Shure v 15 vxmr owners manual

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fie V15VxMR

(See illustrations on inside back cover.)

The Micro-Ridge diamond tip and the
beryllium stylus cantilever of the VISVXMR
combine to achieve the highest trackability
and most detailed and accurate playback
possible, allowing the listener to hear musical
sounds that were previously hidden in the
record grooves. The use of these and other
design features of the V15VxMR result in the
most accurate tracingof aphonograph record
groove yet obtained.

r171:2 V15VxMR offers all these outstandingfea-

hues and benefits:

' The highest known trackabiljty at 1 gram for
extended record and tip life

' Beryllium MICROWALL/BeTM stylus cantile-
ver affords superior trackability for accurate
sound reproduction

' MKSARTM-polished Micro-Ridge stylus tip
minimizes distortion and record wear

' Ultra-flat frequency response, higher output,
and superior signal-to-noise level from high-
efficiency magnetic structure

' Dynamic Stabilizer/Destaficizer overcomes
record warp, dust, and surface static electric-
ity

' Exclusive SIDE-GUARD stylus protection
system guards against accidental stylus dam-
age

Tuckability" is the stylus ability to stay in

contact with the record groove walls at a given

tracking force. The most demanding signals

on a record are usually high-level,

high-frequency sounds and sharp transients.

Mistracking of any signal can cause record

groove damage that permanently reduces

future reproduction accuracy.

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Trackability can be improved by increasing
stylus tracking force at the expense of record
and stylus tip wear. The V15 achieves high
trackability without making these sacrifices.
The V15VxMRs Micro-Ridge stylus tip and
low effective-mass MICROWALL/Be stylus
structure almost double previously achieved
high frequency trackability at 10 kHz - at an
optimum stylus force of only one gram!

fieryllium MICROWALL/Be Stylus Cantilever
for Lowest Effective Muss Ever!

Beryllium has extremely low mass and high
stiffness. These properties result in superior
performance, however, only when the
material is geometrically optimized. The
ultra-thin (0.0005-inch) beryllium
MICROWALL/Be tube, shown in Figure 1c, has
the lowest effective mass and highest ratio of
stiffness to mass of any stylus cantilever ever,
resulting in unprecedented high-frequency
trackability

Below is the Stiffness to Mass ratio for the
three different types of beryllium cantilevers
shown in Figure 1 (inside back cover).

a h e
SOLID ROD 2 mil WALL 0.5 mil MICRQWALL
10 mil dia. 12 mil dla. 18 mil dia.
Stiffness/Mass Stiffness/Mass Stiflness/Mass
Ratio: 1 Ratio: 2 Ratio: 6.25

The physical characteristics of beryllium
allow a longer length low-mass stylus
structure. The resultant longer cantilever
achieves the proper vertical tracking angle
for a better match to the recorded signal and
lower distortion.
MZSARTWPalishedMicro-Ridge (MR) stylus ti
The MR Micro-Ridge stylus tip has a very sma l
tracing radius, as shown in Figure 2, that
reduces distortion and minimizes record
surface indentation for long record life.

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The very low mass of the nude, gem-stone
quality diamond tip of the V15VXMR helps
minimize the total effective stylus mass.

The areas of the diamond actually in contact
with the record are MKSAR-polished, an
ultra-smooth polishing technique for
reducing surface noise and record wear.

Ultra-flat frequency response

The MICROWALL/Be cantilever raises the
stylus mechanical resonance frequency to 33
kHz, well beyond the audible range, ensuring
the flat response shown in Figure 3, as well as
superior high-frequency channel separation.
The V15VXMR features high output levels
with fewer turns of wire on its coils, which
results in a lower impedance at the output
terminals, making the frequency response of
the cartridge less sensitive to capacitive and
resistive loading.

Hic D mimic Stubilizer/Destaticizer

Shure s exclusive Dynamic Stabilizer acts like
a miniature shock absorber, maintaining a
constant cartridge-to-record distance, as
shown in Figure 4, to ensure uniform tracking
force. This minimizes such warp-related
problems as groove skipping, cartridge
bottoming, signal wow, and even amplifier
and/or speaker overload.

The viscous-damped Dynamic Stabilizer
attenuates the arm-cartridge system
resonance effect that causes large increases in
sub-audio frequency output and possible
mistracking.

When in the operating or guard positions
(see Figure V in the Installation Manual), the
Dynamic Stabilizer protects the stylus and
record from damage if the tone arm is
accidentally dropped onto the record.

As shown in Figure 5, there are over 10,000
tiny, electrically conductive fibers in the

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Dynamic Stabilizer brush. These tiny fibers
discharge surface static electricity and,
though not meant to be the primary record
cleaning mechanism, do sweep away
microscopic dust particles.

SIDE-GUARD Stylus Protection System

The SIDE-GUARD stylus protection system,
shown in Figure 6, helps prevent stylus
damage if the cartridge accidentally slides
across a record.

The SIDE-GUARD stylus protection system
responds to side thrusts on the stylus by
withdrawing the entire stylus cantilever and
tip safely into the stylus housing before the
cantilever can be damaged.

Specifications
Frequency Response:
Channel Balance:
Channel Separation:

10 to 25,000 HZ
Within 1.5 dB
1 kHz - 25 dB or greater
10 kHz -1 8 dB or greater
Trackability at 1 gram (10 mN ) Tracking Force (typ-
ical values shown in cm/sec peak velocity);
400 Hz: 30 cm/sec 5 kHz: 80 cm/sec
1 kHz: 46 cm/sec 10 kHz: 60 cm/sec
Tracking Force:
Total Tone Arm Force

Force at the staffing with Dynamic

stylus tip Stabilizer operating
Optimum 1.09 (10 mN) 1.5g (15 mN)

Maximum 1.25 g (12.5 mN) 1.75 g (17.5 mN)
Output Voltage (typical): 3 mV RMS at 1 kHz at 5 cm/
sec peak velocny
Recommended Load: 47 k9 ohms in parallel with
250 pF

Resistance (typical): 1000 $2 dc
Inductance (typical): 425 mH at 1 kHz
Cartridge Weight: 6.6 grams

Replacement Stylus: VNSXMR, nude Micro-Ridge tip
3.8 X 75 p. (.00015 X .003 in), burgundy-colored grip
Certification: Conforms to European Union direc-
tives, eligible to bear CE marking; meets European
Union EMC Immunity Requirements: EN 50 082-1,
1992 [ESD (lEC 801-2)]

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