Utility Function Connector; Remote Dc Level Control; Standby; Fault Logic Output - Ashly FA Series Operating Manual

FA Amplifier • Operating Manual
5.3

Utility Function Connector

5.3a

Remote DC Level Control

On the two-channel model (not shown),
each VC input controls its own channel. On
four channel models (shown), each VC input
controls a channel pair. The maximum volume
when using remote DC voltage control is set
by the front panel level knobs. See the diagram
above for proper wiring.
5.3b

Standby

This pin is used for
contact closure
control of standby
mode, placing the
amplifier into a low
power consumption
state. There is also a switch that sets standby
circuit polarity(see sec.
When the amplifier is put into standby mode
using the STBY contact closure, automatic
sleep mode wake-on-audio is disabled, and the
front panel power switch is also disabled.
5.3c

Fault Logic Output

In normal operation
the Fault output
pin remains high
(+3V). The Fault pin
transitions to logic-
low output (OV) if the
amplifier goes into protect mode. Use this pin
to drive an external logic monitoring device.
5.4

Balanced Input

A Euroblock
connector is used
for wiring a balanced
input. If using an
unbalanced signal
source, wire the input
signal to the (+) pin,
shield to (G), and also wire the (-) input pin to
ground. Maximum input level is +24dBu.
5.5

Speaker Outputs

Caution: Never connect a [+] or [-]
speaker output to external ground or
shared wiring panel. All speaker wire
connections must be made directly
to the Euroblock connector pins as
shown below:
5.2d).
Speaker connections are configured for
either high impedance output (Hi-Z), or
low impedance output (Lo-Z) using the DIP
switches as shown in
Lo-Z is for 4 Ohm or higher loads, Hi-Z is for 70V
or 100V loads.
Hi-Z (70V / 100V) speaker connections use
different Euroblock pins than Lo-Z. Be sure to
use the correct pin connections for Hi-Z or Lo-Z
applications as shown. The two innermost pins
are NOT USED.
Note: Output channel pairs on 125W models
utilize Power-Sharing, see power amp
specifications
5.6
Always use the AC cord provided with your unit
for connecting to AC power.
The amplifier will auto-detect AC voltage from
100-240VAC, 50-60Hz.
WARNING: Do not remove or lift the AC
connector ground.
section 5.2a.
for details.
AC Mains Connector
9