SoundQubed HDX Series Pro Audio 6.5" Speaker (each)

Name: SoundQubed HDX Series Pro Audio 6.5" Speaker (each)
Brand: SoundQubed
Price: 89.95 USD
Availability: InStock

$89.95 $99.99

Shipping calculated at checkout.

Key features

Speaker size: 6.5″
RMS power per speaker: 300 W
Speaker impedance: 8.0 ohms
Mounting depth: 2.89 in / 73.5 mm
Frequency response: 100 Hz–8 kHz
Sensitivity (1 W / 1 m): 97 dB

Description

Product Overview

Build a high-output car audio midrange system around the SoundQubed PA65M-8, a 6.5-inch pro audio speaker with an 8-ohm voice coil. It combines a ferrite and neodymium hybrid motor with 300W RMS power handling and 97 dB sensitivity.

Sold individually, this driver is intended for competition and high-output builds that call for 8-ohm drivers. Its dimensions and motor architecture match the PA6B-4, but the PA65M-8 uses an 8-ohm voice coil.

Key Features & Benefits

8-ohm impedance: Wire two speakers in parallel for a 4-ohm load, subject to your amplifier’s minimum impedance rating.
Hybrid motor: The ferrite and neodymium magnet system weighs 30 + 3 oz.
Paper cone and cloth surround: These materials form the driver’s moving assembly for midrange reproduction.
CCAW voice coil: The 1.5" / 38.6mm coil sits on a glass fiber former.
Aluminum basket: The basket provides the speaker’s mounting structure.

Technical Specifications

Specification	Value
Nominal Diameter	6.5" / 165mm
Nominal Impedance	8 Ohms
RMS Power Handling	300W
MAX Power Handling	600W
Sensitivity (1W/1m)	97 dB
Frequency Response	100 Hz – 8 kHz
Recommended Hi-Pass Crossover	160 Hz
Sold In	Single

Motor Specifications

Specification	Value
Voice Coil Diameter	1.5" / 38.6mm
VC Former Material	Glass Fiber
Winding Material	CCAW
Cone Material	Non-Pressed Paper
Dust Cap Material	Paper
Surround Material	Cloth
Basket Material	Aluminum
Basket Color	Black
Magnet Material	Ferrite + Neodymium
Magnet Weight	30 + 3 oz
Displacement Volume	0.36L / 0.012ft³

Thiele & Small Parameters

Parameter	Value
Equivalent Volume (Vas)	7.63L / 0.27ft³
Excursion One Way (Xmax)	7.2mm
Free Air Resonance (Fs)	148 Hz
Mechanical Factor (Qms)	10.21
Electrical Factor (Qes)	0.682
Total Factor (Qts)	0.639
Mechanical Mass (Mms)	10.219g
Mechanical Compliance (Cms)	0.299mm/N
BL Factor (BL)	4.991
Voice Coil Inductance (Le)	0.6814mH
Cone Area (Sd)	134.78cm²
DC Resistance (Re)	5.2 Ohms
Mechanical Mass w/o Air (Mmd)	10.423g

Speaker Measurements

Dimension	Value
Overall Diameter	6.52" / 165.7mm
Overall Depth	3.25" / 82.5mm
Front Mount Baffle Cutout	5.71" / 145mm
Mounting Depth	2.89" / 73.5mm
Motor Diameter	4.72" / 120mm

Why Choose This Product?

The PA65M-8 is the 8-ohm option in SoundQubed’s 6.5-inch pro audio midrange lineup. Its 7.2mm one-way Xmax and 148 Hz free-air resonance are relevant when planning a multi-driver system and crossover settings.

Compared with the PA6B-4, it shares the motor architecture, materials, and physical dimensions, but uses an 8-ohm voice coil instead of 4 ohms. Choose based on the load your amplifier and wiring plan require.

Installation & Compatibility Notes

Crossover: Use a high-pass crossover set at 160 Hz minimum. A band-pass setup of 160 Hz HPF and 6–8 kHz LPF is recommended in the source specifications.
Wiring: Two PA65M-8 speakers wired in parallel present a 4-ohm load. Check that your amplifier supports the resulting impedance.
Amplifier power: The speaker handles 300W RMS at 8 ohms. The source recommends a dedicated channel rated for 150–300W RMS at 8 ohms and identifies the SoundQubed Q4-2000 (325W x4) and Q4-3200 (520W x4) as pairing options.
Mounting: Check the 5.71" / 145mm baffle cutout and 2.89" / 73.5mm mounting depth against your installation space.
Quantity: Each purchase is for one speaker; order two for a stereo pair.