## What's the required sound pressure level (1 metre) of my loudspeaker?

 Sound Pressure Level Calculator calculates the sound pressure level in rooms Please enter decimal separators as "." Please enter your room size and the required Sound Pressure Level in dB Height in m: Width in m: Length in m: Required Sound Pressure Level in dB: Room volume in m3: Room area in m2: Choose a loudspeaker with maximum sound pressure level /1m in dB: further notes: © Lautsprechershop Daniel Gattig GmbH, 2005. All rights reserved - Warranty excluded

Now the question comes up what sound pressure level (in dB) is needed for your room.

Just calculate the required maximum sound pressure level of your speakers according to the required volume:
- 100 dB sound pressure level for moderate volume
- 105 dB sound pressure level for standard volume (desirable for hi-fi)
- 110 dB sound pressure level for high volume (disco)
DIN 15 905 Part 5 says: over a period of two hours a sound pressure level of 99 dB at an average may not be exceeded and may lead to bodily injury.

# The following table is a guidance for hi-fi systems

 Maximum sound pressure level (1m) of your loudspeakers Room size, where 105 dB are achieved (m2 at 2,5 m ceiling height) Recommended room size in m2 100 dB - 4-8 101 dB - 4-10 102 dB - 6-12 103 dB - 6-14 104 dB - 6-16 105 dB - 6-20 106 dB 5 8-20 107 dB 8 10-22 108 dB 10 10-25 109 dB 12 12-30 110 dB 16 16-35 111 dB 20 20-40 112 dB 25 25-50 113 dB 33 30-60 114 dB 42 33-65 at 3 m ceiling height 115 dB 45 35-70 116 dB 55 40-75 at 3,5 m ceiling height 117 dB 61 50-90 118 dB 77 60-100 119 dB 104 70-120 120 dB 124 80-140 at 4 m ceiling height 121 dB 135 90-150 122 dB 175 100-180