Very Quiet Microphone

Do you have PodFarm or Gearbox open in stand alone mode, if not, open PF up and in the mixer you have a db slider and a +18db boost, see if that helps to start.

Many of the interfaces DO NOT have mic preamps in them. You will need to get either a mic preamp or a small mixer to use. The signal level simply needs to be raised. Either will do the job.  

You want something that will get the signal to noise ratio up into the useful range.  Just normalizing the signal you now get will result in both the signal and the noise being boosted.... not good.... you want to get the signal well above the noise.... a preamp or mixer should allow that to happen while keeping the noise well under control.   

When you look at future interfaces, check into the ones that offer pre-amps built in and one that has phantom power because, while a dynamic mic is really good for live stage, in the studio, most folks use condenser mics since they are more sensitive and when recording vocals and acoustic instruments, they excel at picking up the nuances in the voice and instrument tonal characteristics. 

Not familiar with the line6 ux1, but maybe there is no preamp built in? If it does have one, then DaveNY5 is right, make sure you're plugged into a "mic" or "Instrument" port, not Line.

I went round and round about this myself. I bought one of those inexpensive one channel preamps and it went right back in the box (too noisy) and onto the shelf.  Finally, I invested in a Focusrite Scarlett 2i2 sound card (less than $130) and it solved all my input problems. My Sure SM57 and my Tele plug straight into it with really strong, noiseless signals to X2.

Best,
Rob

Typically, when you have an xlr input on an interface, there is a mic preamp. His unit has a mic pre.   Depending on the software you are using, you may need to increase the volumes there.

Here are the specs on the Line 6 UX1

Inputs and outputs:
1-1/4" guitar input
1 balanced XLR input with high-quality mic preamp and trim knob
2-1/4" line inputs
1-1/4" stereo monitor input
2-1/4" analog outs
1-1/4" headphone out

A mic needs a mic pre-amp. A dynamic mic doesn't need phantom power like a condenser mic needs, but it still needs a pre-amp to power the mic, none the less..

Cj

You might need to fire up PodFarm in stand-alone mode (outside of Sonar) and then open up the mixer.  In there you can set the output levels including a +10 dB button (or maybe it's +18 dB).

I'll see if I can find some screenshots and add them to this response.

And welcome to the wonderful world of recording.  It has its challenges but it can be addictive and fun.... and aggravating, but then fun again.   ;-)


{edit} Oooops, I blew right past APC3's comments.  Do that.  (I'll post pictures in a minute.)


Okay, this is near and dear to my heart because I've done this too many times: "Why isn't my mic working?  Oh year, I forgot to change the input on the UX."

Click on "Mixer View"




Then click on Input Source and select Mic.  From there you should be able to set volume as needed.
You can also set if you want to record the dry output or processed through PodFarm.  Personally I prefer Dry so I can modify it later.  For both guitar and vocals.  Not sure if that's best practice but it works for me.