewing (RV) experience I was able to contact Mv’s chief scientist and obtain some answers.

For security reasons, Mv’s chief scientist could not give his full name. However, he did agree to give his first and middle name, One Hung. One Hung decided that the best way to describe Mv’s technology is to start from the power supply and work our way to the power amplifiers.

Power cord: Even this item did not escape Mv’s attention to detail. Each cord length used in Mv products are tuned to the fundamental clock frequency of the internal processor. Additionally, the direction the copper is drawn to produce the wire is correctly oriented in relation to the power source.

Power transformer: What Dave does not understand is that Mv transformers are hand wound using only the highest quality oxygen free copper wire around a ferrite core specially formed in our own temperature controlled ovens. Similar to other wire used within Mv products the optimal wire direction is observed during manufacture. I mentioned that the wire used for the transformer seemed “a bit thin” for a 7.1 amplifier. One Hung response was that by using a proprietary twisting of the wire during manufacture; Mv can totally eliminate the “skin effect” of wire and instead use the whole wire for current capacity. The result being a 22 gauge wire can have the specifications of an 8 gauge wire.

Power Capacitors: I mentioned that Dave made remarks that there seemed to be “old glue” on the power supply capacitors. I made the additional comment that 3300 uF seemed a bit low to power 5 amplifiers.  One Hung explained that the “old glue” is actually a proprietary formulation that has a multiplying effect on the capacitance of an electrolytic.  Because of no NDA, he could not go into the chemical details. However, he explained that the multiplying effect is achieved at the quantum level, by reducing the gap of the electrolytic that the electric field experiences.

Extra solder on traces: One Hung appreciated Dave noticing Mv attention to detail by thickening the PCB traces with solder. One Hung added that the solder used to build up the trace thickness is specially developed to speed up the electron velocity thereby reducing the resistance / inductance.

TDA2030V: The ‘V’ is the key One Hung pointed out. These are specialty masked devices that contain a vacuum tube front end so that the Mv amplifiers can have their highly regarded warm audio feel. At this point I asked why the typical 100uF decoupling capacitors were not used near the output devices. One Hung said that the special solder used to improve electron velocity made this unnecessary. While we were on the subject of the output devices, he added that each output device insulator to the heat sink is meticulously characterized. The “pink” and “gray” insulators have slightly different thermal properties in order to allow the output devices to achieve their proper operating temperature. I next mentioned that Dave felt that the wire connecting the output devices to the output board may be “thin”. All One Hung could do is shake his head in disappointment in Dave’s lack of understanding in the finer details of high end audio amplifier design.

Sub Woofer: I could tell One Hung was especially proud of his creation and was devastated to learn that Dave poked holes in it. I could tell it was like losing a child for him and we had to stop the interview till he could compose himself. He explained that the material used to manufacture the cone is composed of many rear-earth metals and it should have been sent back to their manufacturing facilities for proper extraction.

Display: I mentioned to One Hung that one of the Forum members made a remark that the output display meters seemed “upside-down”. One Hung said it may appear this way. However, as all physics majors know, electrons can be accelerated in a magnetic field. As such, Mv takes advantage of the earth’s magnetic field and is able to improve the display response by “dropping” the electrons towards the Earth.

Three Vacuum Tubes: When I mentioned that the three vacuum tubes did not seem connected to anything he gave me a rather perplexing look.  He said “of course not” why would they be? One Hung explained that the “blue light emitters” are projected into the vacuum tube at a specific distance to excite the atoms within. As these atoms transition to a higher energy state an “audio plasma” is created and wirelessly interacts with the vacuum tube front ends within the TDA2030V, helping to produce that distinctive Mv sound.

I had so many more questions to ask to this highly regarded audio design engineer. Sadly our interview had to come to an end since OHL had to get back to his next project. I can speak for all of us audiophiles that we are anxiously awaiting Marc vincent’s next creation.



 

Offline sonnytiger

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #85 on: October 12, 2014, 03:37:14 am »
Brilliant, haha.
 

Offline free_electron

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #86 on: October 12, 2014, 06:52:20 am »
ST stopped making TDA2030 years ago. it was actually for a long time one of the best integrated audio amps.
Nuvoton is a manufacturer of out-of-licence chips. been around for a long time. not bad quality.




same crap sold under different anme. watch for the rock in the speakers ...

« Last Edit: October 12, 2014, 07:04:08 am by free_electron »
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Offline hikariuk

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #87 on: October 12, 2014, 08:21:21 am »
This scam is still doing the rounds?  I remember running in to it last in the mid to late 90s, in the UK.
I write software.  I'd far rather be doing something else.
 

Offline Topop

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #88 on: October 12, 2014, 04:08:36 pm »
Dave,

Great blog as always.  One question though.  What is UP with the UP side down oscilloscope?

Topop

 

Offline station240

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #89 on: October 13, 2014, 08:11:29 pm »
The VFD is certainly from another product though, there's phosphor panels for modes like Dolby Digital and others that this box certainly doesn't have the capability to decode.

Yeah I have to say, I would have kept the VFD as it's serial driven and perfectly reusable.
Put the toroidal in the drawer to either rewind properly or convert to scrap metal., bin the rest.

