Sansui Z-5000 Manual do Utilizador descarregar pdf (Página 3)

The

power

amplifiers

Input: a semiconductor

cfucuit built

uound a differential amplifier using

ts'o well-matched transistors and a buf

fer

amplifier delivers a completely corr

stant

quality

response.

Output : 3 Ddington-connected

ampldier stages for high

cwent gain in

each channei, with eight large

pou,er

transistors for each channel

(8A3000:

6

power

transistors

"three-in-parallel")

in

an elaborate

"fou-in-parallel"

OCL

complementary symmetry

pushpull

con-

figuation,

give

linear input

amplifica-

tion and

reserve power for

negligible

distortion.

Power

transfomer: toroidal coil

windi ngs

on a seamless ring and a I win

positive/negative

dual

power

supply

fomat

with separate windings

for

left

and right channels result in a

power

transformer which

gives

an improved

transient

response with low

heat

gener-

ation and

precise power

regulation

(BA3000.

5000 and CA3000).

r&&T{!Rt{

8,$[&*

It.A.s(XX)

Stereo/Mono Power

Amplifier- I)eliv-

ers a

per

channel

power

output of 300 u-atts,

min. RMS,

both chamels

driven into I ohms

over

a20

to

20.000H2

bandwidth

with no

more than 0,1 7. total hmonic distortion.

High-efficiency

output

translomer

allos's

the IlA5000 to deliverfull rated output at

Luds of 8.

,1

or 2 ohms

for

2-channel ultra-

sLable

operation;

afull 600watts in mono.

. The output hansfonner also

functions

as a bandpass

filter

cutting subsonic signals

to

protect

speaker

cones.

. Temperatue-sensored cooling

fan.

. Three

protection

circuits:

AS0

(area

ol sale

operation) detection cfucuit

monitors

and

limits

cwent

flow in

power

transfor-

men

;

themistor self-restoring

temperatue

detection ctcuit;

overload detection cilcuit

with

quick-acting

f uses.

. High-accuacy meters, with logdith-

mically compressed scale covering0,ol to

300 watts and decibel

scale;

precise,

positive

controls

plus

block diagram of instrument

interior

printed

on cover.

BA 3{X}0

All the desigr

featues

of the

BA5000,

but with a

porver

output of

1?0 watts

per

channel,

min. RMS, both chamels driven

into 8 ohms over

a20 to 20.000H2 band-

width, $ith

no more

than

0,05

7a

total hr-

monic distortion; 340

watts, min. RMS in

mono.

. Fou

jumbo

heat sinl(. coupled

di-

rectly to the

power

transistoN

eliminate the

need

for

a coolingfan.

. LED Pou.er/hotector indiotor on

front

panel glows

red when

power

is

sB irched on, luns

green

to indicate sale

oper{tion; tuns red to wm of

potentially

hdmlul conditions.

r

BA3000 has all the safety featues,

subsonic filters and distortion-Jree toroidal

coil winding

power

transfomer described

above.

BA 5000

tiA:rffx)

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