Hi Mike.

The mic you are using has had some bad reviews and would not be my first choice for the money BUT that said it should not produce the noises you are referring to.

Consider the leads.....Most tubes require special leads....check it is the correct type of shielded 7 pin lead you are using and that the connections joints solders etc are OK. Amazing how I have solved probs in the past just by changing leads. Dodgy leads are sometimes the cause of many head scratching probs relating to mics.

FYI All tubes and condensers require phantom power. I doubt one would give a signal without it. Some tube mics have their own transformers and special cables.

Amazing how much any mic improves with a good clean. Just make sure you are careful and follow instructions.
Old mics become cruddy and require cleaning...check out the links for further info.
http://mixonline.com/gear/tips/techs-files-mysteries-old-tube-mics/

http://archive.ampage.org/threads/4/misc/228343/Cleaning_a_Condenser_Microphone-1.html

I would not use such a mic through a tube preamp such as presonus or ART. imo it is a bit like recording with FX rather than dry. These things should be added post record.

Tubes tend to send out stronger signals than other mics so watch levels.....They also tend to pick up more outside noises such as fans and hums from speakers etc so watch placement.

Sometimes a tube upgrade will improve things.... check the capsule for scratches dirt etc.

One last point..... tubes require warming up prior to recording they will play up causing pops and sometimes sound funny without it....it depends on temp and humidity as to how long a warm up is needed but several mins minimum.


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