SF2 Hisssssss - troubleshooting

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Author Message sailorofcheese Junior Username: sailorofcheese Post Number: 12 Registered: 1-2011 Posted on Wednesday, April 06, 2011 - 8:42 pm:    hi, I was hoping to get any advice or recommendations. im having a nasty hiss with my SF2 and i'd appreciate any help. My current setup is F1X --> SF2 --> Stewart 2.1 --> Acme 4ohm cab the SF2 is in the effects loop of the F1X: effects send --> channel A in, channel B out --> effects return. after reading up on other threads, i had made sure that there was a good contact in the effects loop of the F1X by inserting the 1/4 jack in and out to clean the contacts...hiss is still there. then i gave this setup a try. effects send --> channel A in, channel A out--> effects return. much less hiss in channel A i did the same with channel B and i found the hiss again. *another thing to note is that when i turn up the filter gain on channel B, the hiss gets louder. *also, [channel B out input] seems like somethings slightly loose inside causing the 1/4 connector to have some slight "play" or movement. so far it sounds great, just that hissss is concerning me and im considering sending it to alembic to have it serviced I just picked this up used and im still learning all its functions so any help would be appreciated. mica Moderator Username: mica Post Number: 7279 Registered: 6-2000 Posted on Friday, April 08, 2011 - 4:28 pm:    Try the SF-2 after the F-1X and not in the loop. The F-1X is expecting a low-level effector unit, and the SF-2 is higher gain than it's expecting. Let me know if that makes any difference (it should!). sailorofcheese Junior Username: sailorofcheese Post Number: 13 Registered: 1-2011 Posted on Tuesday, April 12, 2011 - 11:09 pm:    awesome! that makes sense. i tried it out and it reduced the amount of hiss quite abit. thanks for the input. any other advice or recommendations is welcomed! -steven jbybj Advanced Member Username: jbybj Post Number: 328 Registered: 6-2006 Posted on Saturday, April 16, 2011 - 10:45 pm:    So glad to have found this. I didn't know I had the same problem, unitl I took my SF-2 out of the effects loop and placed it after the F1-X. Great got even better........ Thanks sonicus Senior Member Username: sonicus Post Number: 1763 Registered: 5-2009 Posted on Saturday, April 16, 2011 - 11:01 pm:    I like to run my SF-2 from DS5-R to F-2B . I use it 2 channel. It seem to work well that way.