Rear Panel; Audio Inputs; Loudspeaker Outputs - Lab.gruppen E SERIES Quick Start Manual

Rear panel

Important note on Auto Power On/Off – All E Series amplifiers
include an Auto Power Down/On (APD) scheme. As shipped
(factory default), the amplifier will go to low power standby mode
when no signal is present for 20 minutes. It will return to power
on mode when signal exceeds the signal present threshold. For
information on calibrating the signal present threshold, please refer
to the Operation Manual.
Power button and indication - When pressed momentarily,
toggles power state between standby and on. Indicator shows
amber for standby and green for on.
Attenuators - Range is 0 dB to -infinity; vertical is -10 dB. Amplifier
sensitivity is 4 dBu with attenuator at 0 dB and 14 dBu at -10 dB.
SIG - Illuminates green when input signal above Signal Present
Threshold (SPT). For adjustment of SPT value, please refer to the
full Operation Manual.
High-pass / Full-range – Selects flat or high-pass filter at 50 Hz.
70 V / Lo-Z – Selects settings for the Rail Sensing Limiter (RSL).
The 70 V position should be selected for constant voltage systems
and for full rated power into 8 or 16 ohm loads. The Lo-Z position
should be selected for full power into 2 or 4 ohm loads, or for limiting
maximum output into 8 or 16 ohms. For information on RSL settings
for asymmetric loading, please refer to the Operation Manual.
GPIO – GPIO allows use of external relays for power on and off.
See the Operation Manual for information on configuring GPIO.

Audio inputs

Audio inputs are electronically balanced and use three-pole
Phoenix-type connectors. Follow the +, - and Ground labels
when making connections.

Loudspeaker outputs

Loudspeaker outputs use detachable block-type connectors.
Maximum connector current rating is 41 Arms (exceeding capacity
of the amplifier). Cables up to 4 mm
Observe polarity to avoid low frequency cancellation loss.
6
(12 AWG) can be accommodated.
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