Quad 240 Owners manual
240
TWIN CHANNEL
PROFESSIONAL
POWER AMPLIFIER
USER
MANUAL
QUA
D
CONTENTS
1.0 DESCRIPTION
page
2.0 INSTALLATION
3.0 OPERATION
lntroduction
Curr€nt
Dumping
Options
Vâriants
Unpacking
Contents
Voltage Seleclion
l\4ains
lnpul conn€ction
Mains
Earthing
Mounting/Thermal
Connectors
Requirements
Consideralions
................
IEC Input Convention
NAB Input Convention
Neutrik Speakon
IEC Output
NAB Output
Output Conneçlion
Connectors
Convention
Convention
Requiremenls
2
2
2
2
3
3
3
4
4
4
5
5
5
5
4.0 SERVICE
5.0 TECHNICAL
AND
MAINTENANCE
Protection
Fûses
Warranly
Preventative
Maintenance
Repair
Packing
Spares
Circuit
Specification
Pârts List
Circuit
Description
Diâgram
7
7
7
7
7
I
I
10
ot241EC
1.0
DESCRIPTION
Introductlon
Curlent
Dumping
The
including
channel exceeds
The
This circuit
resulted
The
withstaFd
Current dumping involves
eliminates many
covered by
is
in effec!
duty amplifior.
and it calls
The smallamplifier
deliver almost
amplifiêr will
Therefore
the small signal
powers
The
trackrng and
no internal
lypes
240 is
Quad
broadcast, recording
Quad240 uses an implementation
in
Ouad 240 series is
il
can be madê very
problems
is
less restrictive.
alwo
channelpower
80W into a 4e
topology was first
the award of
reasonable
ot the
patents
both a low
The low
ùpon the high
the tull amount
provide
the output signal
amplifier
ol crossover
transislor matching
adjuslments
a Queen's Award
conskucted in
trealment
â feed
problems
in
several
powervery
power
power
is
arranged sothat
the remalnder
quality
aqd since this
distortion,
oralignment
used
accurate indeed.
amplirierdesigned for
public
and
load
by
assocrated
counlries. In
high
amplili€r
amptifier
of required
dissappear.
address.
and 50W into
of the cu rrent
on the renowned
for Technolooical
a rugged
professronar
foMard
quality
controls
to
provided
output
accurately
is
solely dependent
an'phtior is
quiescent
ând
lhe choice
professional
power
The
an Be lodd.
dumping
euad 405 amplifjer
câstwhich
users_
error correction
with
transrstor
a current
amptitierand
provide
and complêtety.
Cùrrenl
dumping
a
the loudspeakers
most
ot the muscte.
the large
power
current the
on
the
04ly required
cufient
adiuslment,
dumptng
ol oolout
users
output of
circuittechnique.
Innovation.
is
technique
amplilie.s. lt is
amp|iier
power
high
transistors
small low
performance
to deliver low
ampli,ters require
powertransistor
eiiher
and
designed
and
there
heavy
at
alt trmes
can
power
of
thermal
to
it
Oplions
Variants
The
Ouad 240
remole
oulput Jevel
cân
operâtion
The major
for
senstivity
âpplications where
Note that
panel
Iô âddition
âpplications.
proclucts
level conlrol. This
be supplied with
allering the levêl ffom
level
amplilier is avaitable
is required from
and lhe only tool requked
variants of
jnternally
the standard âmplifier
controls.
slighlly di{ferent
Quad
1o suil
parlicular
with
is intended
a locaiion
the option factory
the Quad 240 is
thê front
is
casual
wilj
provided.
stirl
adjuslment
has
versions
pleâsed
be
applications.
one major
for
use where
remote
fitted
is
a screwonver.
the
stave modet which
panet.
Tnis model
of the
anti,tamper locking
produced
are
io consider
option, the fùting
the control
fiom
the amplifier. The
butfifiing
The
amplifie|s
at a laterstage
oplion to
lof
the
adaptalion
is i']lended
pârticular
ol the maximum
has
no
set the amolilier
gain
is io
be avoided.
screws for
countries and
of anv of its
of âô
active
âmDlifier
is asimple
provision
lor use in
the Jront
2.0INSTALLATION
Unpacking
Contenls
The
and
retained for
The
Main Unn:
Accesso es:
Shortages should be notified
Further
240 amplifier is shipped
Quad
packed
packing
in a heavy duly
in
use
the ulllikely event of a returô
conlains the following:
One
Quad
One 2m length
Pârt No.
manual.
One
[,13 Allen
One
anti-tamper
Two NL4FC
mounted
(adhesive
supplied).
supplies of accessories
cardboard carton.
OESOE2A.
on the chassis where litted.
prolective
in
240 version
of IEC socket
Part No. 01240ÊC.
