Behringer HA4700, HA8000 manual Control Elements, Front panel, POWERPLAY PRO-XL HA4700/PRO-8HA8000

POWERPLAY PRO-XL HA4700/PRO-8 HA8000

1.1.1 Initial operation

Please make sure the unit is provided with sufficient ventilation, and never place the POWERPLAY PRO on top of an amplifier or in the vicinity of a heater to avoid the risk of overheating.

+Before plugging the unit into a power socket, please make sure you have selected the correct voltage:

The fuse compartment near the power plug socket contains three triangular markings. Two of these triangles are opposite one another. The voltage indicated adjacent to these markings is the voltage to which your unit has been set up, and can be altered by rotating the fuse compartment by 180°. ATTENTION: This does not apply to export models that were for example manufactured only for use with 120 V!

+If you alter the unit’s voltage, you must change the fuses accordingly. The correct value of the fuses needed can be found in the chapter “TECHNICAL DATA”.

+Faulty fuses must be replaced with fuses of appropriate rating without exception! The correct value of the fuses needed can be found in the chapter “TECHNICAL DATA”.

Power is delivered via the cable enclosed with the unit. All requiered safety precautions have been adhered to.

+Please make sure that the unit is grounded at all times. For your own protection, you should never tamper with the grounding of the cable or the unit itself.

1.1.2 Warranty

Please take a few minutes and send us the completely filled out warranty card within 14 days of the date of purchase. You may also register online at www.behringer.com. The serial number needed for the registration is located at the top of the unit. Failure to register your product may void future warranty claims.

1.2 The user’s manual

This user’s manual has been written in such a way to enable you an overview over the control elements of the unit and offers at the same time detailed information about possible applications. To facilitate quick look-ups, control elements have been described in groups depending on their function. Should you need detailed information about specific topics not covered in this manual, please visit our website at www.behringer.com. For example, additional information about power amps and effects processors is found there.

ATTENTION!

+We would like to bring your attention to the fact that extremely loud sound levels may damage your hearing as well as your headphones. Please lower all OUTPUT LEVEL knobs leftwards before powering up the unit.

2. CONTROL ELEMENTS

This chapter contains descriptions of various control elements of your POWERPLAY PRO. All controls and connections are discussed in detail. Additionally, useful advice about their possible applications is also given.

The HA8000 has eight independent amplifiers for connecting headphones, while the HA4700 has four. The latter has several additional features not found in the HA8000 due to space considerations. The differences between the two units are explained in detail in the text sections that follow.

2.1 Front panel

Fig. 2.1: Input section

The DIRECT IN socket is used to feed in additional stereo signals. In the case of the HA4700, the signal brought in via the DIRECT IN input has the same priority as the MAIN signal. The HA8000 has a separate DIRECT INPUT

connector for each channel (see fig. 2.3). In the case of this model, the MAIN signal being fed in is automatically interrupted when the said input is in use.

The MASTER LEVEL control governs the level of the input signal that is fed through the MAIN INPUT connectors on the back or through the DIRECT IN connector.

The HA8000 features two level controls (MAIN IN 1/ MAIN IN 2), so that two separately controllable input signals can be connected. You select which of the two signals is

monitored by using the IN 1/IN 2 switches in the respective channel sections.

The 4-digit INPUT LEVEL display informs you about the input level signal and diplays it in the range between -30 and 0 dB. When the unit is powered on, the ON LED lights up. You achive the best input signal quality when its level is at the highest level just before it starts distorting. The clip LED should light up only during the highest signal peaks.

Fig. 2.2: Individual headphones amplifier sections

The 8-digit OUTPUT LEVEL display informs you about the ouput signal level of each individual channel, and diplays it in the range between -30 and 0 dB. When the clip LED lights up, lower the amount of gain applied to the individual channels to avoid distortion.

The BASS control (HA4700 only) attenuates or boosts the low frequency portions of the signal (+/-12 dB).

4 2. CONTROL ELEMENTS