Thank you for correcting my error in generalization.
73
Bob, K4TAX
On 10/12/2019 11:37 PM, Jim Brown wrote:
On 10/12/2019 7:04 PM, Bob McGraw K4TAX wrote:
like most all dynamics, exhibit noticeable proximity effect.
Proximity effect is a characteristic of CARDIOID mics, specifically
single-D cardioid mics). It has NOTHING to do with whether the mic is
a dynamic or a capacitor (true condenser or electret). A cardioid mic
has a pattern similar to a 2-el Yagi, but in three dimensions.
Al Kahn, the founder of Ten Tec, also founded ElectroVoice with Lou
Burroughs in the '30s. When Lou wanted to retire, they sold the
company, and Al took his share to start Ten Tec, across the street
from EV's factory in Sevierville where they built microphones, among
other things.
One of those mics was the 666, also known in the broadcast world as
the "Buchannon Hammer," because Lou demonstrated its ruggedness by
using it to pound a nail and EV's management was in Buchannon, MI.
That mic was their first "Variable-D" mic. Single-D cardioids work by
interference of sound arriving at the front and a single rear port,
wavelength effects create the pronounced bass boost for very close
sound sources (the mouth, or a musical instrument) called proximity
effect. Variable-D mics overcame this limitation, with additional
rear openings providing very little bass boost. Current production
variable-D mics are the EV RE16, RE18, RE20, RE320, and RE-27N/D. I
don't know if Shure still makes theirs, the SM53 and SM54. AKG used to
make a D224. I still own a D224 and several RE16s and RE20s. All
variable-D mics are dynamics.
73, Jim K9YC
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|