Stele Lucis — specifications
Design figures, not yet measured.
Stele Lucis does not have a finished piece yet. What follows comes from calculation and from the component datasheets: we say so up front, not in small print at the bottom.
The system
- Configuration
- single full-rangeno crossover
- Driver diameter
- 80 mm
- Loading
- two chambers in series
- Extension
- 81 Hz−3 dB
- Nominal impedance
- 8 Ω
- Sensitivity
- 85 dBof the driver, 1 W / 1 m — see the notes
- Recommended power
- 10 – 30 W
The light
- Source
- integrated LED9.9 W
- Output
- 677 lm
- Temperature
- 2850 → 1800 Kwarms as it dims
- Colour rendering
- CRI > 95
- Beam
- 46°adjustable ± 20°
- Dimming
- 1-10 V dimmable
- Power supply
- external driverextra-low voltage
Materials
- Uprights and ring
- natural marblehoned
- Base
- natural marblehoned
- Resonance chamber
- birchhand-turned
- Structural core
- stainless steel
- Spot ring
- anodised gold
Dimensions
- Height
- 1256 mm
- Driver axis
- 1136 mmfrom the floor
- Width · depth
- 320 · 381 mm
- Mass
- 41 kgeach · 82 kg the pair
- Signal connection
- isolated binding postsbanana or spade
- Light connection
- dedicated connector
How to read these numbers
Three figures to read properly.
On these being design figures
Every figure above comes from the volume calculation, the tuning of the two chambers and the component datasheets. None has been measured on a finished unit. When the first piece exists, these pages will change — and we will say what changed.
On the 85 dB
That is the sensitivity of the driver, at the standard condition of one watt at one metre. In the finished system a network in the base compensates for the loss every narrow baffle has in the lower midrange: it costs a few decibels and gives them back as balance. Without it the piece would sound bright and thin — and no amount of stone saves a thin loudspeaker.
On the 81 Hz
An eight-centimetre driver in two litres reaches that far and no further. It is not a hidden limit: it is why the line includes a dedicated subwoofer, designed to work with this pair. Anyone listening to voice, strings and piano can do without it; anyone listening to organ and double bass cannot.
Before ordering.
Stele Lucis is built to order, one at a time.
Every unit is cut, turned and assembled individually, and the veining of the marble never repeats. Times and terms are agreed beforehand: write to us and we will talk it through.