Posts by perlan77

    I've now made a few Direct Amp profiles, Studio Profiles and Merged ones and found the Studio and Merged profile does not sound the same, very similar but still with a noticeable difference. I suspect that could be due to slightly different results when making the DA and Studio profiles and having refined them both.


    Something that also struck me as odd is after I created a Merged profile I found that de-selecting the Cab block in that profile doesn't sound the same as the DA profile it was based on?! Even though the audio sounds like garbage, i.e no cab present, there's a big difference in the sound, both level and saturation.

    Is that a bug?


    Another feature that would be nice is if the merged profiles upon creation were to be tagged by the KAOS so they could be easily identified in Rig Manager as a Merged Profile. That would be far easier than to trust the masses to stick to any logical name convention

    :)

    Do not use an attenuator while profiling, the results will be poor.


    What you need to do is get some kind of decibel pad in the signal chain to lower the signal, rather than attenuate the amp.


    Do you have an audio interface? Route the signal through your computer and just lower the volume of the channel before sending it to the Kemper. This will do the trick.

    One of, if not, the biggest advantages of Kemper as a product is to profile a tube amp running hot pushing a cab speaker into distorsion and yet bring it down to line level for studio work, live application or home use. The sale pitch of the Kemper DI suggests it can handle 500W so the whole thing doesn't make sense IMO. If their own product, the DI, can't handle a high powered tube amp it kind of defeats the whole purpose for what it was designed to do. There shouldn't be any need for any intermediate device controlling the level, if so it should be clearly advertised with something like "please be aware for amps with a high output a decibel pad is needed".

    I still think it should be able to handle the amp and the support team claims they've profiled several other similar amps without issues so a RMA has been issued.

    A new device is on its way so let's see.

    I suggest you contact the Kemper support team.

    I've got a support ticket raised and we've been emailing back and forth a couple of times trouble shooting but so far no luck.

    The support person said they've profiled other similar 100W amps at all gain and master volume stages using Kemper DI with no issues.

    I've checked and replaced all cables, even done a hard system reset but still the same issue.


    One of the amps I've tried doing a DA profile of is a Marshall YJM100 and the only way to profile it was to engage the built in attenuator and bring it down to about 55%, otherwise the Kemper wouldn't have it, but then it doesn't sound the same.

    No issue capturing a normal studio profile with everything cranked

    I suggest you contact the Kemper support team.

    I've got a support ticket raised and we've been emailing back and forth a couple of times trouble shooting but so far no luck.

    The support person said they've profiled other similar 100W amps at all gain and master volume stages using Kemper DI with no issues. I've checked and replaced all cables, even done a hard system reset to rule everything out but still the same issue.


    One of the amps I've tried doing a DA profile of is a Marshall YJM100 and the only way to profile it was to engage the built in attenuator and bring it down to about 55%, otherwise the Kemper wouldn't have it, but then it doesn't sound the same.

    No issue capturing a normal studio profile with everything cranked.

    I just bought a Kemper DI and today I was trying to make a Direct Amp Profile of a 100W marshall head and a 100W EVH5153 both hooked up to a EVH 4x12.

    First I tried the EVH and made the connections exactly as Manual 7.0 "Profiling an Amp 287" and lowered the return level until the output level was green (at -7dB or so)

    When trying to make the Direct Amp profile using the Kemper DI, the profiling process stopped saying something like clipping was experienced and the volume was too high and needed to be reduced. Selecting "no cabinet" made no difference.

    I checked the level at my interface (connected via spdif) and it was through the roof. I had to go down to -30dB at the return level in order to see some dynamic movement instead of all maxed out. It would then create a profile but finish with a message saying something like "a compressor was found in the chain and I should check the accuracy of the profile" (paraphrasing).

    Creating a studio profile with my SM57 worked fine.

    What am I missing here? Is the DI unit faulty?

    Hi.

    I've just got the new Kemper DI and am about to profile my amps..yet again :)

    I've realized I'm a bit confused and got some questions how to make the best Direct Amp (DA) / merged profile


    1st question, a merged and studio profile should theoretically be 100% identical right (assuming you didn't change anything between taking the DA and Studio profile)? Or are they just about the same (again theoretically)?


    2nd question, I've seen some suggests refining is no longer needed as of later OS's, is that the case? The 7.0 manual still suggests to refine it (I'm on OS 6.0) ?


    3rd: Assuming refining is still advisable, I'd like to get both studio and merged profiles which makes me confused how to go about getting an as accurate DA profile as possible. Should I refine both for the DA profile and then again for the studio profile?


