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Getting feedback when using power amp and cab


pamisano
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So I normally use an Atomic Wedge (powered) with my Helix.  I recently plugged into my ISP Stealth power amp and JetCity 2x12 and almost every preset now has this obnoxious high pitched squeal.  Any ideas what would be causing that?

 

Thanks,

 

Pete

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So I normally use an Atomic Wedge (powered) with my Helix.  I recently plugged into my ISP Stealth power amp and JetCity 2x12 and almost every preset now has this obnoxious high pitched squeal.  Any ideas what would be causing that?

 

Have you adjusted high and low cut on your blocks?  I had issues with the sharp sound of my presets until it was pointed out to check the frequency range of the speakers I like the most with my real amps.  I found that to be 80Hz to 5K (or even 5.5K)Hz so I started cutting the High and Low at that range and it worked out best.  In some cases I even cut the highs to 4.5K-4.7K Hz

 

Dennis

 

PS: Here is the link to the thread I had asked a question about that led me to that thought

 

http://line6.com/support/topic/20693-pick-noise-why/

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