Posts by djdyer

I've done some research and I think I can answer my own question. Preamp circuits vary a lot but typically have several gain stages. The gain knob on a real amp controls a signal amplitude adjustment that is typically not placed before the first gain stage. For example, Fenders & Marshalls typically have the input gain located between the first and second gain stages. On some amps the gain knob adjusts signal amplitude at several points in the preamp circuit. This explains why boosting a signal into the front of an amp gives a different result to turning the gain knob, and also why the Kemper can't know how the amp would react at different gain settings by sending a range of signal amplitudes into the amp input.

So I can see why a Kemper profile would struggle to react accurately to a change in the gain setting from the original as-profiled gain setting. For a non-liquid profile, changing the gain setting is ( I think) simply adjusting the input signal before the first gain stage, which would not be accurate to the amp.

In that video he is using the B&H filmo crunch profile from this paid pack https://bertmeulendijk.com/product/clean-pack/

Here's a great video with all the settings. He's using a paid profile from BM's clean pack as a starting point, but you will get similar results from any good dynamic clean profile.

Thanks for the detailed response Wheresthedug . I am still not quite getting it though. If the gain is simply an amplitude adjuster before the pre-amp then why would a low setting on the gain knob prevent a large amplitude on the input from reaching the pre-amp and driving it into distortion? Does the gain circuit include some kind of limiter?

Quote from Wheresthedug

The issue isn’t traditional vs liquid but rather increasing vs reducing gain. If you start with a lower gain sound and increase the gain the profiler has to guess how the amp would respond as it didn’t capture the information during profiling. However, if you start with a higher gain sound and reduce the gain to get your clean sound it should behave live the real amp (regardless of whether it has been converted to a liquid tone stack) as the Kemper has already gathered all the information upto the profiled gain setting during the profiling process. This is almost certainly why the alien noises during profiling start softly and get steadily louder. Therefore, the Kemper doesn’t need to guess how the amp would behave at lower gaon settings and as a result reducing gain behaves like turning the gain knob on the real amp.

Thanks for sharing that, very interesting! My understanding is that amp gain involves adjusting the input signal's amplitude (in dB) before it enters the preamp, which seems similar to applying a boost or cut in the stomp blocks or directly adjusting the guitar's input signal.

If that's accurate—and please feel free to correct me if I'm mistaken—I'm curious why the profiling process wouldn't be able to capture the full range of an amp's gain by varying the input test signal amplitude during profiling.

Quote from Ruefus

It is not possible. This is similar to the two profiles at once request.

Current hardware can’t do it - nor can it be programmed to. Kemper said they’re not seeing the need. One of the fees things they have said over the years.

Not never…..but not with any product currently available.

That's a shame. I guess it would be techically possible to have 2 amp/cab profiles in a single rig with the morph used to simply switch between the two rather than smoothly morph. That would techically be no different to switching between two rigs. In effect, there would be 10 rigs inside a single performance. I guess Kemper's view is we should just use 10 rigs to achieve the same result, but I like to get all my rhythm and lead tones from single performance to keep things simple. Each of the 5 rigs in my one performance have a rhythm tone & volume at zero morph and a lead tone & volume at 100% morph.

Quote from piotrmaj

Rig is not just a profile, it is also set of 8 effects. How should morphing behave in case two rigs are using two completely different sets of effects? How to morph overdrive into delay? I don't think it would work.

I was just referring to having two amp&cab profiles in a single rig, one for no morph and the other for fully morphed. The 8 stomp/effect blocks would work as they currently do.

This has probably been asked for many times, but I am curious whether it is actually possible in the Kemper. I am guessing that an amp& cab profile is a string of variables that are measured by the profiling process and so it would seem possible that the Kemper could morph between 2 values for each variable. We could then profile a rhythm tone and a seperate lead tone for the same amp and morph between the two amp/cab profiles inside a single rig. I currently morph between ryhthm and lead tones using a single profile, but I do find that the sound becomes increasingly dull and a little phasey the further the gain is changed from the initial as-profiled value, to my ears anyway. Not a huge issue really, especially for live use, but noticeable. I've tried converting a profile to liquid before changing the gain but that did not really give any improvement.

If this is possible, but the problem is that the in-between set of values for the profile variables gives an awful sound, then I would personally be happy for the variables to switch instantly from one to the other at the 50% morph point.

I also use the vintage chorus on nearly all my live rigs. I updated without knowing about this change. However, the crossover function is still visible and operating on the Profiler itself (Toaster) but has dissappeared from the rig manager. My live rigs seem not to have been changed by this update..

