Inkel MA-410 User manual

OPERATING
MUTRUCHOIY
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MODEL
MA-44¢
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MA-610 / 7)
MA-910
t 4f + / PROFESSIONAL
_’ MUSIC AMPLIFIER

Unpacking and Installation
Although
it
is
neither
complicated
to
install
nor
difficult
to
operate
your
stereo
amplifier,
a
few
minutes
of
your
time
is
required
to
read
this
manual
for
a
properly
wired
installation
and
becoming
familiar
with
its
many features
and
how
to
use them.
Please
take
a
great
care
in
unpacking
your
amplifier
and
do
not
discard
the
carton
and
other
packing
materials.
They
may
be
needed
when
moving
your
set
and
are
required
if
it
ever
becomes
necessary
to
return
your
set
for
service.
Never
place
the
unit
near
radiators,
in
front
of
heating
vents,
in
excessively
humid
or
dusty
location
to
avoid
early
damage
and
for
your
years
of
quality
use.
Connect
your
com-
plementary
components
as
illustrated
in
the
following
page.
Features
e HIGH RELIABILITY
To
assure
absolute
Jong-term
reliability,
the
output
section
of
each
channel
incorporates
Multiple
Emitter Power Transistor, which provide safety margin 4:1.
HIGH POWER DRIVE
Triple
diffused
high
power
driver
transistors
are
employed
along
with
high
speed,
high
voltage
devices
for pre-driver and inverter stages.
ENERGY LIMITERS
Voltage-current
type
energy
limiters
are
incorporated
for
overload
protection
of
the
amplifier.
Due
to
the
large
safe
operating
area
of
the
output
stage,
the
limiter
does
not
actuate
until
driving
1.4
ohm
load
at
full
power.
¢ THERMAL OVERLOAD PROTECTION
In
MA-410
and
MA-610,
to
protect
the
output
stage
from
thermal
overload,
the
output
will
be
automatically
diconnected
from
the
load
(Loud
speaker)
by
use
of
thermal
switch
when
the
heatsink
reaches to 95°C.
The load will automatically be reconnected when the temperature drops to below 95°C.
In
MA-910,
when
the
temperature
of
main
heatsink
reaches
to
70°C,
fan
is
activated.
And
the
fan
is
stopped
when
the
temperature
drops
below
70°C.
AC POWER PROTECTION
When a harmful DC voltage is detected at the output terminals, the protection relay cuts off the pri-
mary AC line.
SURGE CURRENT PROTECTION :
These amplifiers are provided with output fuses to protect the loudspeakers from surge current.
BRIDGED MONO FUNCTION
For more powerful sound, these amplifiers can be used for monoral sound by selecting the mode selec-
tor to bridged mono function. , ,
Please refer to BRIDGED MONO operation.

Rear Panel Connections
OUTR
AUDIO MIXER
MULTI AMP SYSTEM
ELECTRONIC CROSSOVER
[° ° ea os Was wae Saae Ea
Q
Le
SPEAKER L
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Front
Panel
and
Rear
Panel
Controls
jnKes macro
PROFESSIONAL
MUSIC AMPUFIER
1. POWER SWITCH
To
turn
the
Amplifier
ON
or
OFF,
press
the
upper
or
lower
of
this
switch
button.
2. POWER INDICATING LED
This LED indicates power is turned ON.
3. HANDLES
You
can
handle
this
amplifier
easily
by
using
these
handles.
4. VU meter
The
large
VU
meters
are
provided
to
monitor
the
output
power
of
each
channel.
5. CLIP INDICATORS
Two
LED
indicators
illuminate
when
the
input
signal
levels
exceed
3dB
above
clipping.
Then
you
had better properly adjust the level controls.
6. LEVEL CONTROLS
Separate
level
controls
are
provided
for
channel
one
and
channel
two
input.
Clockwise
rotation
of
the controls increases level.

10.
11.
Bridged Mono Operation
. Set Mode Selector to MONO.
. INPUT CONNECTORS
These XLR jacks are for unbalanced input signal.
A
nominal
RMS
voltage
of
1.5
volts
will
drive
the
amplifier
to
rated
output,
and
the
input
impedance
are nominally 15000 ohms.
. MODE SELECTOR
Bridged
mono
operation
is
easily
achieved
by
this
recessed
slide
switch.
The
input
is
applied
to
chan-
nel
one
only,
and
the
corresponding
front
panel
gain
control
is
used
to
set
the
level.
Please
note
Bridged
Mono
Operation.
. OUTPUT TERMINALS
Output
terminals
are
dual
five-way
binding
posts,
which
are
identified
as
to
polarity
with
a
red
and
a
black
terminals.
We
suggest
the
use
of
dual
banana
plugs
as
a
convenient
and
reliable
method
of
hook-up.
Do
not
parallel
the
two
outputs
of
each
channel
by
connecting
them
(together,
or
parallel
them)
with
any
other
amplifier
output.
FUSE HOLDER
This
fuse
holder
contains
AC
primary
fuse.
When
fuse
is
blown
out,
it
should
be
replaced
with
the
same
type
just
like
following
table.
If it continues to blow, stop replacing fuse and refer servicing to qualified personnel.
AC 100V/120V AC 220/240V
* Output fuses are built in the sets.
AC POWER CORD
Plug this AC input cord into AC outlet.
. Connect a mono input signal to channel one input jack.
.
Connect
the
speaker
load
to
the
two
red
terminals
of
each
channels.
Please
confirm
the
(+)
terminal
of speaker to channel one and the (—) terminal to channel two.
. Do not use the black terminals of each channel.
5. Please notice to connect the speaker impedance 8 ohm or above.
. And adjust the channel one volume not to illuminate the clip LEDs of front panel.
si ase

