Short answer: the Revel Concerta2 M16. It ranks #37 of 100 bookshelf speakers by sound quality at $600; the Definitive Technology Demand D11 ranks #44 and costs $999, so there is not much of a tradeoff to weigh.
On the Revel Concerta2 M16 side: CEA2034 spinorama shows an on-axis response that’s essentially flat from 200Hz to 10kHz, with some bass boost around 100Hz. Set against that: Harmonic distortion shows a notable peak around 80Hz and a sharp spike around 350Hz, plus the woofer appears to get a bit unhappy right before handing off to the tweeter.
What the Definitive Technology Demand D11 gets right: CEA2034 spinorama shows a mostly flat, well-controlled response - close to class-leading if not for one narrow resonance. The catch: A narrow but real ~600Hz jaggy shows up consistently in on-axis and off-axis measurements.
Buy the Revel Concerta2 M16. It ranks higher for sound quality than the Definitive Technology Demand D11 and costs less, so there is no real case for the other one.
Specifications Side By Side
| Revel Concerta2 M16 | Definitive Technology Demand D11 | |
|---|---|---|
| Price | about $600 used | $999 Discontinued |
| Ranked | #37 of 100 in Large Size Bookshelf Speakers | #44 of 100 in Large Size Bookshelf Speakers |
| Drivers | 25mm tweeter + 165mm woofer | 6.5" BDSS polypropylene woofer, 1" aluminum dome tweeter (offset), 6x10" oval passive radiator |
| Weight | 32 lbs / 14.5 kg | 17 lbs each |
| Sensitivity | 86dB | 87dB (2.83V/1m, measured, Audio Science Review) |
| Impedance | 6 ohms | 8 ohms nominal |
| Dimensions | 14.8"H x 8.6"W x 10.8"D (374.7 x 218.4 x 273.3 mm) | 13H x 7.25W x 12.5D in |
| Woofer Cabinet | ported, rear | passive radiator |
| Bass Extension (-3dB) | 60.1Hz (measured, Audio Science Review) | 80Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | - | 62Hz (measured, Audio Science Review) |
| Discontinued | - | Yes |
| Frequency Response | - | 48Hz - 24kHz (61Hz - 22kHz -3dB) (Manufacturer specified) |
| Power Handling | - | 20-200W recommended |
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- Emotiva Airmotiv XB2 vs StarkSound Beta 5
- StarkSound Beta 5 vs Monolith Encore B6
- StarkSound Beta 5 vs Monolith Encore C6
- ELAC DBR62 vs Definitive Technology Demand D11
- Definitive Technology Demand D11 vs Infinity Reference R162
The Two Speakers In Full
Revel Concerta2 M16: about $600 used
Pros: CEA2034 spinorama shows an on-axis response that’s essentially flat from 200Hz to 10kHz, with some bass boost around 100Hz. Predicted in-room response is very nice, with just extra bass and a bit of roll-off above 20kHz - the reviewer calls it “nice!” Distortion is well controlled through most of the range at both test levels.
Cons: Harmonic distortion shows a notable peak around 80Hz and a sharp spike around 350Hz, plus the woofer appears to get a bit unhappy right before handing off to the tweeter. Cumulative spectral decay (waterfall) shows some lingering resonances in the 300Hz-1kHz region. The reviewer cautions not to over-cover the cabinet/grille area with thin fabric, as it can audibly affect the top-end response.
Full Revel Concerta2 M16 review and specifications →
| Bass Extension (-3dB) | 60.1Hz (measured, Audio Science Review) |
|---|---|
| Dimensions | 14.8"H x 8.6"W x 10.8"D (374.7 x 218.4 x 273.3 mm) |
| Drivers | 25mm tweeter + 165mm woofer |
| Impedance | 6 ohms |
| Sensitivity | 86dB |
| Weight | 32 lbs / 14.5 kg |
| Woofer Cabinet | ported, rear |
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- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Revel Concerta2 M16 vs JBL HDI-1600
- Revel Concerta2 M16 vs ELAC DB63
- Revel Concerta2 M16 vs ELAC Uni-Fi Reference UBR62
- Revel Concerta2 M16 vs Emotiva Airmotiv XB2
- Revel Concerta2 M16 vs ELAC DBR62
- Revel Concerta2 M16 vs Yamaha NS-800A
- Revel Concerta2 M16 vs ELAC VELA BS 403
- Revel Concerta2 M16 vs Dynaudio Contour 20i
- See all 10 comparisons
Definitive Technology Demand D11: $999 Discontinued Amazon
Pros: CEA2034 spinorama shows a mostly flat, well-controlled response - close to class-leading if not for one narrow resonance. Distortion is well controlled and the deep cabinet lets it play loud without bottoming out except on the deepest bass content. Cabinet construction and finish are a clear step above budget speakers.
Cons: A narrow but real ~600Hz jaggy shows up consistently in on-axis and off-axis measurements. Horizontal directivity is uneven because of the offset tweeter position, giving the left and right channels slightly different off-axis energy. There’s a low-frequency rattle/noise at very deep bass levels the reviewer called “horrendous.” Discontinued; the Demand series has moved on to newer models. Discontinued.
Full Definitive Technology Demand D11 review and specifications →
| Bass Extension (-10dB) | 62Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 80Hz (measured, Audio Science Review) |
| Dimensions | 13H x 7.25W x 12.5D in |
| Discontinued | Yes |
| Drivers | 6.5" BDSS polypropylene woofer, 1" aluminum dome tweeter (offset), 6x10" oval passive radiator |
| Frequency Response | 48Hz - 24kHz (61Hz - 22kHz -3dB) (Manufacturer specified) |
| Impedance | 8 ohms nominal |
| Power Handling | 20-200W recommended |
| Sensitivity | 87dB (2.83V/1m, measured, Audio Science Review) |
| Weight | 17 lbs each |
| Woofer Cabinet | passive radiator |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Definitive Technology Demand D11 vs Yamaha NS-800A
- Definitive Technology Demand D11 vs Dynaudio Contour 20i
- Definitive Technology Demand D11 vs ELAC DBR62
- Definitive Technology Demand D11 vs ELAC Uni-Fi Reference UBR62
- Definitive Technology Demand D11 vs SVS Ultra Bookshelf
- Definitive Technology Demand D11 vs Infinity Reference R162
- Definitive Technology Demand D11 vs JBL HDI-1600
- Definitive Technology Demand D11 vs Klipsch RP-600M II