Key Features:
• Omnidirectional Pattern
• 80-10,000 Hz Frequency Response
• 9.1m (30 ft) Cable
• Neck Cord and Belt Clip Included
General Description:
The Electro-Voice®Model 649B miniature lavalier microphone is
one of the smallest, lightest-weight, wide-range, dynamic
microphones manufactured today. Originally created for TV
applications, this miniature microphone can be used hand-held,
mounted on a stand, or hung on the neck cord, leaving the hands
of an announcer or performer free. It is excellent for audience
participation, man-in-the street interviews, panel shows -
wherever microphone concealment, individual mobility, or free
movement of the hands is desired. No closely associated auxiliary
equipment is required.
The Model 649B features the exclusive Electro-Voice
Acoustalloy®diaphragm. This nonmetallic diaphragm withstands
high humidity, temperature extremes, corrosive effects of salt
air, and severe mechanical shocks. It is practically indestructible
with normal use.
The 649B is equipped with two specially designed accessories
intended to increase the usefulness and mounting convenience
of the microphone: lavalier cord assembly and a belt clip. The
lavalier cord assembly is supplied attached to the microphone,
ready for use. Note that the flexible plastic cord adapter may be
removed from the microphone, if desired, by firmly pulling it over
the front of the microphone. Alternately, it may be pushed free of
the microphone and allowed to slide down the cable, the neck
cord being retained separately for future use. In this case, the
cord adapter will be retained permanently and cannot be lost
since it cannot escape from either end of the cable. (In the event
the cord is misplaced, an ordinary shoestring may be employed
after simply tying a knot in each end.) The belt clip, when used in
conjunction with the lavalier cord assembly, provides effective
control of cable placement and prevents unwanted mechanical
noise from being transmitted up the cable to the microphone.
After inserting the cable in the clip as shown in Figure 1, simply
attach it to the belt at one side. It may also be clipped over the
edge of a pocket. A protective pouch is also provided to shield
the microphone from filings, airborne magnetic particles, and
dust when not in use.
Technical Specifications:
:epyTcimanyD
:esnopseRycneuqerFzH000,01otzH08
:ecnadepmI)smho051(z-oL
tiucriCnepO,ytivitisneS :zHk1,egatloV lacsaP/Vm63.0
:nrettaPraloPlanoitceridinmO
:mgarhpaiDyollatsuocA
:tiucriCcitengaMVocinlA
:esaCmunimulAdenruT-ehtaL,elisneT-hgiH
:hsiniFkcalB"aremaC"ssolgimeS
:snoisnemiD).ni57.0(mm91=retemaiD ).ni52.2(mm2.75=htgneL
:thgieWteNkceNdnaelbaCsseL).zo1.1(g13 ylbmessAdroC
:seirosseccAylbmessAdroCkceN pilCtleB hcuoPevitcetorP
Model 649B
MiniatureLavalier
Dynamic Microphone
Architects’ and Engineers’
Specifications
Themicrophoneshallbe theElectro-VoiceModel649B or equivalent.
The microphone shall be an omnidirectional, dynamic type with
nonmetallic Acoustalloy®diaphragm. The microphone shall have a
magnetic shield to prevent dust and magnetic particles from reaching
the diaphragm. A response from 80 to 10,000 Hz shall be obtained.
Line shall be balanced to ground and phased.
The sensitivity shall be 0.36 mV/Pascal. The magnetic circuit shall
be a nonwelded circuit and employ Alnico V magnetic iron.
The case shall be made of high-tensile, lathe-turned aluminum. The
microphone shall have a diameter of 19 mm (0.75 in.), a length of
57.2 mm (2.25 in.), and a net weight of 31 grams (1.1 oz), without
cable or neck cord assembly. Finish of the microphone shall be
semigloss black. A 9.1 m (30 ft), two-conductor, shielded, black
synthetic rubber-jacketed cable shall be provided. The microphone
shall be supplied with a neck cord assembly, belt clip and protective
pouch.
