John Curl's Blowtorch preamplifier part II

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On the subject of XLR connectors.
In ANY OTHER CONTEXT, the very idea of insisting on Neutrik or locking connectors would be laughed at here as absurd and extra costly.

Absolute nonsense.

I don't believe anyone here would have laughed at using a Neutrik part. Sure, they would laugh at some grossly overpriced XLR from the likes of Oyaide or Furutech, but not Neutrik. We're talking about a 75 cent part here, John. Sixty cents if you go with the spring retention version instead of the hard locking tab.

se
 
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In ANY OTHER CONTEXT, the very idea of insisting on Neutrik or locking connectors would be laughed at here as absurd and extra costly.
Do-you understand so bad our positions ? Neutrik or XLR are good connectors, with a VERY good quality/price ratio. Nobody here, had never laughted with a use of a decent connector, radiator, trasfo, or good capacitances as long you don't have to pay X3 for the word 'audiophile' etc... When we ask questions about Blowtorch's case in plain machined aluminum, aluminum is not the concern, but 'plain, 'machined' and 'aircraft'. Anything expensive or over priced witch does not bring any value to the sound's quality but pure fashion.

Now, it is difficult to understand how you can correlate the 'only transparent cable' in plain silver you use in one of your preamp (or the only good 'resista') and your jokes and so little care about this bad connector story. Legend and reality.
 
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Now let's see, SY reports his boss has a problem with XLR connectors falling out of their sockets when horizontally mounted. The XLR connector does not have a latch.

So I decided to do a simple test. I used one of the forked contact female connectors and a male insert only. No outer shell.

The photographs show the weight of the small vise and the connector and then the weight just before the connector slipped out.

36.5 oz vise and connector weight - 27.3 oz at pull out = 9.2 oz of holding strength.

So even without any shell what kind of cable has that much straight pull?
 

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diyAudio Member RIP
Joined 2005
In defense of what happens to products one designs over which one either loses or never has control at the outset: so much can go wrong, and it may not be strictly cost issues. Among other things, parts availability and schedule adherence is also crucial. And with a lot of manufacturing having temporarily moved away from where scrutiny is fairly easy, and with attendant language problems, things are even more problem-prone.

This situation leads some to start their own companies. In many cases this leads to near-nervous-breakdowns on the part of the founders, unless they are exceptionally fortunate to either keep the operation small enough to manage personally, or are able to acquire outstanding help.

Most businesses go broke, too.
 
Sadly, rational technical discussion is impossible. It leads to misinterpretation, like in case of XLR connectors, when we were in fact recommending Neutrik (good quality at reasonable cost).

Yeah, but John was trying to say that IN ANY OTHER CASE, we'd pooh-pooh the Neutrik as being overly expensive. Which as I said previously is absolute nonsense. Just another straw man.

se
 
Yes, PMA, there are language differences that separate us. You seem to be 'petty and rude' to me, not giving me any 'benefit of doubt' when I try to explain my position.
The Blowtorch uses Neutrik, the JC-series uses Neutrik, I have hundreds of Neutrek XLR connectors here in my apartment. So what? The Taiwanese have their own stocks of XLR connectors, and a ten cent difference might make them use one over another. I can't do much but complain, and I copied SY's complaint here and E-mailed it to Richard at Parasound. He gave me a flat NO! I can do no more but listen to heaps of abuse from different parties, who don't do audio at this level, for a living.
 
John,
Some us can forgive you for the flaws of Parasound's execution of your designs. Now if they wiily-nilly changed the values or substituted entirely different devices I would imagine that you would be the one shaking the tree here so to speak. But it isn't your company, you are really a paid consultant. How you handle a product with your name on it would be interesting to me though. What rights do you have when you allow your name recognition to be used on a product? Can you in effect control the build quality of one of your own designs, or are there specific instances where you are being paid to use your name or designation and have no recourse? Off the subject I know but it would be enlightening to understand the relationship that you have with the many different vendors that you do design work for.
 
I do have some recourse, and I DO approve the schematics that are used, but I do not always get a prototype to test, until much later.
For the JC-series, I have to approve of everything, including parts and layout. I can get changes made at the engineering level, IF I am not happy with something. However, because of all this, the JC-series costs at least twice as much, retail. That is the trade-off.
Just like an automobile: IF you want a $15,000 auto, it will have more compromises than a $30,000 auto, and you should not complain just because the $15K auto doesn't have adjustable seats, or corner as well. You pay your money and you take your choice.
IF one of the designs, such as the A21 or the A23 did badly with the reviewers, then I would step in, immediately, and demand changes or my name removed from the product. Of course, I would also lose my royalty for the product, so there has to be something SERIOUSLY WRONG with the unit, not some complaint about a loose connector, that IF it is Parasound's fault, can be returned under warranty. Why don't they go that route? It is the most legitimate one, rather than harassing the designer.
 
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If a number of people had independently complained (for good reasons) that this was a problem, then Parasound would most likely respond.

What is the number of amps Parasound is selling and how many people complaining would qualify for deserving a response?

