Ashly PE-3800 Betriebshandbuch - Seite 7
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Operator Manual – PE Series Amplifiers
Operation
The amplifier's On/Off Switch is a rocker-type switch located on the left side of the front panel.
Turning on the amplifier initiates start-up by activating the inrush current limiter. During power
up, the Clip/Mute, Standby and Protect LEDs from both channels will light up for a few seconds.
When using the remote On/Off function, the main On/Off switch must remain in the On position.
See page 11 for more information on remote On/Off connections.
NOTE: The power switch does NOT isolate the appliance from mains. As soon as the unit is
connected to the mains power supply, a voltage is supplied to both the line-filter and the fused
input of the controllable rectifier. If a power interruption occurs while the unit is switched on, it
will restart automatically when power is restored and all settings will be maintained.
2 Channel (Stereo) Mode
In this mode, the amplifier's two channels operate fully independent of each other. Each signal
enters the unit and is amplified separately.
Parallel-Mono Mode
In this mode, a single input signal (connected to channel 1) is connected to the two output
channels. The output terminals of the two channels are configured in parallel using an internal
relay. The (single) load is connected either to the output of channel 1 or to that of channel 2 (as
if in stereo). While the total output of the amplifier remains the same and the output voltage
level is also the same as in stereo operation, the minimum impedance that can be connected is
reduced by half because the current capability is doubled. Only the Channel 1 attenuator is
active. The Channel 2 attenuator should be turned down to zero. This mode is useful when
identical loudspeakers are to be operated with the same power.
IMPORTANT: When connecting speaker cabinets in parallel, always use all the contacts in
both SPEAKON connectors. If not, this can cause permanent damage to the connectors and
considerably reduce performance.
Bridged Mono Mode
In this mode, a single input (connected to channel 1) is connected to the two output channels
that have been 'Bridged" together. Each output channel processes the signal, but the polarity of
channel 2 is reversed. The (single) load is connected between the two positive channel outputs
using a suitably connected SPEAKON connector. While the total output of the amplifier
remains the same, both the available output voltage and the minimum impedance that can be
connected are doubled, as compared with stereo operation. Only Channel 1 is active. A signal
feeding Channel 2 will have no effect on the output. Turn the attenuator of Channel 2 down to
zero.
WARNING! In Mono-Bridge mode RMS output voltages as high as 230 V. Wiring to the
speaker loads must conform to NEC Class 3 safety standards or its equivalent. All customer
specific cables should only be manufactured by qualified personnel.
All Rights Reserved
Page - 7
Introduction - 2
The PE Series - 3
Physical Description - 4
Installation – 5
Operation – 7
2 Channel Mode
Parallel Mode
Bridged Mode
Troubleshooting - 8
Spec Table - 9
Measurements - 10
Dimensions - 11
Warranty - 12