(1
key
.5 mm). For
grub
screws
cable mounting
labels which indicate
10 the Distributor
can be
purchâsed
chip foam
packing
the
lor
seryicing being necessary_
âmplifier.
terminated mains
connectors to match
or the
as
proleciive packing
mâterials
the levet
Part No. PPNL4FC.
the wiring convention
Factory
required.
should
lêad
control
those
âs
appropriate.
are
be
Mains
Voltage Selection
The
The
board.
mâ*ed
setling is changed. Note
The
240V ac lor which
To
change lhe mains voltage setting
removed from
retaining rivets. The
resoldered,
The linking
240
Ouad
change
T2A
Quad 240 willlunction
Dlsconnect thê mâlng
can be set internally for
involves replacing
Note
thal the voltage ol the
panel
on the
rear
for 240V ac malns.
performance
power
the
links on the PCB
rndicated, lor
as
arrangement
and â similar
alsothâtlhe fuse rating
safely
supply PCB by
the
is
also shown
links
power
either 240l220V
on the mains
unil as shipped from
clear marking should
T4A Io|l20V
lor
mains vollages
has been
requiredvoltage
cha.acterised.
supply betore making ahy
protectivo
the
prising
(which
in
the cjrcuit diâgram
o|120/1
power
should also
ac mains.
up to
out
are clearly marked)
range. Refit
10V
supply
the
mains
the
printed
factory
be
be altered to suit:
10%
of lhe nominal
changes.
cover must
lwo small
protective
page
on
ac working.
circuit
is cleârly
made
if lhe
be
plastic
should
be
cover.
13.
Mains
Inout Connectlon
The mains input conneclion is via
amplilier chassis must be
A simple reiaining clip
accidentally.
The mains lead
regard
dug
supplied should
to lhe following
connected to
ensures that ihe mains
be
colour convention:
a standard
ground
wired
to
lhe
CEE22
via
conneclor
mains
plug
the mains
cannoi be rêmoved
power
and socket.
supply lead.
suppty
ptug
The
with
Earthing Requirements
Mounling/Thermal
Considerations
Brown wire
Bluo wire
Green/Yellow wire
The
Brown wire must
Red.
The Blue wire must
Black.
coloured Green
,Voter The amplilier must
or if ânothêrtype
at the distribution board. lf in
Quad
liability for improper inslallation
thal lhe mains
amplitier chassis.
The
.ack. ltoccupies 1U
ablo to dissipate
airflow
the
A suitâble bracket fixed
of the amplifier.
The amplifier may also be
to ensure that there is ân
especially it the amplifier is
significant benefits in raising
adhesive type) as this will
The Green^/ellow
advises lhai
240
Ouad
isavailable. Additionallythe
rear
amplifieris intended for mounting
by using the
be connected lo
be connecled
wire must
or Green/Yellow.
prolecled
be
plug
of
powêr
most
is
used, by a 10A fuse
doubt consult
proper
salety
of operation. lt is
lead
earlh connêction is
(45
mm) ofspace. In
of its wâste heat from
M6
lapped holes in
rear
to the
operaled lree stânding. In
ample supply ot tree llowing
to be driven hard lor
the amplifier
allow air lo flow
Live
conneclion
Neulral conareclion
Safôty
lho
be connected to lhe {erminal marked
by a 10A fuse when a 13A
procedures
amplifiercan be restrained
ofthe rack frame
earth
plug
terminal mârked L
to lhe terminal marked N
either in the
a oualified electrician.
are f ollowed as they cannot
usually a sâlety requirement
properly
in
a standard 4gg mm
lhis environment
the
side
the rear of the heatsink
cân be
long
on short feet
benealh the amplitier
ptug
connecled
the amplifier wi
provided
fins
from moving
attached to ihe reâr
thls casê it is necessary
âir to
the
periods.
(for
example selt
or coloured
or coloured
E or
plug
is used,
or adaptor, or
accepl
to the
(19
inch)
be
that a free
al
extrusion.
heatsink
case.
There
fins
are
Conneclors
ln
enclosed spaces, for example when
which also dissipates signiticani wasle
provision
the
Thereexists
the rear
XLR
11
ot the
panelofthe
style 3'pole
should be
gender
forced
of
avarietyol inpul ând
noted
of chassis connector
ventilation for
240followslhe
Quad
female
thai some manufacturers
connector
all the equipment in
oulput connector co nventions.
and thjs is marked
and of the NAB
placed
heal, consideration
in a rack
lEC263wiring
have used lhe
conveniionforthe input
on the
altematve combinalions
convention.
wilh other
should
the rack cabinel.
equipmenl
givon
be
Thewiring
panel.
rear
to
of
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