SoundQubed HDX Series 6x9" Coaxial 2-way Speakers (pair)
Description
Description
SoundQubed HDX-CX69 — 6x9" 2-Way Coaxial Speakers | Glass Fiber Cone | Neodymium Tweeter | Pair
The SoundQubed HDX-CX69 is a high-output 6x9" 2-way coaxial speaker built for enthusiasts who want a direct-fit, stock-location upgrade that keeps up with the rest of the HDX lineup. Featuring a glass fiber cone, rubber surround, a massive 550g barium ferrite magnet, and a neodymium tweeter, the HDX-CX69 delivers 120W RMS / 360W max at 92 dB sensitivity with a frequency response of 31.5 Hz–20 kHz — serious output and extension for a coaxial speaker. Sold as a pair with grills included, the HDX-CX69 is the straightforward, high-performance upgrade your 6x9" locations deserve.
The HDX-CX69 woofer features a 1.25" / 30.4mm KSV voice coil former wound with EISV winding material, a glass fiber cone with a rubber surround, and a black matte steel basket. The integrated 1" / 25.4mm neodymium tweeter uses a PEI diaphragm and EISVM winding on a KSV former for smooth, detailed high-frequency reproduction. With a recommended hi-pass crossover at 50 Hz, the HDX-CX69 is designed to work with your amplifier’s built-in crossover — no separate passive crossover required for a coaxial install.
The T/S parameters tell the full story: Fs of 58 Hz, Xmax of 3.3mm, Vas of 17.52L, and a cone area (Sd) of 207.7cm² — a well-engineered driver with real excursion capability and a large radiating surface for a 6x9" coaxial. Whether you’re building a daily driver system or upgrading a motorcycle bagger, the HDX-CX69 delivers the output and clarity to match.
Why Choose the SoundQubed HDX-CX69?
- 120W RMS / 360W MAX @ 4Ω — Handles real amplifier power for a 6x9" coaxial — pairs well with any SoundQubed 4-channel amplifier.
- 92 dB Sensitivity (1W/1m) — High efficiency means more output per watt — loud and clear even with modest amplification.
- Glass Fiber Cone + Rubber Surround — Stiff, lightweight cone material delivers accurate midrange with controlled resonance and long-term durability.
- 550g Barium Ferrite Magnet — Large, powerful motor for a 6x9" coaxial — drives the cone with authority for deep, impactful midbass.
- Neodymium Tweeter (PEI Diaphragm) — Smooth, detailed high-frequency reproduction integrated directly into the coaxial design — no separate tweeter install required.
- 31.5 Hz–20 kHz Frequency Response — Extended low-frequency response for a coaxial — delivers real midbass output without a separate mid-bass driver.
- 3.3mm Xmax — Solid linear excursion for a coaxial speaker — handles dynamic peaks without distortion.
- Grills Included — Complete install-ready package for a clean, finished look in any 6x9" location.
Installation & Pairing Recommendations
Amplifier Pairing: The HDX-CX69 handles 120W RMS / 360W max at 4Ω. It pairs perfectly with any SoundQubed 4-channel amplifier — the Q4-150ABv2 (150W x4), Q4-2000 (325W x4), or Q4-3200 (520W x4) are all excellent matches. Set your amplifier’s HPF at 50–80 Hz to protect the driver from extreme low-frequency content and maximize output.
Motorcycle / Bagger Install: The HDX-CX69 is also listed in the Motorcycle Speakers collection — it’s a popular choice for Harley-Davidson saddlebag lid and fairing speaker locations that accept 6x9" drivers. Pair with the SoundQubed BG4-700 or BG4-1400 for a complete bagger audio system.
Mounting: The HDX-CX69 requires a 5.9" x 8.7" / 151 x 221mm baffle cutout and 3.3" / 84mm mounting depth. With grill, overall dimensions are 7.2" x 10.1" / 184.5 x 257.5mm. Verify your mounting location depth before purchasing.
