Why would a company
dedicated to high end audio produce a CD player when audiophiles do not endorse
this medium? Our engineers under Ed Meitner started working on an audiophile
CD player in 1985. A prototype shown at the CES show in January 1986 received
high praise from the audio press. In spite of this it took two more years before
the CD-3 was brought to the market place.
What started as
14 bit 2X over sampling evolved to 16 bit 4X over sampling along with several
- Band Reject
Post Injection Filter (BRPI Filter) was designed by Ed Meitner in 1985 and
this patent pending filter actually removes frequency spikes which according
to most manufacturers are outside the audible range. In our experience this
is not the case and we can demonstrate the effects of our BRPI filter not
only audibly but also using scopes. The frequency anomalies which are outside
the audible range in fact cause measurable distortion in the audible range
by a matter of harmonic association. The result is lack of depth, brightness,
and generally "lifeless" clinical sound usually associated with
Balanced Drive System. Die-cast aluminum parts supported on steel chassis
are spring mounted and balanced. A brass weight is placed on the disc when
it is played. As the disc spins the whole assembly act as a "gyroscope"
which ensures relatively vibration free operation and this minimizes the need
for error correction by more than 50%.
- Dual Isolation.
Used to prevent spurious digital signals from contaminating the output was
another first in the industry. First we use opto-coupling between the digital
filter and DAC. Secondly, we ensure that there is Mechanical and Electrical
isolation between the DAC and Analog section. The drive system, digital and
control electronics are contained in the front chassis. This chassis is mechanically
isolated from the analog section by a solid sheet of Corion. (Corion has all
the properties of marble but being synthetic, can be machined easily). The
signal from the DAC is coupled with the analog section through a current transformer
which completely isolates the DAC from the analog section.
performed on Meitner and Museatex products at our Calgary facility.
Email us at firstname.lastname@example.org or call
(403) 968-1400 for more information.)
The Meitner CD-3
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