Concerta M12 vs Wharfedale Diamond 225
The Diamond 225 matches the Concerta M12 on sensitivity (87 dB), impedance (8Ω), woofer (6.5"), and ways (2).
AI-generated product photo — not official manufacturer imagery.
LoudspeakersBookshelf SpeakersDiscontinued
Estimated price (community-sourced)
$400
Around — community and catalog average, updates slowly
About the Concerta M12
The Revel Concerta M12 is a compact two-way bookshelf loudspeaker designed for outstanding timbral accuracy and wide frequency response. It features a 6-1/2" micro-ceramic composite (MCC) cone woofer with a rigid Organic Ceramic Composite cone and a 1" anodized aluminum dome tweeter housed in a CAI waveguide for optimal dispersion and dynamic range. The speaker uses a steep-slope, high-order crossover at 2.5kHz and is built with a heavily braced MDF enclosure to reduce resonance. It has an in-room frequency response of ±1.5 dB from 65Hz to 15kHz, with low-frequency extension down to -10 dB at 41Hz. The nominal impedance is 8 ohms, sensitivity is 87 dB SPL at 2.83V/1m, and it is recommended for amplifiers rated between 20 and 150 watts. The M12 is available in black ash finish (cherry discontinued) and can be optionally mounted on a floor pedestal stand that adds 25.4" to its height.
Specifications
Transducer Specifications
Driver and acoustic performance characteristics
- Sensitivity
- 87 dB SPL @ 1W/1m
- Impedance
- 8Ω
- Frequency Response
- 41 Hz - 15 kHz
- Power Handling
- 150W
- Min. Amplifier Power
- 20W
- Max. Amplifier Power
- 150W
Speaker Design
Driver configuration and enclosure design
- Configuration
- 2-way
- Driver Type
- micro-ceramic composite
- Driver Size
- 6.5"
- Driver Count
- 2
- Enclosure Type
- sealed
- Crossover Frequency
- 2.5 kHz
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 226 × 351 × 295 mm (W × H × D)
- Weight
- 8.7 kg (19 lbs)
- Available Colors
- Black ash
Key Specifications
Sensitivity: 87 dB
Impedance: 8Ω
Frequency: 41-15000 Hz
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions