Shure SA1 Schematic

222 HARTREY AVE., EVANSTON. l

MICROPHONES

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AREA

CODE

AND

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ELECTRONIC

L.

60204 U.S.A.

COMPONENTS

SHUREMICRO

The Shure Solo-Phone Stereo Amplifiers are de-

signed specifically for high fidelity listening with head-

phones. They provide sufficient amplification and
equalization to use any fine quality magnetic phono
cartridge (such as the Shure Stereo Dynetic). Addi­tional inputs are available to plug in a multiplex FM
tuner or a tape playback unit. Figure A shows a typical
arrangement using a turntable with a magnetic cart-

ridge and a tuner or a tape recorder.

Although primarily designed for private high fidelity

listening to records, FM, and tape, the Solo-Phones
can be used for other applications.

RECORD PLAYER

SHURE SOLO-PHONE

d-4

HEADPHONES

TYPICAL

Headphone isolation amplifier (monitoring while
tape recording, etc.)

Transcribing disc recordings using tape re­corder.
Ceramic microphone amplifier (connect to rnag­netic cartridge input).

=

Special installations for the hard-of-hearing.
Ideal for practicing-in private by players and

students of electronic organs.
Enables music students and tape recording

enthusiasts to monitor tape recordings.
The Model SA-1 is listed by Underwriters' La-

boratories, Inc. and listed by the Canadian
Standards Association as certified.

INSTALLATION AND OPERATION

WARNING:

A convenient switch on the front panel permits se-

lection of program sources. Two stereo headphone

jacks are provided on the front panel, permitting two

sets of stereo headphones to be used at the same time.

An On-Off switch and pilot light are provided on

the front panel. The Model SA-I has a convenient

SOLO-PHONE

INSTALLATION

FIGURE A

To prevent fire or shock hazard, do not
expose this appliance to rain or moisture.

DATA
SHEET

STEREO

MODELS SA-1 AND

SA-2E SOLO-PHONE@

HEADPHONE AMPLIFIERS

switched 120 volt ac outlet on the back panel for
connecting the power cord of a record changer, tuner,

3

or tape player. This outlet can supply up to

amperes.

1. For Phono operation connect the signal leads
from the phono cartridge to the jacks on the back

panel marked "Magnetic Phono Input."

For Tuner or Tape operation, connect the signal
leads from the tuner or tape player to the jacks on
the back panel marked "Tape or Tuner Input."

Attention must be given to the information in the
phono, tape, or tuner equipment data sheets re­garding their connections for "Right" or "Left"
channel, phasing, and grounding. Ground leads
from the metal parts of the phono, tape, or tuner

equipment, and an external ground may be con­nected to the screw below the magnetic phono
input terminals.

2. Plug the headphones into the jack on the front
panel. Set the selector switch to the desired func­tion. (Tape or Tuner, or Phono).

The volume control is a two-part control allowing
separate adjustment of each stereo channel to
achieve proper balance between channels. After
each channel has been adjusted, simple over-all
volume adjustments can be made by turning either

part of the dual control.

3.

Connect the Solo-Phone power line cord to the

proper ac power outlet. (See Operating Voltage
under Specifications.) Model

SA-I Solo-Phone
comes with an attached standard two-conductor
ac plug.

The Model SA-2E is supplied with a

three-conduc­tor power line cord, but no plug. The power line
cord plug should be installed by qualified service

personnel. The brown lead should be connected

to the "live" or "hot" terminal of the plug and the

blue lead to the neutral terminal of the plug. The
greenlyellow lead is the grounding conductor and
should be connected to the ground or earth termi-

nal of the plug.

In the Model SA-2E either operating voltage is

selected by a switch on the back panel. A switch

lock plate is provided to prevent accidental switch­ing to the 120 VAC position. This Solo-Phone is
shipped with operating voltage selector switch
locked in the 210-240 VAC position. The lock plate
can be moved from the locking position by loosen­ing (do not remove) the screw holding the lock

plate, rotating the lock plate

90°, and retightening

the screw.

CAUTION:

Do not connect power line cord of Model
SA-2E into 210-240 volts when switched
to 120 volts.

