FURUTECH deMag LP, DISC and Cable Demagnetizer
The Furutech deMag completely demagnetizes LPs and optical disc media such as CD, CD-R,
Disc Magnetization Is No Mystery
The silk-screened label on an
optical disc contains chemical compounds such as iron, nickel, and cobalt.
These materials are all strongly magnetic and easily remagnetized. The reflective
information-bearing surface of optical media contains 99% aluminum, but 1% of
these same highly magnetic materials! Even aluminum is considered a weak magnetic
conductor.
Amazingly, optical discs actually magnetize as they play! A magnetic field is
actually induced as they spin. This same elemental process takes place with CD,
CD-R,
Other so-called demagnetizers on the market including
specialist products, head erasers, bulk erasers, etc. don’t even completely
demagnetize your discs. Rather, some of them actually induce magnetism! Take spinning demagnetizers, for example. After
the disc stops, a section of the CD is left exposed to the fixed magnet below.
Because Furutech’s deMag Ring Magnet Technology ramps the power up then down again, all
residual magnetism is completely removed.
Demagnetization Isn’t Just For Optical Media Anymore!
The deMag works for disc
media as well as cables, connectors, and
power cords! (See below.) No part of
the playback chain should be disturbed by resolution-sapping magnetic
interference.
The graphs below show that
untreated magnetic fields have a direct effect on data retrieval. These errors
are easily perceived with today’s high resolution systems. Look for coarse
video distortion and listen for grainy, unmusical sound.
But magnetism is a
naturally occurring process, so it can be said by looking at the data below
that it is, in fact, virtually impossible
to achieve a clean, precise signal without going through a properly
designed demagnetization process!
Furutech’s deMag is the answer. It’s the only
way to experience top system performance by demagnetizing optical media, power
cords, interconnects of all kinds, and their connectors! You should know that
demagnetization was a mainstream technique routinely performed by disc
manufacturers all over the world. Because of tight, ultra-competitive pricing,
most manufacturers skip this important step these days. Top performance can only be achieved by demagnetizing all discs before
recording!
Demagnetizing LPs
How can an
LP be magnetized? It’s plastic!
The fact is
that pigment added to the plastic during the manufacturing process is the
culprit. The minute amount of ferrous material in the pigment causes LPs to
become magnetized. Testing at the Tokyo Nanotechnology center with a
The Sound
Demagnetizing
both sides of optical media before
play results in a greater sense of power, dynamics, and resolution, with
cleaner, blacker backgrounds and a larger, more stable soundstage, vivid tonal
colors and deeper extension at both ends of the frequency range. Demagnetization
also allows the delicacy, refinement and nuance of a performance to shine through,
along with micro- and macro-dynamics you need to realize the full potential of
music and movies.
Using the deMag
improves the sense of surround sound
involvement in every two-channel and multichannel home theater system.
Visceral, exciting sound heightens the participatory sense of music and
especially home theater. Details of image and sound that simply weren’t there
before enable a truly extraordinary experience.
The Image
Since the deMag
Demagnetization Process eliminates all magnetic distortion noise, video
displays of all types benefit from less ghosting, color
shift, “snow”, vertical and horizontal interference lines. After treatment you’ll notice a
higher resolution picture with more finely graded contrast, clean and precise,
with bright, beautifully saturated colors and a more sophisticated color
pallet.
Don’t forget that the deMag can also be applied to video systems;
cables, power cords, audio cables and their connectors!
Demagnetizing Cables
Electric current generates a magnetic field as it flows through a power
cord or conductor. However, magnetic
impurities within the materials themselves become magnetized and introduce
further magnetic distortion. Just loop your cables and power cords with their
connectors on the deMag and begin treatment.
No matter how valuable or expensive your system is, the only way to achieve
top performance is by demagnetizing your problems away! There are no other
demagnetizers on the market that can be used in such a versatile and effective
way. The deMag Demagnetizer can even be used on metal-based
accessories like CD stabilizers or speaker terminals.
Testing… Testing
Examining (fig.1 and fig.3) in the graphs below, the
untreated output clearly shows multiple peaks at other than the 1kHz test tone.
