Friday, June 23, 2006
Grampian Ribbon Microphone - With Crumblies
The Grampian Ribbon is similar in construction to a Reslo, and has the ribbon frame which can be positioned, a bit, within the confines of the magnet assembly. This is a fairly conventional setup with two horseshoe magnets and tapered pole pieces defining the magnetic gap.
The Grampian looks larger in photographs, and has a sculptural aspect, but is rather smaller than one would expect and therefore not very impressive when seen "in person". The transformer (not shown) is an EI type with a low Z output. The cast potmetal base and frame are well executed and nicely finished, and the recessed blue metallic label has a simple but good look to it.
This picture was shot right after we opened this ebay purchase up. The crumbly bits are a reminder of what happens to most polymers over a long time, which is why we avoid them in our mics. Only certain polymers have the stability needed for a planned 50 year service life, which we learned making medical devices and doing accelerated aging studies. That's why we can predict such long service lives for the Crowley and Tripp mics.
I love the name. Grampian. So English, stodgy, appropriate.
Posted by Bob Crowley at 4:02 PM