KEF / 💥 Subwoofer

KEF Reference 8b Subwoofer

Name: KEF Reference 8b Subwoofer
Brand: KEF
SKU: SP3868BA
Price: 6.000.00 EUR
Availability: InStock

€6.000,00 EUR

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🚚Estimated insured delivery: 23 Feb 2026 – 25 Feb 2026 LV · LT · EE

🚚 Toimitus 1-4 päivässä Baltian maissa. 2-8 päivää EU:ssa
💰 14 päivän palautus
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Color Deep Piano Black

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Toimitustapa: Normaali
Toimituskulut:
EU 25€
LT, EST 6€
LV 3€
RU, USA 200€
Muut maat 200€
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🧾 Overview

The KEF Reference 8b Subwoofer is a flagship, high-performance active subwoofer engineered to produce exceptionally deep and controlled bass with minimal distortion. Built around twin long-throw 228 mm (9-inch) drivers driven by dual 500 W Class D amplifiers in a force-cancelling, heavily braced enclosure, it delivers refined low-frequency extension and effortless impact for music and home cinema systems.

✅ Key Features

✅ Twin 228 mm (9-inch) long-throw subwoofer drivers for deep, authoritative bass
✅ Dual 500 W Class D amplifiers with DSP control for precision and low distortion
✅ Force-cancelling back-to-back driver configuration for reduced cabinet vibration and cleaner output
✅ Variable low-pass filter with adjustable frequency (40 Hz–160 Hz) and slope (12 dB/18 dB/24 dB per octave)
✅ LFE mode option with dedicated configuration for home theatre integration
✅ Multiple input options: balanced XLR, RCA phono, and speaker-level inputs
✅ High maximum output of 110 dB (peak SPL at 1 m, 50 Hz) for dynamic impact
✅ Hand-built enclosure in Deep Piano Black with inert, braced structure

📊 Technical Specifications ▼

Parameter	Value
Type	Active force-cancelling subwoofer
Drive Units	2 × 228 mm (9-inch) long-throw LF drivers
Amplifier	2 × 500 W Class D with DSP control
Frequency Range (free field, −6 dB)	18 Hz
Frequency Response (±3 dB)	24 Hz at 90 dB output in free space
Maximum Output	110 dB (peak SPL @ 1 m, 50 Hz)
Inputs	Balanced XLR; RCA phono; Speaker-level
Link Out	RCA phono socket
Variable Low-Pass Filter	40 Hz – 160 Hz; slopes: 12 dB/18 dB/24 dB/oct; LFE mode
Net Internal Volume	23 L
Weight	34 kg
Dimensions (H × W × D)	398 × 365 × 429 mm
Finish	Deep Piano Black
Power Requirements	100 V – 120 V / 220 V – 240 V ~50/60 Hz
Power Consumption	1000 W

📦 What’s in the Box

📦 KEF Reference 8b Subwoofer (1 unit)
🔌 Power cable (region-specific)
📖 Owner’s manual and documentation pack
📦 Warranty card

🔄 Compatibility

The Reference 8b is compatible with high-end stereo and home theatre systems: connect via balanced XLR, unbalanced RCA, or speaker-level inputs. The variable low-pass filter and LFE mode allow integration with AV receivers, pre/pro processors, and amplifiers. Ideal for both music and cinematic bass roles when paired with high-performance loudspeakers.

📦✈️ Shipping & Returns

📦 Insured worldwide delivery
🔄 14-day return policy
🛡️ 2-year EU warranty

📝 Reviews

“Even for its price, the Reference 8b delivers deep, tight bass with great control in both music and movies.” — AVForums user review

“A refined subwoofer with excellent build quality and versatility of inputs; integrates well in reference systems.” — What Hi-Fi community comment

“Able to reach 110 dB with authority, it adds serious low-end weight without sounding muddy.” — Home Theater Enthusiast forum discussion

⚠️ Warning

⚠️ Warning: The Reference 8b Subwoofer may cause sudden rearrangement of furniture, unexpected bass-shaking dance sessions at 2 a.m., and an irresistible urge to measure room modes with a ruler and SPL meter. You have been warned.