Happy New Year!
Quick question... I've been modding a used Apex 460, nothing crazy, just the Brian Fox mod and I'm pretty happy with the way it sounds, even with the stock capsule. I noticed however, that the noise floor is significantly lower when its in full Fig-8 than when it is in straight up Cardioid, or even in any of the detents in between cardioid and fig 8. In cardioid it's much noisier than my FET mics, which is to be expected I suppose, but in Fig-8, it's the same noise level. The tube is a fairly new EH6072, I've been burning it in for just over a week. Is this usual or unusual? Also, is this an indication that possibly the backside of the capsule is better, or in better condition, than the front side and maybe I should reverse the capsule? I really like how it sounds in fig-8, so whatever is going on, it's working for me, but I thought I'd ask in case reversing the capsule could further improve the sound. Thanks in advance!
How much difference is there between the fig-8 noise and the other positions?What about noise in omni?Is that with the mic in a soundproof box or just in the room?
It's about 6db more noise in cardioid, measured in the VO booth I use for work every day. I did take a listen in omni and can't recall at the moment if it was noisier or the same. Dave Thomas at Advanced Audio mentioned on RGO that he felt it was the stock capsule that was the culprit so I have the capsule out of it at the moment but I'll try to pop it in there at some point soon and check it again. I've tried 3 different tubes with pretty much the same results so I'm inclined to try a different capsule next.
Have you tried replacing the capsules with two capacitors of similar value (I would think 60-80pF)? Then you would have only the electronic noise.