Specifications

STAGE MONITOR & P.A. LOUDSPEAKER PLACEMENT

For maximum rejection of unwanted sound, place the stage moni- tor(s) or P.A. system loudspeaker at a 60° angle from the rear of the BETA 58A, not directly behind it. Always check out the stage setup before a performance to ensure that microphone and moni- tor placement is optimum.

MONITOR	°	P.A. SYSTEM
LOUDSPEAKER(S)	180	LOUDSPEAKER
		LOUDSPEAKER

120°120°

90°

0°

RECOMMENDED LOUDSPEAKER LOCATIONS

Type

Dynamic (moving coil)

Frequency Response

50 to 16,000 Hz

NOTE: The curve below shows on-axis response at a distance of 2 feet from a uniform sound source. Your response may vary, depend- ing on microphone position.

+20
	3 mm (1/8 in)
	25 mm (1 in)
	51 mm (2 in)
+10	606 mm (2 ft)

dB	0
	0
	–10
	-20		2	3	4 5 6 789	2	3	4 5 6 789
			2	3	4 5 6 789	2	3	4 5 6 789
	20	50	100		1000			10000	20000

TYPICAL FREQUENCY RESPONSE

Polar Pattern

Supercardioid, rotationally symmetrical about microphone axis, uniform with frequency

	180°		180°
150°	150°	150°	150°
120°	120°	120°	120°
90°	90°	90°	90°
	–20 dB		–20 dB
	–15 dB		–15 dB
60°	60°	60°	60°
	–10 dB		–10 dB
	–5 dB		–5 dB
30°	30°	30°	30°
	0		0
	250 Hz		2500 Hz
	500 Hz		6300 Hz
	1000 Hz		10000 Hz

TYPICAL POLAR PATTERNS

Output Level (at 1,000 Hz)

Open Circuit Voltage: -51.5 dBV/Pa* (2.6 mV)

*1 Pa = 94 dB SPL

Impedance

Rated impedance is 150 Ω (290 Ω actual) for connection to micro- phone inputs rated low Z

Phasing

Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3

BLUE

GREEN

RED

YELLOW

INTERNAL WIRING

Case

Silver blue enamel-painted die cast metal with hardened, matte- finished, spherical steel mesh grille

Adjustable, Stand Adapter

Slip-in microphone mounting, unbreakable, adjustable through 180° with standard 5/8"-27 thread, black finish

Dimensions

50 mm (2 in.)

160mm

(6.5 in.)

OVERALL DIMENSIONS

Net Weight

278 grams (9.92 oz)

Certification

Eligible to bear CE Marking. Conforms to European EMC Direc- tive 89/336/EEC. Meets applicable tests and performance crite- ria in European Standard EN55103 (1996) parts 1 and 2, for residential (E1) and light industrial (E2) environments.

FURNISHED ACCESSORIES

Adjustable Stand Adapter	A25D
5/8" to 3/8" (Euro) Thread Adapter	95A2050
Storage Bag	26A21

OPTIONAL ACCESSORIES

Windscreen	A58WS Series (8 colors available)
Isolation Mount	A55M, A55HM
7.6 m (25 ft.) Cable	C25E, C25F

REPLACEMENT PARTS

Cartridge	R176
Grille Assembly	RK265G
Plug (Connector) Assembly	90F1984