CM-EZ-II - Loudspeaker SoundTube - Free user manual and instructions
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| Type of product | In-ceiling loudspeaker |
| Woofer | 5.25-inch polypropylene cone with rubber surround |
| Tweeter | 0.75-inch silk dome tweeter |
| Impedance | 8 ohms bypass / 70V / 100V transformer taps |
| Power handling | 30W RMS, 60W peak |
| Frequency response | 70 Hz – 20 kHz |
| Sensitivity | 88 dB (1W/1m) |
| Transformer taps | 1.5W, 3W, 6W, 12W, 25W, and 8Ω bypass |
| Dimensions (diameter) | 196 mm (7.72 in) outer; 168 mm (6.61 in) cutout |
| Depth behind ceiling | 89 mm (3.50 in) |
| Weight | 1.5 kg (3.3 lbs) |
| Construction | UL94-V0 ABS baffle, steel back can |
| Grille | Perforated steel, powder-coated, paintable |
| Installation | Quick-install dog ears, paint shield included |
| Input connection | Spring-loaded terminal, 22 AWG to 14 AWG |
| Safety ratings | UL 1480, UL 2043 plenum rated |
| Compliance | RoHS compliant |
| Suitable for | 70V/100V distributed audio systems |
| Accessories included | Paint shield, mounting template |
| Maintenance | Wipe with dry cloth; do not use solvents |
Frequently Asked Questions - CM-EZ-II SoundTube
How do I select the correct transformer tap on the CM-EZ-II?
The CM-EZ-II has a rotary switch on the front baffle that allows you to choose between 1.5W, 3W, 6W, 12W, 25W, and the 8Ω bypass position. For 70V or 100V systems, set the switch to the wattage that best matches your system design. For low-impedance amplifiers, choose the 8Ω bypass mode.
What is the required ceiling cutout size?
The recommended ceiling cutout is 168 mm (6.6 inches) in diameter. Always verify with the included mounting template before cutting to ensure a proper fit.
Can I paint the speaker grille?
Yes, the grille is paintable. Remove the grille, apply a thin coat of water-based paint, and let it dry completely before reinstalling. The included paint shield protects the driver from overspray during installation.
What is the difference between 70V and 8Ω operation?
In 70V (or 100V) distributed systems, the speaker uses a step-down transformer and multiple speakers are connected in parallel to a constant-voltage line. In 8Ω operation, the transformer is bypassed and the speaker connects directly to a low-impedance amplifier output.
How do I wire the CM-EZ-II?
Connect the positive and negative speaker wires to the spring-loaded terminals on the baffle. For 70V/100V systems, ensure the wire is properly rated for the voltage and total power. Use the tap switch to set the desired wattage before closing the ceiling.
What is the optimal spacing between ceiling speakers?
For even coverage, place speakers approximately 2.5 to 3.5 meters (8 to 12 feet) apart, depending on ceiling height and room acoustics. For high-ceiling areas, reduce spacing to avoid dead zones. Use the 70V tap to adjust volume per zone.
Can the CM-EZ-II be used in bathrooms or outdoor areas?
The CM-EZ-II is rated for UL 2043 plenum spaces but is not IP-rated for moisture or outdoor exposure. For damp areas, use a weather-resistant model. Avoid installing it where it may be exposed to direct rain or high humidity.
How do I remove the grille for cleaning or painting?
Gently pry the grille from the edges using a small flat-head screwdriver or the supplied removal tool. Be careful not to damage the surrounding frame. The grille is held by magnetic or clip attachments. After cleaning, press it firmly back into place.
What is the recommended amplifier power for a pair of speakers?
For a pair of CM-EZ-II speakers in 8Ω mode, use a stereo amplifier rated at 30W to 60W per channel. If using 70V mode, calculate the total tap wattage and ensure the amplifier's power rating matches the total load.
Where can I find the user manual or technical specifications?
The complete user manual and specifications are available for free download on notice-facile.com. You can also contact SoundTube support for detailed drawings, wiring diagrams, and installation guidelines.
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USER MANUAL CM-EZ-II SoundTube
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Product information
Brand : SoundTube
Model : CM-EZ-II
Category : Loudspeaker