SoundQubed HDS Series 6.5" Coaxial 2-way Speakers (pair)

Name: SoundQubed HDS Series 6.5" Coaxial 2-way Speakers (pair)
Brand: SoundQubed
Price: 69.95 USD
Availability: InStock

$69.95 $79.99

Shipping calculated at checkout.

Key features

Speaker size: 6.5″
RMS power per speaker: 50 W
Speaker impedance: 4.0 ohms
Recommended high-pass crossover: 90 Hz
Frequency response: 75 Hz–20 kHz
Sensitivity (1 W / 1 m): 85 dB

Description

Product Overview

The SoundQubed HDS Series 6.5" coaxial speakers give you a two-way speaker upgrade for 6.5" door locations, with a built-in 1" Mylar dome tweeter. Their paper cone, rubber surround, and 50W RMS power handling make them a practical starting point for a budget-conscious audio system.

Sold as a pair with grills, the HDS combines the woofer and tweeter in each speaker. Use the recommended 90 Hz high-pass crossover when setting up your system.

Key Features & Benefits

Two-way coaxial design: The integrated tweeter reproduces high frequencies without a separate tweeter installation.
Paper cone and rubber surround: These materials provide the speaker’s stated warm, natural midrange character.
50W RMS power handling: The 4-ohm speakers are rated for 50W RMS and 150W maximum power.
90 Hz recommended high-pass crossover: Set an amplifier’s built-in crossover to this frequency as recommended for the driver.
Pair with grills included: You receive two speakers and two grills for a finished installation.

Technical Specifications

Specification	Value
Nominal Diameter	6.5" / 165mm
Nominal Impedance	4 Ohms
RMS Power Handling	50W
MAX Power Handling	150W
Sensitivity (1W/1m)	85 dB
Frequency Response	75 Hz – 20 kHz
Recommended Hi-Pass Crossover	90 Hz
Number of Ways	2-Way
Sold In	Pair
Grill Included	Yes

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	226g

Thiele & Small Parameters

Parameter	Value
Equivalent Volume (Vas)	7.2L / 0.254ft³
Excursion One Way (Xmax)	2.7mm
Free Air Resonance (Fs)	78 Hz
Mechanical Factor (Qms)	3.9
Electrical Factor (Qes)	2.2
Total Factor (Qts)	1.1
Mechanical Mass (Mms)	13.8g
Mechanical Compliance (Cms)	268mm/N
BL Factor (BL)	3.62
Voice Coil Inductance (Le)	0.176mH
Cone Area (Sd)	138.8cm²
DC Resistance (Re)	3.7 Ohms
Mechanical Mass w/o Air (Mmd)	11.5g

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 (With Grill)	7.28" / 185mm
Overall Depth (With Grill)	3.28" / 83.4mm
Overall Diameter (Without Grill)	6.51" / 165.5mm
Overall Depth (Without Grill)	2.42" / 61.6mm
Front Mount Baffle Cutout	5.6" / 142mm
Mounting Depth	2" / 52mm
Motor Diameter	3.3" / 84mm

Why Choose This Product?

The HDS Series is SoundQubed’s entry-level 6.5" coaxial speaker. Its 226g barium ferrite magnet, paper cone, and integrated Mylar dome tweeter bring the woofer and high-frequency driver together in one speaker.

For a higher-rated option in the lineup, the SoundQubed HDX-CX65 is listed at 80W RMS / 240W maximum and 89 dB sensitivity. It uses a glass fiber cone and neodymium PEI tweeter.

Installation & Compatibility Notes

The stated front-mount baffle cutout is 5.6" / 142mm, and mounting depth is 2" / 52mm. Check your door’s available space and cutout before purchase. The product details describe the footprint as fitting most OEM 6.5" door locations without modification.

The HDS is rated at 4 ohms. A SoundQubed S4-100 four-channel amplifier is listed as an example pairing, with a rating of 100W x4. Set the high-pass filter at 90 Hz as recommended. No separate passive crossover is required, and each speaker has an integrated tweeter.