SoundQubed HDX Series 5x7" Coaxial 2-way Speakers (pair)

Name: SoundQubed HDX Series 5x7" Coaxial 2-way Speakers (pair)
Brand: SoundQubed
Price: 109.99 USD
Availability: InStock

$109.99 $129.99

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Key features

Speaker size: 5×7″
RMS power per speaker: 70 W
Speaker impedance: 4.0 ohms
Mounting depth: 2.3 in / 58.5 mm
Frequency response: 40 Hz–20 kHz
Sensitivity (1 W / 1 m): 91 dB

Description

Product Overview

Bring clear, full-range sound to a 5x7-inch speaker location with the SoundQubed HDX-CX57 2-way coaxial speakers. Their glass fiber woofer cone and integrated neodymium PEI tweeter combine midrange and high-frequency sound in one speaker. Each pair includes grilles.

The 4-ohm HDX-CX57 is designed for standard 5x7-inch factory locations. Check your available cutout and mounting depth before planning an installation.

Key Features & Benefits

70W RMS power handling: Match your amplifier to the speaker’s RMS rating for a suitable system setup.
91 dB sensitivity: The stated sensitivity is measured at 1W/1m.
Glass fiber cone and rubber surround: These woofer materials form the speaker’s midrange and bass-driving assembly.
Integrated 1-inch tweeter: The neodymium tweeter uses a PEI diaphragm, so high-frequency sound comes from the coaxial speaker.
5x7-inch format: The specified baffle cutout is 4.9 x 7 inches, with a mounting depth of 2.3 inches.
Pair with grilles: The package includes two speakers and grilles.

Technical Specifications

Specification	Value
Nominal Diameter	5x7" / 127x177mm
Nominal Impedance	4 Ohms
RMS Power Handling	70W
MAX Power Handling	210W
Sensitivity (1W/1m)	91 dB
Frequency Response	40 Hz – 20 kHz
Recommended Hi-Pass Crossover	60 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	KSV
Winding Material	EISV
Cone Material	Glass Fiber
Surround Material	Rubber
Basket Material	Steel
Basket Color/Finish	Matte Black
Magnet Material	Barium Ferrite
Magnet Weight	410g

Thiele & Small Parameters

Parameter	Value
Equivalent Volume (Vas)	8.66L / 0.305ft³
Excursion One Way (Xmax)	2.7mm
Free Air Resonance (Fs)	68 Hz
Mechanical Factor (Qms)	7.04
Electrical Factor (Qes)	1.28
Total Factor (Qts)	1.08
Mechanical Mass (Mms)	16.1g
Mechanical Compliance (Cms)	258.7mm/N
BL Factor (BL)	4.66
Voice Coil Inductance (Le)	0.228mH
Cone Area (Sd)	153.5cm²
DC Resistance (Re)	3.5 Ohms
Mechanical Mass w/o Air (Mmd)	14g

Tweeter Specifications

Specification	Value
Nominal Diameter	1" / 25.5mm
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)	6x8.9" / 154x226mm
Overall Depth (With Grill)	2.87" / 73mm
Overall Diameter (Without Grill)	5.5x8.6" / 140x220mm
Overall Depth (Without Grill)	2.85" / 72.5mm
Front Mount Baffle Cutout	4.9x7" / 125x179.5mm
Mounting Depth	2.3" / 58.5mm
Motor Diameter	3.70" / 94mm

Why Choose This Product?

The HDX-CX57 brings a woofer and tweeter together in a 2-way coaxial design. That gives you one 5x7-inch speaker assembly for the location, rather than a separate tweeter installation. Its stated frequency response is 40 Hz–20 kHz, and its glass fiber cone, rubber surround, and 410g barium ferrite magnet describe the woofer’s construction.

The speaker is rated at 70W RMS and 210W maximum at 4 ohms. The source lists SoundQubed four-channel amplifiers as pairing options, including the Q4-150ABv2 (150W x4), Q4-2000 (325W x4), and S4-100 (100W x4). Match amplifier output and settings to the speaker’s ratings.

Installation & Compatibility Notes

Check the mounting location against the 4.9 x 7-inch baffle cutout and 2.3-inch mounting depth. The listed overall depth is 2.85 inches without the grille and 2.87 inches with it, so confirm the available space in your door or dash.

The recommended high-pass crossover is 60 Hz. The installation guidance recommends setting an amplifier’s high-pass filter between 60 and 80 Hz. The integrated tweeter does not require a separate tweeter installation or passive crossover.

Frequently Asked Questions

What power rating should I use when matching an amplifier?

The HDX-CX57 is rated for 70W RMS and 210W maximum at 4 ohms. The RMS rating is the relevant figure to consider when matching continuous amplifier output.

Does this coaxial speaker need a separate tweeter?

No. It has an integrated 1-inch neodymium tweeter with a PEI diaphragm.

What crossover setting is recommended?

The listed recommended high-pass crossover is 60 Hz. The installation guidance suggests an amplifier high-pass setting of 60–80 Hz.

What should I measure before ordering?

Check that the location accommodates the 4.9 x 7-inch baffle cutout and 2.3-inch mounting depth. Also account for the listed overall dimensions with or without the grille.