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Post by ChrisB on Jul 11, 2014 21:14:49 GMT
Ah right thank you for that. I still have one after all this time and it still sounds good - I stuck it in a headphone amp - the old hfn/rr Headcase.
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Post by pre65 on Jul 11, 2014 21:16:21 GMT
If an LDR volume control proved to be as good as the reports I've heard there would be no need to sell it on. I would take responsibility for my "manufactured" goods. So have you signed up to WEEE have you, do you even understand the rules and your responsibility. What are you going to do to dispose of hazardous substances at the end of their life? You just let me worry about my responsibilities eh ?
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Post by Dr Bunsen Honeydew on Jul 11, 2014 21:26:49 GMT
My experience of you means it is doubtful you have a clue what I am talking about.
I reiterate, building a LDR equipped piece of audio equipment in the UK is illegal as it doesn't qualify for CE, ROHS or WEEE and to be so blase about it shows your level of understanding. Yes it is legal to buy LDRs in the UK because the component market is international, to build that LDR into a finished unit is illegal - full stop!
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Post by pre65 on Jul 11, 2014 21:34:15 GMT
My experience of you means it is doubtful you have a clue what I am talking about. I reiterate, building a LDR equipped piece of audio equipment in the UK is illegal as it doesn't qualify for CE, ROHS or WEEE and to be so blase about it shows your level of understanding. Yes it is legal to buy LDRs in the UK because the component market is international, to build that LDR into a finished unit is illegal - full stop! Richard, you have NO experience of me at all. Full stop.
You certainly are taking liberties by making assumptions about what I might, or might not know.
And you, the great man who could (at one time) only say "ad hominem" to every comment made about you.
Perhaps the forum aspires to being friendly, but there are those (like you) who seem to delight in controversy , muck raking and character assassination.
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Post by ChrisB on Jul 11, 2014 21:53:23 GMT
......and this is where your choice of large type begins to look really really shouty. Please cool it folks.
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Post by Dr Bunsen Honeydew on Jul 11, 2014 22:35:58 GMT
My experience of you means it is doubtful you have a clue what I am talking about. I reiterate, building a LDR equipped piece of audio equipment in the UK is illegal as it doesn't qualify for CE, ROHS or WEEE and to be so blase about it shows your level of understanding. Yes it is legal to buy LDRs in the UK because the component market is international, to build that LDR into a finished unit is illegal - full stop! Richard, you have NO experience of me at all. Full stop.
You certainly are taking liberties by making assumptions about what I might, or might not know.
And you, the great man who could (at one time) only say "ad hominem" to every comment made about you.
Perhaps the forum aspires to being friendly, but there are those (like you) who seem to delight in controversy , muck raking and character assassination. No experience of you, I had months of your idiocy and desire for conflict on Audio Talk. My experience was it was like being plagued by a mozzy who wont leave you alone, who for some reason likes to irritate people with big writing and other stupidity. You are about the most unfriendly irritating individual I have ever experienced on forums.
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Post by ChrisB on Jul 11, 2014 23:10:29 GMT
OK, the subject matter appears to have been left behind here, as does the drifted to subject matter. You've both resorted to personal insults and that won't be tolerated. Richard, if you think the point you were trying to make is worth preserving, then you need to stop the attacks now. Otherwise I won't be inclined to be very selective over what's deleted from this thread.
Pre65, please take note of the above.
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Post by Dr Bunsen Honeydew on Jul 11, 2014 23:32:03 GMT
It just seems from the point of his arrival he has just been posting for this effect and result both with his content and its presentation. I even posted at HFS at his arrival here and predicted the outcome.
Back to content, LDRs in audio use is illegal in the EU, full stop. Now whether that is EU over the top bent bananas bollocks is open for debate as LDRs are quite safe as long as they don't burn or get broken open so the fumes or the content can be ingested then :-
"Acute exposure to cadmium fumes may cause flu like symptoms including chills, fever, and muscle ache sometimes referred to as "the cadmium blues." Symptoms may resolve after a week if there is no respiratory damage. More severe exposures can cause tracheo-bronchitis, pneumonitis, and pulmonary edema. Symptoms of inflammation may start hours after the exposure and include cough, dryness and irritation of the nose and throat, headache, dizziness, weakness, fever, chills, and chest pain.
Inhaling cadmium-laden dust quickly leads to respiratory tract and kidney problems which can be fatal (often from renal failure). Ingestion of any significant amount of cadmium causes immediate poisoning and damage to the liver and the kidneys. Compounds containing cadmium are also carcinogenic.
