User Guide

The SA 120 is o high
quolity
system
omplifier,
powered
by 240
/l10
Voc moins or
24VDC
stond-by
power.
Sturdily conslrucled wiih
oluminium extruded, slondord
rock mouniing froni
ponel,
generous
heoi sinking ond o
conservotively roled 300VA
toroidol
power
lronsf ormer,
ensure the omplifier comfortobly
meets
specificolions.
INPUTS:
SAl20
Hos six universol
chonnels with seporole chonnel
goin
con'frols oncl omple
heodroom. Eoch chonnel will
occept bolonced or
ore muied. A single chonnel
muting
module TX3010 is olso
ovoiloble. This unit
plugs
inio
ihe some
sockel in the
omplifier cnd will
provide
muting of chonnels 3 to 6
when
ocJivoled from chonnel one.
INSERTION
POINT: A TRS
{6.5mm)
jcck
insert
poinl
belween the
pre-omp
ond
power-omp
sioge is occessoble
ol the reor. l1 is ideol for o
Grophic
EQ,
FBX Feedbock
Exlerminoioror
or ony oiher
type of
processor.
PROTECTION: Sofl knee,
internol current limiting,
provides protection
from
overlood ond overdrive
conditions.
DC OPERATION;
A trickle
chorge circuii
provides
o
moximum 300mV
outomoticolly
to o
stond-by botiery
connected to lhe 24Voll DC
inpu1.
TONEGENERATOR:A4lone
module
TX5488 is on opiionol
occessory. The
unit
plugs-in
to c
receplocle inside the omplifier.
A choice of ony one
of four
tones moy
be selected. They
ore: Eleclric bell, Pre-
onnounce chime, Aleri ione
|AS222O.1)
and
Evocuoie tone
(AS2220.1).
Any of
the tones
moy be oclivoted from
o
remote
point
by meons of
exiernol
connections of the
reor
porel
of the omplif'er.
Thei.
octivofion outomoticolly
mutes
inpuls 2 to 6 of
the
omplifier.
ARCHITtrCTURA.L AND
f,NGINEERING
SPECIFICATIONS
rhe
m;xer omplifier sholl hove six
univenol
inpuis
eoch comprising
bolonced microphone, with o
sensitivity of
600 micro-volts ond
XLR
femole sockeis. Auxiliory
inputs
must hcve o sensitivily of 40
mV
for inpuls
one to five ond
200mV for
lnpul
6
to occommodote o
CD
or other lrigh level input. Eoch
Aux
input will hove RCA Phono
sockeis.
The moster seclion shcll include
one mcsler
volume contro
,
two
EQ
controis, one
with
l2dB of boosl
ond
cut ot l00Hz ond the
other
with
9dB
of boost
ond cut ot lOkHz.
A
power
on
/
off switch with red
"on " neon ond on
LED disploy Vu
groduoted
from
+21
io
3dB
sholl
form
port
of this section.
The omplifier
chossis
sholl be solidly
consirucled, suitoble
for rock
mounting in o stondord 482mm
widih rock
wiihout
lhe need
for
unbolonced, microphone, line
ond ouxiliory inputs. The unil hos
industry stondord XLR
microphone
sockels ond
RCA
Phono ouxiliory sockets for eoch
chonnel.
OUTPUTS: Speoker
ouiputs for
the
SAI20s
ore 100
& 7O
Volls. 4
&
B
ohm isololed ironsforner line
outputs. A seporoie bolance
mole XLR socket
provides
c
mox
700mV bolcnced tronsf ormer
isoloied oulpul for connection io
oddilionol
power
ompliflers. A
seporote tope
recorder oulpul
is supplied by meons of on RCA
Phono socket.
MUTING:
SA120
ls equipped wilh
o multi-pin receplocle on the
circuit boord, which
occommodoies on oplionol
TX30I 4 two chonnei rnuting
module. When chonnel
I
octivotes by
voice or
progrom
input
(VOX).
oll remoining
inpuls
2 lo
6
ore muted. When chonnel
2
octivoies
by
VOX. inputs
3
io
6
odditionol
cccessories.
rocl. mounting
Speoker
outpuis
will be
t'onsformer isoloted ond conprise.
100
&
Z0
volts.
4 ond
8
ohms.
The
ompliiier must be copoble
of
delivering 120 wotis RMS ot I00
volts into on
80
ohms inductive
lood from moins ond 24VDC. wiih
Jess thon 0.5% disloriion ot I kHz
ond
with systern hum ond
noise of
less thon -Z2dB.
The omplifier
sholl be Audio
Telex,
Ausirolion mode, model SAl20.
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REAR VIEW
OF SA12O AMPLIFIIR