3 Applications
The active speaker system TXA-850CD is a com-
bination of a speaker system and an amplifier
with two mixable inputs (1 input for a microphone,
1 input for an audio source with line signal level,
e. g. CD player). A CD / MP3 player capable of
replaying USB mass storage devices and SD
cards and a receiver for a wireless transmitter
have been integrated. The receiver operates
with Diversity technique in the UHF range of
863 – 865 MHz, divided into 16 channels. The
matching transmitters are e.
g. ATS-12HT or
ATS-162T and all transmitters of the TXA-800
series. The transmission range depends on the
local conditions and may extend to up to 30 m
approx. with the transmitters indicated.
The speaker system is specially designed for
mains-independent operation. For power supply,
two rechargeable NiMH batteries are integrated
which will be recharged in case of mains connec-
tion. Thus, the unit is ideally suited for mobile PA
applications at events, lectures, etc. Via a line
output the mixed signal can be passed on to
another amplifier system. The speaker system
can be placed as desired or be mounted onto a
PA speaker stand (e. g. PAST series from MONA-
COR) via the stand sleeve on its lower side.
4 Power supply
The unit can be operated at a mains socket or via
the internal rechargeable batteries.
4.1
Mains operation / recharging the
batteries
1) To operate the active speaker system via the
mains and / or to recharge the internal batteries,
connect the mains cable provided to the mains
jack (11) and to a mains socket (230 V~/ 50 Hz).
2) In case of mains connection, the automatic
charging for the batteries is active: During the
charging process the four LEDs of the battery
indication (9) light up successively. For charg-
ing, it is not necessary to switch on the unit,
however, it is possible to operate it during
charging.
When the charging process is terminated,
the upper green LED lights up continuously.
3) After the operation or after charging the batter-
ies, disconnect the unit from the mains socket
to prevent unnecessary power consumption.
4.2
Battery operation
Prior to the first setting into operation, fully
recharge the batteries
chapter 4.1. During
battery operation the charging status of the bat-
teries is shown on the respective LED of the bat-
tery indication (9):
Recharge the batteries at the latest when the red
LED flashes.
5 Audio Connections
All connections should only be made with the
speaker system switched off.
5.1
Inputs MIC IN and LINE IN
As audio sources a microphone and an audio unit
with line output level (e. g. CD / MP3 player, tape
deck, radio) may be connected:
– Connect the microphone via an XLR plug or a
6.3 mm plug to the jack MIC IN (8). The micro-
phone input is balanced.
– Connect the audio unit to the stereo input LINE
IN (6) via RCA plugs. The signals of the left
and the right channels are added to a mono
signal.
5.2
Output LINE OUT
A recorder or another active speaker system for
PA applications may e. g. be connected to the
RCA jacks LINE OUT (5). At both jacks the mixed
mono signal of the speaker system is available.
The control MASTER (2) does not affect the LINE
OUT signal, however, it is affected by the adjust-
ment of the tone controls (3).
Hint: It is possible to set up several active speaker sys-
tems TXA-850CD which receive and reproduce the sig-
nal of one wireless transmitter. No additional cabling is
required.
6 Operation
1) Prior to switching on the speaker system, set
the control MASTER (2) to “MIN”.
2) Switch on the speaker system with the
POWER switch (1). The switch lights up. The
battery indication (9) shows the charging sta-
tus of the batteries (
chapter 4).
3) Switch on the audio sources used: micro-
phone / audio unit connected, wireless receiver
(operation
chapter 6.1), CD / MP3 player
(operation
chapter 6.2).
4) Advance the control MASTER (2) for the over-
all volume of the speaker system to such an
extent that the subsequent adjustments can
be heard well.
5) Mix the signals of the audio sources in the
desired volume ratio or fade in and out single
sources as required:
– for the unit at the input LINE IN (6) use the
volume control VOL. (7)
– for the microphone at the input MIC IN (8)
use the volume control MIC (4)
– for the signal received of the wireless trans-
mitter use the receiver volume control (18)
– for the CD / MP3 player use the volume con-
trol VOLUME (32)
Set the volume controls of the sources not
used to minimum or switch off the sources.
6) Adjust the sound with the control TREBLE for
the high frequencies and the control BASS (3)
for the low frequencies and the definitive vol-
ume for the active speaker system with the
control MASTER.
7) The priority feature of the microphone may be
activated with the button VOICE PRIORITY
(10). When the button is pressed (LED above
it will light up), the volume of the music cur-
rently replayed will be substantially attenu-
ated when announcements are made via the
microphone connected or via the wireless
transmitter used. To deactivate the feature,
disengage the button.
Note: The priority feature of the microphone will also
affect the output signal of the jacks LINE OUT (5).
8) After operation and, to prevent unnecessary
battery discharge, also for longer breaks,
switch off the speaker system with the
POWER switch.
6.1
Wireless receiver
1) To switch on the receiver, turn up the on/off
switch and volume control (18) from the posi-
tion “OFF”. The LED A / B (13) shows red or
green, depending on the internal receiving
antenna (A or B) which is active at present.
The display (12) shows the transmission
channel adjusted. To display the radio fre-
quency of the channel, keep the button
or
(17) is pressed.
2) For selection of an unused channel free of
interference, leave the transmitter still switched
off and adjust the channel at the receiver first:
1. To switch to the selection mode for the
channel, press the button SET (16): The
channel indication on the display flashes.
2. Select the channel with the arrow keys (17):
for channel selection “up”,
for channel
selection “down”.
3. To confirm press the button SET.
Note: If no button is pressed in the selection mode
for 10 seconds, it is exited.
If the LED RX (14) lights up after the channel
adjustment with the transmitter switched off,
signals of interference or signals of other
transmitters are received on this channel. In
this case adjust another channel.
3) Switch on the transmitter and adjust it to the
same channel. The LED RX lights up to indi-
cate that a radio signal is received. The LED AF
(15) lights up when the transmitter transmits an
audio signal with sufficient level on the channel.
4) Adjust the volume for the audio signal
received with the control (18).
6.2
CD / MP3 player
The player allows to replay standard audio CDs
and CDs, USB mass storage devices and SD
cards with MP3 files.
Note: With rewritable CDs (CD-RW), problems may
occur when replaying according to the CD type, the CD
burner and the burning programme used.
The anti-shock memory of the player will be able
to compensate temporary shocks or vibrations
occurring during the CD sampling; however, it will
not be able to compensate continuous, severe
vibrations. For CD operation, the system must
therefore always be operated in a stationary way,
i. e. it must be placed on a solid, immobile ground.
Note concerning sound interruptions and
reading errors
Cigarette smoke and dust will easily penetrate
through all openings of the unit and also settle
on the optics of the laser sampling system. This
deposit may cause reading errors and sound
interruptions. The unit must then be cleaned by
skilled personnel. Please note that there will be
a charge on cleaning, even during the warranty
period!
CAUTION
Never adjust the active speaker
system to a very high volume. Per-
manent high volumes may dam-
age your hearing! Your ear will get
accustomed to high volumes
which do not seem to be that high
any more after some time. There-
fore, do not further increase a high
volume after getting used to it.
To prevent damage to the batteries due to deep
discharge, please note:
Recharge discharged batteries as soon as pos-
sible. When storing the unit, consider the self-
discharge of the batteries: Charge the batteries
sufficiently prior to storage and during storage
regularly check their charging status and
recharge them, if required.
green
battery charge 80 – 100 %
green
battery charge less than 80 %
yellow
battery charge less than 50 %
red
battery charge less than 20 %
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