B2 Audio 6.5" Component Passive Crossover REF SQ 2-Way

B2 Audio 6.5" Component Passive Crossover REF SQ 2-WayAudiophile Reference Quality Experience breathtaking sound with the B2 Audio REFSQ61, engineered for pure sound quality and elite daily setups. Premium Construction Multi layer carbon fiber 6. 5" mid woofers deliver tight, dynamic midbass, paired with ultra accurate 1" ceramic dome tweeters. Bi Amp Crossover Design Includes 2 way passive crossovers for precision tuning and enhanced control; perfect for DSP or passive SQ builds. High End Materials

• Audiophile Reference Quality – Experience breathtaking sound with the B2 Audio REFSQ61, engineered for pure sound quality and elite daily setups.
• Premium Construction – Multi-layer carbon fiber 6.5" mid-woofers deliver tight, dynamic midbass, paired with ultra-accurate 1" ceramic dome tweeters.
• Bi-Amp Crossover Design – Includes 2-way passive crossovers for precision tuning and enhanced control; perfect for DSP or passive SQ builds.
• High-End Materials – Features neodymium motors, gold-plated terminals, CNC aluminum baskets, and vented pole pieces for superior efficiency.
• Competition-Ready Performance – Built for competitors and audiophiles seeking unmatched tonal accuracy, imaging, and musical detail.

B2 Audio 2 Way 6.5" REF SQ Series Component Passive Crossover

This Listing Includes:

• (2) 6.5" Carbon Fiber Cone Mid-woofers


• (2) 1" Ceramic Dome Tweeters


• (2) Passive 3-Way Crossovers

Experience breathtaking clarity and full-spectrum precision with the B2 Audio REFSQ61 Reference Series 2-Way Component Set, engineered for competition-level sound quality and elite daily setups.

This refined system combines powerful, musical 6.5" mid-woofers with ultra-responsive 1" ceramic dome tweeters, tuned to deliver a smooth and coherent soundstage with pinpoint imaging. The REFSQ61 is designed for those who demand exceptional realism, low distortion, and linear dynamics in every frequency range.

Built with multi-layer carbon fiber cones, FEA-optimized neodymium motors, and gold-plated CNC aluminum baskets, this set blends stunning aesthetics with uncompromising performance. Whether you’re running a fully passive setup or integrating with a DSP, the REFSQ61 offers flexibility, control, and the unmistakable accuracy of B2 Audio’s Reference Series.

Features

• 6.5" multi-layer carbon fiber cones for strength, control, and musicality


• 1" ceramic dome tweeters for ultra-accurate, delicate high frequencies


• FEA-optimized neodymium motors for precision and efficiency


• Non-conductive TIL voice coil formers for damping control


• Gold-plated top plates, CNC aluminum baskets, and trim rings


• Vented baskets and pole pieces for thermal and acoustic efficiency


• Designed for high-end 2-way SQ systems or DSP-integrated builds

Crossover Configuration

This set includes a 2-way bi-amp crossover, designed to let you run the woofer and tweeter on separate amplifier channels for enhanced control and fine-tuning. Perfect for sound quality (SQ) enthusiasts who want to achieve exceptional imaging and balance.

Use it in a traditional passive configuration or pair with a DSP for active tuning flexibility.

Component Specifications

6.5" Midwoofer:

• Max Power: 100W


• RMS Power: 70W


• Impedance: 4 Ohm


• Voice Coil: 1.4" (35.5 mm)


• Cone: Multi-layer Carbon Fiber


• Magnet: High-Density Ferrite


• Frequency Response: 50 Hz – 10 kHz


• Sensitivity: 87.6 dB


• Unit Weight: 3.74 lbs (1700g)

1" Ceramic Dome Tweeter:

• Max Power: 75W Peak / 25W RMS


• Impedance: 3.0 Ohm


• Voice Coil: 1.0" (25.4 mm)


• Magnet: Internal dual neodymium


• Dome Material: Ceramic


• Frequency Response: fs ~ 20 kHz


• Sensitivity: 86.0 dB


• Unit Weight: 150g

Dimensions:

Mid-woofers

• Mounting Depth: 2.93" (74.5 mm)


• Cutout Diameter: 5.31" (135 mm)


• Overall Diameter: 6.5" (165 mm)

Tweeters

• Mounting Depth: 1.1" (28 mm)


• Cutout Diameter: 1.79" (45.4 mm)


• Overall Diameter: 2.24" (57 mm)

Crossovers:

• Length: 4.75"


• Width: 4.75"


• Height:1.25"