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RCF ST 12-SMA Active Stage Monitor Speaker with 12" Woofer

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Item#: ST12-SMA
UPC: 8024530012816
Usually ships in 1-3 days from RCF
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Free Shipping on most orders with minimum purchase of $50 or more for a limited time. Ground shipments only in the lower 48 contiguous United States. Excludes oversized or overweight items such as oversized speakers, oversized cases, trussing & staging. Other exclusions include some fluids, some parts & special orders. Any questions, please call 1-800-355-7746 during normal business hours. Offer subject to change or termination without notice. Not responsible for typographical errors.



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About This Product

RCF ST 12-SMA 12" Active Stage Monitor Speaker

ST Series is a practical solution for high intelligibility speech and audio applications, covering infill or delay, production studios, presentations and high power music sound reinforcement with or without subwoofers. A key requirement for everyday audio systems, delivering simple ‘plug and play’ solutions, without compromising performance and portability.

Legendary RCF transducer technology coupled with state of the art digital amplification topology resulting in a perfectly optimised loudspeaker series. The ST Series provides high end audio coverage even at extreme sound pressure levels, unmatched reliability and acoustic compatibility across the whole series.

Ultra Compact, Multi-Purpose Stage Monitor

ST 12-SMA is a multi-purpose active loudspeaker, designed to be the everyday monitoring tool for rental companies and professional musicians. With its ultra compact design together with high output levels, ST 12-SMA is the answer to a wide variety of production requirements. It is particularly effective for small bands and personal use.

RCF ST 12-SMA Features:

  • 800 Watt Peak, 400 Wat RMS.
  • 129 dB max SPL.
  • 45 Hz - 20 kHz frequency response.
  • 12" Woofer, 2.5" voice coil.
  • 1" Driver, 1.4" voice coil.



  • Main vocal stage monitor.
  • High-output drum or keyboard monitor.
  • Sidefill monitor for small- to medium-scale applications.
  • Rental companies.
  • Professional musicians.
RCF ST 12-SMA Specifications

Acoustical Specifications
Frequency Response -3 dB: 45 Hz ÷ 20 Hz
Max SPL: 129 dB
Horizontal coverage angle: 90°
Vertical coverage angle: 60°
Compression Driver: 1", 1.4" voice coil
Woofer: 12", 2.5" voice coil

Input/Output Section
Input signal: bal/unbal
Input connectors: Jack-XLR male
Output connectors: XLR female

Processor Section
Crossover frequencies: 1400 Hz
Protections: RMS limiter, HF
Limiter: Fast limiter

Amplifier Specifications
Total power: 800 W PEAK
High frequencies: 200 W PEAK
Low frequencies: 600 W PEAK
Total power: 400 W RMS
High frequencies: 100 W RMS
Low frequencies: 300 W RMS

Cabinet Material: Baltic birch
Handles: 1 side
Pole Mount/Cap: Yes
Colour: Black

Physical Specifications
Height: 318/12.51 mm/inch
Width: 594/23.38 mm/inch
Depth: 400/15.74 mm/inch
Net Weight: 18/39.68 kg/lbs

The ST12-SMA Box Includes:

(1) RCF ST 12-SMA 12" Active Stage Monitor Speaker
(1) IEC power cord
(1) User manual