Ibiza COMBO210 Manuel D'utilisation page 6

Hum
Output noise
Feedback
No sound in the headphones
SPECIFICATIONS
System
System Type: ...................................................................... Powered mixer with 2 two-way bass-reflex enclosures
Maximum SPL Output: .............................................................................. 124 dB peak system output (pink noise)
Frequency Range (-10 dB): ................................................................................................................. 60 Hz - 20 kHz
Frequency Response (±3 dB): ............................................................................................................. 75 Hz - 19 kHz
AC input: .................................................................................................................................... 220∼240V 50/60 Hz
Amplifier ....................................................................................................................................................... Class D
System Power Rating: ......................................................................................................................... 2 x 150 Watts
Output Connector: ......................................................... 2 x 6.35mm stereo Jacks (unbalanced) amplifier outputs
Mixer
Input Connectors: ........................................................................................ 8 inputs (4 Mono Mic/Line, 2 x Stereo)
Channels ........................................................................................... 1-4 are XLR / 6.35mm jack combo connectors
................................................................................................. XLR is a mic level input, 6.35mm is a line level input
....................................................... 5-6, one pair of balanced 6.35mm stereo Jacks, and a pair of RCA stereo jacks
.........................................................................................................................................7-8 is a 3.5 mm stereo jack
Input Impedance: ....................................................................................... Ch 1-4 Combo: XLR 3 K Ohms Balanced
....................................................................................................... Ch 1-4 Combo: stereo jack 20 K Ohms Balanced
.................................................................................................................... Ch 5-6: stereo jack 25 K Ohms Balanced
.......................................................................................................................... Ch 5-6: RCA 12 K Ohms Unbalanced
..................................................................................................................... Ch 7-8: 3.5 mm 30 K Ohms Unbalanced
Output Connectors: ................................................. Monitor outputs: one pair of balanced 6.35mm stereo Jacks,
.................................................................................................................................... one pair of RCA jacks (stereo)
Headphone output: ............................................................................................................. one 3.5 mm stereo jack
Signal Indicators:
........................................................................................................................................ Main Output LED vu-meter
............................................................................................ Limit: Red LED indicates that limiter circuit is triggered
............................................................................................................. Signal: Green LED indicates signal is present
.................................................... Signal Indicators: Ch 1-4 Peak LED: Green = signal present, Red = input overload
EQ: .......................................... Individual channel Bass and Treble controls, centre detent, +/-6 dB cut and boost
Speaker
Woofer ...................................................................................................................................................... 10"/25cm
Tweeter: ................................................................................................... 1 x 1.5" neodymium compression driver
Crossover Frequency: ....................................................................................................................................... 2 kHz
Crossover Type: ................................................................... Passive network, 2nd order filters (-12 dB per octave)
COMBO210
Too much bass
Bad grounding
Long cable runs
Wrong gain setting
Problem with a source device
Unused channel volumes too high
Microphone is too close to the
speakers
Monitor output volume control is set
to 0
Channel input too low
Wrong impedance
Reduce the bass control
Plug all mains leads into the same
outlet
Don't use unbalanced signals on longer
cable runs.
Reduce the input levels and increase
the output levels of your source
devices.
Unplug all input sources one by one
until the noise stops. Then you know
which unit creates the problem.
Set the volume of all unused channels
to 0
Place the speakers between the
audience and the microphone
Turn up the volume control
Turn the channel input volume up
The impedance of your headphones is
too high. Use headphones with lower
impedance
6