Yes it would be useful to be able to go back to a previous rig within a performance and select either the last saved or last used stomp on/off arrangement. I think the problem is how you would make that selection in a practical and reliable way. The best I can come up with is to click 3 times in 2 secs to select last used state. 1 click = unmorphed last saved state (as present). 2 clicks = morphed last saved state (as present). 3 clicks = unmorphed last used state.

I agree that tapping the rig switch 3 times to get the last-used state rather than the saved-state ( 1 click) is not ideal, just could not think of a better way. It would be nice if we could have a way to toggle between saved state and last-used state so that 1 click could have two results. However, I would not want to dedicate one of the remote buttons to just to doing this as I am using them all for other things.

Switching rigs on the remote currently uses saved-state for each rig, not the last-used state. So any stomps/effects that had previously been in a different state when the rig was last used will be reset to the saved state when a rig is selected using the remote. 90% of the time that is exactly what I need so I would not want that to change. But it would be nice to have the option to switch to a rig in the last-used state using the remote. For example if i am using a clean rig with chorus switched on for the verse and a crunch rig for the chorus it would be useful to be able to return to the clean rig with chorus switched on for the next verse without needing to firstly select the clean rig and then tap a seperate switch to turn the chorus back on again.

This could be achieved by tapping the rig switch 3 times within 2 seconds to indicate you want the last-used state. The rig switch click sequence (no taps within 2 secs) could be...

1 click - unmorphed saved-state

2 clicks - morphed saved-state

3 clicks - unmorphed last-used state

4 clicks - morphed last-used state

The last-used state is currently the default when switching rigs on the Profiler buttons.. so the last-used state it is currently saved in the system. There just needs to be a way of indicating that you want the last-used state on the remote.

Quote from Wheresthedug

I kind of like your thinking but I still believe the best way to achieve this sort of flexibility would be to allow multiple morph groups. This would allow everything you want plus a whole lot more and would preserve the ease of use/workflow of the existing system.

Imaging is you had 4 morph groups. You could replace the current Wah/Volume/Pitch/Morph pedal structure with a simple Morph A/B/C/D (plus a fifth second push on rig button) system. The current setup would be preserved for rig consistency by a Legacy pedal option (like Legacy Delay etc).

I can appreciate the working with multiple morph groups could have been very confusing on the old hardware screens but with Rig Manager editing and colour coding of each group it could be implemented very cleanly.

Agreed that would work too. I'm guessing this would require a bank of expression pedals, one for each morph group? I'm all for any update that provides more flexibility out of a single rig.

For live use with rack/head + remote ( or stage) I would find it really useful to be able to have the option of A and B settings for each stomp/effect as well as the non-morphed and morphed settings. For example I would use the A & B settings to switch between a gentle chorus and heavy chorus effect whilst still being able to use morph to switch between rhythm and lead settings for each rig. Each stomp/effect would have 4 settings :

Non-morphed A

Non-morphed B

Morphed A

Morphed B

Switching between A & B would be done by the remote. Assign a stomp/effect to a switch and then use the switch to toggle between off/A/B . This would only be an option if one stomp/effect is assigned to a switch.

Off/A/B switching would be enabled automatically when a single stomp/effect is assigned twice to the same switch.

I appreciate that all this can be achieved by creating more rigs and more performances, but I like to keep things simple on stage by using just one performance with 5 rigs that cover all my needs. I therefore would like to get as much variety as possible out of the 4 stomp/effect switches for each rig.

Stumbled across this video on Youtube. Pretty thorough comparison of old and liquid profiling results. This suggests that one liquid profile of an amp will not be quite as good as taking several liquid profiles at different amp gain settings.

Live festival recording, with MBrit AC15 + vintage chorus & delay in the main part and Bert's BE100 for the solo.

Could we please have the option of linking two stomps/effects to a single remote stomp switch with the sequential switching sequence of All off ->A on (b off) -> B on ( A off) -> All off. I would find that very useful. Thanks.

Additional note:

An example of how I would use this to have No chorus -> Light chorus -> Heavy chorus on a single switch. So ideally this Off-A-B switching option on the remote would also enable a second A-B morph option for a single effect that is assigned twice to a single switch. I am already using morph on all my rigs to change from rhythm to lead.

would be nice if you could (say) press a rig switch once to get the saved rig setup and 3 times within 1 sec to get the last used setup with stomps/fx as you last left them. 2 presses remaining as morphed.

+1 for this useful upgrade.

Quote from Franjoe30

That's a fab live tone, did you go direct to the PA?

Brilliant singer too

thanks. We run a silent stage with E-drums and both guitars direct to the p.a. via kemper & sans amp. Makes set up so much easier, and gives a great live sound. Also very handy for getting good live recordings!