DS18 PRO-TWX4 – 4.5" High-Output Super Bullet Tweeter

Bring powerful high-frequency output to your custom car audio system with the DS18 PRO-TWX4 Super Bullet Tweeter. Designed for high-output builds, this 4.5-inch tweeter combines a titanium diaphragm, large 1.75-inch voice coil and aluminum bullet construction to deliver prominent treble that helps vocals and musical details stand out.

With a rated sensitivity of 108dB, the PRO-TWX4 is built for systems where strong output and projection are priorities. Its substantial voice coil and serviceable design make it a practical option for enthusiasts building loud daily-driver systems, custom speaker panels or competition-inspired audio setups.

Pair it with compatible midrange speakers, suitable amplification and a properly configured crossover to create a more complete high-output speaker system.

Sold individually. 

BUILT FOR HIGH-OUTPUT CAR AUDIO

4.5-Inch Super Bullet Design

The PRO-TWX4 is designed to deliver strong high-frequency presence in custom audio systems. Its larger format makes it a suitable choice for builds that prioritize output and prominent treble rather than a discreet factory-style tweeter replacement.

Titanium Diaphragm

The titanium diaphragm is designed for high-frequency reproduction, helping bring definition and detail to the upper range of your music.

Large 1.75-Inch Voice Coil

The 1.75-inch voice coil is a key component of the PRO-TWX4's high-output design. Combined with the tweeter's motor and diaphragm, it supports the demands of a more powerful custom speaker system.

High Sensitivity for Strong Output

With a sensitivity rating of 108dB at 1W/1m, the PRO-TWX4 is designed to produce substantial acoustic output from relatively little input power. Proper gain adjustment and crossover protection are important when integrating it with other speakers.

Aluminum Body and Bullet

The aluminum body and bullet provide a solid construction suited to custom installations. The black finish and machined faceplate also give the tweeter a distinctive appearance in exposed speaker panels and fabricated pods.

Serviceable Voice Coil Design

The PRO-TWX4 can be serviced using the compatible DS18 PRO-TW4.8VC replacement voice coil. This gives customers a replacement option if the original voice coil needs attention, subject to confirming the replacement part's compatibility.

KEY FEATURES

• DS18 PRO Series super bullet tweeter

• 4.5-inch nominal diameter

• 4-ohm nominal impedance

• 140W AES power handling

• 280W program power handling

• 560W peak power handling

• 108dB sensitivity rating

• Titanium diaphragm

• 1.75-inch voice coil

• Ferrite magnet

• Aluminum body and bullet

• Black finish with machined faceplate

• Frequency response: 1.5kHz–20kHz

• Recommended high-pass crossover: 2kHz

• Serviceable voice coil design

• Sold individually

TECHNICAL SPECIFICATIONS

AES, program and peak ratings describe different power-handling measures. Use the AES rating as the conservative continuous-power reference when planning your system.

HOW THE PRO-TWX4 FITS INTO YOUR SYSTEM

The PRO-TWX4 is a dedicated high-frequency component, intended to work alongside midrange speakers rather than replace a full-range speaker.

In a custom high-output system, midrange speakers handle the core vocal and instrumental range while the tweeter adds the upper frequencies. When correctly matched and tuned, this combination can help the system maintain treble presence as overall listening levels increase.

Its 108dB sensitivity means that output balance deserves particular attention. A tweeter that is too loud relative to the midrange can make a system sound harsh, even when the individual components are capable of strong performance.

WHAT IS A SUPER BULLET TWEETER?

A super bullet tweeter is designed to emphasize the high-frequency range in systems where output and projection are important. The bullet-style design is commonly used in custom car audio builds that feature dedicated midrange speakers and amplified speaker systems.

The PRO-TWX4 is particularly relevant to customers building high-output custom systems, rather than shoppers looking for a simple factory tweeter replacement.

