Marantz 5220 User Manual download pdf (Page 17)

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Pioneer's new Spec

1 and

Spec

2 are

capable

of producing

a level

of high -quality

sound

most

speakers

are simply

incapable of

reproducing.

So, unless

you're

willing

listen to Spec

1 and Spec

something

less than

their

full

potential,

don't

make the

decision

to invest in

them

if you're not

pre-

pared

invest

in a

new

pair

of speakers.

SPEC 2: 250

GOVERNMENT

APPROVED

WATTS

A CHANNEL

Spec

2 was

the

first

power

amplifier

designed

deal

with

the

new

F.T.C.

power

regulations.

has

a continuous

power

output

250

watts

per

channel

minimum

RMS.

8 ohms. From

to 20,000

Hz.

With

more than

0.1 %

harmonic

distortion.

Other power

amplifiers that

used

to claim

a lot

power

can t

that

anymore.

WHO

NEEDS

ALL

THIS POWER

AND

WHY

When

you

listen to a

live

performance

can

have an

average sound

level of 84

dB.Which

most

high fidelity systems can

reproduce with half a

watt of

power. But a

sudden

musical peak

110 dB takes

four hundred

times as

much

power.

Which

means

you

need 200 watts of

power

to reproduce that peak.

If your amplifier doesn't have that

much reserve power,

you

get

"clipping:' Which doesn't happen

during

live

performance.

So, if you want your system

to be able to give you

all the

power, all the sheer

presence of

live

performance, you

need an

MARCH 1976

amplifier

with all the

reserve

power

of the

Spec

STATE

-OF-THE -ART DESIGN

Spec

not

only

produces

uncompromising

amount of sound;

it does

so in a totally

uncompromising

manner.

For example,

Spec 2 uses

advanced

toroidal coil

power

transformer.

It's

more expensive

transformer

than

most amplifiers

use.

But a

more efficient

transformer.

And one

that

keeps magnetic

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flux leakage

to an

absolute

minimum.

Also

unlike

many power

amplifiers,

Spec

doesn't use

fans.

Because

fans can

cause

noise. Instead,

Spec

2 has massive

heat sinks

and

special

Pioneer

developed

protective

circuitry

keep the

operating

temperature

under

control.

Spec

even

has

wattage

meters

that

indicate

music

output

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OU.S.

PIONEER ELECTRONICS

CORP., 1976.

compensate

for any

deficiencies

program

material

listening

area.

And, so you

can

make sure

you've

made all

the right

adjustments,

Spec

has

a "tone

off' switch

that

lets you compare

your setting

with a completely

flat setting.

Spec

even

has

its own

microphone

amplifier,

with

its own

volume control.

So you

can

mix

into any

program

material

without

touching

the

main

volume

control.

THE

BEAUTIFUL

SOUND

NOTHING

One thing

Spec 1 doesn't

is add anything

to the

sound

reproduces.

The

phono

section

has a completely

inaudible signal

to -noise

ratio

of 70

dB (IHF, short-

circuited

A network).

All other

inputs are

rated at

dB. Which

is even

more inaudible.

And it

has

a total harmonic

distortion of

more than

0.03 %.

Which is five

times

under

what your ear

capable

detecting.

DESIGNED FOR

EIA MOUNTING

Both Spec

1 and

Spec 2 are

19 "wide. So

you can

place them

any standard

EIA laboratory

rack.

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in RMS watts at

8 ohms.

These

had to

be specially

designed,

too.

Because

conventional

meters

couldn't

give

an accurate

enough

power

reading.

SPEC

TWICE

THE

CONTROL

MOST

PREAMPLIFIERS

Most preamplifiers

have

two

tone

controls.

Some

have

three.

But Spec

1 has

four. Each

which

is calibrated

in 1.5

clickstops.

All together,

they give

you a total

of 5,929

ways to

CIRCLE

NO. 56 ON FREE

INFORMATION CARO

you can stack

them like

conventional

home entertainment

components.

Which they definitely are

not.

SPEC

Q PIONEER®

l.s. Pioneer

Electronics Corp.,

75 Oxford Drive,

Moonachie, New

Jersey 07074

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Marantz 5220 User Manual Page 17

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