At 39 decibels, the CP-X8170 has a quite loud noise level compared to most of the other 3000:1 contrast ratio projectors that came out more than two years ago. The quietest noise level of 3000:1 contrast ratio projectors that have been on the market for a similar time to this multimedia projector is 25dB, the loudest is 45dB, and the average noise level is 35dB.
There are a number of other 39dB noise level projectors currently available which you might want to consider including cheaper multimedia projectors such as the Hitachi CP-WX8265 (£2,469.99).
Alternative multimedia projectors with a louder noise level that you might want to look at include the EB-1410 (£1,969.01) (35dB and cheaper), or the EB-475W (£1,575.25) (35dB and cheaper) both from Epson.
What does "noise level" mean?