Posts by MaximeLajoie

Quote from ReneLangenhan

BTW what are you using that DI profile with? poweramp+cabinet?

Yes, for that and maybe to try and record with different cab impulses later on. Anyway thanks for your advice, I don't have a cab simulator though so I'll try to find that. The torpedo is cool but is expensive, any ideas ?

Quote from mDan

Actually it's not. The speaker is a nonlinear load. I made many DI profiles (which all turned out quite good) - always got better results with cab + DI box then when I just used a dummy load.

Ok, so if I plug the cab and turn off all attenuation, now it's acting exactly like a d.i between speaker and amp, right ? It will give the non-linear load to the amp and therefore the line signal will be acting more like a d.i signal...I'll try that when nobody's home.

Again, I'm not complaining that the profile doesn't sound like the actual amp in a cab...
I'm asking if it's normal that the profiling process does not achieve what the reference amp sounds like in the kemper. Linear or non-linear load, I thought the kemper was supposed to replicate the sound it receives from the return input.

After reading a few forums, I noted that a lot of people were having this similar problem. When '' cab '' is engaged, the sound will be really similar. But when you turn off '' cab '' the reference/profile are not really close anymore.

Quote from tylerhb

I have never heard any amp that sounded better if you crank it and then attenuate it back. Speaker compression due to high load is a different thing but power amp distortion on its own is one othose great myths everyone is aiming for until they finally hear it... If it really sounds so damn awesome why would anybody build an amp with more than 10 or 20 watts? One of the first amps with integrated power brakes got a huge amount of users stating that their amp seems to be broken

My jmp actually sounds better when the master volume is around 4-5-6. It has to do with speaker saturation, but also with the power amp being cranked a little ( it always sounds better around 4-5-6, even when direct recording ).

Yes, this would be an explanation.It's exactly what's going on. No, theres no cab simulation on a hotplate. It's really only the sound of the preamp + sound of the poweramp.

The kemper sound is similar, but not even close to '' exactly the same ''.

I guess you're right about kemper not beeing able to capture the sound without cab simulation. But then how did everyone else are able to profile preamps with the d.i's ?

Thats what I'm trying to say haha. The hotplate is the same thing as a d.i when taking the line out. It takes the signal and put it into a line level, which is exactly what a direct box does.

The signal that the kemper receives ( the reference amp ) is perfectly fine ( it is monitored via the kemper, via the headphones ) So the signal chain is alright. What is weird, is that when it's profiling, the '' kemper amp sound '' that is supposed to be identical to the '' reference sound '' is not.

There's not attenuation with the hotplate going on, that's only for the speaker out on the hotplate, which is not even being used.

The hotplate is an attenuator, but is also a dummy load ( which replaces the cabs speakers resistance by another resistor ). A speaker would be require just to not break the amp, no ? and in this case would not be require...

Doing the d.i thing with the hotplate is the same as with doing it with a direct box and speaker, it takes the amp signal and converts it into an ajustable line level signal. That's what I want to profile. Again, the reference amp signal is right, but the kemper signal after profiling is nothing near the reference amp signal even after refining...

Which speaker ? I did not use any physical speakers thats why I used a dummy load ( the hotplate ) ...The physical amp was not connected to a speaker... The only reference I used to hear what was going on was the headphones.

Do you mean from the '' starting rig '' ? If so, yes I turned the cab off, then started profiling.

Hi, So I tried to profile one of my amps for the first time today. It's a 1979 Marshall Jmp. I hooked everything up
(guitar--->kemper input-----kemper direct out(send) ---->amp input---->hotplate in---->hoplate line out---->Kemper return )

I then selected a similar marshall amp profile in the browser and started the profiling process. It was nothing near the reference amp. I redid it again and try to match the kemper and reference amp volumes. Nothing near reference... I did the refining process 3 times playing chords. Was not sounding near the reference amp. I could totally hear a major difference through headphones ( Ath-m50s )
I tried redoing the same process, but with '' cab off '' in the marshall profile to get the sound a little bit closer to the reference amp...Still was not close. The reference sound is bright and large sounding in the headphones, while the '' kemper '' sound is dull, darker and just not the same.

Am I doing something wrong ? Is it suppose to be that inaccurate when not using speakers ?
Is it because it automatically adds some kind of '' speaker simulation '' ?

Ok so I had trouble with opening the generated .csv file with excel. The columns were not aligned, etc. So I tried with Open Office, which worked out better since I could used the '' , '' to seperate columns and put each columns in '' text mode ''.

I continued and edited every rig I wanted to ( 106 rigs ) ... Then, I created the batch and, after deleting everything on my kemper, put the '' batch '' folder into my kemper, loaded the rigs etc. Everything worked fine, except there is 3 rigs missing. I redid it 2 times, the rigs are on the csv file, but not in the batch when it's generated. Any ideas why ?

Thanks!

Hey everyone, thank you so much for all the tips and advices. The wikpa is really really useful, I'm getting good with the kemper now and loving it even more.

Salut Seb et Marc ! j'espère que vous avez pas trop attendu le kemper, moi ça a été l'enfer haha !

Thanks again =)

Hey everyone! my name is Max. I've had the kemper for a week now and I'm quite enjoying it.
I have the powered rack version.

I have few questions that maybe you can help me answer. I read the manuals ( basic + reference ) a few times, but somethings are still unanswered or I keep forgetting about them.

I'm having a bit of hard time figuring some things out about organizing my rigs.

1. Is it possible to delete some rigs but keeping the actual amp profile ? I find some rigs don't sound that good, but if I switch to another cab, they sound completely different ( sometimes better ).

2. Can you explain me the difference between a '' profile '' a '' rig '' and a '' stack '' ?

3. When I'm browsing rigs, why are some '' placed '' or '' stucked '' together in the same '' folder '', when its not even the same amp ? For example '' Top hat Pushed '' contains a Tophat amp, A two rock amp, etc...

4. Is there a less time consuming way to rename profiles ? What do you think is the most practical ways to name them ?

This is my first post, sorry if it's not in the good place or if its too long.

Thanks