RDL STM-3 Microphone-Amplifier

Features:

Mit niedrigem Rauschpegel und hoher Verstärkung
Einstellbare Ausgangspegel
Hoch- oder niederohmige Eingangsimpedanz
Zwei symmetrische oder unsymmetrische Ausgänge
Anschluss für Phantomspeisung vorhanden


The STM-3 is a quality low-noise microphone preamplifier designed for use in surveillance, commercial sound, broadcast, and recording where higher than normal gain is required. The STM-3 is very flexible, with gain adjustment from 45 to 75 dB, two balanced or unbalanced outputs, and available phantom supply input. Its low-distortion and low-noise performance make it the best choice, even when larger preamps could be used. The STM 3 supply input is single ended and operates from 24 Vdc. Operation from 12 Vdc is possible with a 6 dB reduction in headroom. Each output drives high or low impedance loads.


Input: 500 Ω balanced; 5 kΩ unbalanced
Phantom: 24 Vdc; IEC 61938: 2013, Filtered
Output (2): +4 dBu 150 Ω balanced; -10 dBV unbalanced
Frequency Response: 50 Hz to 30 kHz (± 1.5 dB)
Gain: Adjustable 45 to 75 dB
THD+N: < 0.05% (50 dB gain)
CMRR: > 50 dB (50 Hz to 20 kHz)
Residual Noise: < -70 dB (below +4 dBu, 150 Ω source)
Headroom: > 20 dB (24 Vdc supply); 14 dB (12 Vdc supply)
Phantom Power Input: 24 Vdc @ 10 mA maximum
Ambient Operating Environment: 0° C to 55° C
Power Requirement: GROUND-REFERENCED, 24 Vdc @ 25 mA
Dimensions: Height: 0.7 in. (1.7 cm); Width: 3 in. (7.6 cm); Depth 1.6 in. (3.9 cm)
Package Type: Cardboard Box
Package Dimensions: 2 x 2 x 4 in.
Shipping Weight: 0.195 lbs.
WEEE weight: 0.145 lbs.