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20°C (68°F) and 50% relative humidity
Power Relationship in dB
The power difference, in dB, will be 0dB
Voltage Relationship in dB
The voltage difference, in dB, will be 0dB
Distance sound will travel in x time
In 0ms sound travels 0ft (0m)
Time it takes sound to travel x distance
It will take 0ms to travel x ft
Difference in arrival time between talker and loudspeaker. Distance measured between talker or loudspeaker and listener.
There is 0ms difference between the Talker and Loudspeaker arrival time.
Volts to dBu
0 volts is equal to 0 dBu
dBu to Volts
0dBu is equal to 0 volts
dB loss over x distance.
There will be a loss of 0dB over a distance of 0ft resulting in 0dB at the listener.
System Design
dB loss over distance is
Overall SPL needed
Peak SPL per speaker
Cable Dampening
Cable Resistance
Dampening Factor
dB Loss
Frequency & Wavelength
Hz has a wavelength(λ) of
½λ =
¼λ =
period(T) =
Freqency(ƒ)
Canceling distance
Cluster Height
Cluster Height is height
graphic needed
Vertical Seating Height
Vertical Height of Seating is
Adding SUBs SPL
MAX SPL - Long Term
The long term MAX SPL is calculated to be
Addition of Unequal dB
The resultant level will be x dB SPL
Combined Impedance
The calculated Impedance is x Ω