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Description
SoundTube CM31-EZ-BK In Ceiling Speaker (Black) - 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 | Black |
| UPC | 752830439887 |
| 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
4.0 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 4
Does Exactly What It Should
Size: CRV 2017-22 1.5L Gas
I bought the Cocoauto 2019 Honda CRV Cabin Air Filter and Engine Air Filter, and they both met my expectations perfectly. They fit just like the OEM parts and were easy to install without any hassle.
The quality seems solid, and my car's airflow feels nice and clean again. No complaints here—just good, reliable filters that get the job done. Definitely worth it if you’re looking for an affordable replacement option.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2025
★★★★★ 5
best way to buy them
Size: CRV 2017-22 1.5L Gas
good product handy package at a good price convient to have the engine and cabin filters together
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
★★★★★ 5
easy to install
Size: CRV 2017-22 1.5L Gas
quality filter and reasonable priced
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
★★★★★ 5
⭐⭐⭐⭐⭐ Perfect fit and clears well
Size: H309 (12")
I purchased the BOSCH H309 OE Specialty rear wiper blade as a replacement, and it fit perfectly. Installation was quick and easy, and it snapped right into place without any issues.
The wiping performance is excellent. It clears the rear window smoothly and evenly, with no streaking or skipping. Even in heavier rain, it does a great job keeping the glass clean and clear.
The build quality feels solid, which is what I expect from Bosch. After regular use, it’s still performing well and hasn’t shown any signs of wear.
Overall, this is a high-quality rear wiper blade that works exactly as intended. Easy to install, great performance, and reliable quality. I would definitely buy it again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 15, 2025
★★★★★ 5
Great Pick
Size: H326 (13")
Fits perfect for my 2006 Hyundai Santa Fe. Doesn’t leave streaks and doesn’t make much noise compared to my old one. Had an awful storm and it kept up well and was shockingly durable. It offers good coverage on the rear windshield and is clear enough that I can still see.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
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