topic Mex-BT3900U Sound problem in Portable Audio https://community.sony.cz/t5/portable-audio/mex-bt3900u-sound-problem/m-p/224048#M503 <HTML><HEAD></HEAD><BODY><P>Hi, Had BT3900u install for use with iphone4 &amp; everything was great then got issue when playing music off phone (usb connection) &amp; getting a phone call, when it goes back to music the volume is half wot it was but setting is the same ? Phoneor bt3900u problem ?</P></BODY></HTML> Sat, 11 Jun 2011 12:47:43 GMT mickcfc1963 2011-06-11T12:47:43Z Mex-BT3900U Sound problem https://community.sony.cz/t5/portable-audio/mex-bt3900u-sound-problem/m-p/224048#M503 <HTML><HEAD></HEAD><BODY><P>Hi, Had BT3900u install for use with iphone4 &amp; everything was great then got issue when playing music off phone (usb connection) &amp; getting a phone call, when it goes back to music the volume is half wot it was but setting is the same ? Phoneor bt3900u problem ?</P></BODY></HTML> Sat, 11 Jun 2011 12:47:43 GMT https://community.sony.cz/t5/portable-audio/mex-bt3900u-sound-problem/m-p/224048#M503 mickcfc1963 2011-06-11T12:47:43Z