Front Panel Adjustments; Front Panel Monitoring; Rear Panel; Connecting Audio Inputs - powersoft M50Q HDSP+ETH User Manual

M Series User Guide
1. remove the two screws highlighted in FIGURE 11 with a
Philips screwdriver. The panel will easily separate from the
amplifier exposing the sponge-like air filters.
To reposition the front blue colored panel:
CLIP
6dB
-18dB
SIGNAL
- +32 - +32
dB dB
TEMP
READY
FIGURE 11: Screws to be removed in order to access the air filters
behind the front panel
1. before replacing the front panel, reposition the air filter on
the chassis by placing it on its designated area
2. reposition and tighten the two frontal screws.

5.3 Front Panel Adjustments

The front panel of all M Series amplifiers has one stepped attenuation
knob for each channel. Turning the knob counterclockwise, the
user can select the amplifier's gain value in steps corresponding
to the following values: -∞, 4, 14, 18, 20, 22, 24, 26, 28, 30, 32 dB.

5.4 Front Panel Monitoring

The M Series front panel provides important information on the
state of the amplifier. It is important to know and understand the
meaning of every front panel indicator LED in order to have crucial
information on what's going on and what could be going badly
with the amplifier.
There are two sets of LEDs on the M Series front panel. There are
Channel indicators and Status Indicator LEDs. Channel indicators:
each channel has its own column set of 4 LEDs. The top LED
is red, and the following three are green. Status indicators: each
channel pair has one set of two green status indicator LEDs.
The function of both families of LEDs is summarized in the
following chart:
11
▶
LED Color Solid color
Channel indicators
Channel output level has reached
clipping limits
Red
Short circuit protection has been
engaged
Channel output level is above -6 dB of
Green
max output level
Channel output level is above -18 dB
Green
of max output level
Green Signal is present at amplifier output
Status indicators
Green Channel is ready
Output power is being reduced due
Yellow to heat sink temperature rising above
75° C
Should the temperature increase beyond 85° C, the LED will stay on and the channel
1
will be muted. The amplifier will resume normal functioning and the LED will turn off
automatically when the temperature falls below 75° C.
FIGURE 12: Front panel LEDs chart

5.5 Rear Panel

The rear panel of the M Series with optional DSP has a 4-green-
LED column per channel pair. The LED lights to indicate which
preset is active for that specific channel pair. Preset parameters
are defined, set and modified by connecting the M Series amplifier
with optional DSP to a computer running the Armonía Pro Audio
Suite. In case of a 4-channel amplifier (MxxQ models), the first
LED column indicates the selected preset active on channels 1
and 2, while the second column refers to the preset selected
for channels 3 and 4. A signal can be sent remotely to the amp
to force all preset LEDs to blink for 30 s; this can be useful in a
situation where many amplifiers are networked together and it is
necessary to identify which amplifier responds to which particular
network address.

5.6 Connecting Audio Inputs

5.6.1

MxxD Models

Audio input connections are made via two XLR connectors found
on the rear of the amplifier. Signal looping (i.e. link thru) is possible
using the two XLR male connectors which are also found on
the back panel. The Link on/off button allows to connect input
channels 1 and 2 in parallel.
GND
IN (-)
IN (+)
Balanced Input
FIGURE 13: Balanced and Unbalanced connections on input XLR
Front panel label
OR
CLIP
-6 dB
-18 dB
SIGNAL
READY
TEMP
1
/
GND
IN (+)
Unbalanced Input