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Calcimator

Sound System Sizing Calculator

Size a sound system for your event with speaker count, subwoofers, monitors, and amplifier power based on venue size and audience.

Inputs

Results

Total Wattage Needed

1,500W

≈ 25 laptops

Main Speakers

5

Subwoofers3
Stage Monitors10
Delay Speakers0
Amplifier Power (W)2,250W
Coverage per Speaker (°)72°
Estimated Rental Cost$6,800.00
How to Use This Calculator
  1. Enter Venue Area (sq ft) and Audience Size.
  2. Toggle Outdoor (open-air requires significantly more power than indoor).
  3. Toggle Live Music vs. Speech-only — live music requires 3-5x more wattage.
  4. Review Total Wattage Needed, Main Speakers, Subwoofers, Monitors, and Delay Speakers.
  5. Cross-reference wattage with available venue power circuits before renting or purchasing equipment.

How the result changes with Audience Size

Audience SizeTotal Wattage NeededMain Speakers
10,00150,005W143
35,001175,005W501
65,000325,000W929
90,000450,000W1,286

What each input means

Venue Area (sq ft)
Total venue floor area in square feet
Audience Size
Expected number of attendees
Outdoor (1=Yes, 0=No)
Outdoor events need 50-100% more power (no wall reflections)
Live Music (1=Yes, 0=Speech)
Music needs 3-5x more wattage than speech-only

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Venue Area (sq ft) = 5000, Audience Size = 300, Outdoor (1=Yes, 0=No) = 0, Live Music (1=Yes, 0=Speech) = 1 = 4 input(s) provided
  2. Calculate Total Wattage Needed
    Total Wattage Needed
    1500 = 1500
  3. Calculate Main Speakers
    Main Speakers
    5 = 5
  4. Calculate Subwoofers
    Subwoofers
    3 = 3
  5. Calculate Stage Monitors
    Stage Monitors
    10 = 10

Engine last updated .

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