SoundQubed HDS Series 4x6" Coaxial 2-way Speakers (Pair)
Description
Description
SoundQubed HDS Series 4x6" 2-Way Coaxial Speakers — Paper Cone | Mylar Dome Tweeter | Pair
The SoundQubed HDS Series 4x6" 2-Way Coaxial is SoundQubed’s entry-level 4x6" coaxial speaker — built for enthusiasts who want a meaningful upgrade over stock dash and door 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 184g barium ferrite magnet, and an integrated 1" Mylar dome neodymium tweeter, the HDS 4x6" delivers 45W RMS / 135W max at 83 dB sensitivity with a frequency response of 105 Hz–20 kHz. Sold as a pair. No grill included.
The HDS 4x6" 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" / 25.4mm Mylar dome tweeter uses a neodymium magnet (3g) and EISVM winding on a KSV former for high-frequency reproduction. With a recommended hi-pass crossover at 120 Hz, the HDS 4x6" works seamlessly with your amplifier’s built-in crossover — no separate passive crossover required.
The T/S parameters confirm a solid compact driver: Fs of 115 Hz, Xmax of 2.3mm, Vas of 2.3L, and a cone area (Sd) of 83.5cm². Whether you’re upgrading factory 4x6" dash or door locations, the HDS 4x6" delivers the output and value to get it done.
Why Choose the SoundQubed HDS Series 4x6" Coaxial?
- 45W RMS / 135W MAX @ 4Ω — Handles real amplifier power for an entry-level 4x6" coaxial — a meaningful step up from stock speakers.
- 83 dB Sensitivity (1W/1m) — Works with head unit power, but performs best with proper amplification.
- Paper Cone + Rubber Surround — Classic cone material with a warm, natural midrange character and long-term durability from the rubber surround.
- 184g Barium Ferrite Magnet — Solid motor for an entry-level 4x6" — clean, controlled midrange output.
- 1" Mylar Dome Neodymium Tweeter — Integrated high-frequency driver for extended treble response — no separate tweeter install required.
- 105 Hz–20 kHz Frequency Response — Wide range from upper bass through extended treble — a complete solution in a compact 4x6" footprint.
- Direct-Fit 4x6" Footprint — 3.6" x 5.94" / 93 x 151mm baffle cutout fits most OEM 4x6" dash and door locations without modification.
- Sold as a Pair — Two speakers included for a balanced stereo upgrade.
Installation & Pairing Recommendations
Amplifier Pairing: The HDS 4x6" handles 45W RMS / 135W 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 120 Hz to protect the driver and maximize output.
Mounting: The HDS 4x6" requires a 3.6" x 5.94" / 93 x 151mm baffle cutout and 1.75" / 44.5mm mounting depth. Overall dimensions are 4" x 6.1" / 102 x 155mm, overall depth is 2.26" / 57.6mm. No grill included — plan your mounting location accordingly. Verify your door or dash panel depth before purchasing.
Note: The HDS 4x6" has an Fs of 115 Hz and a recommended HPF of 120 Hz — this is a compact speaker optimized for upper midrange and treble reproduction. It is not designed for extended bass output. Always use a high-pass crossover to protect the driver.
Full Specifications
General
| Specification | Value |
|---|---|
| Nominal Diameter | 4x6" / 101x152mm |
| Nominal Impedance | 4 Ohms |
| RMS Power Handling | 45W |
| MAX Power Handling | 135W |
| Sensitivity (1W/1m) | 83 dB |
| Frequency Response | 105 Hz – 20 kHz |
| Recommended Hi-Pass Crossover | 120 Hz |
| Number of Ways | 2-Way |
| Sold In | Pair |
| Grill Included | No |
Woofer Specifications
| Specification | Value |
|---|---|
| Voice Coil Diameter | 1" / 25.5mm |
| Voice Coil Former Material | ASV |
| Winding Material | EISV |
| Cone Material | Paper |
| Surround Material | Rubber |
| Basket Material | Steel |
| Basket Color/Finish | Black Matte |
| Magnet Material | Barium Ferrite |
| Magnet Weight | 184g |
Thiele & Small Parameters
| Parameter | Value |
|---|---|
| Equivalent Volume (Vas) | 2.3L / 0.081ft³ |
| Excursion One Way (Xmax) | 2.3mm |
| Free Air Resonance (Fs) | 115 Hz |
| Mechanical Factor (Qms) | 3.7 |
| Electrical Factor (Qes) | 2.46 |
| Total Factor (Qts) | 1.46 |
| Mechanical Mass (Mms) | 8.8g |
| Mechanical Compliance (Cms) | 122mm/N |
| BL Factor (BL) | 3.4 |
| Voice Coil Inductance (Le) | 0.172mH |
| Cone Area (Sd) | 83.5cm² |
| DC Resistance (Re) | 3.7 Ohms |
| Mechanical Mass w/o Air (Mmd) | 8g |
Tweeter Specifications
| Specification | Value |
|---|---|
| Nominal Diameter | 1" / 25.4mm |
| Voice Coil Diameter | 0.5" / 13mm |
| VC Former Material | KSV |
| Winding Material | EISVM |
| Diaphragm Material | Mylar |
| Magnet Material | Neodymium |
| Magnet Weight | 3g |
Speaker Measurements
| Dimension | Value |
|---|---|
| Overall Diameter | 4x6.1" / 102x155mm |
| Overall Depth | 2.26" / 57.6mm |
| Front Mount Baffle Cutout | 3.6x5.94" / 93x151mm |
| Mounting Depth | 1.75" / 44.5mm |
| Motor Diameter | 2.91" / 74mm |
Frequently Asked Questions
Q: What’s the difference between the HDS 4x6" and the HDS 5.25" or 6.5" coaxials?
A: The HDS 4x6" is designed for factory 4x6" locations — it has a higher Fs (115 Hz) and HPF recommendation (120 Hz) than the larger HDS coaxials, making it better suited for upper midrange and treble reproduction. If your vehicle has 5.25" or 6.5" locations, those larger drivers will deliver more midbass output.
Q: What amplifier should I pair with the HDS 4x6"?
A: The HDS 4x6" handles 45W RMS / 135W max at 4Ω. The SoundQubed S4-100 (100W x4) is a perfect match for a daily driver build. Set your HPF at 120 Hz for best results and driver protection.
Q: Do I need a separate tweeter or crossover?
A: No — the HDS 4x6" is a 2-way coaxial with an integrated 1" Mylar dome tweeter. No separate tweeter or passive crossover is required — just connect to your amplifier and go.
Q: Does the HDS 4x6" come with a grill?
A: No — the HDS 4x6" does not include a grill. Plan your mounting location and baffle design accordingly.
