SoundQubed HDX Series Tweeter 2.25" (Pair)

SoundQubed HDX Series 2.2" Titanium Dome Tweeter — Pair | Neodymium Motor | Aluminum Body

The SoundQubed HDX Series 2.2" Titanium Dome Tweeter is a premium sound quality tweeter built for enthusiasts who demand detailed, accurate high-frequency reproduction in their car audio system. Featuring a titanium diaphragm, neodymium magnet motor, and a rigid black aluminum body, the HDX tweeter delivers crisp, extended highs from 920 Hz to 20 kHz with a sensitivity of 95.2 dB (1W/1m) — making it an efficient, high-output tweeter that pairs beautifully with a wide range of amplifiers and component speaker systems. Sold as a pair for a balanced front-stage stereo image.

The HDX tweeter features a 1" / 25.4mm voice coil wound on a Kapton former with CCAW (Copper Clad Aluminum Wire) winding for lightweight, responsive high-frequency performance. A built-in 3.3µF bass blocker filter provides basic high-pass protection, with a recommended hi-pass crossover point of 3.8 kHz for optimal performance and driver protection. At just 0.65" mounting depth and 1.85" front mount baffle cutout, the HDX tweeter installs easily in dashboards, doors, A-pillars, and kick panels — virtually anywhere in your build.

With 15W AES power handling, 30W program, and 60W peak, the HDX tweeter is designed for use with quality amplification and proper crossover configuration. The black aluminum body and black faceplate maintain a clean, premium aesthetic in any interior.

Why Choose the SoundQubed HDX Series Tweeter?

• Titanium Dome Diaphragm — Lightweight, rigid, and thermally stable — delivers detailed, extended high-frequency response without harshness or breakup at high output levels.
• Neodymium Magnet Motor — High-flux, compact motor design delivers strong sensitivity (95.2 dB) in a small package — efficient and powerful.
• 95.2 dB Sensitivity (1W/1m) — High sensitivity means more output per watt — pairs well with both low-power and high-power amplification.
• 920 Hz–20 kHz Frequency Response — Wide high-frequency range from upper midrange through extended treble — captures vocal presence, cymbals, and air with clarity.
• Built-In 3.3µF Bass Blocker — Provides basic high-pass protection right out of the box — use with an active or passive crossover at 3.8 kHz for best results.
• Ultra-Shallow 0.65" Mounting Depth — Fits in tight locations including A-pillars, dash corners, and door panels where depth is limited.
• Black Aluminum Body + Black Faceplate — Premium, rigid construction with a clean aesthetic that complements any interior build.
• Sold as a Pair — Two tweeters included for a balanced, symmetrical front-stage stereo image.

Installation & Pairing Recommendations

Crossover Configuration: The HDX tweeter includes a built-in 3.3µF bass blocker for basic protection, but for best sound quality and driver longevity, use an active or passive crossover set at 3.8 kHz high-pass. This protects the tweeter from low-frequency content and allows it to operate in its optimal range. Pair with a quality midrange or mid-bass driver crossed over at the same point for a seamless front stage.

Amplifier Pairing: The HDX tweeter handles 15W AES / 30W program / 60W peak at 4Ω. It pairs well with any 4-channel amplifier running channels 1/2 in high-pass mode — including the SoundQubed Q4-150ABv2, Q4-2000, or Q4-3200. Keep your gain set conservatively and use a proper crossover to avoid tweeter damage from clipping or low-frequency content.

Mounting Locations: The 1.85" cutout and 0.65" mounting depth make the HDX tweeter compatible with A-pillar pods, dash corners, door panel tweeters, and kick panel locations. The 2.28" overall diameter fits most OEM tweeter locations with a simple adapter ring.

Full Specifications

Frequently Asked Questions

Q: What crossover point should I use with the HDX tweeter?
A: SoundQubed recommends a 3.8 kHz high-pass crossover for optimal performance and driver protection. The built-in 3.3µF bass blocker provides basic protection, but an active or passive crossover at 3.8 kHz will give you the best sound quality and longevity.

Q: What amplifier should I pair with the HDX tweeter?
A: Any 4-channel amplifier with high-pass crossover capability works well — the SoundQubed Q4-150ABv2, Q4-2000, or Q4-3200 are all excellent matches. Keep your gain set conservatively and always use a proper crossover to protect the tweeter from clipping and low-frequency content.

Q: Are these sold as a pair or individually?
A: The HDX Series 2.2" tweeter is sold as a pair — two tweeters are included for a balanced front-stage stereo image.

Q: What makes a titanium dome tweeter better than a silk dome?
A: Titanium domes are stiffer and more thermally stable than silk, allowing for higher output levels and extended high-frequency response without breakup. They tend to have a brighter, more detailed character — ideal for high-output car audio systems where clarity and presence at volume are the priority.