Limiter Threshold Calculator
Calculate safe limiter threshold to protect your speakers from damage. Prevents clipping and ensures speaker longevity.
Speaker & Amplifier Settings
Check your speaker specifications
Common: 4Ω, 8Ω, 16Ω
Preamp or mixer output gain
Max Safe Voltage
Maximum voltage before speaker damage
Safety Status
Limiter threshold is well-protected
Limiter Threshold Settings
Absolute Threshold
dBu
31.2
dBFS
13.2
Set your limiter to this threshold to protect speakers
Recommended Safe Threshold
dBu
28.2
dBFS
10.2
Includes 3dB safety headroom
How It Works
Step 1: Calculate Max Safe Voltage
V = √(P × Z)
Where P = power (watts), Z = impedance (ohms)
Step 2: Convert to dBu
dBu = 20 × log₁₀(Vrms / 0.775)
0.775V is the reference level for dBu
Step 3: Account for Amplifier Gain
Limiter Threshold = dBu - Amp Gain
Higher amp gain requires lower limiter threshold
💡 Pro Tip
Always set your limiter threshold 3-6dB below the calculated maximum to provide safety headroom. This prevents accidental clipping and protects your speakers from unexpected peaks.