Posts by Derik Roblin

    Hey guys,


    I’m looking into purchasing a Gemini 2-P to go with my Kemper Power Rack.

    I would like to know what the max wattage meter allowance is with the cabinet.


    It says it’s 500 watts and each speaker is 250 watts. So does this mean I need to make sure the wattage meter on the Kemper stays below 250 watts?


    Furthermore, If I use two of the cabs, what is max wattage meter required on kemper?


    Thank you

    Hey all,


    I found a pretty cool effect in the Kemper to give a guitar swell feel and overall, it sounds great! The problem I have with this effect, is that there is a humming that occurs at some spots when I transition to another note and it is pitchy hum. I understand that with a heavy delay and swells, that this could create some hum, however is there something I can do to minimize this? Would a 2nd noise gate do the trick?


    I haven't tried anything yet since my rack is at our jam space and I am trying to get some feedback so when we jam next weekend, I can try a few things.


    Thanks!

    Well that explains a lot! 😂


    The main reason for me wanting to push the volume is our guitarist is going through a 120 watts 2x12 mesa , turned up only half way and he is always louder than me even when I am close to max volume on the kemper .

    I’m wondering if I increase the rig volume a bit and leave power amp boost off, that I’ll still be at a safe volume and still get a bit more volume if needed.


    I’ll test things out again tomorrow and see what happens.

    I noticed that cut out only happened during clean tones and not distortion with power amp boost at half way.

    Right, so the wattage meter was around 250 watts when it dropped out, not 600 watts so this is why I’m not sure I understand .

    The manual says 600 watts for sound to drop out, not 250 watts.


    also how can the sound ever go more than 600 watts when it’s designed for 600 watts max?


    what is the point of the power amp boost if that function can potentially put our amp in danger over 600 watts?

    Hey all,


    So I went and had my 4x12 Kemper Cab re-wired for 4 ohms through a tech and tested it out tonight. I wanted to test it at high volume and was around the 250 watt mark and after about 30 minutes, it started to cut out and I am not sure why.


    I posted a video of the sound cutting out so you can hear when it happens and what it sounds like.


    VIDEO HERE:


    The cab is 800 watts (4 Kemper speaker), the Kemper Power amp is 600 watts. I had the power Amp boost at +6 to add a bit more volume and figured, this should be fine since I am well below 600 watts use of the power amp and well below 800 watts in the cab.


    Is there perhaps a specific setting in the output section or anything that might not be set correctly? The cab itself is wired correctly, so it must be the Kemper. I also haven't updated the Kemper yet to latest software. Could this fix the issue?


    Thank you for your help!

    It’s wired exactly as per the Kemper Diagram that it came with for all the other wires but the blue one which I removed before playing the rig .


    the blue wire was going from negative (Bottom right speaker) to the positive (Top right speaker). Again, there is no longer that blue wire in the cab.


    So without the blue wiring, everything else is correct as I followed the 4x12 Kemper wiring diagram that came with the speakers and then had a buddy of mine who’s an electrician check the wiring to make sure and he confirmed it was correct.


    So what is wrong exactly with this? The wiring itself is 16ohms and this is not correct?

    What I need to know is if I should start from scratch and re wire everything.


    I assumed that the speakers wires inside when I bought the cab were the same and would work with Kemper speakers .


    I did try again tonight at max volume + power amp boost at 5 extra for a short time, and it worked fine. But I wonder if I jam longer at that volume if the same issues will occur.


    Does anyone recommend I buy new wiring and if so, can you point me in the direction of the right wirings to buy and from where?

    I’m using a speaker cable from the amp to the cab, yes.


    I did also go passed 200 watts using the amp boost at one point last night. Can I go over 209 watts without a problem?


    The wiring on the inside from cab to the speakers are the same wires that came with the original cab and worked with the previous owner


    Here are pictures with the configuring I used following the diagram that came from Kemper.

    Please note that the (BLUE) wire was removed as it was and shouldn’t be there.


    Everything else was connected properly.

    Is it possible that because of the vibrations the wiring can be coming off it’s connector and resulting in sound loss?


    I didn’t solder them to the connecting points however I did make sure they are secure enough.


    I’ll definitely be checking this tomorrow and as for the way I connected the wiring. It’s correct as I had someone with experience double check my work so not to sure what else it could be.

    Derik

    So I used the amp set up for the first time and everything was fine until later during our jam my volume started to cut out and crackling. I turned it down completely and back up again and then it was fine for a few songs, then same issue happened.


    I tookd the screen off to check if one of speakers weee blown and everything looks normal:


    Is it possible that this can happen if either one of the wires I connected came off the speaker because of the vibrations?


    This issue should not happen no matter how loud I turn up the amp since the cab is supposed to handle all the volume from the Kemper power amp