RDL STM-2X Switched Microphone Preamplifier - 35 to 60dB Gain

Description
Warranty Information

Overview

The STM-2X is the ideal choice in many installations where a microphone preamplifier is required, and is the ideal choice where either a toggle-type switch or push-to-talk switch is to be provided for microphone control, particularly if condenser microphones are used.

Features:

Quiet Switching of Condenser Microphone
Remote Microphone Soft-Switching
Switch a Mic-Level Source to a Mic or Line Level Output
Remote Toggle Switch or Push-to-Talk Button
Adjustable Preset Gain on Microphone Source

Specifications

Input:

500 Ω balanced; 5 kΩ unbalanced

Phantom:

24 Vdc; IEC 61938: 2013, Filtered

Outputs (2):

Line Level: +4 dBu 150Ω balanced
Mic Level: -45 dBu 150Ω balanced

Headroom:

> 20 dB

Gain:

Line: Adjustable 35 to 65 dB; Mic Level Output: Adjustable -15 to 15 dB

Frequency Response:

50 Hz to 30 kHz (± 1.5 dB)

THD+N:

< 0.05% (50 dB gain)

Residual Noise ON:

< -70 dB (below to +4 dBu; 150 Ω source @ 50 dB gain)

OFF Attenuation:

> 100 dB (1 kHz)
> 80 dB (50 Hz to 20 kHz)

Switch Control Input:

Connect to ground to activate signal; 0.5 mA maximum current required

Switching Time:

< 5 ms (soft-switching transition on or off)

CMRR:

>50 dB (50 Hz to 20 kHz)

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.

Tariff code:

8543.70.9960

RDL Three-Year Limited Warranty Installation of these products by the Purchaser shall constitute Purchaser’s acknowledgement and acceptance of the terms and conditions for sale and of this warranty, and shall constitute the Purchaser’s determination of the suitability of this product for the Purchaser’s intended application. Radio Design Labs, Inc., also referred to as RDL®, warrants to the Purchaser that products manufactured by RDL are free from defects in material and workmanship. This warranty applies to the period of three years from the date of shipment, except for component parts or products purchased from other sources and supplied by RDL. Such component parts or products bear only the warranty of the manufacturer thereof in effect at the time of shipment to the Purchaser. RDL will, without charge, and after written notice has been received and acknowledged by RDL, repair an RDL product if proved to be defective according to the usage of the trade, when such equipment is received by RDL at the location it designates with shipment costs prepaid by the Purchaser. RDL shall not be liable for any expense whether for repairs, replacements, material, service, or otherwise, incurred by the Purchaser or modifications made by the Purchaser to the product. No equipment shall be deemed defective if it shall fail to operate in a normal or proper manner due to exposure to excessive moisture in the atmosphere, excessive temperature extremes, improper environmental cleanliness, or any other environment not consistent with the principles of good engineering practice. In no event shall RDL have any liability for consequential damage or expense directly or indirectly arising from the use of the products, or any inability to use it either separately or in combination with other equipment or materials, or from any other cause, whether used in accordance with instructions or not. This warranty is void if equipment is altered in any way by other than RDL. RDL products are NOT intended for use in life support appliances, devices, or systems. Use of RDL products in such applications is done solely at the liability of the reseller/installer and/or end user. RDL reserves the right to change design parameters and specifications at any time without notice. The performance measurements reflect the products at the time of printing. This warranty is in lieu of all others, either expressed or implied. No representative is authorized to assume for RDL any other liability in connection with RDL products.