– 2 –
Impedance
Microphone rating impedance is 150
Ω
(250
Ω
actual) for
connection to microphone inputs rated at 75 to 300
Ω
Phasing
Positive pressure on diaphragm produces positive voltage
on BLACK cable lead (see Figure 3).
CARTRIDGE
INTERNAL CONNECTIONS
FIGURE 3
Sensitivity (at 1,000 Hz)
Open Circuit Voltage: – 57.5 dBV/Pa* (1.3 mV)
*(1 Pa = 94 dB SPL)
Cartridge Shock Mount
Internal rubber vibration isolator
CABLE
6.1 m (20 ft) two-conductor shielded, attached, small diam-
eter cable
Case
Silver finish aluminum and ARMO-DUR
R
with stainless
steel screen
Dimensions
See Figure 4
OVERALL DIMENSIONS
Figure 4
Net Weight
354 grams (12–1/2 oz)
GOOSENECK MOUNTING
To mount the 545L on a gooseneck or fixed pipe with a
5/8”–27 thread, unscrew (turn counterclockwise) the end cap
at the cable end of the microphone, and remove the end cap
and strain relief by sliding them down the length of the cable.
Fish the cable through the gooseneck or pipe and firmly
thread the microphone to the mount.
OPTIONAL ACCESSORIES
Swivel Adapter.
A25B
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Line Matching Transformer
A95 Series
. . . . . . . . . . . . .
Gooseneck (12 in., 18 in.)
G12, G18
. . . . . . . . . . . . . . .
Windscreen
A2WS-GRA
. . . . . . . . . . . . . . . . . . . . . . . . .
REPLACEMENT PART
Cartridge
R45L
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SHURE Incorporated Web Address: http://www.shure.com
5800 W. Touhy Avenue, Niles, IL 60714-4608, U.S.A.
Phone: 800-257-4873 Fax: 847-600-1212
In Europe, Phone: 49-7131-72140 Fax: 49-7131-721414
In Asia, Phone: 852-2893-4290 Fax: 852-2893-4055
Elsewhere, Phone: 847-600-2000 Fax: 847-600-6336
