Sound issues

From WiKPA
Jump to: navigation, search

Clipping the Profiler?

Due to the format of the numerical data used, it’s impossible to clip the Profiler (i.e. to saturate some of its circuits). This used to happen with digital devices which used a smaller format for numbers handling. For example, you could set a booster so high that the following stage/stomp box input was distorted. It can’t happen on the Profiler (let’s say that your boost should have a gain of 300,000 x or the like to saturate the next stage).

There are only two stages of the Profiler that can be saturated (clipped): the input (for example with a booster after your guitar, but too hot a PU could do the job as well) and the output (with a too high master volume, for example). That is, where an A\D or D\A conversion takes place, because the acceptance of physical electric circuitry can’t intrinsically be so high. So, should you hear any digital clipping, these are the two item to check first.

You don't need section level meters, as it's virtually impossible to clip a signal. The exception is the input and output, where you find a level meter.

-ckemper
 


Q: I know than when the light above master turns red, this means my sound is clipping.... I’m pretty sure it is because I am getting a distorted recording and sound from the monitor on a very clean rig with no gain. Why is it clipping? Do I need to adjust the "sens" things?

A: The output light turning red means you’re clipping the output. The sens parameters control the input clipping. If the input light is also turning red then you can turn down the clean sens until the input is no longer turning red.

If you are green on input, but clipping on output, the issue is within the rig and typically one of the follow-ing: clean sens too high (on clean rig), speaker volume too high, profile volume too high, or post effect (such as a boost) volume too high.

Another way to lower output volume is to add an EQ in the X slot and leave it flat but reduce the volume until the clipping goes away. This will probably be the least tone-affecting.

For compensating volume loss you can increase Master Volume.

Volume Leveling

Q: My Profiler is connected to a Focusrite Scarlett 2i2 and out to HM50s. Keeping Master Volume on the Profiler constant and all volumes on the Focusrite constant, using the same guitar, there always seems to be a huge difference in volume between distorted and clean profiles (well, most clean profiles). Raising the Clean sens or the rig volume or the cab volume of a clean profile (to match that of a separate distorted) profile would usually clip the signal (shown on the Focusrite 2i2).

A: DonPetersen - The problem here is the higher perceived volume of distorted sound (since they are heavily compressed/limited) versus the higher peak levels of clean sounds: greater dynamic range, transients are not limited and at the same time lower perceived volume. Clean sounds tend to have most of their energy in the attack, which lasts only a millisecond or so. The Profiler has a few neat options to dial down the attack:

  • turn up the gain just a bit until the attacks soften/melt;
  • use the Pick parameter (obviously in the negative range);
  • use the compressor in the Amplifier section;
  • put a Soft Shaper post Stack and use it as a saturator (very low drive setting).

A: tylerhb - Just use the Amp compressor and you will be fine.

Having a hard time profiling your amp ?

Some amps can be difficult to profile because they want to see the pickup at their input rather than a line signal. In these cases, it might work if you used a pickup load simulator.

There is a small number of amps that are hard to profile because of uncommon circuits. This is a list in progress:

  • Binson Hi.Fi.;
  • Mesa 5:25;
  • Mesa Triaxis;
  • Marshall JMP 1;
  • Peavey Rockmaster preamp;
  • Peavey Ultra+.


I’ve had a few amps that just would not profile too well until I tried backing the mic off slightly, and lowering the profile record in gain a tad. Lower the bass (if that’s what the problem area is) on the amp… let it profile... then at refine turn the bass up again.

Some amp cabs have direction chambers that emit in a wide angle so what you think you captured actually isn't… Try blowing white noise through the amp, then move the mic until you feel the presence heighten. Normally you do this with phase issues but still works on some problematic amps.


Q: Just tried to profile my 5150 combo. It sound glassy and not like the amp... It has that weird microphonic sound to it. sm 57 2 inches off grill toward side of cone. I tried to compare it to other profiles on the exchange and it seems like this may be a characteristic of profiling this amp…

Check the definition in the profile, sometimes if you profile with too much gain, then when you refine the transients "pop" causing the Kemper to think its a tone related. Normally dialling this down a bit can improve it dramatically.

-and44
 


Not satisfied while listening through headphones?

Be aware that listening thru headphones is a different perception than listening to speakers in a room with natural reflections. That refers to any music, but especially to a guitar amp.

