To take off the grey colored front panel, remove the two
screws highlighted in with a Philips screwdriver. The panel will
easily separate from the amplifier exposing the sponge-like air
filters.
Before replacing the front panel, remember to reposition the
air filter on the chassis by placing it on its designated area, then
reposition and tighten the two frontal screws.
8.2 Front panel adjustments
The front panel of M5000-4 amplifier has one stepped
attenuation pot for each channel. Turning the pot counterclockwise,
the user can modify the level of the input signal in steps corresponding
to a gain reduction ranging in:
-
∞
, 4, 14, 18, 20, 22, 24, 26, 28, 30, 32 dB.
8.3 Front panel monitoring
The M5000-4 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 the amplifier status.
There are two sets of LEDs on the M5000-4 front panel:
channel indicators and status indicators. 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 TABLE 1.
Channel indicators
LED
Color
Solid ON
Label
RED
Channel output level has
reached clipping limits
OR
Short circuit protection has
been engaged
CLIP
GREEN
Channel output level is above
-6 dB of max output level
-6 dB
GREEN
Channel output level is above
-18 dB of max output level
-18 dB
GREEN
Input signal presence
SIGNAL
Status indicators
LED
Color
Solid ON
Label
GREEN
Channel is ready
READY
YELLOW
Output power is being
reduced due to heat sink
*
temperature exceeding 75° C
TEMP
* Should the temperature exceeds 85° C, the LED will stay on and the channel will be muted.
The amplifier will resume normal functioning and the LED will turn off automatically when the
temperature falls below 75° C.
TABLE 1: M5000-4 LEDs chart.
8.4 Connecting audio inputs
Audio input connections are made via four 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 buttons allows to connect input
channels 1 and 2 (and/or channels 3 and 4) in parallel.
8.5 Connecting audio outputs
WARNING!
Lethal voltage levels may be present at the loudspeaker
connectors when the amp is turned on!
All output connections are made via speakON connectors.
Both bridge as well as single channel output connection modes
are available. In the single channel mode wiring, the 1+ pin of the
connector corresponds to the positive output of the channel, the
1– to ground (see FIGURE 9); for bridge mode refer to Section
8.5.2.
The M5000-4 amplifier manage bridge and single channel
mixed configuration; for example, channels 1 and 2 can be set
in bridge mode, and channels 3 and 4 single-ended.
M5000-4 amplifier is designed to be connected both to lo-Z
loudspeakers as well as hi-Z, 70V / 100V distributed lines directly.
8.5.1 Lo-Z and 70V/100V operations
High impedance loudspeakers can be paralleled in 70V/100V
distributed lines and directly managed.
High output voltage per channel g
uarantees direct connection
to hi-Z loudspeakers in a
line (see FIGURE 9).
8.5.2 Bridge Mode Connection
Bridge mode connection of outputs is possible only in lo-Z
operational mode. Bridging of adjacent channels is possible for the
following pairs: channels 1 with 2 and channels 3 with 4.
Bridging is NOT possible for other pairs, for example channels
1 and 3.
FIGURE 7: Unscrew and remove the front panel.
GND
Balanced input
Unbalanced input
COLD –
HOT +
1
2
3
GND
HOT +
1
2
3
FIGURE 8: Balanced and unbalanced input XLR connections.
TEMP
READY
SIGNAL
-18dB
6dB
CLIP
dB +32
8
-
dB +32
8
-
M5000-4
Outline s.r.l. - Via Leonardo da Vinci, 56 - 25020 Flero (Brescia) - Italy
Tel. +39-30-3581341 Fax +39-30-3580431 — Web Site: www.outline.it E-Mail: [email protected]
9
Professional Amplifier
M5000-4
