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I have been trying various powerful spotlights and have found one that actually works extremely well. At first I used a 250,000 candle-power light and then a 2 million candle-power. Neither of these gave me the kind of change in overall performance that had been described by people who have the Nespa Optical Finalizer Pro. While out with my wife shopping, we stopped at Advanced Auto Parts and I saw the "light of my life." Ha Ha. It is the Professional's Favorite 10 Million Candle-power Spotlight. It weighs 10 pounds and uses a 12 volt battery similar to that used in a motorcycle with an H4 bulb quartz halogen type. It cost $38 and I said to myself, "What the hell." So I bought it, took it home, pulled out an old CD first, took a piece of white cardboard, placed it on the floor, put the CD read-side up and placed this light cannon on top, centering the CD in the middle. I turned it on for 1 minute and to my great surprise, the CD was quite hot and I thought, "Oh, my God, this is too much." But after placing it into my player, I couldn't believe the enormous improvement in depth, bass and high frequency extension. You see, the CD I had chosen for this experiment was a cheap oldies supermarket product and I in no way expected it to sound anywhere near as good as it did. I did this to several CD's, better quality ones, I might add, and the change is universal. I had my 17-year-old son come down to verify all this and he was quite amazed. We then decided to "nuke" a DVD. After several before and after observations, we were quite impressed with the overall increase in contrast and clarity of each DVD shown on my projector.Needless to say, I was taking a chance with the CD's and the DVD's because of the fact that the light does make the CD quite hot. I checked for damage and couldn't find any, but I would say if anyone were to try this with one minute of exposure, the change is quite remarkable. But you may want to limit the exposure time to 30 seconds or so to start.
Follow Ups:
I saw the same thread about 2 weeks ago and used a 2 million candlepower spotlight (good for keeping drunken neighbors quiet at 3-4 am - they stop yelling when they can't see what they are doing!) according to EdM's method. I 'sacrificed' a bottom of the pile CD and was quite surprised at the results. Since, I have done about 40 CDs with at least good results, but some significantly better than others. What is going on here? I even heard things from my car player (admittedly a hard test) while going 75 mph with a 25 mph headwind that I've never heard before - crowd noise from a live recording for one aspect.Also did a CD for my brother without prepping him at all and he heard it on the first note! (Jackson Browne's The Pretender with a much tighter, tuneful bass note.) Funny seeing him with that "Wha?" look on his face!
This is definitely a tweak worth trying but I'm also wondering about its effects on long-term play - will we get CD rot? A laser beam shooting the ceiling because the reflective layer is too thin?
Todd
Thanks for your work and post.
with CDR's, you are supposed to keep them out of strong light, like direct sunlight, or risk ruining the data, or at minimum shortening the life.I assume then you mean only commercially bought CD's, not "burned at home" CDR ones? Was this point already covered?
Bob
If i were you i'd make sure that the treated copy is bit identical to the original. Just 10 minutes with EAC would provide an answer to this. There may be some subtle damage which the non-believers would say sounds as improvement.If the two copies remain bit identical after treatment then whatever improvement is audible is likely due to change in jitter - either for the better or worse but this is really hard to measure.
For a CD it is imposible to introduce jitter, same as it is for cables. You need to understand concept of serial and parallel transfer of data. Any jitter introduced while data is in serial form is meaningless as long as data can be received without bit errors. If it is received with bit errors entire connection can crash, and then must be recovered again, (automatic ofcourse). There is no way to make this inaudible, as this may need up to several seconds to sync all clocks and colided data. Now, to do A/D conversion data MUST be in parallel form. You people need to understand this idea. To convert serial to paralel you MUST have a buffer memory to store serial data first. So any jitter already introduced is meaningles as data is clocked again to go from serial to paralel. The only jitter important is when you go from parallel to analogue. Now keep in mind that data through a cable are serial, where jitter does not matter, and data from CD is read in serial form where jitter DOES NOT matter. So if data on CD is without (or with same) bit error rate before and after treatment, is the same, I can guaranty to you there is no difference in audio signal either.
Why do some people find so hard to conform to rules of science? I just don't get it. You are not talking about something that it is mistical or not understood. You are talking about well known things such as 1+1=2. Are you going to argue about this as well? I don't get it.
[ For a CD it is imposible to introduce jitter, same as it is for cables. ]Wrong.
[ Any jitter introduced while data is in serial form is meaningless as long as data can be received without bit errors. ]
Wrong.
[ So any jitter already introduced is meaningles as data is clocked again to go from serial to paralel. ]
Wrong.
[ The only jitter important is when you go from parallel to analogue. ]
Sorta right, but this overlooks why all the other statements you made are wrong.
[ I don't get it. ]We know.
The reason that all those other factors DO affect jitter, is because everything inside a CDP/DVDP or DAC is coupled together via the power supply.