ACCESSORY CONNECTING PLUGS

Model PK-1, a package of six connecting plugs, is
available. This package contains two phone plugs for
connecting headsets and four phono plugs for con­necting cables from turntables and tuners to the

Solo-

Phone.

Copyright

27A838

(MI)

1965,

Shure

Brothers

Inc

(OVER)

Printed

in

U.S.A.

SPECIFICATIONS

Gain and Frequency Response:

Tape

Frequency

--

.-

-

100

1,000

70,000

*Standard

Hz

Hz

Hz

RlAA

Phono Function*

--

i

13

Ref:

34 dB 3 dB

6

mV

300

-14

Ref:

dB

1.000

input

rnV

dB'

1,000

-

1-3,

Hz

produces

output

-t

2

Hz

Equalization

-2
level

dB

level

dB

or Tuner Function

-

-1-3,

-2

Ref:

1,000

7

dB

-t

rnV

3

input

150

duces 340

-t2

dB

Ref:

1,000

dB

Hz

dB

mV

Hz

Input Impedance:

Phono-47 kilohms
Tuner-250 kilohms

Range of Load:

The unit shall operate satisfactorily using any ear-

phones with impedances of 4 to 200 ohms. For

optimum results, use earphones of 4- to 16-ohm im-

pedance.

Channel Separation:

40 dB minimum from 50 to 20,000

Hz

Total Harmonic Distortion:

Less than
to 8-ohm resistive load at 100

1

%

driving both channels simultaneously

mV level.

Clipping Level:

400

mV at 1,000

Hz

and 8-ohm load.

Operating Voltage:

Model SA-1 108-1 32 volts 50160
Model SA-2E

108-1 32 volts

50160

or

21 0-240

volts 50160

See Paragraph on Installation and Operation.

level

pro-

output

level

Hz
Hz

HZ

Case Finish:

Satin Walnut.

260

MM

(10-$14

IN.)

OVERALL

DIMENSIONS

FIGURE

I

B

GUARANTEE

This Shure product is guaranteed in normal use to

be free from electrical and mechanical defects for
period of one year from the date of purchase. Please
retain proof of purchase date. This guarantee includes

all parts and labor.

SHIPPING INSTRUCTIONS

Carefully repack the unit and return it prepaid to the
factory. If outside the United States, return the unit
to your dealer or Authorized Shure Service Center
for repair. The unit will be returned to you prepaid.

a

GROUNDED

CHASSIS
AT INPUT/

108-132 V

50/60

PHONO

43

TAPE

OR

TUNER 330

43-

CIRCUIT

TO

0

I

JACK

1

I

I

I

I I

MODELS SA-I,SA-IF,SA-2E 8 SA-2FE UTILIZE THE SAME AMPLIFIER CIRCUIT WITH DIFFERENT

HZ

SA-I

8

SA-IF

xSA-F PROVIDED WITH 3 CONDUCTOR LINE CORD

pF 10%

10%

w

S-0-EL0

+

18K

SI

RIGHT CHANNEL OUTPUT

(SAME AS LEFT CHANNEL)

81

PLUG

IL

I8M

-

330 K

500

pF

3 A MAX

1/2A

POWER SUPPLY

1/8A STANDARD

POWER

"C"

6.8 K

470

+

.uud

-.-

..

+

-

-

i.

~'RNIYEL

SA-2E 8 SA-2FE

2

POWER

SUPPLY

,005

_it

64Ox16V 64Ox16V 64Ox16V

J?

h

f

I

I

17~~a~~~~

640~6.4 V

SUPPLIES.

I

NOTES:
I. ALL CAPACITORS IN

?~?,W,c2T~FP,!195nAr;',9,

.,,,,,,,

2.ALL RESISTORS 1/2 WATT 10%

,.,..

LEFT

CHANNEL

OUTPUT

RIGHT

CHANNEL

UNLESS

MFD

3RKING

'!!

,,,

vl.LL3S SHOWN

SA-1

AND

SA-2E

SOLO-PHONE

CIRCUIT

DIAGRAMS