The bones become soft (osteomalacia), lose bone mineral density (osteoporosis) and become weaker. This causes the pain in the joints and the back, and also increases the risk of fractures. In extreme cases of cadmium poisoning, mere body weight causes a fracture.
The kidneys lose their function to remove acids from the blood in proximal renal tubular dysfunction. The kidney damage inflicted by cadmium poisoning is irreversible. The proximal renal tubular dysfunction creates low phosphate levels in the blood (hypophosphatemia), causing muscle weakness and sometimes coma. The dysfunction also causes gout, a form of arthritis due to the accumulation of uric acid crystals in the joints because of high acidity of the blood (hyperuricemia). Another side effect is increased levels of chloride in the blood (hyperchloremia). The kidneys can also shrink up to 30%. Cadmium exposure is also associated with the development of kidney stones.
Other patients lose their sense of smell (anosmia)."
Cadmium exposure also has an accumulative effect like with lead. All these reasons are why the substance is in the process of being banned for usage in the EU. Though certain products like solar panels have waivers given too them as they are considered too important to ban, same with batteries. BUT does that give people an excuse to break the law, I am sure some will think so. All I am doing is giving a heads up as few seem to know what is going on.
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Post by ChrisB on Jul 11, 2014 23:39:35 GMT
That's very specific. Would you care to supply the source and explain the context please?
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Post by Stratmangler on Jul 11, 2014 23:55:05 GMT
On a serious note. You will see on h's the tale of an 8 year old boy who found poorly discarded mercury and now is confined to a wheelchair. My flippant point was we have a responsibility to others not just the endless satisfaction of our own desires. I see, so you unanimously decided to set yourself up to protect us from ourselves. If you really want to do a public service why don't you pursue the providers of equipment using NiCad batteries. They'll be much more profligate than those using LDRs to control signal level into a power amplifier. There are at least a dozen such batteries within 20 feet of where I'm sat. I don't recall there being a major effort on any any of the suppliers part to alert me to the toxic nature of some of the materials used in the manufacture of said batteries. Wake up, smell the coffee and look at the much bigger picture! Seeing as Joe Public on the whole don't give a rat's arse about proper quality the number of people using LDRs in a device to control signal amplitude is going to pale into insignificance, whereas the majority of modern households will have quite a number of NiCad battery driven devices within them.
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Post by Dr Bunsen Honeydew on Jul 11, 2014 23:59:23 GMT
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Post by Dr Bunsen Honeydew on Jul 12, 2014 0:06:08 GMT
On a serious note. You will see on h's the tale of an 8 year old boy who found poorly discarded mercury and now is confined to a wheelchair. My flippant point was we have a responsibility to others not just the endless satisfaction of our own desires. I see, so you unanimously decided to set yourself up to protect us from ourselves. If you really want to do a public service why don't you pursue the providers of equipment using NiCad batteries. They'll be much more profligate than those using LDRs to control signal level into a power amplifier. There are at least a dozen such batteries within 20 feet of where I'm sat. I don't recall there being a major effort on any any of the suppliers part to alert me to the toxic nature of some of the materials used in the manufacture of said batteries. Wake up, smell the coffee and look at the much bigger picture! Seeing as Joe Public on the whole don't give a rat's arse about proper quality the number of people using LDRs in a device to control signal amplitude is going to pale into insignificance, whereas the majority of modern households will have quite a number of NiCad battery driven devices within them. This has no bearing on the reality that the use of LDRs in audio products in the EU is currently illegal.
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Post by ChrisB on Jul 12, 2014 0:15:22 GMT
Thanks for the references. You haven't supplied the sources of everything you've quoted though. There is specific information about the effects of over-exposure to Cadmium, none of which is within the links you supplied. Please understand, I am not calling you a liar, but if you're telling people that their hobby is going to kill them, you'd be well advised to give them the tools to verify your assertions.
The Law is another thing entirely!
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Post by yomanze on Jul 12, 2014 0:52:19 GMT
Are we still allowed to use leaded solder? All of my equipment has it because the manufacturers prefer to use it.
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Post by Dr Bunsen Honeydew on Jul 12, 2014 2:16:50 GMT
Thanks for the references. You haven't supplied the sources of everything you've quoted though. There is specific information about the effects of over-exposure to Cadmium, none of which is within the links you supplied. Please understand, I am not calling you a liar, but if you're telling people that their hobby is going to kill them, you'd be well advised to give them the tools to verify your assertions. The Law is another thing entirely! en.wikipedia.org/wiki/Cadmium_poisoningScan down to clinical effects.
