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20°C (68°F) and 50% relative humidity

Power Relationship in dB

Watts 1:
Watts 2:

The power difference, in dB, will be 0dB

Voltage Relationship in dB

Volts 1:
Volts 2:

The voltage difference, in dB, will be 0dB

Distance sound will travel in x time

Time in ms:

In 0ms sound travels 0ft (0m)

Time it takes sound to travel x distance

Distance:
Feet Meters

It will take 0ms to travel x ft

Difference in arrival time between talker and loudspeaker. Distance measured between talker or loudspeaker and listener.

Talker Distance
Loudspeaker Distance
Feet Meter

There is 0ms difference between the Talker and Loudspeaker arrival time.

graphic

Volts to dBu

Volts in:

0 volts is equal to 0 dBu

dBu to Volts

dBu in:

0dBu is equal to 0 volts

dB loss over x distance.

Distance to listener:
dB @ 1w/1m
Feet Meters

There will be a loss of 0dB over a distance of 0ft resulting in 0dB at the listener.

System Design

Target dB SPL
Target Distance Feet Meters

dB loss over distance is

Desired headroomdB

Overall SPL needed

Number of Loudspeakers

Peak SPL per speaker

Cable Dampening

Feet Meters
mm2
Ω

Cable Resistance

Dampening Factor

dB Loss

Frequency & Wavelength

Hz
Feet Meters

Hz has a wavelength(λ) of

½λ =

¼λ =

period(T) =

Feet Meters

Freqency(ƒ)

Canceling distance

Cluster Height

Feet Meters

Cluster Height is height

graphic needed

Vertical Seating Height

Feet Meters

Vertical Height of Seating is

graphic needed

Adding SUBs SPL

SUB dB @ 1w/1m
Number of SUBs
Combined SPL output of SUBs will be

MAX SPL - Long Term

Sensitivity
Max Power Handling

The long term MAX SPL is calculated to be

Addition of Unequal dB

Level 1
Level 2

The resultant level will be x dB SPL

Combined Impedance

No. of Loudspeakers
Impedance

The calculated Impedance is x Ω