SoundQubed HDX Series Pro Audio 6.5" Speaker (each)

SoundQubed PA65M-8 — 6.5" Pro Audio Midrange | 300W RMS | 97 dB | Ferrite + Neodymium Hybrid Motor | 8Ω | Sold Single

The SoundQubed PA65M-8 is the 8Ω version of SoundQubed’s 6.5" pro audio midrange lineup — purpose-built for competition car audio, high-output daily drivers, and multi-driver pro audio builds where 8Ω impedance is required. Featuring a non-pressed paper cone, cloth surround, a ferrite + neodymium hybrid magnet system (30 + 3 oz), a 1.5" / 38.6mm CCAW voice coil on a glass fiber former, and an aluminum basket, the PA65M-8 delivers 300W RMS / 600W max at 97 dB sensitivity with a frequency response of 100 Hz–8 kHz at 8Ω. Sold as a single speaker — order the quantity you need for your build.

The PA65M-8 shares the same motor architecture as the PA6B-4 — ferrite + neodymium hybrid (30 + 3 oz), CCAW winding, glass fiber former, aluminum basket, and identical physical dimensions — but uses an 8Ω voice coil instead of 4Ω. This makes the PA65M-8 ideal for builds where two drivers are wired in parallel to achieve a 4Ω load, or for use with pro audio amplifiers rated at 8Ω. The 7.2mm one-way Xmax delivers serious linear excursion for a 6.5" midrange, and the Fs of 148 Hz with a recommended HPF of 160 Hz keeps it operating in its optimal midrange band.

Whether you’re building a competition SPL or SQL system, a high-output bagger build, or a multi-driver pro audio front stage requiring 8Ω drivers, the PA65M-8 delivers the output and durability to compete at the highest level.

Why Choose the SoundQubed PA65M-8?

• 300W RMS / 600W MAX @ 8Ω — Pro-grade power handling in a 6.5" midrange — built for high-output competition and demo builds.
• 97 dB Sensitivity (1W/1m) — Exceptionally high efficiency — delivers massive output with relatively modest amplification.
• 8Ω Impedance — Wire two in parallel for a 4Ω load, or use individually with a pro audio amplifier rated at 8Ω.
• Ferrite + Neodymium Hybrid Motor (30 + 3 oz) — Best of both worlds — neodymium flux density for sensitivity, ferrite thermal mass for sustained high-power performance.
• 7.2mm One-Way Xmax — Serious linear excursion for a 6.5" midrange — moves real air at high output without distortion or mechanical failure.
• 1.5" CCAW Voice Coil on Glass Fiber Former — Lightweight, thermally efficient winding on a rigid former — handles sustained high-power use without thermal compression.
• Non-Pressed Paper Cone — Low-mass, natural-sounding cone material for fast transient response and detailed midrange reproduction at high output levels.
• Aluminum Basket — Rigid, resonance-free basket construction — pro audio grade in a car audio package.

Installation & Pairing Recommendations

Crossover Configuration: The PA65M-8 is a dedicated midrange driver — always use a high-pass crossover set at 160 Hz minimum to protect the driver and keep it operating in its optimal range. For competition and high-output builds, use an active crossover or DSP to set precise HPF and LPF crossover points. A band-pass configuration (160 Hz HPF / 6–8 kHz LPF) is recommended for maximum output and driver protection.

Impedance & Wiring: The PA65M-8 is an 8Ω driver. Two PA65M-8 units wired in parallel present a 4Ω load to your amplifier — ideal for high-output stereo builds using a single amplifier channel per side. Verify your amplifier’s minimum impedance rating before wiring multiple drivers in parallel.

Amplifier Pairing: The PA65M-8 handles 300W RMS at 8Ω. Use a dedicated amplifier channel rated for at least 150–300W RMS at 8Ω. The SoundQubed Q4-2000 (325W x4) or Q4-3200 (520W x4) are excellent matches for a multi-driver pro audio front stage build.

Mounting: The PA65M-8 requires a 5.71" / 145mm baffle cutout and 2.89" / 73.5mm mounting depth. Overall diameter is 6.52" / 165.7mm, overall depth is 3.25" / 82.5mm. Motor diameter is 4.72" / 120mm. These dimensions are identical to the PA6B-4 — the only difference is impedance.

Full Specifications

General

Motor Specifications

Thiele & Small Parameters

Speaker Measurements

Frequently Asked Questions

Q: What’s the difference between the PA65M-8 and the PA6B-4?
A: The PA65M-8 and PA6B-4 are physically identical — same motor, same cone, same basket, same dimensions. The only difference is impedance: the PA65M-8 is 8Ω and the PA6B-4 is 4Ω. Choose the PA65M-8 when you need 8Ω drivers for parallel wiring configurations or pro audio amplifiers rated at 8Ω. Choose the PA6B-4 for standard 4Ω single-driver-per-channel builds.

Q: Why would I choose an 8Ω driver over a 4Ω driver?
A: Two PA65M-8 units wired in parallel present a 4Ω load to your amplifier — doubling the cone area and output capability on a single amplifier channel. This is a common configuration in competition SPL and SQL builds where maximum output from a single channel is the goal.

Q: What amplifier should I pair with the PA65M-8?
A: The PA65M-8 handles 300W RMS at 8Ω. Use a dedicated amplifier channel rated for at least 150–300W RMS at 8Ω. The SoundQubed Q4-2000 (325W x4) or Q4-3200 (520W x4) are excellent matches. Always verify your amplifier’s 8Ω power rating before purchasing.

Q: Is this sold as a pair or single?
A: The PA65M-8 is sold as a single speaker. Order quantity two for a stereo pair, or more for multi-driver competition builds.