INFINITY K1000 – 1000 WATTS MONO SUBWOOFER AMPLIFIER
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HIGH TECH AND STYLISH
Infinity’s Kappa K1000 mono subwoofer amplifier supplies your subwoofer with up to 1,000 watts RMS — good news for all you bass fans out there. The space age-looking brushed aluminum chassis features dancing, signal-level LEDs which add to the amp’s high-tech look and overall coolness factor.
CONNECTIVITY IS THE NAME OF THE GAME
This amplifier can accept low- or speaker-level inputs so it’ll work in almost any system. Infinity includes screw-on RCA-to-bare wire adapters with the amp to make sure you can make the proper connections. The Kappa K1000 sub amp will integrate perfectly into a system that uses a matching InfinityKappa K2 or Kappa K4 full-range amplifier with its handy Bluetooth® connection.
GOOD WITH BASS
A low-pass filter clears the way for your sub to play clean, powerful bass. The Kappa K1000 subwoofer amp also features Infinity’s Dynamic Bass Optimizer (DBO™) circuitry, which uses a subsonic filter and bass boost to optimize the performance of your sub and enclosure combo.
Kappa K1000 input and control panel
FEATURES AND SPECS
|RMS Power Output (Watts x Channels)||700 x 1|
|Peak Power Output (Watts x Channels)||2600 x 1|
|Power at 2 Ohms (Watts x Channels)||1000 x 1|
|Bridged Power (Watts x Channels)||N/A|
|Minimum Impedance Bridged||N/A|
|Minimum Impedance Unbridged||2|
|Best Frequency Response||0 Hz|
|THD at Rated RMS Power||0.1%|
|Signal to Noise Ratio||80 dB|
|Low-Pass Crossover Frequency||32-320 Hz|
|Low-Pass Slope (dB/octave)||12 dB/octave|
|High-Pass Crossover Frequency||N/A|
|High-Pass Slope (dB/octave)||N/A|
|Bass Boost||0-12 dB|
|Bass Boost Frequency||45 Hz|
|Speaker Level Inputs||RCA|
|Parts Warranty||1 Year|
|Labor Warranty||1 Year|
Overview: The Infinity Kappa K1000 is part of the Kappa series of high-performance amplifiers. This Class D mono subwoofer amplifier will accept both high-level and low-level inputs. Class D amplifiers are highly efficient and compact, generating a lot of power without drawing much current or generating heat. The amp comes with spare fuses, speaker wire-to-RCA adapters, and mounting hardware.
Power Output: The Kappa K1000 delivers the following power output:
- 700 watts x 1 at 4 ohms (<0.1% THD+N)
- 1000 watts x 1 at 2 ohms (<0.1% THD+N)
Protection Circuitry: The amplifier features protection circuitry for thermal overload, over- or under-voltage (<9V or >16V), and short circuits. The LED on the top of the amp glows red if the amp goes into protection mode.
Controls: The Kappa K1000’s controls are located on one side of the amplifier. The rotary controls require a small screwdriver (not included) to make adjustments. The amp controls include:
- Gain: The rotary gain control let you match the amp’s input sensitivity to the output of the source unit. The input sensitivity range of the amplifier is 0.2V and up for a low-level input, and up to 20V for speaker-level input.
- Input Level: The Input Level switch lets you select the type of input you are using. For high-level input, there are two settings: Hi1 and Hi2. If the audio system fails to play with an amplifier connected to its output, or you get a “speaker disconnected” message on your factory stereo, set the switch to the Hi2 position. The Hi2 position includes a circuit design to fool this type of factory system into “seeing” a speaker connected to its output.
- Crossover: The amp features a non-defeatable low-pass filter that determines the upper limit of the frequencies that are sent to the subwoofer. You can adjust the cutoff frequency of the low-pass filter from 32Hz to 320Hz using the rotary control.
- Bass Boost: The Kappa K1000 has a variable 0-12dB bass boost, centered at 45Hz. This allows you to dial in the amount of bass according to your personal taste.
- Subsonic Filter: The amplifier has a subsonic filter that eliminates super-low frequencies that rob amplifier power and can damage speakers. This high-pass filter is variable from 10Hz to 80Hz, and has a 12dB/octave slope.
- Phase Switch: The amp has a 2-way Phase Switch that lets you invert the phase of the speaker output by 180°. When the subwoofer is out of phase with the other speakers in the vehicle, sound waves cancel each other and the bass response suffers. If the bass response is poor, inverting the phase of the subwoofer may improve it.
Connections: The Infinity Kappa K1000 uses set screw terminals for the +12V power, ground, turn-on (remote) lead, and speaker outputs. The screws can be tightened/loosened with a Phillips-head or flat-head screwdriver (not provided). The amp connections include:
- Power/Ground: The +12V Power and Ground terminals will accept up to 4-gauge wire. It is recommended that you use a minimum of 4 AWG power wire to the battery, with an in-line 100A fuse (or higher) installed no more than 18″ from the battery terminal. A 4 AWG ground wire (minimum) is also recommended, and attached to a metal area close to the amplifier.
- Remote Turn-On: The Remote screw terminal will accept up to 8 AWG wire. Typically, an 18 AWG turn-on lead is included in an amplifier wiring kit.
- Speaker Outputs: The amp features screw terminals for connecting two speakers. The terminals are wired internally in parallel. The amp’s minimum speaker impedance is 2 ohms, so you can connect one or two 4-ohm subwoofers, a 2-ohm subwoofer, or one subwoofer with dual 4-ohm voice coils.
- Speaker-Level Input: The amp includes two bare wire-to-RCA adapters for connecting the amp to a factory radio or aftermarket head unit without preamp outputs. You should attach the left and right speaker wires from the head unit to each adapter and plug the adapter’s RCA plug into the amp.
- Line-Level Inputs: The amplifier is equipped with one pair of RCA inputs for connecting stereo RCA patch cables from the head unit to the amp. If your source unit only has one subwoofer output, a “Y” adapter should be used to split the mono signal into two outputs.