Behringer POWERPLAY PRO-XL HA4700 [4/10] Introduction
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Behringer POWERPLAY PRO-XL HA4700 [4/10] Introduction

Behringer POWERPLAY PRO-XL HA4700 [4/10] Introduction
4 POWERPLAY PRO-8 HA8000/POWERPLAY PRO-XL HA4700 User Manual
1. Introduction
Congratulations! With the BEHRINGER POWERPLAY PRO, you have acquired a high-
end headphone amplier. Both POWERPLAY PRO units were developed with the most
demanding applications in mind: professional recording, radio and television studios,
as well as CD/digital sound production. They were developed as benchmark units
for judging mixdown quality as well as distribution ampliers for exible playback
applications in studio environments.
Balanced inputs and outputs
Both BEHRINGER POWERPLAY PROs feature electronically servo-balanced inputs
and outputs. The servo function automatically recognizes when unbalanced pins
are assigned. It internally modies the nominal signal level, thus preventing any
occurence of signal level dierence between inputs and outputs (6 dB correction).
◊ The following user's manual is intended to familiarize you with the
unit's control elements, so that you can master all the functions. After
having thoroughly read the user's manual, store it at a safe place for
future reference.
1.1 Before you get started
The POWERPLAY PRO was carefully packed at the assembly plant to assure secure
transport. Should the condition of the cardboard box suggest that damage may have
taken place, please inspect the unit immediately and look for physical indications
ofdamage.
◊ Damaged units should NEVER be sent directly to us. Please inform the
dealer from whom you acquired the unit immediately as well as the
transportation company from which you took delivery of the unit.
Otherwise, all claims for replacement/repair may be rendered invalid.
1.1.1 Initial operation
Please make sure the unit is provided with sucient ventilation, and never place the
POWERPLAY PRO on top of an amplier 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.
1.2 Warranty
Please take a few minutes and send us the completely lled 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.
1.3 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 oers 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 specic topics not covered in this manual, please visit our website
at www.behringer.com. For example, additional information about power amps and
eects 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 ampliers for connecting headphones, while the
HA4700 has four. The latter has several additional features not found in the HA8000
due to space considerations. The dierences between the two units are explained in
detail in the text sections that follow.
(3) (3)
(1) (2) (2)
HA4700
HA8000
Fig. 2.1: Input section
(1) 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 (19) (see g. 2.3). In the case of this model, the MAIN signal being fed in is
automatically interrupted when the said input is in use.
(2) 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 (14) in the respective
channel sections.

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