Posts by Antipodes

    I find this surprising - with regard to the physics of dispersion. Bass frequencies are omnidirectional and treble frequencies are progressively more directional. Waveguides are used to increase dispersion of highs - eg in studio monitors. So dispersion is determined by frequency and the shape of the radiating surface and its surround.


    If DSP can impact beaminess, the control might involve filtering highs that contribute to the perception of beaminess. Otherwise, DSP can control the levels of each frequency but it can also control the phase. Perhaps phase effects can impact perceptions of beaminess. I would be interested in some clarification from Kemper staff.

    when the Kone is 4 ohm can i use it with a 8 Ohm Amp ?

    Transformer coupled tube amps usually tolerate a mismatch of double or half the impedance - so a 4 ohm or 16 ohm cab on an 8 ohm tap. usually works OK. That is the rule of thumb as they say.


    Transistor (solid state) amps not so much. Half the impedance means you are demanding double the current from the power supply and it may well fall short of delivering that at its rated output. Delivering what it can manange by way of current into a lower than recommended impedance is going to stretch a few relactionships.

    So connecting 2 ohm cab(s) on power amps rated for a min of 4 ohm can blow up your amp.


    How well they handle things at well below their rated power - eg asking <100 watts of power from your power head when it is rated at 600 is another matter.

    Don and Ingolf are correct I think.


    Detail is a term used in recording and audio tech and can be read as code for clarity and/or extended frequency response. If the mic introduces distortion (ie adding harmonics to the incoming waveform) or noise (adding harmonically unrelated frequencies) that would tend to mask parts of the audio signal and contribute to a lack of perceived clarity.


    Detail also involves the capturing of high frequencies that could get filtered out by mics that have limited treble extension. In recording applications, particularly on cymbals, strings and human voices, capturing all those frequencies can improve the perceived realism of a recording.


    Most mics and even the amplification signal chain (mic pres) colour the sound. These colourations may or may not be desireable when it comes to something like a guitar cab. It is really a matter of the preferences of the profiler and player.


    A mic like the SM57, which is probably the most frequently used mic on guitar cabs, adds it own significant colourations (eg a big presence peak just above 5kHz and attenuated high end) and is - at least in part - chosen over other mics for that very reason.

    I installed the 79 beta 2 of RM on a Win 8.1 machine. RM did not crash on startup as it did with beta 1 but the app window (opened fully ) remains mostly occupied by blank space. All the data (folder tree and currently open folder to the right) is located in the upper left quadrant - so bottom half of the screen is just the dark grey background colour and there nothing is nothing but grey background in the right third of the display. This is the appearance without synching RM to the KPA.


    This is on Win 8.1 64 with 16 GB RAM and an i7 (haswell) with 1920x1080 FHD 17" laptop screen.

    There are lots of Win 7 era machines that just don't run Windows 10 properly. If you're going to persist with it I recommend ensuring you have at least 8GB of RAM. I've got an old laptop from around 2008 that's been Win 10 for years and no issues. On the other hand we have older graphics workstations at work that just won't cope with it, even though they've got decent specs.

    Win 10 will not install on anything before Ivy Bridge.

    The whole Win 8/10 thing is counterproductive for Kemper IMO. Think about it. People have only so much disposable income. If they have to buy a new computer when they otherwise wouldn't need to, that is a chunk of change gone west that they could have used for something else. How many people would have to buy a new PC instead of a Kemper Stage to cancel any advantage the they got out of not having to support an OS still used on 400 million PCs?


    Consider also you could buy a second hand PC with Win 7 for $100 US or less if you didn't have one or more of them lying around.


    What about a potential switcher who currently edits patches on his/her GT1000/ Helix/AFX box from their Win 7 PC. Should they switch now that there is an Kemper editor? Well, hmm - they willl need a new PC AND the KPA. Suddenly, that is a steeper hill to climb. Hmm, maybe later.

    The new RM build installs and runs OK from a clean install (no previous RM2 install) on a borrowed Win 10 machine but on the Win 8.1 machine I was planning to use it on (previously had RM2 on it) , RM3 beta crashes at the end of its startup routine.


    The Windows error message fingers the editor (Appcrash, Rigmanager.exe) each time. I tried a repair install and rebooting - no dice. The crash happens without the KPA attached.

    So - if I have a Win 7 machine and I install 7.16 on the Profiler ( to test RM 3 beta with another Win 8/10 machine) - will Rig Manager 3 beta or RM 2.3.14 running on Win 7 64 still work with the Profiler after OS 7.16 beta is installed?


    There was talk that Win 7 would run the new RM but not the editing functions.

    Kemper staff mentioned in this thread that they had a release candidate in preparation for internal testing. That is what the closed beta team will be evaluating. If it seems ready, a public beta will be released. This process is pretty standard for digital hardware products and computer software and will have been followed with all previous KPA OS updates of any significance.

    OK thanks - that is interesting. Seems like getting the right channel from the main stereo outs is the way to go.


    If they do build a KPA V2, having the power head version support stereo/mono operation - eg Stereo 300 W +300W /bridged Mono 600 W would be highly desireable given the quality reverbs and delays we have now.

    Can the powered out and one of the main outs constitute a stereo pair (FX wise)?


    So, in this hypothetical scenario, powered out takes left side of main stereo mix (minus cab) and main out right takes right side stereo mix (with cab).

    Just a query on the power head: can you use the power head's powered output as part of a stereo pair - with a monitor out or line out. This would mean that you could drive a cab directly with one of the stereo channels and send the other side of the stero pair to a power amp + cab OR an FRFR monitor.


    Ideally, you could set up a volume offset to match levels of the two channels of the stereo pair so that they could be controlled with the KPA volume knob.

    No punctuation, huh? Interesting.

    I suppose you could say it uses "and" as a form of punctuation: Each idea, which could stand as a sentence on its own, is joined to the next with "and". This sort of endless, run-on sentence mimics the verbal style of people on artificial stimulants.


    Coffee anyone?

    Toast ME doesn't support FX presets on 0S7 - they have shifted from an individual preset file format to a database format apparently. Otherwise it works from what Damien and others have reported.