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Inputs and Outputs
Overview: This package includes
a KFC-W250MRW dual voice coil marine subwoofer and a KAC-210MR mono amplifier
designed for use with the subwoofer.
UV and Water Resistant:
The subwoofer features a UV-resistant white grille, waterproof
pearl mica polypropylene cone, rubber surround, and stainless steel mounting
hardware. The tinsel leads are coated and the speaker terminals are
gold-plated to guard against corrosion. The amplifier has a special coated
circuit board to protect it against the marine environment.
Free-Air Subwoofer Design: The
woofer is designed for mounting in an infinite baffle (free-air) application, so
no enclosure is necessary.
Vented Voice Coil:
The subwoofer's vented voice coil allows air to circulate in the voice coil gap,
helping dissipate heat, resulting in greater power handling and increased
Subwoofer Mounting: The
measurements in the Crutchfield database are taken without the grille. With the
grille installed, the mounting height increases to 0.983" and the frame diameter
increases to 10.766".
Matching Amplifier: The KAC-210MR mono amplifier is a special
amplifier designed to handle the low impedance load of the subwoofer. The
subwoofer has dual 1.5-ohm voice coils, and when connected in parallel to the
amplifier, present a 0.75-ohm load to the amp.
Fixed Input Sensitivity: The amp has a fixed input sensitivity of 60mV
(0.06 volts). There is no gain control on the amplifier.
Note: In order to control the volume of the subwoofer relative to the
rest of the system, you will need a head unit with a variable volume control
on the subwoofer preamp output, or an external remote level control (such as
Low-pass Filter: The amplifier has a low-pass filter with a fixed
cutoff frequency of 80Hz.
Inputs and Outputs
10-pin jack for use with the supplied Connector cord
- Subwoofer Output: 4-pin
jack for use with the supplied Speaker cord
- Line In: Stereo
RCA audio jacks
- Maximum Output: 200 watts
- Signal-to-Noise Ratio: 85
- Low-pass Filter Frequency:
- Sensitivity/Input Impedance: 60mV / 10 kΩ
- Output Impedance: 1.5 Ω + 1.5 Ω = 0.75