SoundQubed HDS Series 4x6" Coaxial 2-way Speakers (Pair)

Name: SoundQubed HDS Series 4x6" Coaxial 2-way Speakers (Pair)
Brand: SoundQubed
Price: 59.95 USD
Availability: InStock

$59.95 $69.99

Shipping calculated at checkout.

Key features

Speaker size: 4×6″
RMS power per speaker: 45 W
Speaker impedance: 4.0 ohms
Mounting depth: 1.75 in / 44.5 mm
Frequency response: 105 Hz–20 kHz
Sensitivity (1 W / 1 m): 83 dB

Description

Product Overview

Give your factory 4x6-inch speaker location a two-way coaxial upgrade with the SoundQubed HDS Series 4x6" Coaxial Speakers. Each speaker combines a paper cone and rubber surround with an integrated 1-inch Mylar dome tweeter for midrange and treble reproduction in a compact footprint.

The HDS Series means Heavy Duty Street Series. This pair is designed for 4x6-inch dash or door locations, with a recommended 120 Hz high-pass crossover.

Key Features & Benefits

45W RMS power handling: Pair the 4-ohm speakers with a suitable amplifier for a powered stereo upgrade.
Integrated two-way design: The 1-inch Mylar dome tweeter adds high-frequency reproduction without a separate tweeter installation.
Paper cone and rubber surround: These materials support the speaker’s stated natural midrange character.
Compact 4x6-inch format: The dimensions are intended for factory 4x6-inch dash and door locations.
Sold as a pair: Two speakers are included for a stereo installation.
120 Hz recommended high-pass crossover: Filtering below this point helps protect the compact driver from low-frequency bass.

Technical Specifications

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

Why Choose This Product?

The HDS 4x6-inch coaxial is a compact speaker focused on upper midrange and treble, rather than extended bass. Its 115 Hz free air resonance and recommended 120 Hz high-pass crossover make crossover setup an important part of the system. The built-in tweeter keeps the high-frequency driver in the coaxial speaker, while the paper cone and rubber surround provide the stated cone and suspension materials.

The 83 dB sensitivity rating is measured at 1W/1m. The speakers can work with head-unit power, while the product details note that they perform best with proper amplification.

Installation & Compatibility Notes

Check the mounting area for the 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, with an overall depth of 2.26" / 57.6mm. Confirm your dash or door panel’s available space before installation.

Use a high-pass crossover set at 120 Hz as recommended. The product details cite the SoundQubed S4-100, rated at 100W x4, as an amplifier pairing and recommend setting the amplifier’s high-pass filter to 120 Hz. No grille is included, so plan the mounting location accordingly.

Frequently Asked Questions

What do the 45W RMS and 135W maximum ratings mean?

The speakers are rated for 45W RMS and 135W maximum power handling, at a nominal impedance of 4 Ohms.

Do these speakers need a separate tweeter or passive crossover?

No. Each is a two-way coaxial speaker with an integrated 1-inch Mylar dome tweeter. The product details state that a separate passive crossover is not required.

What crossover setting is recommended?

A 120 Hz high-pass crossover is recommended. The HDS 4x6-inch has a 115 Hz free air resonance and is intended for upper midrange and treble reproduction, not extended bass output.