Using Kemper Kone Speaker with LC low pass filter ("X-over")

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    The Profiler Model referred to in this thread is ...
    ☑️ Profiler Head/Rack

    I'm afraid it's quite unlikey that anyone has ever tried this, but i thought i might ask, just in case.

    So has anyone ever hooked up a cabinet with Kemper Kone Speakers to a standard guitar amp (without cab emulation) and used a low pass filter (LC) between amp and cabinet, to limit the range of the Kone speakers to the range of a standard guitar speaker?

    Why would i want to do this?


    Well, i'm thinking about getting 4 Kone speakers to replace the stock speakers in my 4x12 cab, so i could use it as a FRFR cab for my Profiler.
    However i still have an analog Preamp / Poweramp that i would use once in a while, but i couldn't use it along with my 4x12 cab, once it is equipped with the Kemper Kones and i don't have the space for a second 4x12 cab with standard guitar speakers. The idea is, to add a switchable 2nd order low pass filter to the cabinet, so i could use it with the Profiler (filter bypassed) and also use it with a standard guitar amp when the filter is enabled, rolling off at 4,5kHz or 5kHz, to avoid any unpleasant frequencies in overdrive settings.
    Of course this is technically possible, the question is however, will such a setup provide a decent sound? :/

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    I'm pretty sure the Kone doesn't go lower than 60-80Hz which IS the same as a cab speaker. It just has a flatter response curve.

    Larry Mar @ Lonegun Studios. Neither one famous yet.

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    Well, I'm not concerned about the low end, but to my understanding, the Kone is a "full range" speaker, that will hence sound terrible when being driven by a standard guitar amp that does not limit the frequency range of distorted signals.

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    It is not a full range speaker. It is a broadband speaker and the Profiler is needed to operate the imprints - one of which is full-range mode.

    “Without music, life would be a mistake.” - Friedrich Nietzsche

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    How exactly would you define the difference between a full-range and a broadband speaker?

    Of course a single speaker system necessarily has a limited range compared to a 2- or 3- way system (that's why i put the "full range" in quotes) or at least needs appropriate EQing ( e.g. Bose 802) to achieve a proper frequency response.

    Anyway, the Kone will most likely not roll off at 5kHz, like most guitar speakers and is hence not suitable for standard amps if you do not apply any filtering.

    Unfortunately, the information that can be found on the corresponding product page has apparantly been collected from the marketing department and not from engineering, so there is no datasheet, containing a frequency response diagramm of the speaker.

    Edited once, last by Jandalf ().

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    Most likely this will work if you can get the curve right.

    Kone will be something similar to:


    Compared to a new issue greenback:



    So you should just have to get a steep enough drop but not a full block.


    There are other factors to consider in cone stiffness and magnet type and size but all in all I'd say give it a whirl. Even if it doesn't work well you still you end up with a kemper 412.

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    Don’t confuse full-range with FRFR - which is full range, flat response. They aren’t the same thing.


    It looks like a regular, single cone speaker, but it isn’t.


    The Kone has a regular speaker and a second, smaller speaker (called a whizzer cone), arranged concentrically.


    You can’t close-mic it - per Kemper. If you do, you will have a potential imbalance between the low and high frequencies and probably some artifacts in range where the whizzer kicks in.


    Frequency response is 50-10,000.

    “Without music, life would be a mistake.” - Friedrich Nietzsche

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    100% truth. You might be able to wrangle a decent "in the room sound" but trying to mic it could give you unwieldy results. If you do it though please post back your results. I'd love to know what you find.