- 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"
Accepted Payment Methods at Big Jeff Audio
At Big Jeff Audio, we strive to make your shopping experience as smooth as possible by offering a wide variety of payment options. Below is a complete list of the payment methods we accept:
Credit and Debit Cards
- Visa
- Mastercard
- American Express
- Discover
- Diners Club
Digital Wallets
- Amazon Pay
- Apple Pay
- Meta Pay (formerly Facebook Pay)
- Google Pay
- Shop Pay
- PayPal
International Payment Methods
Bank Transfers
Financing Options
We also offer financing options to make purchasing easier. Learn more about our financing options here.
- Klarna
- Affirm
- Sezzle
- Snap
- Acima
- Tiptop
If you have any questions or need assistance with payments, feel free to reach out to us at info@bigjeffaudio.com or call us at 737-BIG-JEFF.
Shipping Options and Delivery Time
Do You Offer Expedited Shipping?
Yes! At checkout, you can select from different shipping options:
- Standard Shipping: Free for orders over $100.
- Expedited Shipping: Available at an additional cost, calculated based on the weight and destination of your order.
How Long Does Delivery Take?
- Handling Time: Most orders are processed and shipped within 1 business day after receiving cleared payment. Occasionally, additional handling time may be required, but we’ll notify you if that’s the case.
- Standard Shipping: Typically takes 3-5 business days, though delivery may be affected by extreme weather or holidays.
What Happens If My Package Is Undeliverable?
If your package is refused or marked undeliverable and returned to us by the carrier, you’ll need to pay the full shipping cost to have the package resent. Alternatively, we can refund your order, minus the cost of shipping.
Why Can’t I Track My Order?
If you're having trouble tracking your order:
- Make sure you’ve received the shipping confirmation email with the tracking number.
- Log into your account on our website and use the “Check Your Order Status” button.
- If the issue persists, please refer to our detailed guide on tracking your order or contact our customer service team for further assistance.
