Kemper os 5.1 Latency Test (+ Line 6 G10 test)

This is really interesting.

Could you test with Transpose at -5 in the first fx block with just an amp on, no fx?

Thanks in advance.

Quote from Karl

This is really interesting.

Could you test with Transpose at -5 in the first fx block with just an amp on, no fx?

Thanks in advance.

Transpose with pitch = -5 placed at STOMP A.

Recorded on S/PDIF, Git/Stack setting:

From manual:
The left Git signal is the pure instrument, with noise gate and Volume Pedal (if Volume Pedal is set to “Pre Stomps”).
The right Stack signal side will carry the Stack signal and does not include any post amp effects.

2 or 3 ms, depending how you read the signal representation...

[Blocked Image: https://s8.postimg.org/c8ab95cwl/transpose.jpg]

EDIT

I did second test at the same rig, same Transpose -5 at stomp A for Git/Stack setting and now 12 msec...

[Blocked Image: https://s28.postimg.org/7txfifzzx/transpose2.jpg]

EDIT 2

"Crunch" initial rig - 14 ms measured
[Blocked Image: https://s32.postimg.org/rouvlp8d1/transpose3.jpg]

EDIT 3

"Crunch" initial rig with gain at 0 - 11 ms measured

[Blocked Image: https://s16.postimg.org/xze8z5txx/transpose4.jpg]

Are there any other variables in the test, @skoczy? 11-14 ms is a lot of latency.

14 ms with default gain of Crunch rig at noon.

11 ms with the same rig with gain at 0.

Quote from skoczy

14 ms with default gain of Crunch rig at noon.

11 ms with the same rig with gain at 0.

That looks about right I think from my own experience (it's definately noticable).

I actually really like the Kemper's Transpose effect and I've used -5 as this simulates a 7-string tuning. I think activating "smooth chords" adds a bit more latency as well. However, I've ended-up using a Digitech Drop @ -5 instead of the kemper due to the latency. The Drop isn't perfect either and has a slight warble when playing chords and there's still detectable latency. I also add 2-3 leds of presence to get the tone closer to the normal sound of my guitar.

There's still room for improvement in this field of fx, but, I find the Drop is the most usable atm.

Quote from skoczy

14 ms with default gain of Crunch rig at noon.

11 ms with the same rig with gain at 0.

I got that, but given your first test which had 3 ms latency, I'm wondering why the delay was so evident in the later recordings. Could it be a bug with the transpose?

Quote from nightlight

I got that, but given your first test which had 3 ms latency, I'm wondering why the delay was so evident in the later recordings. Could it be a bug with the transpose?

This 3ms latency was on other rig "VOX Boutique OD" if it matters.

I've heard that playing down lower frets will cause more latency than up high, because the computer needs to capture more samples to process it properly (more spaced apart wave forms).

Makes sense.

I've found if I turn everything off on the Kemper and just use Transpose -5 (smooth chords off) through computer with a vst like TH3, I get a better sound than using the Drop pedal for distorted stuff. The basic unaffected sound is better using Kemper for sure.

Quote from Karl

I've found if I turn everything off on the Kemper and just use Transpose -5 (smooth chords off) through computer with a vst like TH3, I get a better sound than using the Drop pedal for distorted stuff. The basic unaffected sound is better using Kemper for sure.

Not sure if I understood correctly, but where do you place the Transpose effect in your Kemper's signal chain? It works best if it's placed before the amp section, especially for overdriven sounds.

Quote from Robrecht

Not sure if I understood correctly, but where do you place the Transpose effect in your Kemper's signal chain? It works best if it's placed before the amp section, especially for overdriven sounds.

1st block, everything else off into PC via spdif of 18i20 into TH3. In my experience, the first block is the only block that it should be used in, or first effect in the chain.

Hi!

I wonder if there is any latency between the auxiliary input and the headphone out?
Why? I use this input for mixing the monitor signal with my guitar for in ear monitoring.
So if there is lets say 3-5ms latency from the kemper plus 3-5ms for a digital wireless that alone might be acceptable.
But if the monitor signal has another few ms of delay until I hear the rest of the band, and then the 6-10ms latency from my gear starts, my signal has a total of lets say 12-15ms latency to the music around, which might be relevant already?!
So could you check for the latency from the Aux input routed to the headphone out? I would really appreciate

Thanks,

Sebastian