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Black rectangular speaker cabinet with front grille

NEC Display Solutions

NEC Display Solutions SP-RM3A 35 W RMS Black Home Audio Speaker

SKU CH-BBXD-1A3TQ

Active speaker system delivers 35 W RMS output for compatible NEC displays

  • Premium full-range active speaker for clear sound
  • 35 W RMS output delivers strong audio performance
  • Compatible with M431, M491, M551, M651 display models
  • Works with MA431, MA491, MA551, ME431 series displays
  • New condition ensures reliable out-of-box operation

Compatible NEC Displays

The SP-RM3A is an active speaker module designed for NEC M431, M491, M551, M651, MA431, MA491, MA551 and ME431 large-format displays. It adds integrated audio to signage or meeting-room screens that lack built-in speakers. Installers can mount the unit directly to the display for a tidy, single-cable setup.

Build and Mounting

The speaker draws power and signal from the display itself, so no separate mains lead or external amplifier is required. Its black cabinet matches the bezel aesthetics of the compatible NEC models. Mounting hardware aligns with the display’s rear pattern, keeping the profile shallow for wall-mounted or stand-mounted installations.

Output and Operation

Rated at 35 W RMS, the full-range driver delivers clear speech and background music levels for digital-signage and conference-room use. As an active module, it runs from the display’s internal supply, adding minimal heat and no audible fan noise. First listed by the manufacturer in 2025, it is a current-generation accessory for the listed display series.

How it compares

Measured against everything we stock in Home Speakers & Subwoofers, at today’s prices. Recalculated every night.

Price $395.99
Pricier than about 82% of the 1,147 comparable items (median $133.99).

Specifications

Product
Brand nameNEC

Questions about this item

Does the 35 W RMS rating limit the maximum volume I can get from the SP-RM3A?

The 35 W RMS figure shows the continuous power the speaker can handle; peak output will be higher but sustained levels stay within that rating.

Which NEC display models include the mounting points that match the SP-RM3A speaker?

The speaker is designed for the M431, M491, M551, M651, MA431, MA491, MA551 and ME431 display series.

How do I connect the SP-RM3A to a compatible NEC display, and what step is often missed?

Attach the speaker to the display's dedicated mounting brackets and plug the audio cable into the display's speaker output; the step often missed is securing both mounting screws before connecting the cable.

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