Bedienungsanleitung Citronic CX 34 (Seite 4 von 4) (Englisch)

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the power amplifier which will power the main drivers of the mid-top cabinets and the HIGH outputs are connected to the inputs of the power

amplifier which will drive the high frequency drivers in the mid-top cabinets

Connect the crossover to mains power via the supplied IEC lead, ensuring the supply voltage is correct.

There may be slight variations from these set-ups but all follow the same basic principles.

Operation

It may help to know the frequency responses of all speaker components in the system or alternatively, crossover setup can be done by ear. The

main parameters are the crossover frequencies and gain amounts for each output.

Select the MODE that the crossover is to be used from the buttons on the rear panel. Each mode gives controls different parameters, so care

must be taken to read the control’s function printed on the front panel for the given mode.

If tri-amped or quad-amped systems are used, the Crossover frequency multiplier should be pressed in for MID/HIGH or HIGH-MID/HIGH

crossover points. This causes the frequency control to operate at a much higher frequency (10x) which is more suited to the division between

mid and high frequency drivers.

With all amplifiers switched off, turn down all GAIN controls and switch on the crossover. Switch on amplifiers and turn up the volume of each

output. Play the signal from the sound source (mixer) through the crossover and gradually increase the gain controls of each section. Gradually

rotate the XOVER FREQ (crossover frequency) control for LOW/HIGH or LOW/MID or LOW/LOW-MID until the desired bass character is

achieved. This is the control that determines the highest frequencies that will be fed into the sub cabinets. Lower crossover settings will need

higher gain settings to compensate for frequencies that are not fed into the sub cabinet (filtered out).

Repeat the crossover frequency setting process for LOW-MID, MID, HIGH-MID and HIGH frequencies (where appropriate) adjusting the

crossover frequencies to suit each driver and gains to balance the range of frequencies.

Occasionally, frequencies from some cabinets in stereo setups can have opposing phase characters. Also, some drivers may sit physically

further back from others. This can cause cancellation of frequencies. To deal with this, the Citronic crossovers have Phase switches, which can

be pressed in to invert the phase of the signal (push becomes pull and vice versa). This can be tested by trial and error to hear if pressing the

switch in has a beneficial effect to the volume level of that particular frequency.

To further help avoiding phase cancellation, the LOW can be “summed” to a mono signal (LF SUM), eradicating differing signals in the lower

registers of a stereo signal.

Remember to turn down amplifiers and switch off prior to powering down the crossover to avoid loud noises in the sound system.

SPECIFICATIONS

CX34

CX23

Power supply

115/230Vac selectable 50/60Hz (IEC)

Input impedance: balanced

40kΩ

50kΩ

Input impedance: unbalanced

20kΩ

25kΩ

Output impedance

220Ω

200Ω

Crossover ranges: stereo

50Hz-5kHz;750Hz-7.5kHz

45-960Hz (switchable 10x) or 450Hz-9.6kHz

Crossover ranges: mono

50Hz-5kHz;750Hz-7.5kHz; 2kHz-20kHz

45-960Hz (switchable 10x) or 450Hz-9.6kHz

Filter slope

18dB/octave

24dB/octave

Frequency response

20Hz-25kHz +0/-1dB

20Hz TO 20KHz, +0/-0.5dB

Signal to noise ratio

>90dB

THD

<0.006% @ +4dBu, 1KHz

<0.004% @ +4dBu, 1KHz

Dimensions

482 x 170 x 44 mm

Weight

2.5Kg

2.5kg

TROUBLESHOOTING

No function and Power switch LED is not lit

Ensure mains voltage is correct (check selector) and connected properly

Ensure front panel power switch and mains outlet switch are on

Power is on but no audio output

Check XLR leads are OK and connected properly

Check that INPUT and OUT GAIN controls are not turned fully down

Check that inputs and outputs are connected the correct way around

Check that LOW out is not connected to amp for mid-high cabs in error

Check that MID or HIGH out is not connected to amp for sub cabs in error

Distorted output

Reduce INPUT and HIGH/MID/LOW OUT Gain controls

Lower XOVER FREQ for sub cabinets

Check frequency multiplier switches are set correctly

Output is very low level

Check XOVER FREQ is set correctly for each output

Test phase switches of different outputs to hear if they need to be inverted

Increase Gain control(s) to compensate

Note: for further troubleshooting, refer equipment to qualified service personnel for testing

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