Event electronic 20/20 User Manual
Page 5
8
20/20
p
P
OWERED
M
ONITOR
C
ONNECTIONS AND
O
PERATION
Please refer to Figure 3.
1
C
HANNEL
A
The Channel A amplifier section powers the external passive
20/20 monitor through the A output connector.
2
C
HANNEL
B
The Channel B amplifier section powers the internal 20/20
monitor.
3
I
NPUT
C
ONNECTOR
This jack has gold plated terminals and accepts both XLR and
¼" input plugs wired either balanced or single-ended. A 3-conductor ¼" TRS or XLR
plug is necessary for balanced input connections, but unbalanced wiring can also use
either 3-conductor plug with the minus input left either unconnected or grounded. A 2-
conductor ¼" TS type plug will also work for unbalanced sources, which automatically
grounds the minus input. The input connector wiring is printed next to the connector
and is as follows:
NOTE: Use only good quality input connectors having industry standard sleeve
dimensions. Some consumer grade ¼" TRS plugs do not provide reliable connections
because of slight dimensional differences.
4
I
NPUT
S
ENSITIVITY
This control has a 20dB range and compensates for different
input signal levels. With the control at maximum, 1.1VRMS input will produce full
amplifier output. If too much input signal is present, the amplifiers may overload, in
which case the green LED at the front of the powered monitor will flash.
5
H
IGH
F
REQUENCY
T
RIM
Use this calibrated control to vary the 20/20p’s high
frequency output above 2.3kHz by
±
3dB to accommodate personal preferences.
6
L
OW
F
REQUENCY
T
RIM
The calibrated LF Trim filter permits adjustments for
personal preferences in any monitoring situation. The LF Trim filter is a shelving
boost/cut filter having effect at frequencies below 400Hz and fully engaged below
100Hz as shown on the rear panel filter tuning graph. When the LF filter is set to “0”,
the 20/20p produces flat LF response in the common “on the bridge or just behind the
console” speaker mounting location. Locating the monitors in-wall or in a corner may
require a reduction of low frequencies while free-standing in the open may require an
increase in low end output for proper tonal balance.
7
A O
UTPUT
Delivers 100 watts to the companion passive 20/20 monitor.
Use the speaker cable supplied to make this connection observing polarity
(red to red, black to black).
8
P
OWER
S
WITCH
1 = ON 0 = OFF
When amplifier power is on, the green LED at the front of the monitor will illuminate.
9
C
IRCUIT
B
REAKER
In the unlikely event of a protection or overload condition, the
circuit breaker may open. If this occurs, the center button will pop out. Turn off the
5
Power and reset the breaker by pushing the button back in. Reapply power. If the
breaker opens again you may have a problem requiring attention by qualified
service personnel. DO NOT OPEN THE AMPLIFIER. THERE ARE NO USER
SERVICABLE PARTS INSIDE.
10
P
OWER
C
ONNECTOR
This connector accepts the detachable linecord. Use the
linecord supplied with your monitors and make sure it is fully seated into the
Power Inlet connector. For safety reasons, do not attempt to defeat the linecord’s
ground connection.