Polk Audio EX SERIES II - Manual (Page 6)

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The Polk EX2500 tweeter offers two mounting options for installation flexibility.
Mounting Option #1 – Surface mounting the EX2500 Tweeter
1. Using the base of the surface mount cup as a template, mark the two screw holes and
drill using a 1/8 inch drill bit. Drill a third hole (for the speaker wire) using the 1/4
inch drill bit.
2. Attach either surface mount cup (angled or straight) to the panel using #8 screws of
appropriate length for the panel.
3. Push the tweeter wires through the open area at the bottom of the cup and through
the 1/4" hole in the panel.
4. Connect wires from the tweeter terminals of the crossover, to the tweeter wires, using
the faston connectors. Connect the red wire strand to the (+) terminal of the
crossover tweeter output and to the red wire on your tweeters.
5. Mount the tweeter by snapping it into the mounting cup and turning the tweeter
clockwise, locking the tweeter in place.
Mounting Option #2 – Flush mounting the EX2500 Tweeter
1. Remove the panel on which you are going to mount the tweeter and check for proper
clearance behind it. The flush mount kit is 1/2 inch deep. Measure to make sure
there is sufficient depth behind the spot you choose.
2. Mark the center of the spot and cut a hole with the 1 3/4 inch hole saw attachment
for your power drill. Go slow. You can use a razor knife instead of a drill if you prefer.
3. Assemble cup, clamp, and machine screws loosely as shown in Figure 4.
4. Route wires through the round opening in the bottom of the cup.
5. Press the assembly into the 1 3/4 inch hole until the clamp edge is below the
mounting surface, then tighten the screw. The cup will clamp down to the surface as
the screw is tightened. In the case of a thick mounting surface, the legs of the clamp
can be bent outward by inserting a screwdriver through the holes in the cup while
still mounted.
6. Connect wires from the tweeter terminals of the crossover, to the tweeter wires, using
the faston connectors. Connect the red wire strand to the (+) terminal of the
crossover tweeter output and to the red (+) wire on the tweeter.
7. Mount the tweeter by snapping it into the mounting cup and turning the tweeter
clockwise, locking the tweeter in place.
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EX2500 Component Tweeter Hook-up
When purchased as a separate unit, the EX2500 tweeter includes a first order (6dB/octave)
crossover network integrated into the tweeter assembly. This high pass filter allows the
EX2500 to be used with other components. It is important to maintain correct polarity. The
red wire connects to the positive (+) amplifier terminal and the black to the negative (-)
amplifier terminal.
If your system contains an active crossover, you may bypass the in-line crossover and wire
the tweeter directly to the output terminals of an amplifier which has a high pass filter
(crossover) on its input. The minimum crossover point should be 2 kHz at 12dB per octave.
DO NOT USE THE TWEETER WITHOUT A CROSSOVER NETWORK. Damage to the tweeter
from thermal overload will result without the protection provided by a crossover and will
void your warranty.
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PANEL
PANEL
TWEETER
MOUNTING SCREW
RETAINING
BRACKET
FIG. 4
FLUSH
MOUNT CUP