DUO SD is a semi-active horn loudspeaker with a focused single-drive bass section for listeners who want dynamics, spatial presence and carefully planned system integration.
The product is best understood as a coordinated combination of horn geometry, drivers, electronics and cabinet design rather than through one isolated feature. It offers classic horn principles in a concentrated system architecture. The technical data below comes from the verified product dataset; all editorial wording on this shop page has been written specifically for this catalogue.
DUO SD: purpose in the listening room
A horn system responds clearly to placement, listening distance and the acoustic environment. We therefore treat DUO SD as part of a complete system. The existing source, signal routing and required listening level all influence how the product should be installed. Careful planning reduces later corrections and ensures that the documented technical capabilities translate into a coherent real-world setup.
- The architecture of DUO SD is assessed using the documented specifications.
- Placement and connections are related to the intended room before an order is confirmed.
- Colour and material choices are selected as part of the interior concept.
- Delivery and commissioning are prepared for the product’s size and system scope.
Selection, consultation and long-term ownership
The practical objective is to match the loudspeaker carefully to the room and electronics. This requires realistic information about available floor space, the listening position and existing equipment. We recommend documenting these points before the configuration is completed, producing an order based on verified requirements rather than assumptions.
Long-term ownership also benefits from a transparent system structure. Sources and accessories should remain replaceable, while the loudspeaker, cabinet and central acoustic components can be treated as durable investments. This approach supports maintenance, service and future system development. Questions about compatibility or variants are resolved against the exact configuration before approval.
Technical data
SYSTEM DATA
| Frequency range satellite | 170-28,000 Hz |
|---|---|
| Frequency range subwoofer | 18-350 Hz |
| Power handling | 100 Watt |
| Sensitivity (1 Watt/1 m) | > 107 dB |
| Crossover frequencies | 170/3,500 Hz |
| Nominal impedance | 18 Ohm |
| Recommended amplifier power | > 10 Watt |
| Recommended room size | > 20 sqm |
| Coplanar driver alignment | yes |
| OmegaDrive | yes |
| AirGate | yes |
| NatureCap incl. PolarizationPlus circuitry | yes |
HORN
| Horn type | spherical horn |
|---|---|
| Horn aperture angle | 180 degrees |
| Horn diameter midrange | 670 mm |
| Horn diameter tweeter | 200 mm |
HORN DRIVERS
| Diameter midrange | 170 mm / 7 inches |
|---|---|
| Diameter tweeter | 25 mm / 1 inch |
BASS DRIVER
| Driver size | 300 mm / 12 inches |
|---|---|
| Number of drivers | 1 x XB12 |
| Voice coil diameter | 153 mm |
| Flux density | 1.15 Tesla / 480 mm |
| Pole plate | low carbon steel |
| Membrane material | Paper/carbon fiber compound |
BASS AMPLIFIER
| Output power (RMS) | 1 x 500 Watt |
|---|---|
| Digital crossover | DSP |
| Equalizer | 8 BAND EQ |
| Digital room adjustment | yes |
| Inputs | 1 x SPKR + 1 x XLR |
ITRON ELECTRONICS
| iTRON voltage/current converter technology | patented |
|---|---|
| Fully balanced circuit | yes |
| Single-ended circuit | yes |
| Zero feedback | yes |
| Without negative feedback | yes |
| Power | 2 x 100 Watt |
MODULAR STRUCTURE
| High Performance Multi Contact Connector | yes |
|---|---|
| Semi-active version | yes |
| Fully active version with iTRON amplifier | yes |
DIMENSIONS/WEIGHT
| Dimensions width | 670 mm |
|---|---|
| Dimensions depth | 652 mm |
| Dimensions height (+/- 10 mm) | 1,552 mm |
| Weight | 94.0 kg |
Buy DUO SD
Select the available finish in the configurator. Before ordering, we can review the connection concept, placement, delivery route and preferred surface together. This keeps the product page useful as a decision record and helps ensure that the ordered variant suits its intended application.