Shure SE1 Schematic

I

222

WARTREY

AVENUE. EVAMSTON,

ILLINOIS

I

AREA

CODE

312

1

328-9000

1

CABLE:

SWUREMICRO

General:

signed for use with magnetic reproducers in professional application
of recording, film studios, television and broadcast stations.
high gain, low noise level preamplifier designed to operate into a

600

producers. The power output capabilities are such that when operat-

ing at a

for instantaneous peaks. (The harmonic distortion at

less than

dbm.

The SEI two channel transcription preamplifier

ohm buss at

+4

-1-4

dbm level, there

1%

at

+I8

or

+8

DBM and equalized for magnetic re-

is

more than a

dbm). Clipping starts at approximately

12

db

is

de-

It

is

power reserve

1000

cps

+20

SPECIFICATIONS

.0012

Gain:
Frequency Response:

specified characteristic, ie, RIAA, or Flat.

Trimmer controls are provided for both low and high frequency

adjustment. These controls are located at about the center of the

chassis.

Separate
the RlAA response characteristic. These controls are located im­mediately behind the front panel.

A rumble filter switch
front panel as "LF Filter on".

lo

pass)

OUfPUt:

pending on customer requirement. (A change to either impedance

be

can
tions). The preamplifier normally
level of
tions.

Distortion:

under

Hum

with the gain adjusted for an input level of

M-21

volt input produces a minimum output of

+I

db

from

30

to

H.

F.

trimmers are also provided for adjustment of

(45

CPS

Hi

Pass)

is

A

is

designated on the front panel as

The output

accomplished by re-wiring the transformer output connec-

$4

dbm which

1%

at

+I5

&

Noise:The

is

The harmonic distortion from

dbm.

noise level

high frequency filter switch

furnished at

is

most common in professional applica-

600

is

designed to operate at a buss

is

64

designated on the

"HF

ohms or

50

db

below

4.5

cartridge, 5 cm/sec at

1000

cps).

+4

dbm.

15,000

CPS

within

(7

filter on".

150

to

10,000

+4

dbm output

millivolts. (Shure

KC

ohms de-

cps

a

is

Input Impedance:
Balance Adjustment:

and Right Balance) are provided on

Channel Separation:

RlAA

position.

Tubes:

4-ECC83 (7025):

Mechanical:

length and

inches clearance behind the front panel. The power supply can

conveniently located within the limitation of a

requires minimum mounting dimensions
inches high by
the power supply plug with a cable

mounting through a standard

is

Guarantee:

anteed to be free from electrical and mechanical defects for

period of one year on components and

from date of shipment from

are complied with fully. In case of damage,

carefully repack the unit and return

guarantee

reasonably rough handling or abuse.

3%

inches in height and must have a minimum of

I

I

The

is

voided

47,000

ohms.

TWO

level adjustment controls (Left

the

front panel.

Better than

I-12AY7;

The Equalizer requires an opening of 7 inches in

inches long. The "ON-OFF'' switch

'/2

inch panel mounting hole.

SE-1

Stereo Transcription Preamplifier

the

37

db

I-12X4

of

3'/2

31/2

feet long and

90

days on vacuum tubes

factory, provided all instructions

it

it

to the factory for repair. Our

if

the basic unit has been subjected to un.

at

10,000

CPS

Rectifier.

21/2

foot cable and

inches wide and

is

attached to

is

suitable for

is

is

essential that

in

I1

be

6

guar-

a

you

(OVER)

Printed

in

U.S.A.

I

A

h

1

all