To this day, no one has made a power supply with zero load reactions, and zero ground impedance. So if you have PS load transient voltage variations (and in ALL CDP's/DAC's, we do), and if you have ground bounce, you are going to have the various subsystems coupling into each other, affecting the power supply and ground, and thus affecting the DAC chips conversion timing of the data to an analog signal.
I go through this at:
http://www.geocities.com/jonrisch/jitter.htmand via the following references, cited in the jitter page and at my Annotated Cable Bibliography at:
http://www.geocities.com/jonrisch/c4.htm
********************************
References for the jitter notes at:
http://www.geocities.com/jonrisch/jitter.htmhttp://www.digido.com/jitteressay.html
AND
http://www.digido.com/wegetletters.html#anchor2484124
http://www.axon.nl/axon/axon_comp.nsf/whitepapers/whitepapers/$file/jitter.pdf
http://www.galstar.com/~ntracy/acg/AandE/npt.on.jitter2.htm
http://www.stereophile.com/fullarchives.cgi?280
(An archived Stereophile review, that shows measured jitter levels.)http://www.essex.ac.uk/ese/research/audio_lab/malcolmspubdocs/C41 SPDIF interface flawed.pdf
PDF of " IS THE AES/EBU/SPDIF DIGITAL AUDIO INTERFACE FLAWED?, Dunn, C. and Hawksford, M.O.J., 93rd AES Convention, San Francisco, preprint 3360, October 1992http://www.dcsltd.co.uk/papers/jitter.pdf
(Talks about optical based jitter problems toward the end)http://www.nanophon.com/audio/jitter92.pdf
http://www.nanophon.com/audio/diagnose.pdf
http://www.nanophon.com/audio/towards.pdf
http://www.homecinemachoice.com/frame.html?http://www.homecinemachoice.com/testbench/DVDPlayers/DVDSound.shtml
http://www.benchmarkmedia.com/appnotes-d/jittercu.asp
http://www.music.mcgill.ca/~martin/bibliography/digital/d_conversion.html
http://www.audioprecision.com/publications//audiotst/jan96/jan961.shtml
http://www.audiotest.com/publications/audiotst/dec99/jitter_theory.html
NEW URL -
http://audioprecision.com/publications/audiotst/dec99/Dec-99.pdf
http://audioprecision.com/publications/audiotst/april00/Apr-00.pdf
http://www.jitter.de/english/engc_navfr.html
(This site has many links to good references, as well as decent explanations of what jitter is, etc.)Replication News Article on Jitter:
http://www.AudioAsylum.com/audio/general/messages/977.htmlRoger Nichols Article on CD mastering jitter:
http://www.rogernichols.com/EQ/EQ_2000_02.htmlRE CD-R sounding better than the original:
http://www.AudioAsylum.com/audio/tweaks/messages/42391.htmlOn laser light and jitter:
http://www.AudioAsylum.com/audio/tweaks/messages/27625.htmlhttp://www.elantec.com/pages/apppdf/d40954.pdf
(Impedance variations of a short cable, note may contain technical errors, graph labeling is not consistent)http://www.toshiba.com/taec/components/Datasheet/TOTX173.pdf
(One of the more popular TOSLINK optical components)Digital Logic chip output waveforms and ground bounce info:
TI
http://www-s.ti.com/sc/psheets/sdya010/sdya010.pdf
page23-26, waveform views of various devices, shows great shots of non-square square wavesFairchild
http://www.fairchildsemi.com/ms/MS/MS-541-MISC.pdf
Pages 10-16, digital logic waveforms, showing less than perfect logic signal transmission, ringing, ground bounce, etc. Esp p. 15-16
http://www.fairchildsemi.com/ms/MS/MS-539-MISC.pdf
Shows good waveforms on page 4, also t-line effects for 3 foot cables.
http://www.fairchildsemi.com/an/AN/AN-831.pdf
Shows RF output of logic chips.
http://www.fairchildsemi.com/an/AN/AN-754.pdf
Shows mis-termination results, and (best case) real world waveforms.
http://www.fairchildsemi.com/an/AN/AN-375.pdf
Clearly shows waveform abberations due to the real world.info on voltage regulator transients, re digital audio and jitter.
http://www.cherrysemiconductor.com/product/PDF/CS-5233-3PDF.pdf page5
http://www.linear-tech.com/pdf/lt0117.pdf, page 5
http://www.national.com/ads-cgi/viewer.pl/ds/LM/LM117.pdf, page 4
http://www-s.ti.com/sc/psheets/slvs297a/slvs297a.pdf
Fig. 12 and Fig. 13Ground Bounce Info:
Good basic tutorial.
http://www.ultracad.com/g_bounce.pdfShows actual measurements, scope pics, etc.
http://www.fairchildsemi.com/an/AN/AN-640.pdfAbout grounds.
http://www.signalintegrity.com/news/2_12.htmAND I add this URL:
Empirical Audio about digital cable length:
http://www.positive-feedback.com/Issue14/spdif.htm
Jon Risch
nt
....that the substrate is made to better conform to the body of the disc due to this intense light, and *no* bits are being changed whatsoever. It seems to me that the laser is reading a flatter surface, and therefore transfering the data more uniformly as well....hence better sound. This may be an entirely physical phenomenon rather than an electrical one, although they are inherently related. My 3 cents.
