Crown Audio P.I.P.-ATNJ - Manual (Page 4)

Page 4
P.I.P.–ATNJ
Reference Manual
Fig. 2.3 Installation into a
Standard PIP Amplifier
Fig. 2.1 Constant-Directivity Horn
Equalization (with RFI filter)
Fig. 2.2 Subsonic/Bass Filter Settings
2 Installation
Before installing this PIP module, it will
need to be configured. The first two
steps in the installation procedure fo-
cus on this. A phillips screwdriver is
required.
CAUTION: Before installing this or any
PIP in your amplifier, it is important to
turn down the amplifier’s level controls,
turn off the amplifier and disconnect the
AC power. Even though the amplifier is
off, there could still be enough energy in
the circuitry to cause electric shock.
Please note: The RFI filter is always
on—it cannot be switched off.
1. Adjust the constant-directivity
equalization jumper of each chan-
nel to be ON or OFF (see Figure
1.2). Figure 2.1 shows the fre-
quency response through the P.I.P.–
ATNJ when this filter is on.
(Flat, 50 Hz, 100 Hz, 300 Hz).
3. Turn the Attenuator controls of the
P.I.P.–ATNJ full counterclockwise to
∞
(full or infinite attenuation).
4. Turn down the amplifier level con-
trols (fully counterclockwise), turn
off the amplifier, and unplug it from
the AC power source.
5. Remove the existing PIP module or
panel (two screws). For PIP2 ampli-
fiers, this may involve disconnect-
ing the PIP from a PIP2 input
adapter (see Figures 2.4 and 2.5). If
a PIP2 input adapter is already
present, do not remove the ribbon
cables from the adapter. Otherwise
you will have to reconnect them in
the next step.
6. Standard PIP Amplifiers: Align the
edges of the P.I.P.–ATNB in the PIP
card rails and firmly push the unit in
until it is seated against the mount-
ing bracket (see Figure 2.3).
2. Select the desired position for the
Subsonic/Bass filter switch for each
channel. Sliding the switch to the
FLAT position switches off the filter.
The switch positions are identified
on the circuit board between the two
switches (see Figure 1.2). Figure
2.2 shows the frequency response
through the P.I.P.–ATNJ when this
filter is set in each of its four modes