MCM Electronics

RDL Microphone PreamplifierMCM Part #: 555-STM-2  |  Radio Design Labs Part #: STM-2

No reviews yet!
Login to rate or review this product

Microphone Preamplifier

The STM-2 is a low-noise microphone preamp designed for use in commercial sound, broadcast, and recording. The STM-2 is very flexible, with gain adjustment from 35 to 65 dB, two balanced or unbalanced outputs, and available phantom supply input. Its ultra-low distortion and low-noise performance make it the best choice, even when larger preamps could be used.

Product Description

The STM-2 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.

    Features
  • Low-Noise Mic Preamp
  • Adjustable Output Level
  • High or Low Impedance Mic Inputs
  • Mic Input to 2 Line Outputs
  • Two Balanced or Unbalanced Outputs
  • Phantom Capability
  • RF-Filtered Inputs

Specifications
Input: 500 ohm balanced; 5 Kohm unbalanced
Phantom: 24 VDC; IEC 61938: 2013, Filtered
Outputs (2): +4 dBu 150 ohm balanced; -10 dBv unbalanced
Frequency Response: 50 Hz to 30 kHz (± 1.5 dB)
Gain: Adjustable 35 to 65 dB
THD+N: < 0.05% (50 dB Gain)
CMRR: >50 dB (50 Hz to 20 kHz)
Residual Noise: < -70 dB (below +4 dBu 150 ohm source @ 50 dB gain)
Headroom: > 20 dB (24 VDC supply);
> 14 dB (12 VDC supply)
Phantom Power Input: 24 to 33 VDC @ 10 mA maximum
Power Requirement: GROUND-REFERENCED, 24 to 33 VDC @ 25 mA
Ambient Operating Environment: 0° C to 55° C
Dimensions: Height: 0.7 in. (1.7 cm), Width: 3 in. (7.6 cm), Depth: 1.6 in. (3.9 cm)
Package Dimensions: 2" x 2" x 4"
Shipping Weight: 0.195 lbs.


Product Reviews

  • Rate It!
    Be the first to rate this product!

    Login Here to rate and review this product.

Associated Products

Image of RDL Power Supply - 500mA

555-PS-24A - RDL Power Supply - 500mA

Designed specifically for use with all RDL modules. All models are single ended, 24VDC output. Output current: 500mA

In Stock

$22.99

Buy Now
Image of RDL Power Supply - 1A

555-PS-24K - RDL Power Supply - 1A

Designed specifically for use with all RDL modules. All models are single ended, 24VDC output. Output current: 1A

In Stock

$28.99

Buy Now

Others Also Bought

Image of Creep-Zit™ Fiberglass Wire Running Kit

22-2665 - Creep-Zit™ Fiberglass Wire Running Kit

The Creep-Zit is "THE TOOL" that makes conventional fish tape obsolete and has a use in every wire/cable install job. residential or commerical. Consists of highly-flexible five 6' (30' total) highly-flexible, green fiberglass rods Kit includes fou...

In Stock

$84.99

Buy Now
Image of 7 Piece Metric Hex Set

22-2798 - 7 Piece Metric Hex Set

Precision tapered handles Exact fit hardened tool steel tips Seven piece metric hex set includes: .71, .89, 1.3, 1.5, 2.0, 2.5, 3.0mm

In Stock

$22.74

Buy Now
Image of Round Hole Cutter w/Adjustable Radius Blades

22-7385 - Round Hole Cutter w/Adjustable Radius Blades

Ideal for installing ceiling speakers, recessed lighting, or any project requiring a round hole to be cut.

In Stock

$64.99

Buy Now
Package Specifications & Dimensions
Weight:0.23 lbs.
Hazardous:No
Warranty:1095 days
Need to Return?
Length:4.25 in.
Width:2.25 in.
Height:2 in.
Shipping Information
Extra Shipping Charge:No
Drop Ship:No
Catalog Pages
Catalog/Page:

MCM Cat 57, Page 149

MCM Cat 56, Page 164

PDF Reference
Datasheet

Requires Adobe Acrobat Reader.

Mfr. Info

Radio Design Labs Logo
Mfr. Name:Radio Design Labs
Mfr. Part Number:STM-2
Save at least 15% on all Tenma Test Equipment through Sunday. Use promo code EMC396.
Save at least 15% on all Tenma Test Equipment through Sunday. Use promo code EMC396.