Hi, wondering if anybody has had the same experience as myself with the Markbass Mini CMD 121P LM3 Combo. On Friday evening I went to use the amplifier. However, there seems to be a problem with volume coming from the speaker. I plugged a cable into the Line Out socket, and it does provide a signal to a mixing desk and works fine through a house PA. After maybe 30 minutes, the speaker suddenly comes to life for all of a few minutes, and then cuts out again. I have tried the bass amp again yesterday & today, producing the same results. Normally I just run the amp on its own for small pubs and clubs. If it is being used for anything bigger, I use the Line Out. It has never really been played at a loud volume, so I am a bit miffed if I have blown the speaker. If anybody could shed some light on this issue I would be very grateful. Thanks.