Gearslutz.com - View Single Post - Neumann U47 in comparison to the Neumann U67 microphone

Fletcher · 31st August 2003

I'm not Chris... but perhaps I can be of assistance here...

Many U-47 power supplies have electrolytic filter caps that are older than Cuban Missle Crisis... electrolytics have a tendency to dry up over the years and lose their abilities to properly filter the AC voltages to ground causing AC ripple on the power rails to the amplifier and capsule polarization rails... this will cause less than optimal response from your microhone... at best, it adds noise, at worst it'll **** up the amplifier... now it ain't rocket science to change the capacitors... but it might be something worth considering when looking at a mic that's older than you are.

With that said... I have found the Soundelux E-47 to be as good as some of the best 47's/48's I've used... and far superior to about 80-85% of the "vintage" 47's and 48's I've encountered in the last few years... obviously they don't have the "vintage" cache... but if you're talking about audio vs. "selling time"... IMNTLBFHO, they're an excellent tool for purposes where a "vintage tube U-47" could come in handy.

As always... YMMV

31st August 2003	#6
Fletcher member no 666 Joined: Jun 2002 Location: Durham, NC Posts: 10,108	I'm not Chris... but perhaps I can be of assistance here... Many U-47 power supplies have electrolytic filter caps that are older than Cuban Missle Crisis... electrolytics have a tendency to dry up over the years and lose their abilities to properly filter the AC voltages to ground causing AC ripple on the power rails to the amplifier and capsule polarization rails... this will cause less than optimal response from your microhone... at best, it adds noise, at worst it'll ** up the amplifier... now it ain't rocket science to change the capacitors... but it might be something worth considering when looking at a mic that's older than you are. With that said... I have found the Soundelux E-47 to be as good as some of the best 47's/48's I've used... and far superior to about 80-85% of the "vintage" 47's and 48's I've encountered in the last few years... obviously they don't have the "vintage" cache... but if you're talking about audio vs. "selling time"... IMNTLBFHO, they're an excellent tool for purposes where a "vintage tube U-47" could come in handy. As always... YMMV __________________ CN Fletcher Professional Affiliations: R/E/P Professional Recording Engineer and Producer forums - serious hobbyists welcome SoundPure.com mwagener wrote on Sat, 11 September 2004 14:33 We are selling emotions, there are no emotions in a grid Roscoe Ambel once said**: Pro-Tools is to audio what fluorescent is to light