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Old 21st January 2013, 01:25 PM   #4951
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Although ingenious, it seems complicated for an amateur like myself. Wouldn't it be a lot simpler to just put it in a closed box away from heat sources and perhaps heat the box with a resistor to keep temps consistent?
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Last edited by mike_mcf; 21st January 2013 at 01:32 PM.
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Old 21st January 2013, 08:22 PM   #4952
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Quote:
Originally Posted by mike_mcf View Post
Although ingenious, it seems complicated for an amateur like myself. Wouldn't it be a lot simpler to just put it in a closed box away from heat sources and perhaps heat the box with a resistor to keep temps consistent?
Yes Mike, for something that has been proven and working for years by those that have bought and made them as I've stated many times. This and many more that have tried to overcomplicate are just proving what the old adage says "if it aint broken, don't fix it".
I have in the past tried also with master of electronics that can put anyone here to shame to make a system that monitors and re-calibrates automatically, it becomes a complex nightmare that in the end detracts from the purity of the sound.
Because the only way to do it right is to monitor the resistance at different volume levels of each and every ldr, this in itself has to be connected to where the music signal is present and creates it own set of problems, like a feedback arrangements can.
BTW my prototype MkII that I use, was made some 8 years ago and is still in balance, and is on most times 24/7

Cheers George
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Old 22nd January 2013, 06:30 PM   #4953
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Quote Lightspeed Attenuator a new passive preamp

I thought the issue of plagiarism and in fact posting simply to draw attention to ones own agenda, had been well and truly buried here ? I wondered when someone was going to pick up on this, heís been riding on the back of this thread for a while now and making money and itís getting worse
I for one am tired of it. Although I don't contribute a lot here, I read every post with interest, having been a LS owner for more than 6 years. It strikes me as going against almost everything that diyAudio stands for.

Leave this thread alone, unless you have a worthwhile contribution. By all means, promote your LDR's/Product, but on your own thread.

This is purely for discussion of Georges Product, its design and merits. Given the number of posts to date, I'd say it seems quite popular ?

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'Nutz
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Old 22nd January 2013, 10:04 PM   #4954
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Quote:
Originally Posted by Audionutz View Post
Quote Lightspeed Attenuator a new passive preamp

I thought the issue of plagiarism and in fact posting simply to draw attention to ones own agenda, had been well and truly buried here ? I wondered when someone was going to pick up on this, heís been riding on the back of this thread for a while now and making money and itís getting worse
I for one am tired of it. Although I don't contribute a lot here, I read every post with interest, having been a LS owner for more than 6 years. It strikes me as going against almost everything that diyAudio stands for.

Leave this thread alone, unless you have a worthwhile contribution. By all means, promote your LDR's/Product, but on your own thread.

This is purely for discussion of Georges Product, its design and merits. Given the number of posts to date, I'd say it seems quite popular ?

Regards

'Nutz

Woah! Gotta jump in here.

This is not a vendor bazaar thread. Presumably, George started this thread to help DIY build their own LDR attenuator. If he wanted to promote or support his own commercial product (which isn't even DIY, so why would he be here?) then he should have gone to the vendor bazaar. This thread is for DIYers who want to build their own LDR attenuator. George provided the schematics and then said "Hey go get your own parts."

For a long time Uriah was the only source for matched LDRs, although now there are others and we know how to match our own using low cost devices. In contrast to George, Uriah does sell parts and kits to assist DIYers in building an LDR attenuator. In general, he takes commercial traffic off the forum, although some users ask questions about his products here. He typically replies via PM. Uriah does have a signature link to his website, which I consider to be a service, not an annoyance.

Hey, I will promote him: If anybody wants to look at a variety of LDR solutions, including switching and remote control, check out Build An Amp. I am in no way affiliated with Uriah. That is a service to members of this forum and in no way hurts George.

Both Uriah and George are vendors of LDR products and both promote their wares in this forum (Uriah subtly, George not so subtly). Since it is a non-commercial forum, if you think that is violation of DIY Audio rules, then report it. At least Uriah has a DIY product.

