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Pair of black 1.5 inch bullet tweeters with aluminium domes and metal grilles

ALPHASONIK

ALPHASONIK VST150 1.5" Bullet Tweeters 300W Max 4 Ohm Pair car speaker

SKU CH-KFKZ-CEQG9 MPN VST150

1.5-inch bullet aluminium tweeters deliver 75 W RMS, 300 W peak and 103 dB sensitivity across 2 kHz–22 kHz

  • Speaker unit size1.5 in (3.81 cm)
  • Compatible vehiclesAutomotive
  • Peak wattage300 W
  • RMS power rating75 W
  • Rated impedance4 Ohm
  • Product typeTweeter
  • Clear highs up to 22 kHz from 1.5" bullet aluminum tweeters
  • 75 W RMS continuous power with 300 W peak capacity
  • High 103 dB sensitivity produces loud output with less amplifier power
  • Compact 52 mm mounting hole fits most factory locations
  • 4-ohm impedance matches standard car audio systems

1.5" Bullet Tweeter Pair

The ALPHASONIK VST150 is a pair of 1.5-inch super bullet tweeters built for automotive audio systems. They handle 75 watts RMS and 300 watts peak power at 4 ohms. The aluminum diaphragms deliver a frequency response of 2kHz to 22kHz with 103dB sensitivity. These components suit drivers adding clear high-frequency detail to a factory or custom setup.

Upgrade from basic factory tweeters

Factory-installed tweeters often lack power handling and extended high-frequency output. The VST150 replaces those units when the system demands 75 watts RMS continuous power and peak capacity of 300 watts. The jump is worth it when the amplifier can deliver clean power above 2kHz and the installer needs a 52mm mounting hole with 1.78-inch mounting depth.

High-frequency headroom and limits

The tweeters comfortably reproduce frequencies from 2kHz to 22kHz at high output levels thanks to 103dB sensitivity and 35.5mm voice coils. They run out of authority below 2kHz, so a separate midrange or midbass driver is required for lower frequencies. The 2.72-inch overall diameter and 2.99-inch mounting diameter define the installation envelope.

How it compares

Measured against everything we stock in Car Stereo Speakers, at today’s prices. Recalculated every night.

Price $154.99
Pricier than about 63% of the 379 comparable items (median $104.99).

Specifications

Product
Brand nameAlphasonik
Model nameVST150
Part numberVST150
Product typeTweeter
Product colorBlack
Audio & video
Speaker unit size1.5 in (3.81 cm)
RMS power rating75 W
Rated impedance4 Ohm
Power
Peak wattage300 W
Compatibility
Compatible vehiclesAutomotive

Questions about this item

What size mounting hole do these 1.5" bullet tweeters need?

Each tweeter requires a 2.05 inch or 52 mm mounting hole to fit correctly.

How do I wire the VST150 tweeters to my amplifier without damaging them?

Connect each 4 ohm tweeter in parallel for a 2 ohm load or series for 8 ohms, matching your amp's stable impedance and using a high-pass crossover at 2 kHz or higher.

When should I replace the aluminum diaphragms on these super bullet tweeters?

Replace them if you hear harshness, distortion above 22 kHz, or a drop from the rated 103 dB sensitivity, which signals diaphragm fatigue.

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