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The Impulse 115P has built-in EQ to extend and smooth the natural response of the woofer in any system.
Bass boost is applied and the system has a nominally flat response and should require little‚ if any‚
additional EQ. If excessive bass boost has been added externally to the Impulse 115P‚ it could cause
premature overload at very high SPLs. Reducing the amount of external (mixer‚ rack EQ) EQ should clear
up any distortion. If the
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function switch (7c) has been engaged‚ try bypassing it to see if that
clears up the distortion.
If you are using additional speakers connected to the Left and Right outputs (9)‚ ensure they 8 ohm
minimum impedance. Remove the speakers temporarily to determine if this is the source of distortion. If
the distortion is emanating from the Left and Right speakers‚ the total capacity of the Impulse 115P or the
speakers has possibly been exceeded. Reduce the drive level and re-check the speakers for impedance
(8 Ohm minimum).
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Your Impulse 115P is a sturdy and durable product which will provide years of reliable use if properly cared
for. Use common sense and read the safety warnings to avoid hazardous operating conditions. The unit
must be disconnected from the AC power source before any maintenance is performed. Please refer all
service issues to qualified service personnel.
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Avoid prolonged exposure to direct sunlight as this may cause the unit to overheat and thermally shut off.
Excessively hot operating conditions can also cause a thermal shut down.
Do not store in extremely hot or cold conditions or extremely high humidity.
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Never clean the Impulse 115P while plugged in or turned on. Once the unit has been completely
disconnected from AC power sources‚ a dry cloth may be used to remove soil or other dirt. Never use
strong solvents on the Impulse 115P. Do not allow any fluids to drip inside the Impulse 115P.
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If the Impulse 115P becomes scratched or abraded‚ it can be touched-up using a black paint pen or a black
permanent marker. If the grill becomes discolored or dirty‚ a mild household cleaner may be used to clean
the grill. If the grill becomes scratched‚ an appropriate mix of silver and black paints may be used to
restore it. Always try to touch up any grill scratches that penetrate to the metal immediately. This will help
prevent any rust from occurring.
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After the first few months of use and periodically thereafter‚ check the hardware for tightness. Make sure
to check the rear panel screws and the baffle screws. The unit‚ in use‚ is subject to a great deal of
vibration which can cause the screws to loosen over time.