CM82-BGM-II - Loudspeaker SoundTube - Free user manual and instructions
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| Product Type | Pendant loudspeaker for background/foreground music |
| Dimensions (H x Diameter) | 292 mm x 292 mm (11.5 in x 11.5 in) |
| Weight | 4.8 kg (10.5 lb) |
| Power Taps | 70V: 60W, 30W, 15W, 7.5W, 3.75W; 100V: 60W, 30W, 15W, 7.5W; 8 ohms (60W RMS, 120W program) |
| Frequency Response | 55 Hz - 20 kHz (±3 dB) |
| Sensitivity (1W/1m) | 89 dB |
| Maximum SPL | 108 dB (peak) |
| Drivers | 8 in (203 mm) polypropylene woofer, 1 in (25 mm) silk dome tweeter |
| Enclosure Material | ABS plastic with UV-resistant finish |
| Mounting | Pendant mount via included safety cable and suspension eyelet |
| Connector | 4-pin Phoenix-style removable terminal block |
| Color Options | Black or white (paintable) |
| Compliance | UL 1480, UL 2043 (plenum rated) |
| Weather Resistance | IP24 (indoor/outdoor covered) |
| Built-in Protection | Overload protection with auto-reset |
| Coverage Angle | 120° conical (wide dispersion) |
| Recommended Use | Background music systems, paging, foreground music |
| Maintenance | Wipe with damp cloth; do not use solvents or abrasive cleaners |
| Safety | Use safety cable attached to building structure; verify weight capacity |
| Reparability | Driver and transformer replaceable; contact SoundTube for parts |
Frequently Asked Questions - CM82-BGM-II SoundTube
What is the difference between 70V and 8 ohm operation on the CM82-BGM-II?
The CM82-BGM-II supports both 70V/100V distributed audio systems (using the transformer taps) and direct 8 ohm connection for low-impedance amplifiers. For 70V/100V, select the appropriate tap wattage; for 8 ohm, connect to the '8Ω' terminals and ensure amplifier power does not exceed 60W RMS.
Can the CM82-BGM-II be used outdoors?
Yes, it has an IP24 rating, meaning it is protected against splashing water and solid objects >12.5 mm. However, it should be installed under a covered area to avoid direct rain exposure.
How do I set the power tap for a 70V system?
Remove the cover, use a flathead screwdriver to rotate the rotary switch to the desired wattage (e.g., 30W). Ensure the amplifier is off during adjustment. For 100V systems, only use taps marked for 100V.
What is the maximum height for pendant mounting?
The included safety cable can support standard ceiling heights up to 4.5 m (15 ft). For higher ceilings, use additional safety cable or a separate suspension kit.
Can I paint the speaker to match my decor?
Yes, the enclosure is paintable. Use a high-quality latex or enamel paint. Do not paint the driver cone or grille cloth if present.
What tools are needed for installation?
You will need a screwdriver (Phillips and flathead), wire strippers, a ladder, and a safety cable attachment point. The speaker includes a mounting bracket and connectors.
How do I connect multiple CM82-BGM-II speakers in a 70V system?
Parallel all speakers to the same amplifier channel. Ensure the total tap wattage does not exceed the amplifier's rated power at 70V. Use a class 2 wiring and follow local electrical codes.
What is the recommended amplifier power for 8 ohm operation?
For one speaker, use an amplifier rated 60-120W RMS into 8 ohms. For multiple speakers in parallel, calculate total impedance and ensure amplifier can handle the load.
Does the speaker have a built-in crossover?
Yes, it has an internal passive crossover network that divides the frequency between the woofer and tweeter. No external crossover is needed.
What should I do if the speaker produces distorted sound?
Check the power tap setting matches the amplifier output, ensure the amplifier is not clipping, and verify all connections are secure. If distortion persists, test with a known good source or contact SoundTube support.
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USER MANUAL CM82-BGM-II SoundTube
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Product information
Brand : SoundTube
Model : CM82-BGM-II
Category : Loudspeaker