Comparing SilentDoor RW®: Sound Reduction Performance Explained

Sound Reduction and Decibels (dB): Every 3 dB increase in sound reduction does indeed represent a doubling or halving of sound energy. However, when you combine two doors (or any two sound barriers), their sound insulation properties do not simply add up linearly in terms of decibels. Instead, the combination effect is more complex.

• In fact, two identical doors (such as two SilentDoor RW® 45T doors) would not double the sound reduction. The combined reduction would be approximately 3 dB higher than the reduction of one door. So, if one RW® 45T door provides 45 dB of sound reduction, two of them would give a combined reduction of 48 dB (a 3 dB increase).
• SilentDoor RW® 45T and RW® 50T: A single RW® 50T door, offering 50 dB of sound reduction, would indeed be more effective than two RW® 45T doors, because it provides a higher level of sound isolation with a single unit. Therefore, a single RW® 50T door would outperform two RW® 45T doors, even if those two provide a total of 48 dB, because 50 dB blocks more sound than 48 dB.

So, to summarise::

• Two SilentDoor RW® 45T doors would achieve approximately 48 dB of sound reduction (3 dB more than one door).
• A single SilentDoor RW® 50T door provides 50 dB of sound reduction, which is greater than the 48 dB from two 45T doors.
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Thus, a single RW® 50T door provides better sound insulation than two RW® 45T doors combined. The core concept remains that every 3 dB increase signifies a noticeable improvement in sound isolation, but the actual increase from combining two doors is only around 3 dB, not a doubling of the sound reduction.

Interesting isn't it...