Alpine KTA-30MW Compact All-Weather Subwoofer Amplifier

Brand: Alpine
Model Number: KTA-30MW
UPC: 793276242099
Model Number: KTA-30MW
UPC: 793276242099

Alpine KTA-30MW Compact all-Weather Subwoofer Amplifier

  • Compact mono subwoofer amplifier
  • 200 watts RMS x 1 at 4 ohms (300 watts RMS x 1 at 2 ohms)
  • Dynamic Peak Power (DPP) circuit adds a burst of power
  • Class D amp technology
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Product Description

Features & Specifications



Alpine KTA-30MW Compact all-Weather Subwoofer Amplifier

Alpine KTA-30MW is a super-compact, weather-resistant mono power pack to drive a subwoofer (or two) in an open-air vehicle, such as ATV, side-by-side, motorcycle, or boats This Class D amplifier can be used with factory head units or aftermarket sound systems. Alpine KTA-30MW comes with a single harness with all of the power, input, and output connections, terminated with a water-resistant 26-pin connector.

Single brick size, hits you like a ton

Need power for a subwoofer but don’t have space for a big amp? Alpine’s KTA-30MW Tough Power Pack amplifier can put out up to 300 watts RMS to your sub. The amp’s compact, weather-resistant chassis and waterproof connector make it a great solution when you need bass amplification in your side-by-side, ATV, boat, motorcycle, Jeep, or convertible where contact with water and dirt become issues. And I’m not kidding when I say this amp is small — with about a 9″ x 4″ footprint, it’ll fit just about anywhere.

Special sauce

The KTA-30MW uses Alpine’s Dynamic Peak Power (DPP) technology to deliver a quick energy boost when needed, virtually doubling the amplifier’s output power on musical peaks. The gain and crossover controls sit protected behind a water-tight panel, so even a sudden downpour won’t spoil the fun.

Class D

Alpine KTA-30MW has a high-efficiency Class D digital circuit design. With Adaptive Feedback global modulation topology, the amp provides up to 100% more dynamic power when the music demands it.

Weather Resistant

The power pack is ideal for side-by-sides, boats, motorcycles, and other vehicles that may be exposed to the elements. The KTA-30MW has an IP66 weather-resistance rating for protection against moisture and dust.


The weather-resistant OEM-grade Tyco 26-pin connector is for all needed amp connections, including the following:

  • Power/Ground: The connector has 12″ 10-gauge power (red) and ground (black) pigtails. The red power wire has a large, in-line noise filter. There is no internal or in-line fuse, so you’ll need to add a 30A fuse near the battery’s positive (+) terminal.
  • Remote Turn-on: There are two remote leads on the connector. Connect the blue/white Remote Turn-on lead to the +12V remote turn-on or power antenna lead from the head unit. The solid blue Remote Out lead can be used to turn on additional amplifiers. If your head unit does not have an amplifier turn-on lead, see Alternate Turn-on Options (below).
  • Inputs: The amplifier will accept either line-level or speaker-level inputs. The amp’s input wires are color-coded twisted pairs with female RCA jacks. If your source unit has RCA outputs, you can simply connect RCA cables to the amp. If the source unit does not have RCA outputs, you can cut off the amp’s RCA jacks and splice the source unit’s speaker wires to the twisted pair inputs. (Color codes: Left: white, Right: gray)
  • Subwoofer Outputs: The connector has speaker output wires for two subwoofers. There are two brown wires (+) and two brown/black wires (-) for connecting one or two subwoofers. The amplifier will accept a 4″ or 2″ load.
  • Remote Bass Control: An RJ-25 phone-type connector is provided for an optional remote bass control. The Alpine RUX-KNOB.2 can be added, so you can control the output of the amplifier from the front of the vehicle. The connector has a waterproof, screw-on cap to protect it from the elements when not in use.
Brand Alpine   Model Alpine KTA-30MW
Product: Alpine KTA-30MW Compact All-Weather Subwoofer Amplifier

RMS Power Output (Watts x Channels) 200 x 1
Power at 2 Ohms (Watts x Channels) 300 x 1
Minimum Impedance Unbridged 2
Minimum Impedance 2
Best Frequency Response 20-400 Hz
THD at Rated RMS Power 1%
Signal to Noise Ratio 82 dB
Input Voltage 14.4v


Amplifier Class D
Low-Pass Crossover Frequency 50-400 Hz
Low-Pass Slope (dB/octave) 24 dB/octave
Bass Boost 0-12 dB
Bass Boost Frequency 50 Hz
Fan Cooled No
Fuse Rating 30
Speaker Level Inputs Yes
Preamp Outputs No
Width (inches) 9-3/16
Height (inches) 1-5/8
Depth (inches) 3-13/16

What's in the box

Alpine KTA-30MW Tough Power Pack owner's manual
Mono amplifier
14" Power/signal harness (26-pin connector on one end and bare wires + RCAs on other end)
4 Self-tapping screws (Length 3/4")
Connection sheet
Limited Warranty sheet
Thank you letter

Mobile Amplifier Channels

1 Channel (Mono)

Mobile Amplifier Class

Class D

Mobile Amplifier Features

Bass Boost, Low-Pass Filter, Speaker Level Inputs

Mobile Amplifier Fuse Rating


Mobile Amplifier RMS

151 to 200 watts

Mobile Min Impedance


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Alpine Canada 1 Year Limited Warranty


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