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Review of NoHype LRM-2b Ribbon Mic

11K views 18 replies 7 participants last post by  adjustotone  
Thanks for the great review!

It's always interesting to hear about ribbons with extended high frequency response.

Also very interesting was the effect of input impedance on the high end.

If you made your frequency response measurement figure a vector pdf or a png with a transparent background, you could overlay it on the manufacturer's plot. I actually tried to make the background transparent, but wasn't successful in a few minutes of trying (using ImageMagick convert). I would be happy to overlay it if you repost one with a transparent background (vector pdf is best).

Another great ribbon for saxes (I have not tried it myself) is the Beyer M160. A bit pricier, though. The recordings of saxophones I have heard from it sound very natural, maybe with a slight "fuzzy" quality. It has an extended high frequency response, but the ribbon material may not last, according to reviews. There are people who rebuild them with better materials.

Also, some condensers I think have the quality you are looking for: Neumann TLM-102, TLM-103, TLM-170; MXL Genesis Tube; many others, especially more expensive. The Neumanns tend to sound smooth, but extended.

None of my suggestions fit this price range, unfortunately. However, the Octava MK-319 (typically $150 used) has this quality.

I believe the AT3035 has a smaller diaphragm and it may sound grittier than larger diaphragms. I used to have a pair, but they sounded "roomy", which is not an issue in your room. They do have a flat frequency response.

...and also the dynamic EV RE-20.
 
However, I've attached a transparent .png of the plot in case you're really interested.
Here is an overlay with the scales the same. I first made the scales the same, then shifted one plot vertically to normalize by eye (shifting a log scale is the same as normalizing a linear scale). Just wanted to see the differences in the high frequency response, which show the error bar is something like +/- 3dB there, based on the discrepancy with the manufacturer's plot. Could have made a cleaner plot with the svg, but this suffices for now...in the past when journals published vector postscript or pdf versions of plots, I was able to extract the actual data from the postscript itself...it would be interesting to know your measurement technique (for measuring frequency response).

Image
 
There is a very slight (<1 degree) rotation of the manufacturer's plot. So the minor ticks look different on the left vs. the right side. I tried to rotate it straight, but it was fussy, so at this level, here we are. Here is the plot without normalization (all I did was shift your plot back down so the major ticks nearly line up):

Image


I just noticed the x-axis ticks are off, and there is no way to make them line up by stretching either plot. This is very strange -- the manufacturer's plot does not have the correct log spacing in frequency, or the one you provided doesn't...

Interesting article. Maybe I'll read it to broaden my horizons...I've used plot digitizing tools also in the past -- involves some labor, but sometimes the only choice.