• We would like to remind our members that this is a privately owned, run and supported forum. You are here at the invitation and discretion of the owners. As such, rules and standards of conduct will be applied that help keep this forum functioning as the owners desire. These include, but are not limited to, removing content and even access to the forum.

    Please give yourself a refresher on the forum rules you agreed to follow when you signed up.

Crackling sound in the tail off

Not sure if I can articulate this well but I'll give it a go. I have noticed on some amp models, patches etc there is a tiny little crackle at the tail end of a chord ringing out. It's not clipping, I know what that is and it's not that. This is like a tiny little unnatural crackle as the sustain fades out. Doesn't happen on clean amps/settings. Only when there is a little bit of amp dirt in the mix. Doesn't matter what guitar I am using either. Sometimes I seem to be able to dial it out by backing off the prescense, treble, bright options but this doesn't always work and sometimes it wrecks the overall tone.

Anyone know what I'm talking about here? Is there a simple explanation or fix?
 

Andy G

Inspired
Can you post a preset where this is particularly evident? Or is there a particular amp model you have an issue with?
 
I'll try and post a preset but tonight it was the JTM45 amp - happens with the Austin Buddy preset for this amp. There are others. My Elevenrack used to do it aswell.
 

Andy G

Inspired
Are you sure it's not just the natural breakup of the amplifier? Post a preset anyway, or someone else who has Austin Buddy's presets might chime in. Hopefully there's an easy solution for you!
 

Paperjace

Experienced
Definitely sounds like the noise gate. If you don't have a Gate block in your patch, check the Input settings. It's to the left of the grid in Axe edit. Either turn the threshold all the way down so it's off or raise the Release parameter to a higher value so it closes the gate slower.
 
Does it sound like what can be heard on the intro of "Drop Dead Legs" as the notes ring out?



Or on this amp demo starting around 3:00 (link below should be time-stamped)



There have been some threads on the forum in the past about this "ghost fizz", and the conclusion seems to be that this is something that real amps do.

Good discussion here:
https://forum.fractalaudio.com/threads/ghost-fizz.77539/page-5#post-946546
Yep, start of Drop Dead Legs is in the ball park. Great advice in your post, thanks!
 

FractalAudio

Administrator
Fractal Audio Systems
Moderator
Crackliness of the note decay is dependent upon how hard the clipping is. If it's the power amp clipping this is dependent on the hardness of the power tubes (Power Amp Hardness) and the amount of negative feedback (less = softer). If it's the preamp clipping it's dependent on the hardness of the preamp tube (Preamp Hardness) and the negative feedback around the last stage (not user adjustable).

A JCM 800, for example, crackles like crazy because there is a lot of feedback on the last preamp stage (since there is no cathode bypass cap). A Friedman BE-100 preamp is similar to a JCM 800 but it has a cathode bypass cap on the last stage and the resulting distortion is much smoother.
 
Crackliness of the note decay is dependent upon how hard the clipping is. If it's the power amp clipping this is dependent on the hardness of the power tubes (Power Amp Hardness) and the amount of negative feedback (less = softer). If it's the preamp clipping it's dependent on the hardness of the preamp tube (Preamp Hardness) and the negative feedback around the last stage (not user adjustable).

A JCM 800, for example, crackles like crazy because there is a lot of feedback on the last preamp stage (since there is no cathode bypass cap). A Friedman BE-100 preamp is similar to a JCM 800 but it has a cathode bypass cap on the last stage and the resulting distortion is much smoother.
Thanks so much for chiming in - I had no idea about these amp factors - just takes the Fractal realism levels to off the charts good!
 
Top Bottom