Quad 240-S Brochure

.

I

U rack

(4O)

and

mount

50W

.

size

XLR-3 inputs

(8O) per

channel

KEY FEATURES

and

NL4

outputs

.'Active

current

transformer

dumping

.

.

Remote

inputs .

control

option

Reliable

design

.

BOW

with

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QUAD

power

Quad
value.

rated in
the

requirements

sound
hi-fidelity
of the

amplifiers

More

than 50 years

each

amplifier

reinforcement

enthusiast

world.

PERFORMANCE

The performance
patented
uses
formance
quality
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matching

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rmplifier
r second

forward

amplifier

ale no

inherently

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time to

invention

error

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adjustments,

of

output devices.

simplicity

by

careful design

The amplifier

automatic

is

run for

QUAD

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rack
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ime

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mounting

setting

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a simple

delay

240

and

Very

in operation

The balanced

(500mV)

a bridging

240 has

remote

space

has been provided

circuitry

equalisation

POWERAMPLTFTERS

olTer high

and

of

broadcasters, recortling

and other professional

and music

performanceo

accumulated

amplifiers

Quad

listeners in

AND RELIABI

of

called

correction in

and

more

from the selection

at least 24 hours

a full test procedure.

amplfiers

Quad

'ocurrent dumping".

a design

solely

by the performance

a bridge

and elegance

reliable.

sub-assemblies

test procedure.

of four passive

nothing

Quad

and rigorous

to go

of the
reliability

of components

Finally

before

240 AMPLIFIER

is a two

channel

can deliver more

low

distortion

by the

input

antl can be

link on the

been designed

level

control module.

potentiometer

which

could be used for

or a clirect

power amplifier

than

at

use of

the current

sensitivity

changed to *8dBu (2V)

amplifier

to allow the

or

by an

to

allow the ready

digital input.

reliability

experience is

continue to

studios,

users in addition

almost every

LITY

is

ensured by a

The principle

where

the overall per.-

of a very high

components.

out of alignment

design makes

is legendary.

control

of every

through

are subjected

being subjected

to a com-

each professional

SERIES

intended

BOW into

any power level

is set

card.

simple fitting

Control

external voltage.

a crossover

a 4O load

dumping
at the factory

is effected

provision

network,

and

incorpo-

satisfy

theatres,

country

Quad

and no

cir-

stage

for

for

cir-

simply

ofan

by
In

of

Inputs

are via XLR-3
Speakon NL4
with the

mating

of a professionally

to

connector
nection

methods.

Each amplifier
windings
sensor

which
heat for
deal with

with loudspeakers
lent transient

The

It

a special

electronically

to

former
former
bandwidth,
performance.

The
such as video
monitoring.

is

with
mobile
are prime

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and can
change).
except that
unauthorised
sider makingvariants

option is

any reason.

Quad

transformer

inputs.
without

Quad

access for rear

facilities

standard

be set for
The

the remote level

CONNECTORS

sockets

loudspeaker

NL4

solves

many

connectors.

connectors

designed

of the

POWER

channel

module

on a conmon

interrupts

the most

handling

INPUT

240 is fitted

for the

truly

It

yields

many

resistive

transformer

the

The

porver

awkward

and this

ofdynamic
contributes

capability.

ARRANGEMENTS

with

an

in

an active

undesirable

the advantages

of the

disadvantages

input

APPLICAÏONS

240

is ideally

edit rooms,

It

is ruggedly

considerations.

where

suited to

dubbing
constructed

support

reliability,

240 VARIANTS

240 is

Quad

2405 is

it is

alteration

not fitted

supplied

120/fl0v

a slave

with

of gain.

to suit

control

particular

and

the outputs

The

amplifier

to aid

easy installation.

arnplifier

age

and loudspeaker

old problems

SUPPLIES

is separately

and

is fitted

supply

if the

channel should

supply

capacity is

loads

to the

active

balance

circuit designed

effects

of a conventional

and provides

impedance

driving loudspeakers

suites and./general

and

since it is provided

it

is

eminently

high performance

AND

OPTIONS

wired

for 240/220v

ac

operation

version

and is

level

controls

will

Quad

module,

be pleased

requirements.

are via Neutrik

is

of previous

supplied

with a

designed

usually

associated

amplifier,s

input

which

to

compensate

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and a high

suitable

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simple

and

this prevenrs

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and weight

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supplied

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use

output

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from twin

thermal

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group delay
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dynamic range
input sensitivity

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interface connector

input impedence

common mode reiection
common

input

outPut connector

outPut
output voltage
channel separation
load stability
power
working mainsvoltage

indicators
Protection

thermal
peak
dc offset
dc supply fuse
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weight
dimensions

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range

mode range

connector

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offset

requirements

current

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50w

|

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any load
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250/220Yac

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85"C

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T4A

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45"C

4O load, per.
8O load, per

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3dB ref I

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at
up to 20kHz ref
THD

THD+N, I kHzany
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A
for full ourput

(*8dBu) equivalent
(-4dBu)

plug-in
or | 0kfl

mounted
balanced,

20Hzto lOkHz
50Hz

chassis socket
pin I

wired to

=

| *
ar ll<Hz nominal, in
lyPrcal

I kHz, inputs
unconditional
with
note

internal
indicates

internal
peak
power
internal
240Vac mains fuse

| 20Vac mains
high

without packing
width ( l9 inch rack),

channel, 240Vac
channel,240Vac

l%THD+N, Tamb

kHz 50W 8O

ref lkHz

amplifier output is

I kHz

+ N,

40Hz any level up
20kHz any level

full signal

34dB gain

module

potentiometer

on rear

nominal,

=

chassis,pin 2 = hot,

the

signal, |

both channels delivering

lower

that

transformer

dc supplies for

heatsink temperature

output

supply 0V centering

dc power supply fuse

ambient

level up to

output,

to

panel

resistive

wired

low

output impedance

=

-

return, 2+
series

terminated

supplies will reduce

current limit internal protection

fuse

temperatures require full ventilation

supply
supply

20"C

non-inverting

to 50W 8O

50W

up to 50W 8O

( |

5.7kHz bandwidth)

ppm

6. 22dB

IEC

to

pin

3 = cold

and2- noc connected

with

l.5/JH

BOW

tapping change

each channel

circuit

(lU),

height

depth

8O

gain

convention

inro

4O

output power

*Group
pâssing

measure

delay is a measure

through the amplifier.

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components

of the

delay

experienced

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transit delay

Group

delay error is a

by the frequency

passing

signals

of

through the

Fower (W)

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90

amplifier.

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