I'm all ready to get excited about a new update, but what do they mean by master volume? Each amp model already has one  i believe.

Stupid question perhaps but do they mean we will be able to set a maximum volume and all the patches you make will be automatically that volume if you want so. The bassman model is way to quiet to my taste if you compare it to the bogner or something.

Bias, bais excursion hope... it doesn't get to comlplicated, it's good as it is now i believe.

lowyaw wrote:

 

being able to turn MV dowan on full models would be very, very handy, that will allwo you to have less dirt and less poweramp coloration(less 'farty" so to speak)

The bias and bias excursion controls will be the controls for that splatty/f@rty power amp characteristic rather than a master volume control.

Cheers,

Crusty

One thing I wonder...is will these parameters be set on a per patch basis? Or will we effectively be altering the model 'file' itself?? You're making the whole thing sound kinda...dangerous lol

That's a good one, OK thanks for explaining.

The patches i've made so far are sounding good as they are, gonna make some miles with the new update before i touch them.

Thanks!

Pezza wrote:

 

Just another question...these parameters all relate to the power amp don't they? Does this mean that the pre models (and DT50 function) are unaffected?

Yes.

Sag has the greatest effect in the power amp section where the big demand for electrons comes from.

Bias exists in all valves from triodes up (not diodes or rectifiers).  But the adjustable bias in the amps itypically relates to moving the point at which two power amp valves crossover when they share the load from the preamp from the phase splitter/inverter (I'm trying to keep this explanation simple).

The bias excursion refers to that bias level moving by itself when the valve is working hard, another term that gets thrown around this is power amp saturation.

A master volume can exist in several places within the amp circuit but the role it plays is affects the power amp section of the amp.

So, this would mean that the PREs should be left as is because they take care of the guitar signal before being affected by these other things.

Cheers,

Crusty

yes, as long as you use the "full" amp, rather than the "pre", I am assuming.  Hum might be effective on both - not sure.

How any of the new tweaks will actually translate for the HD models is SO up for speculation at the moment.   No telling, really.   However,...   

Less sag generally means an amp will have a more punchy response; as opposed to having more sag, which will cause the signal to compress the initial transient spike, and then bloom afterward at the same relative volume, more or less.   More sag also equates to a looser feel in the bottom end.  I'm stoked that the HD's will get a sag control.   Totally stoked!  For me, sag is the one factor that makes some tube amps go beyond being merely something to play my guitar through, and become more of an extension of the guitar, and fun to play in and of themselves!

I expect the bias may wind up being a fairly subtle tweak for the model's power tube distortion character.  It'll all depends on how Line 6 chooses to model it, whether it be a range within normal tube data spec, or to extremes that you really wouldn't do to a real amp unless you just wanted to know where the magic smoke escapes from.

I expect the bias excursion to be a tweak determining just how dirty you can overdrive a power tube before hitting the wall of blocking distortion; which is the splattiest, phartiest possible sound that a Derpy hamster choking on a grapefruit could hope to produce, or something along those lines.   Blocking distortion kills most of the ouput level of tube amps, so it's not even useful as a fugly noise effect in most instances.   Reverend Billy Gibbons does get some use out of blocking distortion, but in that case it's doable because it's from the transistors in a stack of Expandora pedals.

At the other end of the possible bias excursion tweak spectrum, it may be a totally subtle tweak used to set how quickly the tube goes from clean to overdriven.    This could be good for those of us who prefer to set our amps just on the edge of breakup and would like more control over the touch sensitivity that sends the power tubes into clip.    Normally I just do it all with the guitar volume pot, but this, like the sag, could wind up being an addictive new tweak.

All just speculation at this point, though.  Only Line 6 knows what's really in store for the future of the HD's.  

Gil...

No the Channel Volume control only controls the output volume of the amp model, it is not a modelling control at all. So it doesn't change the tone - just overral volume. It's a device control - not a modelling function.

That's fine for the none master volume amps simulated, where the gain controls act as they would on the real amp. But on the master volume models Line6 has set the simulated master volume at a certain position that the user cannot edit - until that is v1.30 firmware is released.

the pod simulates everything, including AC hum.  you can change it from 60 to 50 HZ in the setup menu as well.  i always try to remove it with a noise gate as well.  i would assume the new hum setting will allow you adjust its volume.  i'll be setting it to 0.

however, there are some people that swear that you need the hum to get the killer vintage tone.