Taperssection.com
Gear / Technical Help => Microphones & Setup => Topic started by: Roving Sign on November 12, 2007, 11:16:36 AM
-
I have this sale going on ebay:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=270185289764
I put in the Dynamic category and called it so in my listing...
Question from a buyer:
Q: There is an error in this listing... had you taken a look at the spec sheet you reference, it would have shown you this is NOT a dynamic mic... it's CONTROLLED MAGNETIC...
Specs do indeed say: "controlled magnetic"
http://www.shure.com/stellent/groups/public/@GMS_GMI_WEB_UG/documents/web_resource/us_pro_425_ug_27a116%28oa%29.pdf
I would be under the assumption that controlled magnetic, crystal, and ribbon (for example) would all be under the heading "dynamic"???
Or is dynamic really its own thing - limited to the SM57 type of mic???
Paging DSatz!!!!!!!!!!!!!!!!!!!!!
-
Roving Sign, the term "dynamic" is a misnomer in the first place, since all microphones have at least one moving part and are therefore "dynamic" in that sense. Even if a microphone didn't have any internal moving parts, you could pick it up and throw it across the room, which would make it "dynamic" in yet another sense.
But seriously, the term is generally applied to any microphone in which the electricity is generated via magnetism. Usually this takes the form of a moving coil or an aluminum ribbon suspended within the field of a permanent magnet--a miniature loudspeaker in reverse. As the diaphragm or ribbon is moved by sound waves (or perhaps by some idiot blowing into the mike to see whether it's on--it's amazing how many people seem to think that that's an insider's trick, a very smart thing to do), the coil or ribbon cuts across the magnetic lines of force, and current is induced in said coil or ribbon.
So of the types you mentioned, moving coil and ribbon microphones are considered "dynamic." Crystal microphones aren't, though, since they're based on the piezoelectric effect--the crystal itself generates a tiny current when flexed by sound energy (or perhaps by a sadist with pliers).
--best regards
-
thanks DSatz...what does "controlled magnetic" mean anyway? I couldn't find any info or definition.
the term "dynamic" is a misnomer in the first place, since all microphones have at least one moving part
ahh...ok - so by my theory even condensers could be "dynamic..."
But seriously, the term is generally applied to any microphone in which the electricity is generated via magnetism.
So - am I ok refering to this "controlled magnetic" mic as "dynamic?" Sounds like it...kinda
thanks for the info...
They guy was kind of a smart ass about it...so - I wanted to hear a more authoritative take on this...
My feeling is - the harmonica guys that want these things know what they are...so I dont feel I've mislead anyone - even though I should have been more specific. But - I only linked to that spec sheet for reference...I didnt actually look at it too much. Why would I? - the mic worked...it didnt need phantom...so I called it "dynamic."
-
When I see people take up a company's marketing slogan as if it were some kind of moral cause, I truly feel sorry for what seems to be a void in their lives. Any proper subclass is a subtype of its superclass; chocolate mik is a kind of milk and French toast is a kind of toast. I humbly submit that a "controlled magnetic" microphone is a kind of magnetic microphone, and is therefore dynamic.
Actually I'm not sure what they even mean by "controlled" in this context--back when this microphone was designed, was there some problem with the magnetism spilling out of other microphones and running around the room biting people or something?
--best regards