SoundQubed HDS Series Pro Audio Bullet 6.5" Speaker (each)
Description
Description
HDS Pro Audio PA6B-4 — 6.5" Pro Audio Midrange | 150W RMS | 96 dB | 23 oz Ferrite Motor | 4Ω | Sold Single
The HDS Pro Audio PA6B-4 is an entry-level 6.5" pro audio midrange driver built for enthusiasts who want pro audio performance in a budget-friendly package. Featuring a curvilinear non-pressed paper cone, cloth surround, a 23 oz ferrite magnet, a 1.5" / 38.1mm CCAW voice coil on a Kapton former, and a steel basket, the PA6B-4 delivers 150W RMS / 300W max at 96 dB sensitivity with a frequency response of 80 Hz–12 kHz at 4Ω. Sold as a single speaker — order the quantity you need for your build.
The PA6B-4’s curvilinear non-pressed paper cone delivers a natural, detailed midrange character with low mass for fast transient response. The 23 oz ferrite motor provides solid output and sustained power handling for an entry-level pro audio driver. With a 7.2mm one-way Xmax, Fs of 150 Hz, and a recommended HPF of 160 Hz, the PA6B-4 is optimized for midrange duty in a 2-way or 3-way active front stage. The crossed-on-spider lead connection and regular spade terminals make installation straightforward.
If you need more power handling and a more advanced motor system, step up to the SoundQubed PA6B-4 (300W RMS, ferrite + neodymium hybrid, aluminum basket) — the HDS PA6B-4 is the smart entry point for a budget-conscious pro audio midrange build.
Why Choose the HDS Pro Audio PA6B-4?
- 150W RMS / 300W MAX @ 4Ω — Entry-level pro audio power handling — a significant step up from standard coaxial speakers.
- 96 dB Sensitivity (1W/1m) — High efficiency for an entry-level pro audio driver — delivers strong output with modest amplification.
- Curvilinear Non-Pressed Paper Cone — Low-mass, natural-sounding cone with a curvilinear profile for controlled breakup and detailed midrange reproduction.
- 23 oz Ferrite Motor — Solid motor for an entry-level pro audio 6.5" — clean, controlled midrange output at real power levels.
- 7.2mm One-Way Xmax — Serious linear excursion for an entry-level 6.5" midrange — handles dynamic peaks without distortion.
- 1.5" CCAW Voice Coil on Kapton Former — Lightweight, thermally efficient winding for sustained power handling.
- Regular Spade Terminals — Standard connection type for easy integration into any install.
- Sold Single — Buy exactly what you need — order quantity two for a stereo pair.
Installation & Pairing Recommendations
Crossover Configuration: The PA6B-4 is a dedicated midrange driver — always use a high-pass crossover set at 160 Hz minimum to protect the driver and keep it operating in its optimal range. A band-pass configuration (160 Hz HPF / 8–12 kHz LPF) is recommended for maximum output and driver protection. Use an active crossover or DSP for precise crossover point management.
Amplifier Pairing: The PA6B-4 handles 150W RMS at 4Ω. Any SoundQubed 4-channel amplifier with at least 75–150W RMS per channel at 4Ω is a solid match — the S4-100 (100W x4) or Q4-150ABv2 (150W x4) are ideal for a budget-friendly pro audio front stage build.
Upgrade Path: If you need more power handling and a more advanced motor system, the SoundQubed PA6B-4 (300W RMS, ferrite + neodymium hybrid motor, aluminum basket, glass fiber former) is the next step up in the 6.5" pro audio midrange lineup.
Mounting: The PA6B-4 requires a 5.65" / 143.5mm baffle cutout and 2.4" / 61mm mounting depth. Overall diameter is 6.55" / 166.4mm, overall depth is 2.66" / 67.6mm. Motor diameter is 4.33" / 110mm. Verify your mounting location provides adequate depth clearance before purchasing.
Full Specifications
General
| Specification | Value |
|---|---|
| Nominal Diameter | 6.5" / 165mm |
| Nominal Impedance | 4 Ohms |
| Continuous Power Handling | 100W |
| RMS Power Handling | 150W |
| MAX Power Handling | 300W |
| Sensitivity (1W/1m) | 96 dB |
| Frequency Response | 80 Hz – 12 kHz |
| Recommended Hi-Pass Crossover | 160 Hz |
| Cone Shape | Curvilinear |
| Speaker Terminals | Regular Spade |
| Sold In | Single |
Motor Specifications
| Specification | Value |
|---|---|
| Voice Coil Diameter | 1.5" / 38.1mm |
| VC Former Material | Kapton |
| Winding Material | CCAW |
| Cone Material | Non-Pressed Paper |
| Bullet Material | ABS |
| Bullet Color | Black |
| Surround Material | Cloth |
| Leads Connection Type | Crossed on Spider |
| Basket Material | Steel |
| Basket Color | Black |
| Magnet Material | Ferrite |
| Magnet Weight | 23 oz |
| Displacement Volume | 0.35L / 0.012ft³ |
Thiele & Small Parameters
| Parameter | Value |
|---|---|
| Equivalent Volume (Vas) | 4.028L |
| Excursion One Way (Xmax) | 7.2mm |
| Free Air Resonance (Fs) | 150 Hz |
| Mechanical Factor (Qms) | 11.72 |
| Electrical Factor (Qes) | 1.192 |
| Total Factor (Qts) | 1.082 |
| Mechanical Mass (Mms) | 7.597g |
| Mechanical Compliance (Cms) | 0.268mm/N |
| BL Factor (BL) | 3.27 |
| Voice Coil Inductance (Le) | 0.09117mH |
| Cone Area (Sd) | 134.78cm² |
| DC Resistance (Re) | 3.4 Ohms |
| Mechanical Mass w/o Air (Mmd) | 6.697g |
Speaker Measurements
| Dimension | Value |
|---|---|
| Overall Diameter | 6.55" / 166.4mm |
| Overall Depth | 2.66" / 67.6mm |
| Front Mount Baffle Cutout | 5.65" / 143.5mm |
| Mounting Depth | 2.4" / 61mm |
| Motor Diameter | 4.33" / 110mm |
Frequently Asked Questions
Q: What’s the difference between the HDS PA6B-4 and the SoundQubed PA6B-4?
A: These are two different drivers at different price points. The HDS PA6B-4 is the entry-level option — 150W RMS, 23 oz ferrite motor, steel basket, Kapton former. The SoundQubed PA6B-4 steps up to 300W RMS, a ferrite + neodymium hybrid motor (30 + 3 oz), aluminum basket, and glass fiber former for more power handling and a more advanced motor system.
Q: Is the HDS PA6B-4 a full-range speaker or a dedicated midrange?
A: It’s a dedicated pro audio midrange driver — not a full-range speaker. Always use a high-pass crossover at 160 Hz minimum and pair it with a dedicated tweeter and subwoofer or midbass driver for a complete system.
Q: What amplifier should I pair with the HDS PA6B-4?
A: The PA6B-4 handles 150W RMS at 4Ω. The SoundQubed S4-100 (100W x4) or Q4-150ABv2 (150W x4) are ideal matches for a budget-friendly pro audio front stage build.
Q: Is this sold as a pair or single?
A: The HDS PA6B-4 is sold as a single speaker. Order quantity two for a stereo pair.
