Instrument Amplifier Throw Distance Calculator
Know how far your sound will travel and arrange your stage gear accordingly.
Additional Information and Definitions
Amplifier Wattage (W)
The nominal power rating of your amplifier in watts.
Speaker Sensitivity (dB@1W/1m)
Decibel output at 1 meter from a 1W input. Typically 90-100 dB range for guitar/bass cabs.
Desired dB Level at Listener
Target loudness at the audience position (e.g., 85 dB).
Optimize Sound Coverage
Prevent muddy mixes or under-projected instruments with data-driven amp placement.
Loading
Throw Distance Terms
Understand key concepts for projecting sound effectively on stage.
Wattage:
Power rating indicating how loud an amplifier can drive the speaker, measured in watts. Higher wattage often yields greater headroom.
Speaker Sensitivity:
How efficiently a speaker converts power into sound. A higher sensitivity means louder output for the same wattage.
Desired dB Level:
Your target loudness at the listener's position, ensuring clarity without overwhelming volume.
Inverse Square Law:
Sound intensity diminishes by approximately 6 dB each time distance from the source doubles, affecting your throw distance calculation.
Tailoring Amp Placement for Maximum Impact
Placing your amplifier in the right spot ensures every note is heard distinctly. Here’s how to balance coverage without deafening volume.
1.Recognise Venue Acoustics
Hard surfaces reflect sound and create echoes, whereas carpeted areas absorb it. Study your venue to anticipate how far sound will carry.
2.Avoid Overpowering the Front Row
Angling your amp or using amp stands can project upwards, saving audience members closest to the stage from too much volume.
3.Check Sound in Multiple Spots
Walk the room or ask a friend for feedback on coverage. Ideal throw distance ensures consistent loudness from front to back.
4.Amp Wattage vs. Tone
Higher wattage amps might alter your tonal character at different volumes. Balance your desired tone with needed projection.
5.Mic and PA Support
For larger venues, rely on microphone feeds to the PA system rather than cranking your amp to reach the back rows alone.