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Demag CD's really!?...
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Demag CD's really!?...
On 07/11/2017 21:37, tony sayer wrote:
http://www.fidelityaudio.co.uk/fidel...emagnetiser--- sacd-xrcd-shmcd-4007-p.asp I thought CDs were made of plastic and aluminium and read by light beams, what's there to magnetise? -- Graeme Wall This account not read. |
Demag CD's really!?...
"tony sayer" wrote in message ... http://www.fidelityaudio.co.uk/fidel...emagnetiser--- sacd-xrcd-shmcd-4007-p.asp -- Are we saying that Rip-Off Russ has got home grown competition? -- Woody harrogate3 at ntlworld dot com |
Demag CD's really!?...
Graeme Wall wrote:
-------------------- On 07/11/2017 21:37, tony sayer wrote: http://www.fidelityaudio.co.uk/fidel...emagnetiser--- sacd-xrcd-shmcd-4007-p.asp I thought CDs were made of plastic and aluminium and read by light beams, what's there to magnetise? ** Only applies to "heavy metal" tracks on the CD. ...... Phil |
Demag CD's really!?...
There will always be this kind of thing.
There is also an LP demsgnetiser, Obviously not cheap . Its funny you mention Russ Andrews. Heard about his Superfuses? Now, if a dealer sold this kind of thing You could perhaps audition first. |
Demag CD's really!?...
On 07/11/2017 21:37, tony sayer wrote:
http://www.fidelityaudio.co.uk/fidel...emagnetiser--- sacd-xrcd-shmcd-4007-p.asp I'm sure I'm going to regret this . . . why does the screenshot show different waveforms? -- Cheers, Rob |
Demag CD's really!?...
Yerwat?
Is this another bit of snake oil? Give me the green rings any day, you could play hoopla with those. Brian -- ----- - This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please! "tony sayer" wrote in message ... http://www.fidelityaudio.co.uk/fidel...emagnetiser--- sacd-xrcd-shmcd-4007-p.asp -- Tony Sayer |
Demag CD's really!?...
The brains of the marketers I'd imagine.
Brian -- ----- - This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please! "Graeme Wall" wrote in message ... On 07/11/2017 21:37, tony sayer wrote: http://www.fidelityaudio.co.uk/fidel...emagnetiser--- sacd-xrcd-shmcd-4007-p.asp I thought CDs were made of plastic and aluminium and read by light beams, what's there to magnetise? -- Graeme Wall This account not read. |
Demag CD's really!?...
Or perhaps garage?
Brian -- ----- - This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please! "Phil Allison" wrote in message ... Graeme Wall wrote: -------------------- On 07/11/2017 21:37, tony sayer wrote: http://www.fidelityaudio.co.uk/fidel...emagnetiser--- sacd-xrcd-shmcd-4007-p.asp I thought CDs were made of plastic and aluminium and read by light beams, what's there to magnetise? ** Only applies to "heavy metal" tracks on the CD. ..... Phil |
Demag CD's really!?...
Many years ago I saw a fuse repair kit being offered in an old magazine. It
seemed to consist of a couple of springs and various bits of fuse wire. You clipped the clips on the ends and the wire underneath them I understood, however no concept of fast or slow blow and how much it overstretched the fuse holders is anyone's guess! Why bother when any old bit of wire would do... grin. Brian -- ----- - This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please! "Woody" wrote in message ... "tony sayer" wrote in message ... http://www.fidelityaudio.co.uk/fidel...emagnetiser--- sacd-xrcd-shmcd-4007-p.asp -- Are we saying that Rip-Off Russ has got home grown competition? -- Woody harrogate3 at ntlworld dot com |
Demag CD's really!?...
On 08/11/2017 03:38, Phil Allison wrote:
Graeme Wall wrote: -------------------- On 07/11/2017 21:37, tony sayer wrote: http://www.fidelityaudio.co.uk/fidel...emagnetiser--- sacd-xrcd-shmcd-4007-p.asp I thought CDs were made of plastic and aluminium and read by light beams, what's there to magnetise? ** Only applies to "heavy metal" tracks on the CD. Good point! -- Graeme Wall This account not read. |
Demag CD's really!?...
On Wed, 8 Nov 2017 07:30:14 +0000, RJH coalesced
the vapors of human experience into a viable and meaningful comprehension... On 07/11/2017 21:37, tony sayer wrote: http://www.fidelityaudio.co.uk/fidel...emagnetiser--- sacd-xrcd-shmcd-4007-p.asp I'm sure I'm going to regret this . . . why does the screenshot show different waveforms? "We have designed the DM1 with a second demagnetisation cycle at a different frequency as we find this offers optimal performance. Each demagnetizing cycle on the DM1 takes approx 10 seconds. " -- Graham. %Profound_observation% |
Demag CD's really!?...
