IX254, IX404, IX704
Four-Channel Power Amplifier
Congratulations! You have just purchased one of the latest in a long line of exceptional car audio power amplifiers from Stillwater Designs. Your KICKER Impulse was designed and engineered by the same team which created many other international award winning KICKER components like the ZR, ZX, and XS-Series amps. It contains a number of cutting-edge features to give you outstanding performance
Thanks for buying KICKER. Enjoy.
KICKER IMPULSE AMPLIFIER FEATURES
A set of RCA output jacks on your KICKER Impulse four-channel amplifier allows you to build multiple amplifier systems without using RCA splitter cords to distribute the signal. Now it is simply a matter of bringing one set of RCA cables into the first amplifier, then using the output RCA jacks as a feed to the next amplifier. A rear channel input switch allows four-channel output operation from either one or two inputs.
Amplifiers are stable at 2 Ohms stereo and as low as 4 Ohms in mono.
Input connections are included for high and low level signals for use with radios that have either RCA or speaker level outputs.
An electronic crossover is built in for convenience and allows you to select high pass for satellite speakers, low pass for subwoofers, or bypass for full range operation. In full range configuration the KICKER Impulse amplifiers will operate stereo and mono and at the same time.
Auto-resetting short circuit and overthermal protection circuits are incorporated to protect the amplifier from failure due to extreme conditions.
State of the art circuit including MOSFET power supply and glass epoxy circuit boards are used to ensure many years of trouble free operation.
Wiring Instructions
The preferred method of bringing input signal in to the amplifier is with RCA cables from a quality tape or CD player. A high (speaker) level input signal may also be used if your factory deck or aftermarket source does not have low level RCA jacks. Regardless of which input is used the output RCA jacks on your KICKER Impulse amplifier will provide a low level signal for multiple amplifier configurations.
Some of the system possibilities are shown in the System Diagrams section of this manual.
When working with power connections always hook up the ground wire first and disconnect the ground wire last. Never make any wiring changes with the amplifier powered up.
The chassis mounted fuse(s) are in place to protect the circuitry of the amplifier in the event of major trouble. An in-line fuse must be installed within 18 inches of the battery to protect the power wire used to supply current to the amplifier. This fuse has to be at least as high of a value as the amplifier is supplied with. In-line fuse and recommended wire size are as follows:
IX 254 |
10Ga |
10A fuse |
IX 404 |
8Ga |
30 A fuse |
IX 704 |
4Ga |
60A fuse |
Any time that power wire goes through a metal panel such as the firewall, or if there is any chance of abrasion, it is necessary to use a grommet or other suitable form of protection to avoid shorts.
The ground wire should be as short as possible and attached to the body of the vehicle. The ground point must be free from paint and corrosion. Use the same size wire for ground connection as is used for power.
Mounting the IMPULSE Amplifier
After determining an appropriate mounting location which provides good air circulation and access to the end panel controls, use the supplied screws and washers to firmly mount the amplifier. The amplifier chassis can be used as a template for the screw locations. Check to make sure that the mounting screws will not damage any components on the back side of the chosen mounting surface.
If a vertical mounting surface is chosen, we recommend that the heatsink fins run vertically as shown for improved cooling.
For chassis isolation and to prevent engine noise from entering your system, it is important to use the plastic stepped washers and rubber isolators when mounting this amplifier.
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Input Options for the IMPULSE Four-Channel Amplifiers
The Rear Input Selector switch allows you to select one or two inputs (low level or high level).
Input Option 1: Using One Pair of RCA Cables
Set to 'ON' for 4 channel output from single input
SOURCE RCA INPUTS
Input Option 2: Using Two Pairs of RCA Cables
Set to 'OFF' for 4 channel output from two inputs
SOURCE RCA INPUTS
Input Option 3: Using Stereo Pair of High Level Inputs
L +- 
-
R +
HIGH LEVEL INPUT
Set to 'ON' for 4 channel output from single input
Input Option 4: Using Two Stereo Pairs of High Level Inputs
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HIGH LEVEL INPUT |
HIGH LEVEL INPUT |
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Set to 'OFF' for
4 channel output 3 from two inputs
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