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Kicker 49ST4TW ST-Series single 1-1/2" aluminum dome bullet tweeter — designed for SPL-level competition

Item # 20649ST4TW

Kicker's "Livin' Loud" mantra is in full effect with this Street Series 49ST4TW 1-1/2" bullet...

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Kicker's "Livin' Loud" mantra is in full effect with this Street Series 49ST4TW 1-1/2" bullet...

Item # 20649ST4TW

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  • Free lifetime tech support
  • 60-day price-drop protection
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About the Kicker 49ST4TW

Alexander H.

Product highlights:

  • one 1-1/2" aluminum dome bullet tweeter
  • designed for SPL competition
  • handles up to 50 watts RMS (100 watts peak)
  • high-pass crossover point: 8500 Hz at 6 dB per octave
  • frequency response: 3,000-20,000 Hz
  • impedance: 4 ohms
  • sensitivity: 108 dB
  • top-mount depth: 2.27"
  • cutout diameter: 1.9"
  • frame diameter: 2.875"
  • warranty: 2 years
  • MFR # 49ST4TW
  • Item # 20649ST4TW

What's in the box:

Kicker 49ST4TW owner's manual

If you need assistance accessing this owner's manual, please give us a call.
  • One ST4TW Tweeter
  • Round threaded mounting flange (installed)
  • Square threaded mounting flange
  • Threaded backing nut (installed)
  • Capacitor (in-line crossover)
  • Resistor
  • Four 1-1/8" Screws (3mm Allen head)
  • Template

More details on the Kicker 49ST4TW

Pat M.

Product Research

Features

Mounting: The tweeter is designed to be flush mounted from the bottom, with the mounting surface sandwiched between the included backing nut and threaded mounting flange (round or square). The square mounting flange also has screw holes for mounting. The threaded shaft is approximately 1⅛" tall, so the tweeter can be positioned within a range of depth/mounting height combinations.

Measurements:

  • Required Cutout Diameter: 1.9" (compatible with 2" hole saw bit)
  • Mounting Depth: 1.3" (minimum) -2.27" (maximum)
  • Frame Diameter: 2.875"
  • Round Mounting Flange:
    • Diameter: 2.955"
    • Height: 0.23"
  • Square Mounting Flange:
    • Sides: 3.35" x 3.35"
    • Height: 0.225"
  • Backing Nut:
    • Diameter: 2.71"
    • Height: 0.2"

Terminals: The tweeters have spring post wire terminals and will accommodate up to 16-gauge wire.

Crossover: The included 4.7 μF capacitor is 1st a order high-pass crossover (6 dB/octave slope) and must be used if no other crossover is added; the crossover point is approximately 8.5 kHz. The capacitor is wired in-line with the positive input of the tweeter. The capacitor measures ⅝" diameter x 1¼" long. When used, the capacitor should be soldered into speaker wire and insulated with heat shrink.

Resistor: If the tweeter is too loud, add the included 8Ω resistor in-line with the positive input of the tweeter. The resistor measures ⅜" square x 1⅞" long. When used, the resistor should be soldered into speaker wire and insulated with heat shrink.

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Customer Q&A

1 question already asked

Q
Do these have inline or integrated high pass filters?
brandon  Apr 03, 2023
1 answer
A
Greetings Brandon, and thank you for your question. We will have more information posted as soon as we do the research to these. They just came in, but for now, there is no filter, or crossover included with these tweeters. They recommend filtering these at 5,000 Hz.
thomas  Apr 03, 2023 (Staff)

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Kicker 49ST4TW
$99.99 each
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