ENGLISH
OPERATION MANUAL
JB SYSTEMS
®
3/20
PSA-8
FUNCTIONS AMPLIFIER
1.
MIC INPUT:
This input accepts both
balanced
and
unbalanced
microphones.
Attention:
To prevent
damage to the tweeters of your
speaker cabinet, please set the micro
input level (2 to zero before you
connect
the
microphone.
Once
connected you can turn the level up to
the desired level.
2. MIC LEVEL:
Used to set the input
level of the microphone input (1).
3. LINE LEVEL:
Used to set the input
level of the line input (4). Always set
the
control
to
minimum
before
connecting any audio source.
4. LINE INPUT:
This input accepts both
balanced (3pin-XLR) and unbalanced
(RCA, cinch) line level audio signals
like for example: CD-player, tuner,
MP3-player, ...
Attention:
although the cinch input is
stereo, the signal will be converted to
mono inside the speaker.
5. TONE CONTROLS:
Used to adjust
the treble and bass of the master
signal.
6. LINE OUTPUT:
This balanced output
(3pin-XLR) makes it possible to
connect several speaker cabinets
together, the line output is NOT
influenced by the settings for the tone
controls (5).
7. POWER LED:
indicates that the
amplifier is switched on, on the front
panel you will find a second power led.
8. CLIP LED:
is lit when the amplifier is
clipping (close to distortion). You are working on the limits of the amplifier, please turn the volume a
little down.
9. VOLTAGE SELECTOR:
used to select the mains input voltage, 115Vac or 230Vac. Check this switch
BEFORE you connect the unit to the mains.
10. MAINS INPUT:
Mains input with IEC socket and integrated fuse holder, connect the supplied mains
cable here.
11. POWER SWITCH:
Used to switch the internal amplifier on/off. The Power led (7) is lit while the cabinet
is switched on.
