Workflow
From floor plan to proposal in one project
The design flow in the tool, step by step: import and scale a plan, place devices, check the numbers, build zones, rack and wiring, then issue the paperwork.
5 min read
Blog topic, 08
Audio design, from the heatmap to the amplifier.
How to read the level a design predicts, place speakers so it is even where people are, keep speech clear, and wire the system so it can deliver.
8 articles in this topic
Numbered by their place in the whole series.
Coverage
How to read an SPL heatmap
What decibels of sound pressure mean, how a heatmap’s colour scale works, what uniformity of ±3 dB tells you, and why coverage is drawn to the −6 dB edge.
4 min read
Coverage
How to space ceiling speakers
Spacing ceiling speakers from ceiling height, listening height and coverage angle: the circle at ear level, edge-to-edge or overlapping grids, and the count.
4 min read
Speech intelligibility
What an STI of 0.60 means
What the Speech Transmission Index measures, why 0.60 is a sensible design target under IEC 60268-16, and how reverberation, noise and layout move it.
4 min read
Acoustics
RT60 in plain words
What reverberation time is, how Sabine and Eyring estimate it from a room’s surfaces, and why a lively room changes the speaker count and the STI you can reach.
5 min read
Acoustics
Subwoofers that count where people are
Where to put subwoofers so the bass is even where people sit or stand: room modes, corner and wall positions, the level against the mains, and the checks.
4 min read
Amplifiers and wiring
Low impedance or a 70/100 V line?
When to wire speakers at low impedance and when to use a 70 V or 100 V line, with parallel loads, minimum impedance, taps, cable runs, and power and heat.
4 min read
Acoustics
Designing sound for terraces and gardens
Outdoor areas have no ceiling and few walls. How open sides and open sky change a design, how ambient noise sets the level, and what outdoor speakers need.
3 min read
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