Behringer B2031 user manual Applications, Connection, Level setting

2. APPLICATIONS

2.1 Connection

Use the enclosed power cord to connect the B2031 to the mains. To avoid ground loops, both speakers and the mixing console should be fed from the same outlet. For your convenience, the TRUTH features an automatic power-up system which activates the B2031 as soon as a signal is present on its input, and deactivates the speaker after signal pauses of more than five minutes.

Function: The switch for the automatic power-up system has three positions. When set to OFF, the

speaker is completely switched off and cannot be activated with switch 5 . Position AUTO allows the automatic operation as mentioned above. In position ON, the B2031 is activated all the time and can be switched off only with switch 5 .

+Be sure to switch the TRUTH off with switch

5

during longer pauses.

Now connect both speakers to your console by means of commercial XLR or TRS cables. Since the B2031 is an active speaker system, instead of conventional speaker cables you will need normal TRS or XLR cables.

Connect the TRUTH to the Control Room outputs of your console, so as to be able to control the monitoring volume independently of the Main Mix level. If your console does not have such outputs, you can also use the Aux, Tape or Main outputs. However, in this case the speaker volume cannot be set independently of the Main Mix level, i.e. you must adjust the monitoring volume on the TRUTH. Please consult the operating instructions accompanying your console to find out whether it has balanced or unbalanced outputs. Connect these

outputs to the TRS 3 or XLR 4 input. If possible use the balanced connectors, so as to avoid interference and hum. It won't help, however, to connect unbalanced outputs with balanced inputs. The benefits mentioned above will apply only when both inputs and outputs are of the balanced type. If all else fails, you can still connect the TRUTH to the headphones output of your console.

+Be sure to mute the signal sources before you put the B2031 into operation.

Once the TRUTH has been connected as described above, you can activate the speaker with switch

5

.

2.2 Level setting

When the TRUTH has been connected properly and switched on, you can now turn up the console output that feeds the B2031. Provided you have a signal source connected, you now hear the audio material as it is

played back by the TRUTH. The INPUT TRIM control on the rear panel is set to 0 dB ex-factory, i.e. unity gain, which is okay when you feed the TRUTH from a pro-level console. In this case, the B2031 automatically operates at maximum level, provided that your console has been set up correctly and its output is set to 0 dB.

The LIMIT LED 2 helps you control the level. It lights up as soon as overloading causes one of the internal protections to respond. The TRUTH doesn't get damaged when the LIMIT LED lights up with occasional signal peaks. However, please make sure that it won't light up all the time, because sooner or later this will activate the thermal protection system and temporarily mute the built-in amplifiers, to warn you that you are driving the

B2031 too hard. If so, you can reduce levels either on your console or using the INPUT TRIM control .

If the outputs on your console don't provide studio-level signals, you can turn up the INPUT TRIM control. If you connect the TRUTH to the preamp output of your stereo system, it may also be necessary to raise the level on the TRUTH itself. To build up a rudimentary stereo system, you can directly connect the outputs of a CD player (if they can be controlled in volume) to the B2031's inputs, and use the CD player to adjust the volume.

+The TRUTH is capable of producing high volume levels. You should mix your recordings at moderate levels, so as to avoid listening fatigue and hearing impairment.

10 2. APPLICATIONS