POWERPLAY PRO-XL HA4700/PRO-8 HA8000
The TREBLE control (HA4700 only) attenuates or boosts the high frequency portion of the signal
The L MUTE and R MUTE switches allow you to mute the respective input signal, so that only the remaining input signal is audible (HA4700 only).
The PHONES OUT connector is connected in parallel to
the output connectors 
located on the rear, presenting an easily accessible additional monitor option for individual channels. This function is particularly helpful when the unit is permanently installed in a rack.
The AUX IN input is used to mix an additional input signal into the MAIN IN or DIRECT IN connectors (HA4700 only). Should you want to use this option on a mono signal, we recommend using the
The
instead of a 
.
The BALANCE control (HA4700 only) regulates the stereo image of input signals, provided that the AUX IN input of one of the amp sections is not already in use. When the AUX IN section already has a signal assigned to it, the BALANCE control governs the ratio between MAIN IN (DIRECT IN) and AUX IN signal.
The HA8000 does not feature a BALANCE control.
Headphones volume of the individual amp sections is regulated using the OUTPUT LEVEL control. Both the left and the right channel are regulated simultaneously.
The POWER switch powers the POWERPLAY PRO on. You should always make sure that the POWER switch is in the “Off” position when initially connecting the unit to the mains.
+Please take note: Merely switching the unit off does not mean that it is fully disconnected from the mains. When not using the unit for prolonged periods of time, please unplug the unit’s power cord from the power outlet.
The MAIN IN 1 or MAIN IN 2 input signal is selected by using the IN 1/IN 2 switch. When the DIRECT INPUT of the channel has a signal assigned to it, you can hear the said signal only (HA8000 only).
When you depress the MONO switch (HA8000 only), the signal is played in mono. Singers in particular appreciate this function because a mono signal is much less distracting to listen to than a comparable stereo signal. A mono signal makes spacial orientation during live performances easier.
2.2 Rear panel
Power is supplied via an IEC connector. The matching cable is provided with the unit.
FUSE COMPARTMENT / VOLTAGE SELECTION. Before connecting the unit to a power outlet, please make sure that the selected voltage matches your local voltage. When replacing fuses, please make sure that you always use fuses of the same type. Some units allow for switching between 230 V und 120 V. Please note: when connecting a unit intended for the European market to a 120 V power outlet, you must also replace the factory fuse with a
The HEADPHONE OUT connectors of the individual amp sections are also used for connecting headphones (HA8000: PHONES OUTPUT). The HA4700 features two additional headphones connectors per channel located on the rear; the HA8000 has one.
Fig. 2.3: Mains supply, fuses compartment and
headphone outputs
Various input signals can be connected to the HA8000 by utilizing a separate DIRECT IN connection for each amp section, located on the rear. If a signal is fed into this connector, both MAIN IN signals will be muted.
These are the MAIN OUT connectors of the HA4700. The respective jacks and XLR connectors are wired in parallel. Via these connectors, you can link as many headphone amps as desired to allow for connection of additional headphones. The HA8000 has no MAIN OUT connectors. To connect additional units on a
Fig. 2.4: MAIN IN and MAIN OUT connectors
The MAIN IN connectors of the HA4700 come as balanced 1/4" TRS and XLR connectors.
The HA8000 features only 1/4" TRS connectors for MAIN INPUT 1 and MAIN INPUT 2.
3.APPLICATION GUIDELINES
3.1Using the MAIN IN connectors
Connect a program source with the MAIN IN connectors located on the rear, and connect your headphones to an amp section of your choice. Set the MASTER LEVEL and BALANCE controls (HA4700) in the center position. The MASTER LEVEL control is used to lower or raise the volume level of all headphones which receive signals via the MAIN IN inputs and/or the DIRECT IN input. In the case of the HA8000, MAIN IN controls 1 and 2 regulate the input level of two separate input signals. The indi- vidual OUTPUT LEVEL controls are used for adjusting the desired channel volume only.
3.2 AUX IN inputs (HA4700 only)
As a general rule, the AUX IN inputs are used to add an extra input signal to the main signal, whereby the respective BALANCE control regulates the relative ratio of those signals to one another.
3. APPLICATION GUIDELINES | 5 |