torstai 9. marraskuuta 2017 10.42.03 UTC+2 Brian Gaff kirjoitti:
I have a demag cassette from tdk this is simply an oscillator withe a small button cell and a microswitch behind the coil that pusheds up to the head when play is pressed. it is designed to tail off slowly. Demagnetizers (proper name degaussers) for reel to reel machines work in a similar way, but are more effective than their cassette machine counterparts. The principle is simple: an electric solenoid, or coil, powered by alternating current, which produces a magnetic field the strength of which alternately expands and contracts. With the tape machine switched off, the degausser is gradually moved into the close proximity of each head in turn (but not touching it) and gradually pulled away after a few seconds. All three heads are normally degaussed, (although the erase head does not require it:-) It is important to degauss the tape lifter path, and the capstan also. I remember that one of our instructors used to wipe the end of the degausser probe with a small piece of chamois leather, which he then waived mysteriously in the air to allow the magnetism to fall to the floor:-)) Strangely enough, most of the assistants followed his example, and did the same thing. This same instructor, a serious and rather quiet chap, had a wonderful sense of humour. He once told an assistant in the lift, who was carrying a box containing a 2" 24-track tape that the lift compartment, made from sheet steel, lacked a Faraday cage, so he (the assistant) should keep turning in an anti-clockwise direction all the time the lift was in motion. Some months after this, the technical director mentioned that he was taking some visitors on a studio tour, and shared a lift with a very courteous young fellow carry a multitrack tape, who kept turning in circles in front of them. But back to degaussing, after which the tape heads, lift mechanism, and capstan need to be cleaned with the proper fluid using a cotton bud (or the same piece of chamois leather from which the magnetism has been shaken:-) Degaussing a CD would perhaps involve the same routine, but with a larger and higher quality of chamois leather, available separately from a specialist audio dealer at a very high price :-) Iain |
Demag CD's really!?...
Brian Gaff wrote:
------------------ I have a demag cassette from tdk this is simply an oscillator withe a small button cell and a microswitch behind the coil that pusheds up to the head when play is pressed. it is designed to tail off slowly. Not sure what frequency it uses. ** Don't you hear a sound via your speakers when it operates ?? I would be expecting a damn loud one. Could this advert merely be incorrectly labelled? ** Nope, it's clearly a supply frequency de-magnetiser with tapering output. Likely it would do a good job on a cassette tape or small steel objects. ..... Phil |
Demag CD's really!?...
In article , Iain
wrote: This same instructor, a serious and rather quiet chap, had a wonderful sense of humour. He once told an assistant in the lift, who was carrying a box containing a 2" 24-track tape that the lift compartment, made from sheet steel, lacked a Faraday cage, so he (the assistant) should keep turning in an anti-clockwise direction all the time the lift was in motion. Some months after this, the technical director mentioned that he was taking some visitors on a studio tour, and shared a lift with a very courteous young fellow carry a multitrack tape, who kept turning in circles in front of them. I'm now wondering if he was assuming the lift was rising/falling at a relativistic velocity. That might have made a Faraday cage relevant to magnetic field. But I have my doubts anyone on Earth would then get a chance to check the tapes later on. 8-] Jim -- Please use the address on the audiomisc page if you wish to email me. Electronics https://www.st-andrews.ac.uk/~www_pa...o/electron.htm Armstrong Audio http://www.audiomisc.co.uk/Armstrong/armstrong.html Audio Misc http://www.audiomisc.co.uk/index.html |
Demag CD's really!?...
I wonder if you could use the ally sheet in a cd like a linear motor uses a
rail? Could launch old CDs into the sky for clay pigeon shooting. Brian -- ----- - This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please! "Brian Gaff" wrote in message ... Yerwat? Is this another bit of snake oil? Give me the green rings any day, you could play hoopla with those. Brian -- ----- - This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please! "tony sayer" wrote in message ... http://www.fidelityaudio.co.uk/fidel...emagnetiser--- sacd-xrcd-shmcd-4007-p.asp -- Tony Sayer |
Demag CD's really!?...
On Sat, 11 Nov 2017 09:12:45 -0000, "Brian Gaff"
coalesced the vapors of human experience into a viable and meaningful comprehension... I wonder if you could use the ally sheet in a cd like a linear motor uses a rail? Could launch old CDs into the sky for clay pigeon shooting. Brian If you want novelty, there is a mag-lev turntable. https://thevinylfactory.com/news/lev...mag-lev-audio/ -- Graham. %Profound_observation% |
Demag CD's really!?...
In article ,
Graham. wrote: On Sat, 11 Nov 2017 09:12:45 -0000, "Brian Gaff" coalesced the vapors of human experience into a viable and meaningful comprehension... I wonder if you could use the ally sheet in a cd like a linear motor uses a rail? Could launch old CDs into the sky for clay pigeon shooting. Brian If you want novelty, there is a mag-lev turntable. https://thevinylfactory.com/news/lev...mag-lev-audio/ Be fun with a Decca FFSS cart that could pick up hum from anything within a 100 yards. ;-) -- *I don't work here. I'm a consultant Dave Plowman London SW To e-mail, change noise into sound. |
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