New one for me. Can this really work?

eickmewg

eickmewg

Well-Known Member
I just got a new RCA CD laser lens cleaning disc. Of course it has several nice diagnostic tracks included that are useful. However, one track is billed as a particular tone that demagnetizes components, speakers, cables, and the like. So can someone explain how an audio tone could really demagnetize anything in the audio chain? Seems like BS to me.
 
Register to hide this ad
CD lens cleaners are IMO Dangerous Junk!
Laser lenses are V fragile plastic, dragging some goofball bristle brush across one is Daft.
The bit about demagging speakers thru 'test tones' is less than credible.
Play Frisbee with the odious disc !.. Now.. before someone else thinks about using it.
 
If you are a heavy smoker the disc might bring back the CD player when it gets all gummed up, not a good idea otherwise.
 
It is good for that also, it demagnitizes the alcohol in the beverage, you can drink all you want without getting a headache
 
In other words, Eickmewg,

It is a complete, ignorant, stupid, cheating load of .... [whatever term you prefer for complete ignorant stupid cheating loads of .... (wh...)].
 
Wait,I thought we were told that from that other thread that we're all jerks for criticizing something without trying it.
 
Last edited:
Last ditch cleaning effort on a hard to reach player.

If you are wanting to risk that it might or might not work or MAY possibly damage the player try it.

I personally would try it only in a car player and only with the players owner understanding that there is a risk of damage. :yes:

It all boils down to- "do I take the player out, open it up, clean the lens manually, put it back together and re-install it without breaking anything?" OR do I try this disk? :scratch2:

Mark T. :music:
 
of course it works .. it is so slight with one play though ..i don't think you will notice until after a few thousand plays ..trouble is something is going to wear out before any difference is noticed .. it wont be for the better so don't do it .. to be fair though i have seen them knock dust out of the way and save taking the machine apart . beware of car players and other similar loading players as you might be stuck playing that disc for evermore .
 
eickmewg said:
I just got a new RCA CD laser lens cleaning disc. Of course it has several nice diagnostic tracks included that are useful. However, one track is billed as a particular tone that demagnetizes components, speakers, cables, and the like. So can someone explain how an audio tone could really demagnetize anything in the audio chain? Seems like BS to me.
Click to expand...

Absolutely correct. Go with your gut instinct on this one. :thmbsp:
 
I have an inkling of why they would attempt to say that, but no idea why they could actually make that claim as a product feature.

A demagnetizer for tape heads or tape is basically a transformer that creates a healthy alternating magnetic field around the business end of the device, based on 60 Hz power input (stateside.) The operator moves this magnetic field slowly past the item to be demagnetized, so that the magnetic orientation of the material is left in a random state as the demagnetizer's magnetic field is slowly diminished (by being moved far enough away as to no longer influence the material.)

The frequency of the alternating magnetic field is 60 Hz, which is, of course, an audio frequency. Making that frequency slowly diminish, as to leave a certain material in a random state of magnetic orientation is as simple as slowly lowering the level of the 60Hz audio signal. Getting that signal to operate as a demagnetizer is the challenge. One would need to feed it into a loudspeaker that is not magnetically shielded, and place the item to be demagnetized in that speaker's alternating magnetic field, and then let the tone diminish. But there's the rub. The magnetic output of a loudspeaker coil assembly is designed to do work within the speaker, and anything "wasted" outside the gap is lost as speaker inefficiency. So a speaker's ability to act as a source of demagnetizing magnetic flux lines is limited to how bad the speaker designer was. So it makes a lousy demagnetizer from a practical standpoint, but in theory you could measure some attributes in a lab setting that would mirror a real demagnetizer.

If, by some stretch, they are relying on the magnetic field around just the wires carrying whatever signal they're producing, then that would be an even worse demagnetizer. But it would still meet the laboratory definition of the demag characteristics, which is a slowly diminishing magnetic field leaving random magnetic orientation in the material. But just barely, because the magnetic fields in each case are so very weak in comparison to the real deal.

Snake oil.

Chip
 
eickmewg said:
I just got a new RCA CD laser lens cleaning disc. Of course it has several nice diagnostic tracks included that are useful. However, one track is billed as a particular tone that demagnetizes components, speakers, cables, and the like. So can someone explain how an audio tone could really demagnetize anything in the audio chain? Seems like BS to me.
Click to expand...

Please check and see if there is an additional diagnostic track that will bring back out of spec capacitors and other audio chain components back into spec. If there is, please give us a line on where we can get a copy. :D
 
just dave said:
Wait,I thought we were told that from that other thread that we're all jerks for criticizing something without trying it.
Click to expand...

Been there, done that.

Mine was an Audio Source LLC3(laser lens cleaner).

It also had some neat test tracks and music on it as well.

It never hurt anything, but then again, I cant say it ever helped either.
 
You must log in or register to reply here.
Back
Top Bottom