Polk Audio EX SERIES II - Manual (Page 7)

LOW FREQUENCY CUT-OFF FOR SYSTEMS WITH SUBWOOFERS
If you have a subwoofer in your system, you may want to decrease the amount of bass going
to your mid-range speakers. This will get you better midrange sound and increase the power
handling. There are two ways to roll off the bass before it gets to the mid-range speakers.
One way is to use a “bass blocker”, a capacitor placed in series with the main input. The
other route is to use an electronic crossover device which allows filtering below 100 Hz or so.
TECHNICAL ASSISTANCE OR SERVICE
If, after following the hook-up directions, you experience difficulty, please double check all
wire connections. Make sure that your electronic equipment is operating correctly by
hooking up another speaker to the speaker output. For example, if you are not getting
sound from the left channel speaker, connect the right channel speaker to the left output. If
you still get no sound from that side, the problem is in your amp or source electronics.
Should you isolate the problem to the speaker, contact the authorized Polk Audio dealer
where you made your purchase. Authorized Polk Audio dealers are the best source for advice
and assistance.
Polk Audio’s Customer Service Department at 1-800-377-POLK (7655) from 9am to 5pm,
Eastern Time, Monday through Friday. Please do not hesitate to call us if you have
questions about your speaker system.
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POLARITY / BLENDING
If it seems that the tweeters and mid/woofers are not “blending” or working together in
harmony, try changing the polarity of both the tweeters by reversing the positive (+) and
negative (-) tweeter wires at the crossover. Reversing the absolute phase of the tweeters may
help the blending or integration of the system components, particularly if the tweeters and
mid/woofers are far apart.
AMPLIFIER POWER REQUIREMENTS
Your speakers will work well with a variety of electronic components. As little as 20 watts per
channel will deliver adequate listening levels in most cars. If you have a noisy car or intend
to play your system at loud listening levels, more power is necessary to achieve the best
performance. Consult your Polk Audio dealer for specific recommendations.
SAFE LIMITS OF OPERATION
Your Polk loudspeakers are made with the highest quality materials for years of trouble-free
performance. However, damage to loudspeakers can occur when an amplifier, regardless of
its wattage, is made to play at higher listening levels than its power can clearly produce
(usually beyond the “1 to 2 o’clock” position on the volume control).
This results in very high levels of audible distortion, originating in the amplifier, which
adds a harsh, gritty sound to the music. Contrary to popular belief, a speaker is more likely
to be damaged by trying to get too much volume from a low-powered amp or receiver than
from a high-powered one.