STM-2 RADIO DESIGN LABS, STM-2 Datasheet - Page 2

• Manufacturer Part Number: STM-2
• Description: RDL MICROPHONE PREAMPLIFIER, POWER REQUIREMENTS: 24-33 VDC, 25 MA, FEATURES: OUTPUT IS ADJUSTABLE FROM 35-65 DB GAIN. SEPARATE PHANTOM POWER SUPPLY, UP TO 48 VDC, UNIT MAY BE OPERATED WITH SUPPLY AS LOW AS 9 VDC, WITH REDUCED HEADROO
• Manufacturer: RADIO DESIGN LABS

STICK-ON
Model STM-2
Mic to Line Level Preamplifier
TYPICAL PERFORMANCE
Input Impedance:
Phantom Voltage and Buildout:
Output Impedance:
Output Levels:
Frequency Response:
Gain:
THD+N:
CMRR:
Headroom:
Power Requirement:
891-0015I
UNBALANCED
EACH OUTPUT MAY BE BALANCED OR UNBALANCED
MIC-LEVEL
SOURCE
SIGNAL
FROM
INPUT
ALTERNATE INPUTS
PHNTM
POWER
WIRING
®
MIC WHICH CAN USE UP
SERIES
OPTIONAL JUMPER
TO PROVIDE PHANTOM
VOLTAGE TO CONDENSER
TO 32 VOLTS PHANTOM
Europe [NH Amsterdam] (++31) 20-6238 983; Fax: (++31) 20-6225-287
NOTE THE STM-2 WILL OPERATE (WITH REDUCED HEADROOM) ON
SUPPLY VOLTAGES FROM 9 VDC TO 23 VDC.
SPEAKER
USED AS
MIC
U.S.A. [phone], [phone]; Fax: [phone]
INPUT
G
A
N
I
Radio Design Labs Technical Support Centers
150 to 600 Ω balanced; 5 kΩ unbalanced
24Vdc; IEC 1938: 1996-12, Internally filtered
150 Ω balanced to drive balanced or unbalanced lines of 150 Ω or higher
+4 dBu balanced
50 Hz to 25 kHz (+/- 1 dB)
Adjustable 0 to 65 dB
< 0.050%
> 60 dB (50 Hz to 30 kHz)
> 20 dB (24 Vdc supply); 14 dB (12 Vdc supply)
24 to 33 Vdc @ 25 mA, Ground-referenced
(9 to 23 Vdc with reduced headroom)
PHNTM
INPUT
IS COMMON
25 TURN
ADJUST
PROFESSIONAL ADJUSTABLE
MICROPHONE PREAMPLIFIER
TERMINAL
WIRING
PHNTM
GAIN
AUDIO
GROUND
THIS
A
OUTPUTS
B
G
A
N
I
SOURCE
BALANCED
MIC-LEVEL
POWER
24 VDC
SOURCE
SIGNAL
FROM
PWR
INPUT
Installation/Operation
W
P
O
E
R
PROFESSIONAL ADJUSTABLE
MICROPHONE PREAMPLIFIER
PHNTM
UNBALANCED
EN55103-1 E1-E5; EN55103-2 E1-E4
Typical Performance reflects product at publication time
exclusive of EMC data, if any, supplied with product.
Specifications are subject to change without notice.
EQUIPMENT
LINE-LEVEL
FEEDING
SIGNAL
A
OUTPUTS
B
EQUIPMENT
LINE-LEVEL
BALANCED
FEEDING
SIGNAL
PWR
O
W
P
E
R