These peaks represent noise and distortion caused by magnetic field
interference. The amplitude and fast rise-time of these sidebands indicate a
negative impact on audio and video resolution. Looking more closely, white or
blank areas can be seen in the 1kHz sidebands. Our engineers believe these are
caused by read errors. You can also see small peaks between 200 to 800Hz that
represent noise and distortion products.
|
Fig.1 Untreated |
Fig.2 Treated |
Fig.3 Untreated |
Fig.4 Treated |
|
|
|
|
|
After demagnetization, the excessive peaks in the 1kHz
sidebands disappear, as do the blank “read problem” areas. The peaks become
more uniform in height and chaotic interference patterns seen before
demagnetization are almost gone. The peaks of other sideband components are
more uniform and the range between 200 to 800Hz is cleaner. These graphs
clearly show that the S/N ratio is much improved after demagnetization, while
audible distortion is lowered.
Note the highlighted areas in fig.4 at about 20 seconds between 1kHz and 5kHz.
You can see the number of peaks increases, meaning there’s more information as
a result of demagnetization. The peaks’ height also generally increase with the
same result—more information.
CD Test
Recording Time
|
|
Output Power Level PWL dB |
Total Harmonic Distortion % THD |
Signal-to-Noise Ratio % SNR |
|
No YUMI |
-13.36 |
72.11 |
2.047 |
|
UC YUMI |
-13.36 |
71.75 |
2.117 |
|
RD YUMI |
-13.94 |
70.99 |
1.866 |
No YUMI: Music
CD prior to deMagnetization
UC YUMI: Results
of treatment with another brand of CD deMagnetizer
RD YUMI: Results
of treatment with Furutech deMag DeMagnetizer
Note that RD YUMI -- the deMag treated measurements -- has the
lowest output power level (PWL). Interestingly the Peak Level Analyzer shows more peak activity as the noise floor
drops post-demagnetization. DeMag treatment also makes for the lowest
THD; evidently demagnetization lowers distortion as well.
Looking at UC YUMI using another brand of demagnetizer
we see the signal-to-noise ratio actually increases
after treatment! The other device under test doesn’t ramp up, hold, then ramp
down its power like the deMag. Our analysis reveals this device
doesn’t, in fact, demagnetize anything, but simply lines up or makes uniform
the alignment of an existing magnetic field. That’s
why the
CD-ROM Test
Notice the Read value is 590KB/s with 65 points total prior to demagnetization, and 620KB/s with 69 points
after demagnetization. The rising rate seems to indicate the deMag improves the read performance of CD-ROMs.
There are times when a CD-ROM or
|
|
READ KB/s |
Total |
|
Before |
590 |
65 |
|
After |
620 |
69 |
The above measurements were made with a Marantz CD-16SE
Player and NEC PC-98 Xa7 Computer running Spectral Lab’s Soft-Sound.
More Furutech Technology: Two-Stage
Cryogenic and Demagnetization Alpha Process
Using cutting-edge technology and
materials, Furutech developed a low-temperature two-stage process that
significantly improves every facet of audio and video performance. The
treatment begins during the manufacturing process with a deep, conditioning
cryogenic freeze of all metal parts. Using high-end refrigerants -- liquid N2
or He -- Furutech achieves temperatures of between -196 to -250C. The treated
parts actually change their molecular structure at these extremes of
temperature relieving internal stress. The
molecules bond together more tightly and the overall structure becomes more
stable. This improves electrical conductivity and so power and signal transfer.
Step two in the Alpha Process
exposes these same parts to the patented Ring Demagnetization treatment as
found in the deMag. Ordinary high power magnets used for this purpose often
increase magnetization effects; they leave some areas more magnetized than
others. Our patented process uses controlled attenuation to completely
eliminate magnetization for immediately more vivid and colorful improvements. Ring Demagnetization further enhances
conductivity of all treated materials.
All metallic parts used
in Furutech products go through the Alpha Process to keep all connectors,
conductors, and metal parts in a perfect stress-free, stable and highly
conductive state.
Supporting
Data
Components used for this test:
CD
player - Marantz CD-16SE
Computer
- PC-98 Xa7
Spectral Lab’s Soft-Sound Technology
Specification:
·
Dimension: 487mm/19” W × 68mm/2.7”
H (without spikes) × 470mm/18.5” D
·
Net Weight: 11.0Kgs/24lbs
·
Rating: 110VAC ±15V (
·
Rating: 230VAC ±10V
(
Licensed by Sekiguchi
Machine Sales Ltd. (Japan)