SoundQubed HDX Series Pro Audio 6x9" Speaker (each)

SoundQubed PA69B-4 — 6x9" Pro Audio Midrange | 350W RMS | 99 dB | Ferrite + Neodymium Hybrid Motor | Sold Single

The SoundQubed PA69B-4 is a purpose-built 6x9" pro audio midrange driver engineered for competition car audio, high-output daily drivers, and any build where being loud and keeping up with the biggest stereos is the priority. Featuring a paper cone, cloth surround, a ferrite + neodymium hybrid magnet system, a 1.5" / 38.6mm CCAW voice coil on a glass fiber former, and an aluminum basket, the PA69B-4 delivers 350W RMS / 700W max at a staggering 99 dB sensitivity with a frequency response of 80 Hz–12.5 kHz. Sold as a single speaker — order the quantity you need for your build.

The PA69B-4’s ferrite + neodymium hybrid motor (30 + 3 oz) combines the high-flux density of neodymium with the thermal mass of ferrite — delivering exceptional sensitivity and sustained high-power performance without thermal compression. The 7.2mm one-way Xmax gives this driver serious linear excursion capability for a 6x9" midrange, allowing it to move real air at high output levels without distortion. With a Qts of 0.421 and Fs of 100 Hz, the PA69B-4 is optimized for use with a high-pass crossover at 100 Hz — keeping it in its optimal operating range and protecting it from low-frequency content that would reduce output and increase distortion.

Whether you’re building a competition SPL or SQL system, upgrading a bagger for maximum output, or building a high-efficiency daily driver that can keep up with a powerful subwoofer, the PA69B-4 is the 6x9" midrange that delivers.

Why Choose the SoundQubed PA69B-4?

• 350W RMS / 700W MAX @ 4Ω — Pro-grade power handling in a 6x9" midrange — built for high-output competition and demo builds.
• 99 dB Sensitivity (1W/1m) — Exceptionally high efficiency — delivers massive output with relatively modest amplification.
• 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 6x9" 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.
• Aluminum Basket — Rigid, resonance-free basket construction — pro audio grade in a car audio package.
• 80 Hz–12.5 kHz Frequency Response — Purpose-built midrange range — covers midbass, midrange, and upper harmonics with authority.
• Sold Single — Buy exactly what you need — order quantity two for a stereo pair.

Installation & Pairing Recommendations

Crossover Configuration: The PA69B-4 is a dedicated midrange driver — always use a high-pass crossover set at 100 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 (100 Hz HPF / 10–12 kHz LPF) is recommended for maximum output and driver protection.

Amplifier Pairing: The PA69B-4 handles 350W RMS at 4Ω. Use a dedicated amplifier channel with at least 200–350W RMS at 4Ω for best results. The SoundQubed Q4-2000 (325W x4) or Q4-3200 (520W x4) are excellent matches for a multi-driver pro audio front stage build.

Competition / Demo Build: The PA69B-4’s 99 dB sensitivity and 350W RMS power handling make it a natural choice for competition SPL and SQL builds. Pair multiple units per channel for maximum output, or use a single pair as the primary midrange in a 3-way active front stage alongside a dedicated tweeter and subwoofer system.

Mounting: The PA69B-4 requires a 6" x 8.9" / 154 x 226mm baffle cutout and 3.5" / 89mm mounting depth. Overall dimensions are 6.58" x 9.33" / 167 x 237mm, overall depth is 3.75" / 95.5mm. Motor diameter is 4.72" / 120mm. Verify your mounting location provides adequate depth clearance before purchasing.

Full Specifications

General

Motor Specifications

Thiele & Small Parameters

Speaker Measurements

Frequently Asked Questions

Q: Is the PA69B-4 a full-range speaker or a dedicated midrange?
A: It’s a dedicated pro audio midrange driver — not a full-range speaker. It’s designed to be crossed over at 100 Hz HPF minimum and used with a dedicated tweeter and subwoofer system. Always use a high-pass crossover to protect the driver and maximize output.

Q: What amplifier should I pair with the PA69B-4?
A: The PA69B-4 handles 350W RMS at 4Ω. The SoundQubed Q4-2000 (325W x4) or Q4-3200 (520W x4) are excellent matches. Use a dedicated amplifier channel per driver with an active crossover or DSP for precise crossover point management.

Q: Is this sold as a pair or single?
A: The PA69B-4 is sold as a single speaker. Order quantity two for a stereo pair.

Q: What makes the ferrite + neodymium hybrid motor special?
A: The hybrid motor combines a large ferrite magnet (30 oz) for thermal mass and sustained power handling with a neodymium top plate (3 oz) for high magnetic flux density and sensitivity. The result is a driver that delivers 99 dB sensitivity while handling 350W RMS continuously — without the thermal compression that limits pure neodymium designs at sustained high power.