Short answer: the Definitive Technology Demand D11 for a cleaner response, the Infinity Reference R162 for value. The D11’s CEA2034 spinorama is mostly flat and well controlled, with only a narrow but real 600Hz jaggy on and off axis. The R162 shows good directivity and blended early reflections that need little room treatment, but it is elevated above 3kHz, adding brightness plus a 700Hz resonance and distortion near the crossover.
Buy the Definitive Technology Demand D11 only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, start with the AsciLab C6B instead.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| Definitive Technology Demand D11 | Infinity Reference R162 | |
|---|---|---|
| Price | $999 per pair Discontinued | $500 per pair Discontinued |
| Ranked | #59 of 134 in Large Size Bookshelf Speakers | #67 of 134 in Large Size Bookshelf Speakers |
| Bass Extension (-3dB) | 60.1Hz (measured, Audio Science Review) | 67.4Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 46.3Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) | 41.9Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
| Drivers | 6.5” BDSS polypropylene woofer, 1” aluminum dome tweeter (offset), 6x10” oval passive radiator | 1” CMMD tweeter with waveguide, 6.5” CMMD woofer |
| Dimensions | 13H x 7.25W x 12.5D in | 15.5”H x 7.9”W x 11.2”D (394 x 200 x 285 mm) |
| Weight | 17 lbs (7.7 kg) each | 17.6 lbs (8 kg) each |
| Frequency Response | 48Hz - 24kHz (61Hz - 22kHz -3dB) (Manufacturer specified) | 49Hz - 22kHz (Manufacturer specified) |
| Sensitivity | 87dB (2.83V/1m, measured, Audio Science Review) | 87dB (2.83V/1m, measured, Audio Science Review) |
| Impedance | 8 ohms nominal | 8 ohms nominal |
| Power Handling | 20-200W recommended | - |
| Woofer Cabinet | passive radiator | ported |
| Spinorama Preference Score | 4.12 (spinorama.org) | 5.07 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 6.48 (spinorama.org) | 7.26 (spinorama.org) |
| DIY Kit | No | No |
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Prices on this page were last checked October 2, 2026 at 10:18 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Speakers In Full
Definitive Technology Demand D11: $999 per pair Discontinued Amazon eBay
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. Measured bass extension of 60.1Hz (-3dB), with a measured sensitivity of 87dB.
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.
Full Definitive Technology Demand D11 review and specifications →
| Bass Extension (-10dB) | 46.3Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
|---|---|
| Bass Extension (-3dB) | 60.1Hz (measured, Audio Science Review) |
| DIY Kit | No |
| Dimensions | 13H x 7.25W x 12.5D in |
| 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) |
| Spinorama Preference Score | 4.12 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 6.48 (spinorama.org) |
| Weight | 17 lbs (7.7 kg) each |
| Woofer Cabinet | passive radiator |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Definitive Technology Demand D11 vs Yamaha NS-800A
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- Definitive Technology Demand D11 vs Dynaudio Contour 20i
- Definitive Technology Demand D11 vs ELAC Uni-Fi Reference UBR62
- Definitive Technology Demand D11 vs SVS Ultra Bookshelf
- Definitive Technology Demand D11 vs Revel Concerta2 M16
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Infinity Reference R162: $500 per pair Discontinued eBay
Pros: CEA2034 spinorama shows good directivity with wide, consistent horizontal and vertical response, and blended early reflections that need little room treatment. 1” CMMD waveguide tweeter and 6.5” CMMD woofer, 85.5dB sensitivity. Measured bass extension of 67.4Hz (-3dB), with a measured sensitivity of 87dB.
Cons: Elevated output above 3kHz adds brightness, with a resonance around 700Hz and some distortion near the crossover point. EQ or a simple inline tweeter resistor can tame the treble; the reviewer still called it a very enjoyable system for the price. Discontinued.
Full Infinity Reference R162 review and specifications →
| Bass Extension (-10dB) | 41.9Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
|---|---|
| Bass Extension (-3dB) | 67.4Hz (measured, Audio Science Review) |
| DIY Kit | No |
| Dimensions | 15.5”H x 7.9”W x 11.2”D (394 x 200 x 285 mm) |
| Drivers | 1” CMMD tweeter with waveguide, 6.5” CMMD woofer |
| Frequency Response | 49Hz - 22kHz (Manufacturer specified) |
| Impedance | 8 ohms nominal |
| Sensitivity | 87dB (2.83V/1m, measured, Audio Science Review) |
| Spinorama Preference Score | 5.07 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 7.26 (spinorama.org) |
| Weight | 17.6 lbs (8 kg) each |
| Woofer Cabinet | ported |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Infinity Reference R162 vs SVS Ultra Bookshelf
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