Hi. Not sure if this should post here or audio so apologize if wrong thread.
I have new KEF KC62 I’m adding to my 2 channel Krell Digital Vangaurd and Martin Logan XT F200’s. Currently I have extra low end with the EQ’s in Muse.
Any suggestions where to start a new preset for the addition of the KEF sub now? Starting point would be great.
Thanks.
Hi, I also have the KC62. But since the initial setup, including your room, your sub’s settings and the placement of your speakers und listening position is all completely unknown to us it’s rather impossible to give you a proper starting point for your individual situation.
But I will try 
Assuming your amp is able to set a sub low frequency filter I’d try something from 80 to 120, depending on the (theoretical) low end of your speakers. Remember to leave a good amount of LF overlap between your speakers and your LF setting in the amp.
If your amp cannot do this for you, you’ll have to set the LF filter directly at your sub, otherwise (if set by amp) leave the sub’s frequency range fully open.
Hope your amp has a separate SW/LF output. Use this.
Read the sub’s manual carefully since its setup depends on amp connection and setting as well as its placement.
For listening tests use one single track with the deepest and loudest bass you can get. Change settings and placement according to your (edge) liking i.e. sensing not too much or too few bass.
All this without any DSP/MUSE activated.
Repeat.
Keep in mind, most music does not contain spec. much bass. So, don’t expect boom for every track. That’s not the intention. Though, almost every track will benefit from a sub. Check this by simply turning off and on the sub.
If you feel you don’t quite get what you want after all this, you may enable MUSE and carefully change frequencies to your liking.
Be reminded, engaged MUSE creates more CPU load and may bring your roon server to some limit, esp. if applying to DSD or even multichannel DSD.
Have fun.
In case you want to do a deeper dive into audio improvement regarding frequency response, delay and room compensation you may look for FIR filters using REW with a microphone and target curves. This may bring a lot more enjoyment to your music, but needs a significant amount of time if you’re not so familiar with REW.
Thanks for the reply and intel. And to boot you have the KC62 also! My integrated Krell digital vanguard has no tone controls or crossover settings…pure signal. Speakers are the Martin Logan F200 towers. They do go real low but no real punch or texture in bass at lower volumes in my room even with Muse DSP, although helps a lot. Hence the sub addition and again just music. With that any recommendations on sub settings before trying any Muse DSP? I will be connecting via high level speaker inputs on the KC62…Krell has no sub out. Thanks.
Okay, that limits the range of possibilities. But you can do something.
How is the lowest frequency response of your speakers on paper?
You may add about 30 to 60Hz to this lower end. Use this value as the LF filter at your sub’s dial.
Make sure all the other settings and options of your sub are set according to its manual.
Start with the power(?) dial at 1/4 or 1/2 open.
Do not change polarity.
And try a bit. Again, without engaging MUSE.
These are Martin Logan specs:
Frequency Response
27 Hz - 25k Hz
± 3 dB
What do you mean by power dial? You mean volume on sub?
Thanks.
Okay, I’d then choose 60 to 80 Hz for the sub.
Right, the volume knob 