Crown Studio Reference I Service Manual download pdf (Page 13)

Dynamic

Ranga/Lsuel

Meter:

Each

Channel

has

a

five-

segment

meter that

displays

either

the

dynamic

range

of

the

output

sigrrai

in

dB

sr

the

output

love!

in

dB,

(From

the

factory, the

amplifier

is

set

to

display

dy-

namic

range.)

As

dynamic

range

meters,

they

show

%he

ratio

sf

peak

to

average

power

of

tach

channel,

As

output

level

meters

they

show

how

high

the

~~~lput

levels

are

relative to

standard

1

kHz

powerq

2.5

llnputlOutput

input

Csnneetor:

Two

balanced

'!,is-inch

jacks

an

the

back

panel

and

two

balanced

three-pin

XLR

connec-

tors

on

the factory-installed

P..B,?-FX,

lnput

impsdanee:

Nominally

10

K

ohms,

balanced

Pdornina!ly

5

K

ohms,

unbaianced.

I~put

San%itiuiQ:

Settings

include

0,775

volts

sr

1

A

volts

for

standard

1

kHz

pswea: or

26

dB

voleage

gain.

Output

Canaeetam:

Two

sets

of

color-coded

5-way

bind-

ing

posts

far

each

cha~3rrel

(for

connecting

barlana

plugs,

spads

lugs

si

bare

wire),

Qutput

Impsdaase::

Less

than

10

miBliahms

in

sarisa

with

2,s

micr~henries,

DC

Output

8@ssZ;

(Shorted

input)

32

millivslts.

2.6

Output

Signal

Starsa:

Unbalanced,

twa-channel.

Brldgs-Mona:

Balanced,

singla-channel.

Channel

f

controis

are active;

channel

2

should

be

turned

down.

Parallai-Mono:

Unbalanced,

single-channel.

Channel

"icontmls

are

active;

channel

2

is

bypassed.

2,7

Protection

ODEP:

ff

unreasonable

operating

conditions

$~~g;;ur

which

could

stress

the

output circuitry?

the

QDEPcir-

Input:

Input

overload

prstectisn

is

furnished

at

the

amplifier

input

to

limit

current.

Turn

On:

The

four

second

~C~TM-Q~

deilay

prevents

dam

gerous

turn-on

transier~ts,

2,8

Constrvctlon

Steel

chassis

with

durable

b8ack

finish,

aluminum

front

panel

with

super-glass

Imron

finish,

lexa~,

averiay?

and

a

specially

designed

flaw-through

ventilation

system

from

front

to

side

panels.

CoeiJng:

Convection

cooling

with

assistance

from

the

computerized, on-demand

proportional

cooling

fan.

Dimen$ions:

Standard

19

inch

(48.3

em)

rack

mount

width

fElA

RS-316-B),

9

inch

(17.8

cm)

height,

16

inch

(40'6

CM)

depth

behind

mounting

surface

and

2.75

inch

(7

em)

prstrusion

in

front

sf

mounting

surface

(sea

Fig.

2.1

belaw),

Apprsxlmata

WaiigM:

Center

of

gravity

is

about

6

inches

(15.2

cm)

behind

the

front

mounting

surface.

cuit

limits

the

output

current

level

until

safe

operating

conditions

exist.

60

pounds,

11

ounces

unds,

3

ounces

(332

kg)

shipping

weight.

Trensformer:

Transformer

overheating

will

result

in

a

1

temporary

shut-down

due

ta

a

ttmerrnal

~wifch

in

the

transformer primary-

RF

Burnout:

Controlled

slew-rate

voltage

amplifiers

pro-

tect

the

unit

agairlst

RF

burnouts,

56

pounds,

2

ounces

(25.5

kg)

net;

69

pounds,

"1

0ouncss

(31

"6

kg)

shipping

weight.

Specifications

2-3

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 96 97

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