Yup. I woudn't expect a bit change if the cd is not really fried. If the surface was indeed made flatter the refocusing system and error correction would have an easier time and would introduce less PS related jitter.
....a little simpler than I....thanks.
follow that path and feel everyone else should also.lets make audio equipment that measures perfectly and screw it if it doesnt sound good because my equipment says it is good.
this hobby is ultimately about how things sound and not how they measure.
but im pretty sure you already know that.
please dont let sysinfo stop you from posting because he needs test data.
If you think that what you are doing is just a hobby, then DO NOT try to be technical and explain your imaginary results using science. You should say: "I used this or that, and it made me hear this or that". Do not say "I did this or that, and it created this or that". Do not mislead people who know nothing about science. Or before you even know it, someone will say "I had a dream about doing this to make it sound like this", and there is a prophecy. Should I tell you what prophets created? I think you already have CNN in your home. Go see it, it's imagination channel, but you all turn to it. Hm, back to square one.
I doubt your procedure has done anything to a CD. If CD is changed in any way, then you could measure it. Did you measure anything? I don't think anyone serious would rely on someone's else listening experiance. If your measurment is same as mine, and your listening experiance is different than mine, then aperently one of us would be wrong. What do you think could change in CD to make it sound different?
I mean, it was logical, right ? How many ways can a bunch a bits go wrong down a one meter length of decent wire ? Then I heard the latest generation of primo digital IC, realized that me head wuz up me bum on this particular. So, ya never know...
So, if you're so set on measurements, what measurements should be made? Why do you want those particular tests?How do you know that measurement, or set of measurements, is capable of capturing all of the relevant information?
Are you prepared to accept the results of such tests from an individual, or will you then start arguing that they need to be undertaken by a reputable authority? Who would be such an authority?
Frankly, I don't see why anyone reporting their experience has to bother with demands for testing unless the person making the demands is prepared to state just what tests they want, why they think those tests are appropriate, and commit to accepting the results from the person they are asking to do the tests if that person chooses to run them. If you aren't prepared to say what would satisfy you and agree to accept the results from the person you're asking to do the test, I can't see why anyone would bother to do them for you since all they're going to get in return if the tests are positive is a pile of stuff about why the tests aren't worth anything.
David Aiken
There are only 2 relevant things to measure, Amplitude and Time. Everything else is derived from this 2. If you capture this 2, you captured ALL posible data that can exist in a signal. Do you understand this?
Anyone with capable equipment is OK with me to take and show data. But does anyone of you here have digital scope at least? And how many of you who have acces to such equipment know how to even turn it ON? Would you know?
I don't realy care if he likes to light up his CDs, fine. But he is telling rest of us to do the same. No offence to him, cause you all tend to recommend such redicilous things. I don't mind that people like to experiment, that's cool. But results of an experiment have to be proven if claims are to be made. I am not claiming anything, you do.
I do not need anyone to do tests for me, I can do them myself, and can do them for you too. Will you accept then that you are imagining most of the things? I didn't think so.
x
nt
Is there any point talking to someone who seems to forget that the reason for music reproduction is listening to music with your ears rather than measuring it with a piece of equipment?
nt
Thanks for sharing FastI had read about someone doing this (maybe you) a few weeks back and have been wanting to try it
One question that I'm not clear on
Do you place the spotlight dirictly over the CD or do you space it some distance??
One moreDo you notice a differance between the 1 min and 30 sec treatment??
TIA
Julien
"There's someone in my head, but it's not me"
Sorry to upset you,i will keep any other info to myself.
.
Yours was an interesting and informative post and added to previous info hear regarding light/heat treatments. There's always naysayers. Just try to ignore them and remember that YOU are contributing...Microwaves...what a dolt...
*** Q:Why's the chicken cross the road?
***A: Fats Waller: They don't, they all stay on my side now...***
There are actually people around here that appreciate hearing about each others experimental efforts. Thank you BTW.
I accidentally tried this with one of my cryogenically treated CD's and it made the damn thing sound just like it did from the factory.I think it also cancelled out the effects of my Bedini clarifier, too.
Go put a disc in the microwave for real. You will find that the reflective layer burns to a crisp in about a second, rendering the disc useless.
x
what else, within reason, does nuke mean?
my opinion doesn't change!
nuttin' here
...before you'll catch *me* going and spending thirty-eight (38!) hard-earned dollars chasing a chimera.Hell I could go out to a great restaurant for twice that price...
clark
....this unit *will* make you double-blind. Caveat empty, y'all.
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