RECOMMENDED APPLICATIONS

The DS18 PRO-TWX4 is suited to:

• High-output daily-driver car audio systems

• Custom door pods and speaker panels

• Fabricated speaker enclosures

• Systems using dedicated midrange speakers

• Multi-speaker builds requiring strong treble output

• Custom car audio projects

• Competition-inspired speaker systems

This is a component tweeter, not a vehicle-specific factory replacement. Check the mounting dimensions and available space before purchasing for a custom installation.

INSTALLATION AND SYSTEM-MATCHING CONSIDERATIONS

Use Appropriate Crossover Protection

DS18 specifies a recommended high-pass crossover of 2kHz. The correct crossover setting depends on the filter slope, intended output and how the tweeter integrates with the other speakers in your system.

Do not operate the tweeter without suitable high-pass protection. A DSP, active crossover or compatible passive crossover may be appropriate depending on the system design.

Match Power Correctly

Use the 140W AES rating as the conservative continuous-power reference when planning the amplifier and system. Do not treat the 560W peak figure as a continuous power target.

Correct gain settings and crossover configuration are essential for reliable performance.

Confirm the Final Impedance

Each PRO-TWX4 is rated at 4 ohms. If multiple tweeters share an amplifier channel, calculate the final load and confirm that the amplifier can safely support it.

Check Mounting Clearance

The tweeter requires approximately 2.76 inches of mounting depth and a 3.62-inch front-mount cutout. Allow additional room for wiring and surrounding components, and measure the intended installation location before cutting.

Plan for the Complete System

For balanced output, match the PRO-TWX4 with suitable midrange speakers and adjust the crossover and relative levels during tuning. High sensitivity can make the tweeter sound significantly louder than other components if the system is not configured correctly.

PRO AUDIO CENTER TIP

The PRO-TWX4 is a strong option when your goal is high-output treble in a custom speaker system. Before choosing an amplifier, look at the complete speaker setup, including how many tweeters you'll use, the final impedance and the power available per channel.

Start with appropriate high-pass protection around the recommended crossover point, then adjust the tweeter level until it blends with the midrange. This helps you get the extra presence you're after without making vocals and cymbals overly sharp.

If you are building a complete DS18 PRO Series system, choose the midrange speakers and amplification together rather than buying components based on peak wattage alone.

WHAT'S INCLUDED

• 1 × DS18 PRO-TWX4 Super Bullet Tweeter

Sold individually. Order two for a typical left-and-right stereo setup.

WHAT THIS TWEETER PAIRS BEST WITH

• DS18 PRO Series midrange speakers: Build a high-output speaker system with dedicated midrange and treble.

• Compatible multi-channel amplifier: Choose an amplifier based on the complete speaker configuration and final impedance.

• DSP or active crossover: Helps balance tweeter output with the rest of the system.

• Custom speaker pods or panels: A good fit for fabricated installations where mounting space is available.

For a balanced system, match the tweeter's output to the midrange speakers instead of maximizing treble volume alone.

INSTALLATION NOTES

• Use proper high-pass crossover protection, starting at the recommended 2kHz point and accounting for the crossover slope and system design.

• Confirm the amplifier supports the final impedance if multiple tweeters share a channel.

• Measure the mounting cutout and depth before modifying a panel.

• Set amplifier gain carefully to avoid excessive high-frequency output.

• Treat the 560W peak rating as a peak figure, not continuous operating power.

FREQUENTLY ASKED QUESTIONS

Is the DS18 PRO-TWX4 sold as a pair?

No. It is sold individually. Order two for a typical stereo installation.

What amplifier should I use?

Choose an amplifier that supports the final speaker impedance and provides suitable power for the complete system. Use the AES power rating as the conservative continuous-power reference when planning your setup.

What crossover should I use?

DS18 recommends a 2kHz high-pass crossover. The appropriate final setting depends on the filter slope, installation and other speakers in the system.

Can I connect multiple PRO-TWX4 tweeters to one channel?

Potentially, but the wiring configuration changes the final impedance. Verify that your amplifier supports the resulting load before connecting multiple tweeters.

Is a replacement voice coil available?

Yes. The DS18 PRO-TW4VC is the 4-ohm replacement diaphragm listed for compatible PRO-TWX4 tweeters. Confirm the model and impedance before ordering.