Description
Overview
The Q Acoustics QB12 is a powerful and refined subwoofer built to deliver deep, controlled bass for both movies and music. With a 12″ long-throw driver driven by a Class D amplifier, it blends dramatic low-frequency impact with musical subtlety. The sealed “infinite baffle” design and robust cabinetry ensure clean bass without port noise or coloration.
Top Key Features (and Why They Matter)
- 12″ Long-Throw Driver – Deeper bass extension with less distortion, allowing impactful low notes.
- 200 W Class D Amplifier – Efficient, powerful output with minimal heat and distortion.
- Sealed Enclosure – Gives tighter, more controlled bass and simplifies placement options.
- Reinforced Cabinet – Thick baffles, internal bracing reduce resonance and maintain clarity.
- Adjustable Spiked Feet – Stability on both carpeted and hard floors.
- Hidden Terminal Panel – Clean aesthetic and easy wiring without visible clutter.
- High Current Voice Coil (50 mm) – Better thermal control under high output use.
Technical Specifications
| Specification | Detail |
|---|---|
| Drive Unit | 305 mm (12″) long-throw cone |
| Continuous Amplifier Power | 200 W |
| Peak Amplifier Power | 400 W |
| Frequency Range | 28 Hz – 300 Hz |
| Crossover Range | 40 Hz – 250 Hz |
| Input Impedance | 13 kΩ |
| Input Sensitivity | 150 mV |
| Enclosure Type | Sealed (Infinite Baffle) |
| Cabinet Material | MDF, reinforced / braced |
| Dimensions (H × W × D) | 400 × 400 × 446 mm |
| Weight | 21.5 kg |
What’s in the Box
- QB12 Subwoofer
- Power Cable
- 4 × Spiked Feet
- 4 × Spike Locking Rings
- 4 × Spike Covers
- User Manual / Warranty Card
Recommended Use Cases & Compatibility
- Home cinema systems needing authoritative low-end impact
- High-fidelity music systems where tight, accurate bass is essential
- Integrations with Q Acoustics 3000i and Concept speaker ranges
- Rooms with moderate to large volume where subwoofer space is available
Important Notes / Limitations
- Requires sufficient space — the QB12 is large and heavy.
- Sealed design means lower extension than some ported subs in very large halls.
- Make sure your amplifier or AV receiver has adequate sub output and headroom.
Common Questions (FAQ)
Q: Can this subwoofer be placed anywhere in the room?
While sealed cabinets are more forgiving, optimal bass is achieved when placed near a front wall or corner—but avoid exact center positions.
Q: What crossover setting is ideal?
Start around 80–100 Hz and adjust downwards while listening for smooth integration with your main speakers.
Q: Does the QB12 need a special amplifier?
Not necessarily — as long as your AV receiver or amplifier includes a sub output with sufficient power headroom, it will perform well.
Warranty & Support
Covered by Q Acoustics’ standard regional warranty when purchased through authorized channels. Support includes repair, replacement parts, and technical assistance.
Trust Factors & Extras
- First subwoofer from Q Acoustics with a 12″ driver, pushing their performance envelope. :contentReference[oaicite:0]{index=0}
- Uses a 50 mm voice coil for improved thermal control under demanding usage. :contentReference[oaicite:1]{index=1}
- Sealed enclosure ensures minimal coloration in bass output.
- Elegant finishes (Gloss or Vinyl options) to match high-end speaker ranges.
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