Ianc2,

I get this with mine on the front left and right, when there is a 5.1 DD source at times. Where would I pick up one of the triggers you suggest?

Lee

1. 568.2mm, M33c, Beolab 6000, Fujitsu Q520 HTPC (Kodi Jarvis), Samsung KS7000 55, Sony BluRay
2. AC200, DSP5200SL, Squeezebox Touch, Rega Planer 2, Ortofon red
3. Lenovo Thinkpad, Prime, Prime Power Supply, Explorer2, Sennheiser HD700 cans, Shure SE425 buds