Audio Calculators

Click "Read Full Post" for a tutorial and an advanced calculator that includes adjustments for the number of speakers, the listening distance, and the room configuration.

Use this tool to convert between power sensitivity and voltage sensitivity

• Speaker Power Sensitivity is specified as: dB SPL (1 watt, 1 meter)
• Speaker Voltage Sensitivity is specified as: dB SPL (2.83 V, 1 meter)

These values will be identical for 8-Ohm speakers, but they will be different at other impedances.

• 1 Watt into an 8-Ohm speaker will require 2.83 volts.
• 1 Watt into a 4-Ohm speaker will require just 2 volts.
• The ratio between 2.83 volts and 2 volts is 3.01 dB.

This means that if a 4-Ohm and and 8-Ohm speaker have identical efficiencies, the 4-Ohm speaker will play 3.01 dB louder with a given voltage.

Step 1 - Use this calculator to convert THD or THD+N from percent to dB (if necessary)

Step 2 - Use this calculator to compute the sound pressure level (SPL) of THD or THD+N

Click "Read Full Post" for a tutorial and a more advanced version of this calculator.