But apparently one instance where a customer was 'ticked off' enough to hassle the designer of the schematic, in order to get special treatment, was 'a bridge too far'.

Someone should whisper to your boss ear that potential customers will be ‘a bridge too far’ pretty soon.

I wonder, if this “in order to get special treatment” reflects your understanding?

George
 
George, you are exceeding your understanding of the situation. Nobody here is expected to buy a Parasound. Heck, I have a hard time convincing many of you to buy a used or broken Parasound and fixing it up. People here are just too frugal. They WANT to make their own stuff, even when we have as good or better designs available at a price lower than someone here could even buy the parts, and pay themselves minimum wage to put them together.
I believe in 'after market service'. Parasound believes in it too. But someone cannot just 'yank our chain' for no really good reason, and get us to give them something for nothing. The Parasound products have a good long term guarantee. Check it out for yourself.
 
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Just like an automobile: IF you want a $15,000 auto, it will have more compromises than a $30,000 auto, and you should not complain just because the $15K auto doesn't have adjustable seats, or corner as well. You pay your money and you take your choice. .

Hi John,

I've worked with a major auto manufacturer in R&D and I can tell you first hand that the cost of the vehicle is by no means reflected in the sale price. Sure a V8 with leather seats will cost more than the V6 with fabric seats. But, when I see the sale price of some of the premium vehicles I worked on, it's "what the market will withstand pricing" that's the strategy here.

Typically the margin could be as high as 6-fold on the premium products versus what was returned on the entry level models.

Talking to some other guys from a couple of the EU auto makers at an SAE conference one year, this was much the same for them.
You see what you develop for your flagship models by way of technology etc, often finds it way into the lower entry level models - at some point.

I'll give two interesting examples: I co-wrote the firmware and developed the hardware for auto-headlights (sensors/switching) and auto-windscreen sensor and control for a particular series of auto models. We wanted to do our own thing rather than just buy-in from another OEM, but importantly save the company a whole lot of 3rd party cost.

Well, the cost of introducing this feature to the body-control module (controls the interior and ancillary non-engine functions, Air Con, Windows etc etc) was about USD11 per vehicle, based on a volume of 20k vehicles (with the features installed) and 2-year recovery on all R&D etc. The fact that one year over 30k vehicles went out with these features made some people in marketing & sales a nice Christmas bonus!

These features were sold at one point to the end-user on some auto models as an optional extra, at a staggering USD1800+ H'mmm...or in one case the auto headlights feature alone could have cost you USD500+

The guys in marketing said to me the market pricing reflected what the market will withstand, based on projected volumes, and perceived end-user value vs cost when it comes to premium models.
 
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diyAudio Member RIP
Joined 2005
The guys in marketing said to me the market pricing reflected what the market will withstand, based on projected volumes, and perceived end-user value vs cost when it comes to premium models.

One of the nice things about automotive accessories: they are bundled in OEM vehicles with the major investment of the car itself, and as well most people will pay for them over time. It will be unusual for a Lexus buyer to think of the premium Mark Levinson sound system's percentage adder each time she or he makes a monthly payment.

My late father used to counsel "Charge what the market will bear". However he amended this to something along the lines of "The hell you will!" when I suggested raising my rates to troubleshoot a system for a chiseler friend of his from schoolboy days.:rolleyes:

The trickle-down theory is a nice one though. I'm planning on applying it to some long-in-gestation products for which I may never actually build the highest end version. But the steps toward that cost-less-object version are helping determinations of things that will be more affordable.
 
Mark Levinson sound system's percentage adder each time she or he makes a monthly payment

This is an interesting one: The auto maker I worked for was selling "marketing space" in their vehicles; think of your dashboard as a kind of mini bill board that's got very good market visibility!
They saw it as a win-win, getting their premium brand/value associated with another premium brand - it's got to be good for business, for both parties, right?

From what I've seen, the cost of the premium name brand stereo in another premium name brand auto maker's models is probably not what you think it would cost the auto maker to include that specific brand in their vehicle.

I heard second-hand, that one premium audio manufacturer attributed their sales increase in part to when their brand appeared installed in a specific auto maker's models.

Changing markets and diminishing sales has driven some quite inventive, but probably pretty obvious joint ventures across product and industry markets/segments.
 
Thanks for your input, chopper. Now what price point should I buy a car, and what should I expect?

Once I would have said buy something Japanese if you wanted reliability, go EU if you want bleeding edge, style and performance and will quit the car in 4 years time, because the repair costs might kill your discretionary spending ability.
Or else buy something North American (Canadian probably) made?

Now, just buy whatever suits and you can afford and don't fret

Sorry, I didn't intend to "crap on your thread" so to speak...
 
SY was clear about, and his remark about latch was 'theoretical', while he said that Berhinger have XLR with no latchs...

No, I said the opposite. The Behringer DOES use XLR with latches. Apparently saving the extra 5 cents or so wasn't worth the reliability hit for their under $200 box.

I suspect that they don't publicly sneer dismissively about their customers. That's reserved for the audio fashion industry.
 
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