Speaker LabBMT SYSTEM DESIGN / PRELIMINARY TOOL
Start with any speaker.
Test the system.
Find a model with AI, extract a manufacturer specification sheet, or enter the engineering data yourself—then explore coverage, SPL, and amplifier loading.
SINGLE-SPEAKER REFERENCE93.9dB SPL on axis
Selected loudspeakerJBL Control 26CT110° nominal · 89 dB sensitivity · 7.5 / 15 / 30 / 60 W taps
02
Listener plane
Coverage + SPL layout
Drag numbered speaker targets
4
30 ftJBL Control 26CT40 ft
Below targetNear targetAbove target
Color estimates combine all positioned speakers using distance, tap, sensitivity, and a simplified nominal-coverage loss. Coverage rings remain geometry references, not manufacturer polar data.
AMPLIFIER & CHANNEL LOAD
Match the amplifier to the distribution method.
Use constant-voltage tap loading or calculate parallel Low-Z impedance without mixing the two methods.
Selected amplifierCustom Power amplifier2 channels · 500 W/ch at 70 V · 250 W @ 8 Ω / 500 W @ 4 Ω
MAXIMUM DESIGN TAP / SPEAKER100.0 W
At 4 speakers per channel and a 80% design limit.
Current tap is within limit
Connected / channel120 W
Reserve / channel380 W
Total connected load240 W
Estimated cable loss-0.22 dB
WHAT THIS MODEL DOES
Useful physics, visible assumptions.
Coverage geometry
Nominal conical coverage projected from mounting height to the listener plane.
Listener SPL
Sensitivity + power gain − distance loss − simplified nominal-coverage loss.
Channel loading
70.7 V tap totals and reserve, or parallel Low-Z impedance checked against amplifier limits.