    Doesn't refining introduce a level of "subjectiveness" in lack of better words? Say you do two studio profiles of the same setup without refining both should be identical, but if you were to refine both you will probably end up with two slightly different profiles subject to your attack, choice of chords, length of strumming and so on. My understanding of a merged profile is you're doing a DA profile first , then a studio profile. Then the Kemper takes the studio profile and subtracts the DA and voilá, you've got the cab separated. Then combine the DA and the cab makes a merged profile. To make a perfect merged profile you're not suppose to change anything between making the DA profile and studio profile, which makes me confused wether to refine or not. If you do refine both the DA and the studio profile , couldn't that result in two different outcomes later making the merged profile different from the studio?

    Last time I profiled my amps was with the OS version (3.0?) when they introduced merged profile as a feature but I found the studio and merged profiles didn't sound the same (profiled the DA with countryman 85) with the studio profile much more accurate. Can't remember if I refined or not, possibly did.


    Hope my questions makes sense 8o

    Hi

    My understanding is that Kemper and it’s AD’s was designed around 44khz (but used other frequencies internally) but now it’s able to work with 48/88/96. Is that done natively or a matter of upsampling from 44k?

    Is there any (theoretical) difference in using an old profile made with 44k and then hooked up with spdif in 48k vs making a new profile (assuming identical conditions) in 48k and using spdif 48k?:?:

    Or have I got it wrong and the input AD’s are using something higher (say 192khz or whatever) and the spdif will always be a downsampling case?

    I’m probably missing something obvious but if anyone can enlighten me I’d appreciate it


    And yes, I know this 44/48/88/96 is likely not noticeable even in the best studio environment on the planet and it’s all in the fingers anyway but I’m curious in a strictly technical theoretical aspect of it

    I've used the Kemper for a year or so and am loving it! During my recordings I've recorded the main stereo out as well as GIT+STACK through S/PDIF and I've used Focusrite Scarlett 6i6. So in essence, that's 4 tracks simultaneously recorded containing the full stack with FX through the main stereo out plus the dry amp track as well as the dry unprocessed GIT signal.
    Now I've got some new (better sounding profiles) so I'd like to reamp the GIT but can't for the life of me understand the signal routing in Logic pro X. I've seen a couple of guides on youtube but that's been with Cubase or other DAW's. Anyone got a reamp setup that can share a quick guide how to route the recorded GIT into the Kemper and back into Logic?
    All the best!


    No one, really?!

    Hi guys.


    I noticed a change in the sound (have a profile of my own amp) when upgrading to firmware 2.4.0. To me it sounded more dark but I thought I was hallucinating
    Then I went to this forum and found more people experienced the same thing meaning I couldn't have imagined the thing. I decided to do a quick test to see if it was true. I recorded a short 2-second clip with my Line 6 back track (to ensure the playing was identical) and played that clip through with the different firmwares.
    This is the order of the 4 clips


    1. My existing 2.3.3 upgraded to 2.4.0
    2. Downgraded to 2.3.3 and did a hard reset (tuner+top left button above the LCD) and imported only the one rig
    3. Upgraded to 2.4.0 plus a hard reset followed by a complete restore of all rigs and settings
    4. Hard reset af the 2.4.0 and imported one rig only


    What's your impressions?
    Link to soundcloud


    I also noticed a small volume change between the takes that I can't explain.


    Rgs John

    Sorry for asking a newb question but if it's being transferred digitally through S/PDIF, what's with the clock sync? Shouldn't bit for bit be transferred regardless? I'm completely lost here so bear with me please :). I basically unpacked the thing, hooked it up and played happily through the normal outputs but am about to start recording some stuff so while on the subject of S/PDIF...


    I've got a DAW with 4 channels so here is my idea:
    Record the dry amp plus the raw guitar signal through (S/PDIF) on channel 1+2. In the same time have the normal outputs for the Kemper to feed my FX and possibly record that on channel 3+4 on my DAW. Later I'd be either using plugins for FX on the dry amp signal (from CH1) or stay with the recording on 3+4 for a wet/dry/wet thing
    Am I onto something here or am I far off?


    My understanding is (was) S/PDIF is be the most optimal way of transferring what actually comes out of the Kemper (no unnecessary AD/DA going on), right?


    Now another question, is there a latency in the S/PDIF connection? To stay with my present DAW I will need a coax to toslink adapter, anyone has any experience with that? Will that add latency? I'm thinking electric - optical - electric..
    Am I better off getting another (cheap) DAW that does support coax S/PDIF and just aggregate the DAW's on my Mac Mini?


    Again, I'm all new to the Kemper as well as advance home recording/reamping so please excuse my ignorance.


    Cheers!