Oh and for the record, these scammers have been known to frequent hardware store carparks, as in the places with the oversized carparks and excessive amounts of chinese made goods. Makes perfect sense as you've already proved the customers wouldn't know quality if it fell off the top shelf and hit them on the head!
 

Offline digital

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #90 on: October 13, 2014, 08:42:09 pm »
Yes in hindsight adolescent would have been a better choice.Thank's. Wayne
"Thank's" ? What kind of English do you teach to the young generations?  :scared:
https://english.stackexchange.com/questions/187006/is-thanks-an-alternative-correct-spelling
I'm fairly sure that Wayne is not an English teacher, or even an Australian teacher of English. This is a good thing.
Explain to me why Wayne is not an English teacher or an Australian teacher of English and why this is a good thing as anyone knows English is an evolving language and why anyone cares.
 

Offline nitro2k01

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #91 on: October 13, 2014, 08:57:14 pm »
Explain to me why Wayne is not an English teacher or an Australian teacher of English and why this is a good thing as anyone knows English is an evolving language and why anyone cares.
Having an "evolving language" means that you're open to a reasoned discussion about changes to the language. It does not mean that you get to randomly add or remove characters from words. (Plural is not formed with an apostrophe in English.) If you had, say, used apostrophes consistently for plurals of acronyms (for example CPLD's) you could at least argue that you're guarding against ambiguity with a possible acronym that has an S at the end, but for "thanks" there's absolutely no logical reason to put an apostrophe there.

If everyone just do as they please, the written language just becomes an unreadable mess. The joke here is of course that you opened up yourself to attacks on your own use of language the second that you complained about somebody else's use of language. (Dave's cursing.)  Which you still haven't explained why it's harmful to minors, btw.
« Last Edit: October 13, 2014, 08:58:51 pm by nitro2k01 »
Whoa! How the hell did Dave know that Bob is my uncle? Amazing!
 

Offline EEVblog

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #92 on: October 13, 2014, 10:38:59 pm »
Yeah I have to say, I would have kept the VFD as it's serial driven and perfectly reusable.

I did.

Quote
Put the toroidal in the drawer to either rewind properly or convert to scrap metal., bin the rest.

Kept that too.
 

Offline EEVblog

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #93 on: October 13, 2014, 10:41:30 pm »
Drop some nicely looking gear near the EEVblog corporate tower's dumpster Dave will take it, and he will only realize he was scammed after the twitter messages  :-DD

Yeah, I had no idea what these were until people starting tweeting me back about it. Would have become obvious once I googled them though.
 

Offline EEVblog

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #94 on: October 13, 2014, 11:04:43 pm »
David_AVD beat me to it. It is what it is.
Dave is that comment supposed to be meaningful.

Yes. But clearly you are unable to understand any implied meaning behind that, so let me try and explain.
I run a video blog with 175,000 subscribers. My videos get viewed over 45,000 times every day. That means there are a lot of people telling me what they like and don't like, what I should and shouldn't say, how I should or shouldn't do something, how I should or shouldn't talk, etc, etc.
Well, guess what, it is an absolute impossibility to please everyone, so the only thing left for content producers like me to do is to simply continue to do what they want to do, and say what they want to say.
Indeed, you could say my success is in a large part based on the way I tell it like it is and my colorful use of language.
You either chose to watch, or not. And if you are a parent, then you either chose to allow your child to watch, or not.
My content and my choice of words will live or die in the open marketplace of content. I, or any other content producer has precisely zero responsibility to talk in a way that some anonymous forum user wants them to talk.
If there is one thing a content producer does not like, something that pisses them off the most, is people telling them what they should or shouldn't say.
You get no say in that, ever.
« Last Edit: October 13, 2014, 11:13:33 pm by EEVblog »
 

Offline Fungus

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #95 on: October 13, 2014, 11:42:04 pm »
If they were going for dirt cheap why would they use a toroidal? Even my Yamaha RX-596 uses a standard e core.
What gives?

A lot of the parts in that thing looked second hand to me. Pulled out of old equipment.

(Or even third hand - look at those caps, and that relay....no way did they just come out of a factory)

 

Offline timb

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #96 on: October 13, 2014, 11:42:15 pm »

Indeed, you could say my success is in a large part based on the way I tell it like it is and my colorful use of language.
Hey Dave. Can you spell colourful properly.  ;)

He did. :P


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Any sufficiently advanced technology is indistinguishable from magic; e.g., Cheez Whiz, Hot Dogs and RF.
 

Offline SeanB

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #97 on: October 14, 2014, 06:30:07 am »
Speaking of YT subscribers, I was listening today to Hello Internet, in which they were talking about the golden play button you get from YT when you hit the million subs mark.

http://www.hellointernet.fm/podcast/22

 

Offline callipso

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #98 on: October 14, 2014, 06:30:47 am »
Dave,

Great blog as always.  One question though.  What is UP with the UP side down oscilloscope?

Topop

Never heard of Australia, the land down under?
I wonder... **BOOM
 

Online ConKbot

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Re: EEVblog #671 - White Van Speaker Scam Teardown
« Reply #99 on: October 14, 2014, 11:08:18 am »
Dave,

Great blog as always.  One question though.  What is UP with the UP side down oscilloscope?

Topop

Never heard of Australia, the land down under?


spot the Aussie :p

and/or spot the new visitor to Australia
 


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