3
Tech Note: The transition from the unaffected frequencies to the affected
region is faster. This is illustrated in the figures. One key benefit to the 2 pole
controls is that usually the desired frequencies can be affected without causing
an increased boost at other frequencies resulting in feedback.
Note: The E10P will work more effectively if large EQ boosts are avoided. This is
a general rule-of-thumb for speakers, not something solely related to the E10P.
7. Live/Playback Mode Pushbutton Switch
This switch selects between two EQ presets, Live and Playback. The Live preset
provides optimal response throughout the vocal and instrumental range of frequencies
and is best for reproduction of live music. For pre-recorded music, select the Playback
setting which de-emphasizes the mids. Feel free to experiment in either case.
Tech Note:The live/playback switch also changes the limiter operation. In the
live mode the horn and woofer limiters operate independently. This allows
each driver to reach maximum power before limiting. In the playback mode
an additional limiter is located before the crossover. This keeps the sound
in balance as the limiting increases. When operating in limiting the horn is
typically louder in the live switch position. When reproducing prerecorded
(or heavily processed) music along with significant equalization, placing the
switch in the live position may improve the sound quality.
Note: The Live/Playback Mode switch affects the tone control characteristics,
see section 6. Tone Controls for more information.
8. Clip and Limit Indicators
The Clip and Limit LED indicators illuminate to guide the user to proper operating levels.
The red Clip LED indicates that the input level is excessive and further in-
creases in level will cause severe distortion. This happens at a very high input
signal level. The mixer’s level settings should be reduced immediately until Clip
activity ceases. Illumination of the yellow Limit LED indicates that a level has been
reached where the E10P limiters are reducing the signal internally to prevent dam-
age or distortion. It also indicates that further increases in input level or increasing
the E10P Level control position will not appreciably increase acoustic output.
Note: Operation well into limiting may result in feedback if the level is
reduced. What happens is the limiters stop working and the E10P’s gain
goes back up. However, it should be noted that normal operation at full-power
is indicated by the Limit LED being lit occasionally.
9. LF Rolloff Pushbutton Switch
The LF Rolloff switch selects a high-pass (low-cut) frequency of either 65 Hz or 100 Hz.
When using the E10P without a subwoofer, it’s best to select 65 Hz. When using the
E10P with a subwoofer, select 100 Hz. Most powered subs have their low-pass filter set at
around 100 Hz. If yours is variable, set it at 100 Hz for use with the E10P.
