Amplifier Output Calculator

by John Siau November 23, 2022 1 min read

Amplifier Output Calculator
Speaker Impedance: Ohms
Power into Above Load: Watts
RESULTS
Output Level: dBu
Output Voltage: Volts RMS
Peak Voltage: Volts Peak
Volts Peak to Peak
Output Current: Amps RMS
Peak Current: Amps Peak
Amplifier Output Noise Calculator
Rated Power into 8 Ohms: Watts
Signal to Noise Ratio (SNR): dB
RESULTS
Output Level: dBu
Output Voltage: Volts RMS
Output Noise Level: dBu
Output Noise Voltage: uV RMS
SNR at 1W Output: dB
Read More

THD+N Audibility Calculator

by John Siau November 16, 2022 4 min read

THD+N AUDIBILITY CALCULATOR
THD+N: dB
Speaker Sensitivity: dB SPL (2.83 V, 1 M)
Amplifier Power Per Channel into 8 Ohms: Watts
Distance from Speaker(s): meters
Number of Speakers: One Speaker
Two Speakers
Room Configuration: Anechoic Chamber or Large Open Space
Typical Listening Room
Speakers mounted on or in front wall
CONTRIBUTING FACTORS
Gain from amplifier: dB (relative to 2.83 V)
Gain from single loudspeaker: dB
Gain from multiple loudspeakers: dB
Loss due to distance: dB (relative to 1 meter)
Gain from room reflections: db (typical - may vary)
RESULTS
Peak Music Level: dB SPL (at listening position)
Peak THD+N Level: dB SPL (at listening position)
AUDIBILITY
THD+N is absolutely inaudible if THD+N SPL level is negative.
THD+N may be audible if THD+N SPL level is positive.
Read More

SNR to Output Noise Calculator

by John Siau November 16, 2022 1 min read

SNR to Output Noise Calculator
Output Level: dBu
Signal to Noise Ratio (SNR): dB
RESULTS
Output Noise Level: dBu
Output Noise Voltage: uV
SNR to Output Noise Calculator
Output Voltage: Vrms
Signal to Noise Ratio (SNR): dB
RESULTS
Output Signal Level: dBu
Output Noise Level: dBu
Output Noise Voltage: uV
Read More

Uncorrelated Noise Summation

by John Siau November 15, 2022 3 min read

Noise Summation
Noise Level 1: dB
Noise Level 2: dB
RESULTS
Noise Sum: dB
Units may be dBFS, dBSPL, dBV,
dBu, dBm, dBW,
or dB relative to full output.
(All units must match)
Uncorrelated Noise Only
Noise Voltage Summation
Noise Voltage 1:
Noise Voltage 2:
RESULTS
Noise Voltage Out:
Units may be V, mV or uV
(All units must match)
Uncorrelated Noise Only
Read More