SoundQubed 3.8" HDS-PAT1 Q-Shaped Pro Audio Tweeter (pair)

SoundQubed HDS-PAT1 — 3.8" Pro Audio Compression Tweeter | Aluminum Diaphragm | 103.5 dB | 8 oz Ferrite Motor | Sold as Pair

The SoundQubed HDS-PAT1 is a high-output 3.8" pro audio compression tweeter engineered for car audio enthusiasts who demand maximum treble output, clarity, and efficiency in a bold, machined aluminum package. Featuring a machined aluminum diaphragm with the signature Q logo faceplate, CCAW winding on a Kapton former, an 8 oz ferrite magnet, and an aluminum body and bullet, the HDS-PAT1 delivers 60W AES / 120W program / 240W peak at 103.5 dB sensitivity with a frequency response of 3.5 kHz–20 kHz at 4Ω. No bass blocker included — use an active crossover or DSP set at 3.5 kHz HPF. Sold as a pair.

The HDS-PAT1’s aluminum diaphragm delivers the rigid, low-mass high-frequency reproduction that aluminum is known for — crisp, bright, detailed treble with excellent power handling and a wide frequency response from 3.5 kHz to 20 kHz. The 8 oz ferrite motor provides the magnetic force needed for high-sensitivity output at 103.5 dB — one of the highest sensitivity ratings in its class. The machined aluminum faceplate with Q logo and black/machined finish deliver a premium, aggressive aesthetic that matches the HDS-PAT1’s performance character. At 3.78" / 96mm overall diameter and 2.78" / 70.5mm overall depth, the HDS-PAT1 is a substantial tweeter that commands attention in any install.

Why Choose the SoundQubed HDS-PAT1?

• 60W AES / 120W Program / 240W Peak @ 4Ω — Pro-grade power handling for a compression tweeter — handles real amplifier power in high-output builds.
• 103.5 dB Sensitivity (1W/1m) — Exceptionally high efficiency — delivers massive treble output with minimal amplification.
• Aluminum Diaphragm — Rigid, low-mass diaphragm for crisp, bright, detailed high-frequency reproduction with excellent power handling.
• 8 oz Ferrite Motor — Substantial motor for a compression tweeter — delivers the magnetic force needed for 103.5 dB sensitivity and sustained high-power performance.
• CCAW Voice Coil on Kapton Former — Lightweight, thermally efficient winding on a rigid former — handles sustained high-power use without thermal compression.
• Machined Aluminum Faceplate with Q Logo — Premium black/machined finish — looks as aggressive as it sounds.
• Sold as a Pair — Two tweeters included — ready for a complete stereo install.

Installation & Pairing Recommendations

Crossover Configuration: The HDS-PAT1 does not include a built-in bass blocker. Always use an active crossover or DSP set at 3.5 kHz HPF minimum to protect the tweeter and keep it operating in its optimal range. A passive crossover with a 3.5 kHz high-pass filter is also acceptable for simpler builds. Never run the HDS-PAT1 full-range.

Amplifier Pairing: The HDS-PAT1 handles 60W AES / 120W program at 4Ω and is rated at 103.5 dB sensitivity — it will be significantly louder than most woofers at the same power level. Use a separate amplifier channel or attenuate the tweeter level via your DSP or crossover to balance system output. Any SoundQubed 4-channel amplifier with per-channel level control is a solid match.

Pairing with Pro Audio Midranges: The HDS-PAT1 pairs naturally with the SoundQubed PA6B-4 or PA65M-8 6.5" pro audio midranges in a 2-way active front stage. Set the midrange LPF at 3.5 kHz and the HDS-PAT1 HPF at 3.5 kHz for a seamless crossover point. Use a DSP for precise level matching between the 97 dB midrange and 103.5 dB tweeter.

Mounting: The HDS-PAT1 requires a 2.83" / 72mm baffle cutout and 2.56" / 65mm mounting depth. Overall diameter is 3.78" / 96mm, overall depth is 2.78" / 70.5mm. Motor diameter is 2.76" / 70mm. This is a substantial tweeter — verify your mounting location provides adequate depth clearance before purchasing.

Full Specifications

General

Body / Features

Motor Specifications

Measurements

Frequently Asked Questions

Q: Does the HDS-PAT1 include a built-in crossover or bass blocker?
A: No — the HDS-PAT1 does not include a built-in bass blocker. You must use an active crossover, DSP, or passive crossover set at 3.5 kHz HPF minimum to protect the tweeter. Never run the HDS-PAT1 full-range.

Q: What midrange or woofer does the HDS-PAT1 pair with?
A: The HDS-PAT1 pairs naturally with the SoundQubed PA6B-4 or PA65M-8 6.5" pro audio midranges (crossed at 3.5 kHz LPF/HPF), or with any SoundQubed HDX Series coaxial in a 2-way active front stage. At 103.5 dB sensitivity, use a DSP to attenuate the tweeter level relative to your midrange for a balanced system.

Q: What’s the difference between AES, program, and peak power ratings?
A: AES (60W) is the sustained continuous power the tweeter can handle long-term. Program (120W) is the real-world music power handling — 2x AES. Peak (240W) is the maximum instantaneous power for short transients — 4x AES. Match your amplifier to the AES or program rating for safe, long-term use.

Q: Is this sold as a pair or single?
A: The HDS-PAT1 is sold as a pair — two tweeters included for a complete stereo install.