Shure 1947 catalogue phonograph

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3" ll RE lever-Type Cartridges

LOW- MASS
IIEE OLE

PIEZOELECTRIC CW
cavsm

SHOCK ABSORBER STEEL OR

CORRECTION

11/

am sum by"
uocx Pill-TIP
Hummus

TORQUE
LEVER CRYSTAL
INSTALLED

ll LEVER

TORQUE
LEVER RATIO

General Features: The Shure Lever-Type Cartridges
listed here are for replacement of crystal cartridges in current use.
They are widely used byleading mc'mufacturers of radios and phono-
graphs in original equipment. They offer extremely low needle-
point stiffness with high output voltages. They are available in both
steel and aluminum cases and are all furnished with quick, easy-to-use
pin tips that eliminate the need of soldering.

How The lever-Type Cartridge is
COHS'I'I'UC'R'ed: The lever-type cartridge is a patented

Shure development. As shown in the illustration, the crystal is mounted

Basic Considerations
For Selecting The
Proper Replacement
Cartridge:

I. Be certain that the mounting
dimensions are the same.
Most flat-type cartridges
have standard mounting and
are interchangeable.

. Be sure that the output volt-
age oi the replacement
cartridge is equal to or
slightly greater than the out-
put voltage of the cartridge
being replaced.

. Be sure that the minimum
needle force required is the
same or lower in the car-
tridge replacing the original
one.

in an aluminum lever. The torque transmit-
ted from the needle chuck to the crystal
by means of the lever is built up approxi-
mately 5 times. This has permitted de-
creasing the needle-point stiffness without
loss of output voltage. The lever also pro-
tects the crystal from sudden shock and
strain providing a more rugged car-
tridge for phonograph use. It produces
the highest relative output for given
needle-point compliance. This provides
a distinct advantage for replacing car-
tridges of other types.

Shure Lever-Type Cartridges will re-
place most Rochelle Salt standard flat-
type cartridges. In addition, they offer
the advantages of lower needle-point
stiffness and higher output voltage.
Where its use is possible, the alumi-
num case cartridge-W57A-also of-
fers the additional advantage of a re-
duction in needle force. lts weight is
only .43 ounce, making it much lighter
than the heavier die-cast cartridges
weighing from T to IV: ounces. Installing an aluminum cartridge
in a heavy tone arm or record changer arm can reduce the needle force
of an existing record changer or phonograph by /2 to 1 ounce.
In many cases this converts the heavy-weight pickup into a light-
weight pickup and permits the use of permanent-point needles.

When installing aluminum pickup cartridges, be sure that the
needle force is not reduced too greatly, as might occur if replacing
a heavy cartridge in a counter-balanced arm. If the needle force is
reduced to less than one ounce, some record changers might not
trip properly. In such cases, the standard steel case-W58A, etc.,
are recommended.

/\
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GDAPH

Suva: Itvsn-th
CARTRIDGE

cnvsrn MONO

MIDI
PIN
JACK

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PHI
8 .25

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MIN. LIST
MODEL CASE REPLACES SHURE on REPLACES NEEDLE FORCE VOLTAGE SHPG. WT. c005 PRICE
W57A Almn. P87, P93, P878 3/4 oz. 1.6 3/4 oz. RUGLA s 4.45
Any Standard
*woOA Almn. P30 any I oz. 1.8 3/4 oz. RUSIS 7.50
was». Steel 99-182, P905, P928, W42A Cartridge 3/. oz. 1.6 1 oz. RUGLU 4.45
W59A Steel 99-181,99-180, W4OA, W4lA of 1 oz. 2.5 1 oz. RUGAT 4.45
W56A Almn. P89 Eq"°' 0 I Va oz. 4.3 3/4 oz. RUGUS 5.45
**W56PN Almn. mas, PN89 1 M; oz. 11.9 3/4 oz. RUTAR 10.00
ISee below
**W60PN Almn. PN30 3/. oz. 10.7 3/4 oz. RUTAP 13.00 _

SPECIAL PN TYPE CARTRIDGE
*With Sapphire Point Needle

IAny Standard Flat-Type PN Cartridge of Equal Output.
15.0 megohm load resistance TOO m.m.f.d. cable capacity

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