We've had great success using floor pads to reduce noise on through hole insertion machines, but have never tried it with a washer. Why not??? Dave Fish Ed Popielarski wrote: > Steve, Sound is simply a series of air presure variations. Adding > "white noise" (flat broadband sound, equal amounts at every frequency) > will "mask" undesireable noise, but does nothing to attenuate it. > There are new techniques that use a microphone to detect the sound, > invert it and re-send it into the air via loudspeaker, but this sort > of equipment will cost more than the machine you'r trying to quiet > down. My suggestion is to replace the sound foam with a high quality > absorptive material such as made by Sonex, as well as a pad on the > floor under the machine. You'd do well to have a service come in with > an audio spectrum analyzer to "customize" the sound materials to > specific problem areas in the machine. Regards,Ed Popielarski > QTA Machine > 10 Mc Laren, Ste. D > Irvine, Ca. 92618 Ph: 949-581-6601 > Fx: 949-581-2448 http://www.qta.net Check out our BGA Baller and > Process Equipment Services!