-ckemper
 


Noise

Although I wasn't picking up radio stations, I was getting loads of noise. I formatted the flash memory on the Profiler and redid the presets from factory default; after the total reset everything sounds great again. My theory is an internal gain control is set to max and nothing resets it except this.


Loop's noise gate borks effects

Q: It kills the depth of the external fx… My settings for Mix and Volume in the loop are Mix 100%, volume untouched.

Your guitar has an extremely low level from your guitar into the Profiler and into the loop. Set the Clean Sens to a higher value and the noise gate effect will go down.

-ckemper
 


Aux in volume affected by rig volume

Q: When I browse through various rigs, the audible Aux In volume level changes with each rig, even though the Aux In Volume parameter doesn't change values.

Rigs that have the stereo loop enabled take priority over the aux input even when Aux Input is turned up. Stereo Loop gain is saved for each rig unless its locked. Before the Aux Input in v1.6.0, I had nearly all my patches with the Stereo loop enabled. I resaved them with Stereo Loop off since Aux Input is post effects and I prefer that in my application.

-musicman65
 


I don’t like my hi-gain profiles

Q: I profiled a Hellcat, red channel. What I'm hearing from my hi-gain profiles is over-compression, particularly in the bass. Whereas the amp track is stiff and chuggy, the Kemper track sags. In addition, the Kemper is picking up a ton of sub. The mic does not put out much below 100hz, but the Kemper seems to think so. Dropping the dist sens doesn't help – that just reduces the overall saturation, not the bass strangulation that's happening here. Definition is already at 9.7 – nowhere to go from there. Filtering out bass using Studio Eq before the stack just eviscerates the sound. I use an SM57 and a JLM Audio preamp.

Remove the audio preamp from the chain before the Profiler and try again with the 57 directly into the Profiler’s XLR input. Be sure to set the return level right. Several users who also used special mic preamps reported suboptimal profiling events. Perhaps it might be the internal compression which has an impact on the dynamic profiling.

-tylerhb
 

I just profiled a Hellcat this last week with no problems at all, so it’s doable with what you have. the return level can be a bit of a pain, but try to let it be at 0DB for the best part. This means that with a 57, the input may seem to quiet, but the Profiler does auto-adjust the volume at "store" time.

-and44
 

Some of the most discriminating producers and players (Andy Sneap, Ola Englund, Keith Merrow and many more) are getting great, accurate results from profiling hi gain sounds. Follow the above-mentioned advices!

-DonPetersen
 


All overdrives way to loud... how can I fix this ?

Q: I'm trying out some drives inside clean patches and the overdrive pedals are way too loud. Each and every one is at -5 (lowest it will go and still a bit too loud for my tastes). I have messed with distortion sense to -3, but anything lower is messing with my dedicated gain patches. HELP! I use a mix of profiles, some are a base clean that then I engage FX including overdrive. Others are dedicated patches for rock rhythm, lead, etc... I need both options.

This is the classic application for Clean sens. Turn it up until your clean sound matches the distorted sound. Then set the master volume to taste.

-ckemper
 

I've actually noticed this, but only on one rig so far. I tried to replicate it on another rig but was unable to, so I think it may be rig specific. I also adjusted the gain level way down from where the profiling process set it, so that may also be a factor. Setting Clean Sense down -12 db did not fix the issue - the cleaner the tone was when I had the stomp engaged, the louder the volume was; and there remained a large discrepancy in volume when the stomp was toggled on/off. I'm on FW 2.2.0.

-meambobbo
 


My Rig Doesn't Sound like the Clip

When downloading a profile after having listened to a clip from another player, you should be aware that the guitar and the PUs you’re using are really meaningful, just like for a real amp. Please consider the guitar you are playing, and the pickup choice! The Profiler is very demanding when it comes to the quality of the guitar connected. That is especially the case with profiles from boutique amps.

Also the monitoring system you’re using may make a difference, since not all the FRFR systems (despite their name!) sound the same. Last, but not least, check your Clean sens and Dist sens are setup properly.

As regards playing back a rig/profile the way it was meant, the EQ, the Power Sagging and Clarity parameters (among others) represent the 'amp as profiled' when set to '0'. Gain and Definition are assigned values.

-DonPetersen