Think about this for a second: George makes a commercial product, but he comes on this thread to tell us how to make our own and not buy his product. What's the marketing logic of that? Not exactly an A+ in business school. Perhaps some will decide not to build their own and buy George's product -- there's some marketing strategy in that. Most of us DIYers were not going to buy the commercial product anyway, so we're not hurting George any more than he hurt himself by starting this thread.

I also recall that some suppliers have asked George if it is OK to post in this thread and he long ago gave permission for that. Hats off to George a true friend of the DIY community.

Keep in mind that both George and Uriah have done a great service in assisting us DIYers in constructing and designing our own LDR attenuators. Don't screw it up for the rest of us who gain valuable information from Uriah's posts. Nutz, you Uriah an apology.
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Old 22nd January 2013, 10:49 PM   #4955
troystg is offline troystg  United States
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Originally Posted by mike_mcf View Post
.......

Keep in mind that both George and Uriah have done a great service in assisting us DIYers in constructing and designing our own LDR attenuators......
Both do this for personal gain and both WAY MORE than return the privilege by helping others in true DIY spirit. Both are honorable individuals.
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Old 22nd January 2013, 11:41 PM   #4956
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Quote:
Originally Posted by mike_mcf View Post
Woah! Gotta jump in here.

George started this thread to help DIY build their own LDR attenuator. This thread is for DIYers who want to build their own LDR attenuator. George provided the schematics and then said "Hey go get your own parts."
Woah there sunshine, you got that a little misconscrewed, yes at first I only gave the idea across for diyers so to use their minds a little, then I gave the schematics, but still held back on the brand/location of the LDR's and matching, again to get the diyers to use their minds a little more, then I showed how to match and where to get the components. I learnt this way of teaching from the master (even though he can be an outright pig sometimes) the one and only Jocko Homo (RIP from these forums)
udailey came in years after this, and asked me if I minded him doing matched ldr's for the diyers. I said yes to the matched ldr's only if they are done right, as I do them, and no kit sales or made up units to be sold, and I think it was 10% precentage of the matched ldr sales had to go back to diyaudio as donations.
So now you have the whole story.
Cheers George
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Old 23rd January 2013, 12:20 AM   #4957
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Those issues are between you and udailey and none of audionutz' business. Perhaps you didn't know what you were starting up here and how enormously popular your idea would be on DIY Audio. As troystg posted above, both of you have contributed greatly to us DIYers and we are greatful. And as always, you are a gentleman.
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Old 23rd January 2013, 12:34 AM   #4958
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That's ok Michael, but get the facts before posting, especially when it's about me. I knew I would be big, how big I didn't know. Because of feedback and interest back in 1979 or whenever it was, everyone was stunned at the sound then compared to preamps but it was about as reliable as an as a drunk in a brewery, Melos found that out in the 90's also.

Cheers George
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Old 23rd January 2013, 04:00 AM   #4959
gootee is offline gootee  United States
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Quote:
Originally Posted by Audionutz View Post
Quote Lightspeed Attenuator a new passive preamp

I thought the issue of plagiarism and in fact posting simply to draw attention to ones own agenda, had been well and truly buried here ? I wondered when someone was going to pick up on this, heís been riding on the back of this thread for a while now and making money and itís getting worse
I for one am tired of it. Although I don't contribute a lot here, I read every post with interest, having been a LS owner for more than 6 years. It strikes me as going against almost everything that diyAudio stands for.

Leave this thread alone, unless you have a worthwhile contribution. By all means, promote your LDR's/Product, but on your own thread.

This is purely for discussion of Georges Product, its design and merits. Given the number of posts to date, I'd say it seems quite popular ?

Regards

'Nutz
Oh dear! Implying that making money or that making a (gasp!) profit is somehow untoward, or wrong, is promoting a political agenda (and is most-utterly misguided, in my opinion), which is not tolerated, anywhere on diyaudio. I am profoundly offended by your post. Please, cease and desist from posting anything else with any implied or overt socialist or communist dogma.
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Old 23rd January 2013, 06:42 AM   #4960
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That one has double meaning written all over it Tom. Even a dumb **** like me can pick up on it.

Cheers George
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