I run an SWR SM-500 through an SWR Goliath 4x10 and an SWR Son of Bertha 1x15, and I'm really digg'n the tone. However, last night at band practice, I noticed when I switched from using my fingers, to using a pick, on certain notes, the pick attack caused the speakers to produce a nasty sort of burp or pop sound. I stopped using the pick, because I didn't want to damage my speakers. Today, I'm going to try to track down the culprit, and I was just wondering if anyone else has had a similar experience? My eq is set pretty flat; a slight boost at 80hz and again at 200hz. I set my gain so that the clip light just barely flashes on my loudest notes, and my master volume is usually never above 10 o'clock. I'm not sure if the problem I was experiencing is due to a bad eq setting, overdriving the preamp stage, or the attack of the pick briefly overdriving the speakers. Maybe a combo of all three. I never experienced this problem with my old SWR Silverado combo, so I'm slightly perplexed. Any thoughts would be greatly appreciated.