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Post by Dr Bunsen Honeydew on Jul 12, 2014 9:43:21 GMT
Are we still allowed to use leaded solder? All of my equipment has it because the manufacturers prefer to use it. Lead solder is still available to buy and use, especially for your own occasional use. The hazzard is not with the product made using lead solder (apart from end of life disposal) it is dangers in using it for the production line solderer due to long term exposure to contact and fumes. That is why the EU is restricting its use in RoHS regs, but the cat is out of the bag with lead, there is so much in the environment from leaded petrol use over decades that solder contamination is minor compared with what is in the vegetables we eat that has been taken up from the soil they are grown in. Lead poisoning is only a real problem for children as development of nervous system and brain function is impaired. Lead only very very rarely kills as you have to ingest a lot and the effects are chronic long term. Cadmium is different and far more toxic.
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Post by pinkie on Jul 12, 2014 10:23:18 GMT
Are we still allowed to use leaded solder? All of my equipment has it because the manufacturers prefer to use it. Lead solder is still available to buy and use, especially for your own occasional use. The hazzard is not with the product made using lead solder (apart from end of life disposal) it is dangers in using it for the production line solderer due to long term exposure to contact and fumes. That is why the EU is restricting its use in RoHS regs, but the cat is out of the bag with lead, there is so much in the environment from leaded petrol use over decades that solder contamination is minor compared with what is in the vegetables we eat that has been taken up from the soil they are grown in. Lead poisoning is only a real problem for children as development of nervous system and brain function is impaired. Lead only very very rarely kills as you have to ingest a lot and the effects are chronic long term. Cadmium is different and far more toxic. But the EU permit the use of this dangerous substance at amounts not exceeding 100ppm. It is not completely prohibited. And they permit its use at higher concentrations in specific exemptions. Under ROHS2 there is a permanent exclusion for photovoltaic cells (and other categories). So cadmium is a dangerous substance, with all the toxicity effects you describe, but not SO dangerous that its use is outright prohibited. Scaremongering by impying an active real possible risk to health from the use of these devices just deflects away from the valid and relevant point about legality. What information do you have about actual reported damage to health in the EU from LDR's or any other device containing cadmium? The metal is present (for inhalation) in tobacco smoke, which is by far the greatest actual source of cadmium that a typical member of the population is likely to encounter. Illegal - Yes. Dangerous potentially - yes. But not dangerous merely from its presence in devices like LDR's as an actual real threat to health. With illegal you are on safe ground.
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Deleted
Deleted Member
Posts: 0
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Post by Deleted on Jul 12, 2014 10:26:35 GMT
I used a linear Sfernice Cermet blagged with a 10k across them, far better than the available film log pots at that time in the 90's. In 2006 I found a film pot that outperformed it so I use that now. Great i also Use Sfernice 'PII VYN' with Vishay bulk metal foil Resistors.. What's the pot that outperformed it? With this pot i can hear all the detail at mega lo level listerning without slightly loosing one channel.
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Post by danielquinn on Jul 12, 2014 10:43:32 GMT
On a serious note. You will see on h's the tale of an 8 year old boy who found poorly discarded mercury and now is confined to a wheelchair. My flippant point was we have a responsibility to others not just the endless satisfaction of our own desires. I see, so you unanimously decided to set yourself up to protect us from ourselves. If you really want to do a public service why don't you pursue the providers of equipment using NiCad batteries. They'll be much more profligate than those using LDRs to control signal level into a power amplifier. There are at least a dozen such batteries within 20 feet of where I'm sat. I don't recall there being a major effort on any any of the suppliers part to alert me to the toxic nature of some of the materials used in the manufacture of said batteries. Wake up, smell the coffee and look at the much bigger picture! Seeing as Joe Public on the whole don't give a rat's arse about proper quality the number of people using LDRs in a device to control signal amplitude is going to pale into insignificance, whereas the majority of modern households will have quite a number of NiCad battery driven devices within them What you have written as absolutely no relevance or purchase on what I have written. You have gone off on an irrelevant rant. Last time I looked batteries where legal. Also absurdly you have taken a flippant point and bestowed upon it the status of the Geneva convention.
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hobnob
Rank: Soloist
Posts: 27
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Post by hobnob on Jul 12, 2014 10:44:06 GMT
There are so many circular and multiply repeated arguments on this thread, it's obscuring the useful debate going on. Can I respectfully ask anyone who is repeating stuff they have already said and points they have already made (especially to each other) to at least think twice before posting and fuelling some very tired arguments.
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