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Description
SoundTube CM31-EZ-WH In Ceiling Speaker (White) - 3"The CM31 EZ is a premium full range 3" in ceiling speaker for applications requiring 8 ? or distributed audio solutions. The CM31 EZ incorporates low profile grille with a total visible footprint of 6. 3" diameter and an integrated backcan and driver design for ultra compact in ceiling installations. The in ceiling speaker includes a six position tap switch with a transformer bypass position. A tile bridge and mounting hardware are included and
The CM31-EZ is a premium full-range 3" in-ceiling speaker for applications requiring 8 ? or distributed audio solutions. The CM31-EZ incorporates low profile grille with a total visible footprint of 6.3" diameter and an integrated backcan and driver design for ultra compact in-ceiling installations. The in-ceiling speaker includes a six-position tap switch with a transformer bypass position. A tile bridge and mounting hardware are included and feature a fast and secure constant tension SpeedWingª mounting system. The CM31-EZ incorporates weatherized components for indoor and outdoor applications.
Features
- One 3" (76.2 mm) full-range high-extrusion, highf idelity polypropylene driver with butyl rubber surround
- Weatherized components for indoor/outdoor applications
- Shallow 3.5" (88.9 mm) deep all-steel backcan with integrated driver and baffle configuration
- Ultra-compact design with a total visible footprint of less than 6.3" (160.6 mm) diameter
- Rapid installation, blind-mount, fixed-wing mounting mechanism with constant tension design affixing to wall thicknesses ranging from 0.1" (2.5 mm) to 1.5" (38.1 mm)
- Corrosion-resistant, powder-coated aluminum grille with snap fit attachment
- UL1480A and 2043 approved
- High-quality black or white paint finish
- Included accessories: tile bridge, conduit connector, paint mask, and wire nuts
- Optional accessories: pre-construction bracket (AC-CM3-PCB)
Specifications
| Color | White |
| UPC | 752830439986 |
| Manufacturer | SoundTube |
| Manufacturer's Category | CM-EZ Economical In-Ceiling |
| Shipping Weight | 3.7 lbs / 1.68 kg |
| Carton Height | 8.25 in / 209.55 mm |
| Carton Length | 8 in / 203.2 mm |
| Carton Width | 7.25 in / 184.15 mm |
| Certifications | CE, RoHS, UL1480A, UL2043 |
| Enclosure Properties | ABS Glass Fiber Reinforced, Injection Molded, Sealed |
| Enclosure Volume | 60 cu in / 983.22 cu cm |
| Included Accessories | Conduit Clamp, Grille, Paint Mask, Wire Nuts, Choose Between a Tile Bridge or Pre-Construction Bracket |
| Optional Accessories | Black Grille (GRL-CM31-BK)|Tile Bridge (AC-CM31-TB)|Pre-Construction Bracket (AC-CM31-PCB)|Junction Box (Included with pre-construction bracket) |
| Source Inputs | Wire Leads |
| IP Rating | IP54 |
| Backcan Diameter | 5.5 in / 139.7 mm |
| Backcan Height | 3.5 in / 88.9 mm |
| Coverage Angle (±6dB @ 2kHz) | 45¡ |
| Cutout Width/Diameter | 5.5 in / 139.7 mm |
| Directivity Factor (Q) (Averaged 100Hz - 10kHz, @ 2kHz) | 4.5 and 3.5 |
| Directivity Index (DI) dB (Averaged 100Hz - 10kHz, @ 2kHz) | 5.3dB and 5.2dB |
| Frequency Response (± 10 dB) | 115 Hz - 22 kHz |
| Frequency Response (± 3 dB) | 190 Hz - 14 kHz |
| Grille Properties | Aluminum, Black, Standard-Flange, Powder-Coated, Snap-Fit |
| Low Frequency Voice Coil | 0.75 in / 19 mm |
| Max. Ceiling Thickness | 1.5 in / 38.1 mm |
| Max. Continuous Power RMS | 20W |
| Max. Program Power | 40 W |
| Minimum Impedance (½ Ohms) | 8 ½ |
| Minimum Ceiling Thickness | 0.1 in / 2.5 mm |
| Nominal Impedance (½ Ohms) | 8 ½ |
| Fullrange Driver | 3" Polypropylene driver with butyl rubber surround |
| Sensitivity dB @ 1W/1M | 85 dB |
| Sensitivity dB @ 2.83V/1M | 85 dB |
| Tap Selector | Rotary Switch |
| Transformer Options | 25 / 70.7 / 100 V, 8 Ohm direct |
| Transformer Taps Max. Setting (25V/70.7V/100V) | 1.3W/10W/30W |
| Visible Diameter | 6.3 in / 160 mm |
| Visible Height | 0.6 in / 15.2 mm |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 2065 reviews
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Product Reviews
★★★★★ 5
Quality is good considering low cost.
Color: Silver1
Good quality for an inexpensive salt/pepper grinder. Works fine and should last a reasonable time
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Reviewed in the United States on May 28, 2026
★★★★★ 4
Looks nice and seems to work well, but the black retaining ring randomly fell out.
Color: 1pcs-Sliver-304, Color: 1pcs-Sliver-304
The pepper grinder looks nice and initially functioned well as expected. However, as at least 9 other reviewers have noted experiencing, within 2 weeks of purchase and after very minimal usage, the black retaining ring around the grinder cone & adjustment knob just fell out when I was using the grinder, which was disappointing and indicative of poor design or construction for this part. After some research & experimentation, I was able to pop the ring back into place using needle-nose pliers (you just need something hard and narrow to push and flex the ring a bit, not necessarily pliers). I'm hoping that this is not a harbinger of other problems to come. Otherwise it's a nice grinder.
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Reviewed in the United States on April 18, 2026
★★★★★ 5
Not Overly Large and Easy to Use
Color: Silver1, Color: Silver1
I’ve been looking for a salt grinder for a long time. I was hoping to find something small—closer to the disposable grinders you see at the grocery store—but those don’t really seem to be available.
So I decided to try this one, and overall I’m glad I did. I’ve included photos to give a better sense of the size compared to your store size non-refillable salt grinders, since it’s a bit larger than what I originally had in mind.
The grinder works smoothly and doesn’t require much effort to use. You can easily adjust the grind size by turning the knob on the top of the grinder, which is a nice feature.
Refilling it was also straightforward. I had no trouble pouring in coarse Himalayan salt from a larger container without making a mess.
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Reviewed in the United States on April 24, 2026
★★★★★ 5
Salt or pepper grinder.
Color: Silver1
Excellent product. I accidentally broke one of mine and was pleased that I was able to purchase one grinder. They’re beautiful and very well made. Grind salt and pepper easily and many different coarseness. And they are pretty.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Inexpensive but certainly not 'cheap'
Color: Silver1
These work well and feel like very good quality far in excess of what you might expect for the price. I am very happy with my purchase.
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Reviewed in the United States on May 13, 2026