Thurbs Posted December 31, 2010 Share Posted December 31, 2010 (edited) Hi all. I have just bought this amp second hand off a fello Basschatter and have come across the following problem. All was well until I DI'd to the PA. As soon as I plug in there is a horrible hiss from the PA speakers. The volume of the hiss gets louder when you turn up the input dial. It makes no difference if anything else is plugged in to the amp, if any of the nobs or switches are at any setting. The only effect on the noise is the input dial. The hiss is only evident on the PA, the speakers are still silent. I have tried different PAs and DI cables so it is not either of them. After taking it out of the case, I cant see any bad connections or wires missplaced... Any ideas? Edited December 31, 2010 by Thurbs Quote Link to comment Share on other sites More sharing options...
DHA Posted January 1, 2011 Share Posted January 1, 2011 [quote name='Thurbs' post='1073728' date='Dec 31 2010, 02:48 PM']Hi all. I have just bought this amp second hand off a fello Basschatter and have come across the following problem. All was well until I DI'd to the PA. As soon as I plug in there is a horrible hiss from the PA speakers. The volume of the hiss gets louder when you turn up the input dial. It makes no difference if anything else is plugged in to the amp, if any of the nobs or switches are at any setting. The only effect on the noise is the input dial. The hiss is only evident on the PA, the speakers are still silent. I have tried different PAs and DI cables so it is not either of them. After taking it out of the case, I cant see any bad connections or wires missplaced... Any ideas?[/quote] The hiss might be on the amp the whole time and it's just you can't hear it via the bass amp's speaker cab and it's just the PA speakers that can reproduce it. Or, the Di circuit is damaged or just not very good. Quote Link to comment Share on other sites More sharing options...
BottomE Posted January 2, 2011 Share Posted January 2, 2011 [quote name='DHA' post='1074448' date='Jan 1 2011, 03:37 PM']The hiss might be on the amp the whole time and it's just you can't hear it via the bass amp's speaker cab and it's just the PA speakers that can reproduce it. Or, the Di circuit is damaged or just not very good.[/quote] Is there a post or pre EQ switch on the DI? I have had problems with the signal from my amp being too "hot" and if you look at a previous thread in this folder there are some suggestions of how to get around this. Have you tried it on more than one desk. Could be you got a sh*te wiring config and that it is particular to the place that you played in. Quote Link to comment Share on other sites More sharing options...
.gif.9ad672bb8b84505709f76b39c8c256ec.gif)
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.