- Type: Low output moving coil mono cartridge
- Magnet:Multi Alnico magnets with Flux damper
- Output Voltage: 0.25mV (at 1KHz, 5cm/sec. RMS horizontal)
- Frequency response: 20 - 50,000Hz
- Compliance: 6 x 10-6 cm/dyn (horizontal)
- Tracking force: 2.6 - 3.2 grams
- Impedance: 7 ohms
- Recommended load resistance: > 30 ohms
- Cantilever: 6mm, 0.3 mm dia. solid boron
- Stylus: PF Line contact shape
- Stylus radius: 7 x 30 micron
- Weight: 12.6 grams
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The new Dynavector XV-1s mono cartridge has been developed due to enthusiastic
requests from mono record lovers, worldwide. The XV-1s mono has not been
designed as a typical, old fashioned mono cartridge, but developed as a true
high fidelity component. It is designed to provide the highest performance and
extract the greatest musical expression possible from mono records. The XV-1s
mono follows from the innovative design and technology of the acclaimed XV-1s
stereo cartridge and incorporates the following details and considerations:
Compliance in horizontal and vertical directions
Musical information is recorded in the horizontal direction on mono records.
Tracking the vertical elements will only lead to extraneous noise or potential
damage of the record groove. Given this, the compliance of the XV-1s mono in the
vertical direction has been set considerably lower compared to that of the
horizontal direction. A somewhat "thin" and harsh sound is often experienced
when playing a mono record with a normal stereo cartridge. A stereo cartridge
picks up both the horizontal and the vertical groove information so that both
the music and unnecessary noise are reproduced.
Special coil bobbin design
The corner of the coil bobbin (armature) of the stereo cartridge is oriented
at a 45 degree angle to the record surface in order to pick up both horizontal
and vertical groove modulations. With the XV-1s mono, the bobbin is rotated to
be parallel to the record surface. Therefore, sensitivity to vertical modulation
is reduced dramatically and horizontal modulation is converted directly to the
desired electrical signal. This is the most important feature of the mono
cartridge.
Bifilar wound coil
A typical mono cartridge has two output terminals (hot and ground) with a
single coil. The XV-1s mono has been designed with the four output terminals
having bifilar wound coils. The bifilar wound coil means that dual separate
monaural coils are connected respectively to the left and right channel
terminals. As such, a typical stereo phono head amplifier/stereo phono
preamplifier can be used as is without issues of hum, noise or ground loops.
Innovative magnetic circuit design
The magnetic circuit design of the XV-1s mono follows directly from the
innovative XV-1s stereo cartridge. Ideal characteristics have been achieved
through an unparalleled magnetic circuit featuring 8 Alnico magnet rods. The
XV-1s mono also utilizes DV's flux damper (patent) that reduces magnetic
distortion. This innovative circuit provides a presentation that is clear,
natural and musically expressive like no other cartridge before.
Stylus tip and cantilever
The cantilever assembly for the XV-1s mono is of solid boron with a line
contact stylus profile, similar to that of the XV-1s stereo cartridge. A line
contact stylus profile is unusual for a mono cartridge, but the depth of grooves
remain constant on mono records and the shape of the groove on mono records is
at the same average level found on stereo records. Properly implemented, a
modern line contact stylus can be used with mono records with great success. As
well, the XV-1s mono cartridge will not damage a stereo record due to it's
moderate vertical compliance. |
