SoundQubed HDS Series 6x9" Coaxial 3-way Speakers (Pair)

SoundQubed HDS Series 6x9" 2-Way Coaxial Speakers — Paper Cone | Mylar Dome Tweeter | Pair

The SoundQubed HDS Series 6x9" 2-Way Coaxial is SoundQubed’s entry-level 6x9" coaxial speaker — built for enthusiasts who want a meaningful upgrade over stock speakers without breaking the bank. The HDS Series stands for Heavy Duty Street Series, and that’s exactly what you get: a speaker that handles more power, looks good, and fits your budget. Featuring a paper cone, rubber surround, a massive 510g barium ferrite magnet, and an integrated 1.65" Mylar dome tweeter, the HDS 6x9" delivers 60W RMS / 180W max at 87 dB sensitivity with a frequency response of 65 Hz–20 kHz. Sold as a pair with grills included. If you need more power and performance, step up to the SoundQubed HDX-CX69 — the HDS is the smart starting point for a budget-conscious 6x9" upgrade.

The HDS 6x9" woofer features a 1" / 25.5mm ASV voice coil former wound with EISV winding material, a paper cone with a rubber surround, and a black matte steel basket. The integrated 1.65" / 42mm Mylar dome tweeter uses a barium ferrite magnet and EISVM winding on a PESV former for high-frequency reproduction. With a recommended hi-pass crossover at 80 Hz, the HDS 6x9" works seamlessly with your amplifier’s built-in crossover — no separate passive crossover required.

The T/S parameters confirm a solid entry-level driver: Fs of 65 Hz, Xmax of 3.3mm, Vas of 15.9L, and a cone area (Sd) of 151.5cm². Whether you’re upgrading factory rear deck or door locations, the HDS 6x9" delivers the output and value to get it done.

Why Choose the SoundQubed HDS Series 6x9" Coaxial?

• 60W RMS / 180W MAX @ 4Ω — Handles real amplifier power for an entry-level 6x9" coaxial — a significant step up from stock speakers.
• 87 dB Sensitivity (1W/1m) — Efficient enough for head unit power, but designed to perform with proper amplification.
• 510g Barium Ferrite Magnet — Serious motor for an entry-level 6x9" — drives the cone with authority for solid midbass output.
• Paper Cone + Rubber Surround — Classic cone material with a warm, natural midrange character and long-term durability from the rubber surround.
• 1.65" Mylar Dome Tweeter — Integrated high-frequency driver for extended treble response — no separate tweeter install required.
• 65 Hz–20 kHz Frequency Response — Wide range from upper bass through extended treble — a complete solution in a single 6x9" driver.
• 3.3mm Xmax — Solid linear excursion for an entry-level coaxial — handles dynamic peaks without distortion.
• Grills Included — Complete install-ready package for a clean, finished look.

Installation & Pairing Recommendations

Amplifier Pairing: The HDS 6x9" handles 60W RMS / 180W max at 4Ω. It pairs well with any SoundQubed 4-channel amplifier — the S4-100 (100W x4) is an ideal match for a budget-friendly daily driver build. Set your amplifier’s HPF at 80 Hz to protect the driver and maximize output.

Upgrade Path: If you need more power handling and performance, the SoundQubed HDX-CX69 (120W RMS / 360W max, 92 dB, glass fiber cone, neodymium tweeter) is the next step up in the 6x9" lineup.

Mounting: The HDS 6x9" requires a 5.9" x 8.66" / 150 x 220mm baffle cutout and 2.93" / 74.5mm mounting depth. With grill, overall dimensions are 7.4" x 10.39" / 188 x 264mm. Verify your mounting location depth before purchasing.

Full Specifications

General

Woofer Specifications

Thiele & Small Parameters

Tweeter Specifications

Speaker Measurements

Frequently Asked Questions

Q: What’s the difference between the HDS and HDX 6x9" coaxials?
A: The HDS is SoundQubed’s entry-level 6x9" — paper cone, 60W RMS, and a Mylar dome tweeter. The HDX-CX69 steps up to a glass fiber cone, 120W RMS, 92 dB sensitivity, and a neodymium tweeter for significantly more output and clarity. The HDS is the smart budget choice; the HDX-CX69 is for builds that demand more.

Q: What amplifier should I pair with the HDS 6x9"?
A: The HDS 6x9" handles 60W RMS / 180W max at 4Ω. The SoundQubed S4-100 (100W x4) is a perfect match for a daily driver build. Set your HPF at 80 Hz for best results and driver protection.

Q: Do I need a separate tweeter or crossover?
A: No — the HDS 6x9" is a 2-way coaxial with an integrated 1.65" Mylar dome tweeter. No separate tweeter or passive crossover is required — just connect to your amplifier and go.

Q: Are these sold as a pair or individually?
A: The HDS 6x9" is sold as a pair — two speakers and two grills are included.