Full Specifications
General
| Specification | Value |
|---|---|
| Nominal Diameter | 6x9" / 152x228mm |
| Nominal Impedance | 4 Ohms |
| RMS Power Handling | 120W |
| MAX Power Handling | 360W |
| Sensitivity (1W/1m) | 92 dB |
| Frequency Response | 31.5 Hz – 20 kHz |
| Recommended Hi-Pass Crossover | 50 Hz |
| Number of Ways | 2-Way |
| Sold In | Pair |
| Grill Included | Yes |
Woofer Specifications
| Specification | Value |
|---|---|
| Voice Coil Diameter | 1.25" / 30.4mm |
| Voice Coil Former Material | KSV |
| Winding Material | EISV |
| Cone Material | Glass Fiber |
| Surround Material | Rubber |
| Basket Material | Steel |
| Basket Color/Finish | Black Matte |
| Magnet Material | Barium Ferrite |
| Magnet Weight | 550g |
Thiele & Small Parameters
| Parameter | Value |
|---|---|
| Equivalent Volume (Vas) | 17.52L / 0.618ft³ |
| Excursion One Way (Xmax) | 3.3mm |
| Free Air Resonance (Fs) | 58 Hz |
| Mechanical Factor (Qms) | 5.77 |
| Electrical Factor (Qes) | 1.18 |
| Total Factor (Qts) | 0.98 |
| Mechanical Mass (Mms) | 23.44g |
| Mechanical Compliance (Cms) | 286mm/N |
| BL Factor (BL) | 5.18 |
| Voice Coil Inductance (Le) | 0.178mH |
| Cone Area (Sd) | 207.7cm² |
| DC Resistance (Re) | 3.5 Ohms |
| Mechanical Mass w/o Air (Mmd) | 20g |
Tweeter Specifications
| Specification | Value |
|---|---|
| Nominal Diameter | 1" / 25.4mm |
| Voice Coil Diameter | 0.8" / 20.4mm |
| VC Former Material | KSV |
| Winding Material | EISVM |
| Diaphragm Material | PEI |
| Magnet Material | Neodymium |
| Magnet Weight | 8.5g |
Speaker Measurements
| Dimension | Value |
|---|---|
| Overall Diameter (With Grill) | 7.2x10.1" / 184.5x257.5mm |
| Overall Depth (With Grill) | 4.17" / 106mm |
| Overall Diameter (Without Grill) | 6.44x9.22" / 163.7x234.2mm |
| Overall Depth (Without Grill) | 3.6" / 91.5mm |
| Front Mount Baffle Cutout | 5.9x8.7" / 151x221mm |
| Mounting Depth | 3.3" / 84mm |
| Motor Diameter | 4.09" / 104mm |
Frequently Asked Questions
Q: What amplifier should I pair with the HDX-CX69?
A: The HDX-CX69 handles 120W RMS / 360W max at 4Ω. The SoundQubed Q4-150ABv2 (150W x4) is a perfect match for a daily driver build. For more output, the Q4-2000 (325W x4) or Q4-3200 (520W x4) will push these speakers to their full potential. Set your HPF at 50–80 Hz.
Q: Do I need a separate tweeter with the HDX-CX69?
A: No — the HDX-CX69 is a 2-way coaxial speaker with an integrated 1" neodymium tweeter built into the woofer. No separate tweeter or passive crossover is required — just connect to your amplifier and go.
Q: Will the HDX-CX69 fit my Harley-Davidson saddlebag lids?
A: The HDX-CX69 requires a 5.9" x 8.7" baffle cutout and 3.3" mounting depth. Many Harley-Davidson touring models accept 6x9" speakers in the saddlebag lids — verify your specific model’s cutout and depth before purchasing. Pair with the BG4-700 or BG4-1400 for a complete bagger audio system.
Q: Are these sold as a pair or individually?
A: The HDX-CX69 is sold as a pair — two speakers and two grills are included.
