Phil et al.- I think this is the thread over at Avid that you're referencing: http://duc.avid.com/showthread.php?t=297502&highlight=phase+plexi

His results sound the same as mine. Weird sound after a bit of sustain. I noticed it in the plexi patch v.1, but it's even more present in v.2. I don't use the noise gate, and find it present regardless of where the speaker break-up is. Switching to the G20 cabinet makes it worse. I also don't use the noise gate, as I stated above.

Thoughts?
m

Mikefont - I just read through that article and it's the same thing I'm experiencing. The only catch is that I run the noise gate entirely off all the time, and I've only recently had option to add speaker break up.

What do you guys think? Vaisatch - would you still like me to email you the rig file to monkey with?

If it's related to the gate in any way, try using -50 with 30ms. That gate took me forever to figure out what would work with it. I almost always use a dbx/od/some type of tube preamp so never noticed so much but they aren't real tight unless I dial them cleaner. I always turn my guitar vol to 5 on plexi type stuff whether real or modeled/use neck or split...

TLTD - I'm almost certain the phasing issue has nothing to do with the gate, as I leave the gate off all the time. I'll try your settings though and see if it helps.

I used to leave the gate off because I couldn't get anything to work but I always stayed in the -25 range. Apparently, the Eleven Rack is going more by the signal to noise ratio than decibels. Then I realized no matter what I did with the outboard gate there would be this weird seashore like sound that would start to come in with the signal. I always thought it was still outboard and sometimes I can just dial it out but sometimes you want that tone but have to put up with the noise that is definitely coming from the modeler. With the expansion pack DYN3 you SHOULD be able to do what I do with my compressor but put it at the end of the signal. I could do this by putting my compressor in the loop but I' not sure it's going to kill the tube noises that way so am looking forward to the expansion pack to try the DYN3 as a gate. It SHOULD work. But I have been able to work with it as described.

Just throwing this out there, I used to use Monster cables and the noise was much worse I remember that now...You? I switched to Mogami Platinum, much better signal.

..........AH I hear it now...Yep...Like a rotating speaker almost. Definitely the amp, doesn't matter if all the knobs are down or what...I think the intention of the modelers are to provide this sound for your chords/pick attack but if you let it ring out the algorithm starts over and loops, slowing down with the volume. Pretty much tried everything guitar in, outboard stuff in (with the amp modeler still on of course). Turned on my limiter and it gave me more time before it was noticeable but using my compressor gate the way I usually do sounded pretty trippy and brought it out A LOT.
•Maybe Browntown is based on Dr. Emmet Brown's custom Back to the Future rig because that's what it reminds me of.
Only thing for now is use DYN3 as a limiter (pre amp/cab)if you of course have the expansion. But if you are ending a song with a 20 second guitar chord you will have a problem unless you can somehow keep the signal from fading. On the plus side it sounds kind of cool if you do a wide vibrato at the same pace as it's happening.

A: sounds like an old plexi to me
B: not so much phasey as noise coming into play as the signal decays
C: Have you tried different guitars.....I assume you are using humbuckers but even with HBs, some guitars are more noisy than others, I have one guitar that sounds great (a les paul btw but it is noisy) and another Fender HMX again with humbuckers that is less noisy.
D: vintage sound equals more "noise"
E: You may want to consider having a techy look at your guitar and see what could be done to "quiet" it....ie: shielding, quieter electronics....what pickups do you have? are you running the volume on your guitar all the way up?
F: I doubt you'd notice this "noise" much in a mix
G: I'll do some more research....but I have noted over the years that with great tube tone, comes "noise"......especially with vintage gear....its kinda what makes things sound NOT digital.
H: instead of a compressor, how about the tube screamer sim and/or white boost in front and adjust the gain of the plexi and the OD sim to get what you want........remember this is likely a reason people back in the day started boosting their amps........and manufacturers including Marshall started to make higher gain amps (even the whole jumped idea....to get longer sustain with out note decay and "noise").....a Plexi that sustains very long without an OD or Distortion pedal is not realistic........

The 11 rack sims are very authentic from what I can tell

Eman -

The guitar in question is a 2005 Les Paul with Tom Short custom PAFs. It's not perfectly quiet, but the phasy sound persists regardless of guitar choice. The sound isn't 'noise' so much as a specific phasing sound during the decay of notes.

My biggest concern is that i DON'T hear this phasing sound in other people's Plexi Variac clips. If i heard it everywhere, I would attribute it to part of the tone. But i only hear it in my clips, and in a few clips from the Avid board. And I'm not looking to get more gain from the Plexi Variac than Van Halen, which it should be able to to produce without a weird phasing sound during the sustain.

Listen to the clip Jimification uploaded last week, and then listen to mine. Same cab and mics. Mine may even have less gain. You'll hear a natural decay on Jimification's clip, and hear a weirdness in mine.

Wonder if once guitars are double or quad tracked then you don't notice. I sometimes use the Eventide Pitchfactor for doubling because it will delay the second signal so they aren't both doing it at the same time but it doesn't help. I usually use different amps anyway and dial them to sound more like Plexis but the algorhythm is definitely overdone. This is not noise we are talking about btw. It is most likely intentional but needs looking into I think but in my own opinion it is perfectly ok for how I play. Reminds be of the Beastie Boys "Fight For Your Right" opening so there's definitely some attempt in the modeler to emulate the way a real amp does this.