Specifications
MODEL MA-410 MA-610 MA-910
Rated Output Power
at 8 ohms, 1KHz (Bridged Mono) 260W 560W 700W
at 8 ohms, 1KHz (Stereo per CH) 100W 175W 300W
at4 ohms, 1KHz 150W 280W 400W
Total Harmonic Distortion
Channel Separation at 1 KHz
Dimensions 483(W)x 133(H)x385(D)mm 483(W)x177(H)
x385(D)mm
Weight (Net) 18 Kg 19 Kg 27 Kg
Power Requirement AC100V/120V/220V/240V , 50Hz/60Hz

MODEL MA-910
VOLUME BD.(4005117500)
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CHANNEL, Two
INPUT 1, 8V@ptten | 0. 778V) CLIP FROM CH2
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INPUT TO CH2
PROTECTION RELAY
BRIDSED
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FOR UL,CSA VERSION PGR. GENERAL
——
SERVICE
INFORMATION——
EUROPE
VERSION
1, RESISTANCE VALUES ARE INDICATED IN OHMS UNLESS OTHERWISE SPECIFIED. (K =1000, M=100,000)
2. CAPACITANCE VALUES ARE SHOWN IN MICROFARADS UNLESS OTHERWISE NOTED .
(A MICRO- MICROFARADS )
3. ALL VOLTAGES ARE REFERED TO GROUND UNDER THE FOLLOWING CONDITIONS. @505 : TRIAC TC25C 60
' ac: RMS Q10! - 9103, 0401 , 0402 , 0591-0504, O60! * KTC 2240BL
4 —— PRECAUTION —— 2104, Q110 : KTCIOISY
(A) ALL COMPONENTS: manxen A\ must BE REPLACED ONLY WITH ORIGINAL TYPE SPECIMED BY Q105, Q112: 2NS41B.
‘THE MANUFACTURER , DONG WON PA SOUND AND INSTALLED AS THE ORIGINAL wiTH Q107, 0108: 2N3440 @)
SPACERS AND POSITIONED AWAY PROM ADJACET COMPONENTS WHERE APPLICABLE . Q109 : KTCISISY
1B) ALL SOLDERING MUST BE DONE IN A PROFESSIONAL MANNER USING SOLDER WITH Qitl, Qr13-—O123 : 280424
RESIN CORE ONLY. 125,26 : KTASTOBL
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ALL
COVES,
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SPACERS
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BEFORE
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1D) A DAMAGED POWER SUPPLY CORD MUST BE REPLACED BEFORE RETURNING APPLIANCE D109, DIO, DIIS : 1IN4004
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MODEL MA-410
MA-610 a
TOSARIUL = (MA- 410)
VOLUME BO 4005117500
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CHANNEL Two (2828096000 MA-410)
LEVEL METER (2828098800 MA-G10
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PT
(2828096010 MA-410)
(2828096010 MA- 610) (2828098900 MA-610)
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—— SERVICE WIPORMATION—
1, REMSTANCE VALUES ARE INDICATED IN OHMS UMLESS OTHERWISE. (K=1,000, M=1,000,000) : :
2. CAPACITANCE VALUES ARE SHOWN I MICROFADADS UNLESS OTHERWISE NOTED. (M= MICRO—MICROPARADS) we Pombo
3. ALL VOLTAGE ARE REFERED TO GROUND UNDER THE FOLLOWING CONDITIONS. = —— NOTES
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MANUFACTURER , DONG WON PASOUND AND INSTALLED AS THE ORIGINAL WITH SPAGERS AND
POSITIONED ANAY FROM ADJACENT COMPONENTS WHERE APPLICABLE.
8) ALL SOLDERING MUST BE DONE IN A PROFESSIONAL MANNER USING SOLDER WITH RESIN CORE ONLY.
C) ALL COVERS, SHIELD AND INSULATING SPACERS MUST BE REPLACED BEFORE RETURNING APPLIANCE
TO CUSTOMER
0) A DAMAGED POWER SUPPLY CORD MUST BE REPLACED APPLIANCE TO CUSTOMER.
€)A DIELECTRIC TEST COSISTING OF ISOOV AC GOHE [S TO BE APPLIED BETWEEN BOTH BLADES OF THE
POWER SUPPLY CORD ATTACHMENT PLUG AND THE EXPOSE CONDUCTIVE SURFACE OF THE APPLIANCE
FOR A PERIOD OF NOT LESS THAN ONE SECOND BEFORE RETURNING TOAPPLIANCE TO CUSTOMER.
F) THE PW MARKED RESISTORS ARE MOUNTING ABOVE THE P.C.B ON SLEEVES.
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