Clipping

The Kemper goes straight to Channel 9/10 on the Soundcraft and then out via USB. Maybe the Kemper signal is overloading the computer interface / sound card
Have you engaged the PFL switch on channel 9/10 to verify the level while playing the Kemper?
 
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Have you engaged the PFL switch on channel 9/10 to verify the level while playing the Kemper?
Yep, early to mid yellow only. You taught me well!

BTW, the Kemper is NOT clipping. It has green or red meter lights for your input signal to let you know that. Also, in case anyone though of this, phantom power was never on.

EDIT - This appears to be a compression issue
 
Are you hitting the Kemper with a signal from a compressor pedal?
No, that was the primary suspect from last night. It was the first thing I shut before beginning the testing today. Shutting t did reduce the clipping. The, shutting the Kemper noise gate (no reason it should have even been on) helped a little more. But there was still a flat wave form when I strummed hard, even with the channel gain on zero and all pedals and Kemper effects off.

I need to research compression from the Kemper. I am going to look at my Kemper out hookups and see if changing the output connection (I think there are options) will help
 
I need to research compression from the Kemper. I am going to look at my Kemper out hookups and see if changing the output connection (I think there are options) will help
There are options, but I have not done any digging….I’ve been extremely pleased with it set simply stereo.
 
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OK, so I WAS using XLR left out from the Kemper to XLR input on SC channel 9/10. I now used 2 TS cables from Kemper left and right to S/C channel 9/10 (I could have used 1 cable from Kemper main left TS output, but I wanted to stick with channel 9/10 for this experiment, which is a stereo channel). Channel gain needed to be at 40% to get matching level. Waveform is below and not compressed. Minimal clipping at highest peaks - and based on the waveform and metering, it bothers me that there is any clipping at all.

clipping3.JPG
 
OK, so I WAS using XLR left out from the Kemper to XLR input on SC channel 9/10.
Oh! I had assumed that you were running TS from the Kemper R&L to 9&10. That is what I run. Simple and effective. Looks like your Wav-forms have improved dramatically though….maybe knock the input gain/trim on the Soundcraft back a smidge…. But it looks much better now.
 
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Oh! I had assumed that you were running TS from the Kemper R&L to 9&10. That is what I run. Simple and effective. Looks like your Wav-forms have improved dramatically though….maybe knock the input gain/trim on the Soundcraft back a smidge…. But it looks much better now.
I use the TS outputs to go to the patch panel and then out to the monitors for stereo play.

The XLR out of the Kemper is super hot, at least on my unit. Now we know! I will do more research and report back if I find anything to the contrary
 
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Oh, and you also identified the compression in the first place! Now I know what I am seeing a little better
Yes!!! Much yes! A learning experience! I learned about this type of thing from some crappy mic’s that couldn’t handle the SPLs I needed, and some crappy rack mounted, cheap, compressors….the two experiences were separate…but ended with the same style of Wav forms. I remember it so well.
:cheers:
I'm glad that you had the experience….and were able to learn from it.
Sunny side up!
 
Here is info that I have located so far regarding attenuating the output signal




 
Another helpful thread from the official Kemper forum. I have going to assume this also relates to the apparent compression problem for now

 
Yep….some of the answer seems to be right there. The Kemper XLR is putting out a line level signal. The Soundcraft XLR inputs expect to see a microphone level…while the 1/4 inch inputs on the Soundcraft expect to see line level. There’s a bit of a difference there.
:cheers:
 
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So, I using the left XLR output, I adjusted the Main Output (set to mono since I am only using one XLR, and this is guitar) and set the volume to about -20dB with the channel gain at about 12dB, just off the minimum (FYI - I have been referring to "zero" channel gain, but that was inaccurate - the Soundcraft goes from 10dB to 60dB). Compressor and noise gate were off. This was a very workable spot. The arrow shown below is how you access these settings in Rig Manager.


output.JPGe
Here are the Soundcraft settings for this test

sc output.JPG


Once again, thanks for helping me figure this out!
 
So, I using the left XLR output, I adjusted the Main Output (set to mono since I am only using one XLR, and this is guitar) and set the volume to about -20dB with the channel gain at about 12dB, just off the minimum (FYI - I have been referring to "zero" channel gain, but that was inaccurate - the Soundcraft goes from 10dB to 60dB). Compressor and noise gate were off. This was a very workable spot. The arrow shown below is how you access these settings in Rig Manager.


View attachment 70133e
Here are the Soundcraft settings for this test

View attachment 70134


Once again, thanks for helping me figure this out!
I have a few of these, from the old days- before I had anything with an onboard pad, for knocking down line level sources….
I have a few of the XLR/XLR -24dB. They have come in handy on occasion.
 
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