JB Systems XO 2.4 Manual De Instrucciones página 4

ENGLISH
CONNECTIONS
Use good quality cables to prevent bad audio quality.
For more information on connections, please refer to the next chapter and the picture below.
Be sure to turn off the equipment before you make changes to the different connections.
In this manual we talk about "line inputs". This is a global name for inputs with a level between 750mV and
2V. This includes tuners, videos, CD-players, etc.
FUNCTIONS (FRONT)
1. Input Gain: Controls the INPUT level with +/- 12dB.
2. Low Cut Switch: Push this button to select the 40 Hz high pass filter. Use this filter to protect your
speakers and amplifier from unwanted subfrequencies that only consume power but don't necessarily
add more punch
3. Crossover Point selection: Selects the crossover point between:

In Stereo mode: LOW and HIGH frequencies

In Mono mode: LOW and MID frequencies on the Channel 1
MID and HIGH frequencies on the Channel 2
4. X10 LED: X10 LED off: you can control the x-over frequency from 45Hz to 960Hz
X10 LED on: you can control the x-over frequency from 450Hz to 9.6kHz
JB SYSTEMS®
OPERATION MANUAL
3/30 EC102/XO-2.4
ENGLISH
5. LOW/MID Output: Controls the:

In Stereo mode: LOW frequency output level from - ∞ to +6dB ( both channels )

In Mono mode:
LOW frequency output level from - ∞ to +6dB on Channel 1
MID frequency output level from - ∞ to +6dB on Channel 2
6. LOW/MID Phase Invert Switch: Switch for inversing the polarity. A LED indicates your selection:

In Stereo mode: you can inverse the polarity on the LOW output

In Mono mode:
you can inverse the polarity on the LOW output on Channel 1
you can inverse the polarity on the MID output on Channel 2
Remark: Use this switch with care. This switch is most effective on the low frequencies: switch the
inverter on/off while listening to the music. Choose the position with the most bass reproduction
7. HIGH Output: controls the HIGH frequency output level from - ∞ to +6dB. When you work in Mono
mode, you can only use the Channel 2 knob.
8. HIGH Phase Invert Switch: Switch for inversing the polarity on the HIGH output. A LED indicates your
selection. When you work in Mono mode, you can only use the switch on Channel 2.
Remark: In most cases you don't need to use this switch. When the setting is wrong, it can bring you
more bad then good
9. MONO/STEREO LED: This LED indicates if you are working in MONO or STEREO Mode:

MONO Mode: Both channels work together to obtain a 3-way mode crossover

STEREO Mode: Both channels work independently to obtain an 2x2-way crossover
10. Power Switch: Switch for turning the unit ON/OFF
FUNCTIONS (rear)
11. Mains Input: with IEC socket and integrated fuse holder, connect the supplied mains cable here
12. Ground Lift Switch: In some cases nasty hum noises can occur due to ground loops in your setup.
Setting the Ground Lift Switch to the position "lift" breaks the ground loop between the EC102/XO-2.4
and the chassis grounds of various other components in your setup. As a result the hum noises will
disappear.
13. XLR Inputs: Balanced inputs using XLR cables. When you work in Mono Mode, you only have to
connect an XLR cable on Channel one
14. LOW/MID XLR Output: Balanced outputs using XLR cables:

In Stereo Mode: When you work in Normal mode ( see number 17 for more information
), you have to connect an XLR cable to Channels 1 and 2. When you work in Summed
mode, you only have to connect an XLR cable to Channel 1.

In Mono Mode: Channel 1 operates the LOW output.
Channel 2 operates the MID output.
15. HIGH XLR Output: Balanced outputs using XLR cables:
 In Stereo Mode: You have to connect an XLR cable to both channels

In Mono Mode: Only Channel 2 is used
16. MONO/STEREO Switch: With this switch, you can choose between MONO 3-way or STEREO 2x2-way
Mode
17. LF SUM Switch: With this switch, you can choose if you want your LOW frequencies in normal mode ( 2
outputs ), or summed ( uses only channel 1 output ) ( see number 14 for more information ). In summed
mode the low frequency from Channels 1&2 are put together so you don't have to use a splitter cable in
case you have only 1 subwoofer.
18. Crossover Frequency Switch: With this switch, you can choose between x1/x10 frequency range ( see
number 4 for more information )
JB SYSTEMS®
OPERATION MANUAL
4/30 EC102/XO-2.4