RDL ST-MA2 2W Mono Audio Amplifier w/Muting 8 Ohm

Description
Warranty Information

Overview

The ST-MA2 is a compact audio monitor amplifier with control inputs to mute or reduce the gain of its output. This module may be used in conjunction with other RDL® modules to configure automatic mixing systems or may be used alone as a single-speaker monitor amplifier. The ST-MA2 is typically used to drive a small tabletop or overhead monitor speaker in a conference room, boardroom, courtroom, public forum panel or similar installation. The ST-MA2 is ideally suited for use in automatic mixing systems due to its control inputs.

The line-level input may be wired balanced or unbalanced. The audio output will drive standard speakers from 4 to 45 Ω. Normal gain is preset by means of a trimmer on the module.

For tabletop installations, use the ST-MA2 with the WDG1 and RU-SP1.

Features:

Single-Speaker Monitor Amplifier
Conferencing Monitor Amp
Monitor Amp with Muting and Externally Actuated Attenuation Steps
Fast, Silent Audio Switching
Multiple Control Inputs
Adjustable Gain

Specifications

Input Impedance:

20 kΩ Balanced or Unbalanced Bridging

Input Level:

-10 dBV minimum for 2 Watts RMS output

Output Impedance:

8 Ω (will drive 4 Ω loads)

Output Power:

1.75 Watts RMS Continuous; 2 Watts RMS max.

THD+N:

< 0.5%

Bandwidth:

45 Hz to 14 kHz

CMRR:

> 60 dB (50 Hz to 120 Hz)

Residual Noise:

< -80 dB (below 2 Watts RMS)

Switching Time:

< 50 us

Attenuation (Muted):

> 90 dB (1 kHz),
> 85 dB (300 Hz to 3 kHz)
> 75 dB (20 Hz to 20 kHz)

Selectable Attenuation:

3 dB or 6 dB, each setting individually selectable using two independent inputs (connect to ground to activate, 0.3 mA)

Ambient Operating Environment:

0° C to 40° C

Power Requirement:

GROUND-REFERENCED, 24 Vdc @ 200 mA for rated output (220 mA @ 2 Watts RMS)

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.