Controls And Connections - JB Systems PSX-12A Mode D'emploi

ENGLISH
• In order to prevent electric shock, do not open the cover. There are no user serviceable
parts inside.
• Never repair a fuse or bypass the fuse holder. Always replace a damaged fuse with a
fuse of the same type and electrical specifications!
• In the event of serious operating problems, stop using the appliance and contact your
dealer immediately.
• Please use the original packing when the device is to be transported.
• Due to safety reasons it is prohibited to make unauthorized modifications to the unit.
CABLES TO BE USED
For the line level in/outputs you can use readymade XLR-cables such as our JB
SYSTEMS codes 7-0063 (5m) or 7-0067 (10m). Other lengths are also available.
For the speaker output: you can use readymade cables such as our JB SYSTEMS
codes 2-0505 (5m). Of course you can also assemble the speaker cables yourself. Take
care to use good quality speaker cable with at least 2x 2.5mm² conductors. You will also
need a pair of Neutrik Speakon® NL4FC connectors. This connector has 4contacts: +1 -1
+2 -2. Only use the +1 and -1 contacts. Your speaker cable has 2 conductors with different
colors. Be sure to connect the same color on each side of the cable to the corresponding
contact! (+1 to +1 and -1 to -1).
If you inverse the conductors, poor sound quality with a lack of low frequencies will
be the result.
JB SYSTEMS® 3/36
OPERATION MANUAL
PSX-12A Powered
ENGLISH

CONTROLS AND CONNECTIONS

1. MICROPHONE LEVEL: Used to set the input level of the microphone input (5).
2. LINE LEVEL: Used to set the input level of the line input (6)
3. TONE CONTROLS: Used to adjust the treble and bass of the master signal.
4. MASTER LEVEL: Used to set the overall volume of the amplifier. Always set the
master level to zero when you switch the cabinet on, after this turn up the volume to the
desired level.
5. MICROPHONE INPUT: This input accepts both balanced and unbalanced
microphones. You can use both ¼"jack and male 3pin-XLR connectors.
Attention: To prevent damage to the tweeters of your speaker cabinet, please set the micro input level
(1) to zero before you connect the microphone. Once connected you can turn the level up to the desired
level.
6. LINE INPUT: This input accepts both balanced and unbalanced line level signals. The
output makes it possible to connect several speaker cabinets to the same line output of
a mixer.
7. SPEAKER OUTPUT: you can connect a second "passive" speaker cabinet to this
Speakon output. Connections are +1 and -1.
Attention: This output only supports 8Ω loads!!! Never connect a 4Ω speaker or more than one 8Ω
speaker cabinet to this output! This can damage the built-in amplifier.
JB SYSTEMS® 4/36
OPERATION MANUAL
PSX-12A Powered