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SoundTube - IPD4-CM52-BGM - 5.25" In-Ceiling Speaker (Single)

SoundTube - IPD4-CM52-BGM - 5.25" In-Ceiling Speaker (Single)

The IP4-CM52-BGM is a 5.25-inch coaxial in-ceiling speaker for IP-addressable audio networks on the CobraNet platform which can provide economical system expansion through connection of up to three non-IP SoundTube CM52-BGM speakers directly to the IP4 unit. It incorporates a 5.25-inch polypropylene driver with butyl rubber surround and a 1-inch silk dome tweeter in a sealed drawn steel backcan with a tuned port.

The speaker delivers frequency response of 65 Hz – 22 kHz (-10 dB) with consistent, broad high frequency dispersion supplied through SoundTube’s proprietary BroadBeam Ring™ technology.Power, audio and control are delivered to the speaker via a CAT5 or CAT6 cable; connection on the other end is made to the STNet-Switch, which provides 40 watts PoE (Power over Ethernet) to each speaker.

The speaker may also be connected to standard PoE or PoE Plus switches, which will provide lower input power to the speaker cluster; input power to the IP4-CM52-BGM is shared among all speakers in the master-slave cluster. Audio connection to non-IP speakers in the cluster is made via a terminal strip on the IP4 speaker; two channels of audio are available at each IP4-CM52-BGM master unit and may be directed to the other speakers as needed.

Configuration and zoning of the IP4 master speaker is done via software. Should any problem occur with the speaker during operation, it will be reported immediately via SoundTube monitoring software. Mounting hardware for the IP4- CM52-BGM is included and features SoundTube’s SpeedWing™ constanttension fixed-wing mounting system, along with a 21-gauge steel tile bridge which ensures rapid and secure installation in any drywall or drop-tile application. The tile bridge is color-coded to match the speaker. An optional pre-construction bracket is also available.

Developed for economical audio coverage expansion in CobraNet audio platforms, the IP4-CM52-BGM is ideal for hotels, museums, houses of worship, education, retail stores, restaurants, airports or corporate installations. This speaker is based on SoundTube’s CM-BGM series, which was engineered for high efficiency, good musicality and added bass response, so it is suitable for both background music and paging.


  • IP-addressable, self powered (PoE) speaker with audio and power outputs for three standard CM52-BGM speakers
  • CobraNetTM I/O for interconnectivity with Cobranet-enabled audio systems
  • One 5.25 inch (134 mm) polypropylene woofer with rubber surround and one 0.75 inch (19 mm) silk dome tweeter
  • BroadBeam Ring™ technology for mid-range clarity and ultra wide off axis performance
  • Fast connection of power, audio and control functions via one CAT5 or CAT6 cable
  • 40 watts PoE provided by SoundTube STNet-Switch; also works with Standard PoE plus and PoE switches
  • Input power is shared among speakers connected to IP4 unit
  • Two output channels available to additional speakers
  • Provides report-back on any problems via SoundTube software
  • Tuned port on baffle for added musicality and bass response down to 56 Hz (-10 dB)
  • Incorporates a painted steel grille for lasting durability
  • SpeedWingTM clamping system is adaptable to material thicknesses ranging from 0.035 in. (0.9 mm) to 2.5 in. (63.5 mm)
  • UL 60065 and 2043 listed
  • High-quality white painted finish
  • Included accessories: Color-coded (green) tile bridge, UL listed conduit clamp, paint shield


System Type 5.25 inch coaxial, in-ceiling, ported, CobranetTM-enabled, network
Frequency Response (- 3 dB) 67 Hz - 20 kHz
Frequency Response (-10 dB) 56 Hz - 22 kHz
Max. Power SPL @ 1 m 93.0 dB
Coverage Angle (-6 dB @ 2 kHz) 180º
Coverage Angle (-6 dB @ 10 kHz) 112º
Coverage Angle (averaged 2-10 kHz) 141º
Directivity Factor (Q) 3.8 (averaged 100 Hz - 10 kHz) ; 2.1 (2 kHz)
Directivity Index (DI) 5.1 dB (averaged 100 Hz - 10 kHz) ; 3.3 dB (2 kHz)
Transducer - Low-Frequency Driver 134 mm (5.25 in.) Polypropylene cone, rubber surround
Transducer - High-Frequency Driver 19 mm (0.75 in.) Silk dome tweeter
Low-Frequency Voice Coil 25.4 mm (1.0 in.)
Crossover Frequency 5.0 kHz
Network Type: Low Pass 12 dB per octave, 2nd order
Network Type: High Pass 12 dB per octave, 2nd order
Enclosure Material Drawn steel backcan with ABS baffle
Grille Painted steel
Inputs RJ45 ethernet port
Colors White
Backcan Diameter 245.6 mm (9.67 in.)
Backcan Height 146.1 mm (5.75 in.)
Visible Diameter 298.5 mm (11.75 in.)
Visible Height 8.6 mm (0.34 in.)
Mounting Hole Diameter 266.7 mm (10.5 in.)
Min - Max Ceiling Thickness 0.9 mm (0.035 in.) - 63.5 mm (2.5 in.)
Weight 3.6 kg (8.0 lbs.)
Shipping Weight 4.1 kg (9.0 lbs.)
Packaging One per box
Included accessories Tile bridge, UL-listed flex conduit clamp, paint shield, hole template, wire nuts
Optional accessories Pre-construction bracket (AC-CM6/8-PCB)
Regulatory - UL UL 60065 & UL 2043 listed
Regulatory - CE Approved
RoHS Approved
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