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Description
SoundTube SM31-EZ Surface Mount Speaker - 3" (Black)The SM31 EZ is a premium full range 3 inch surface mount speaker, with overall dimensions smaller than a 4 inch sphere. The speaker incorporates a theft and corrosion resistant mounting mechanism with indexed swivel joint for complete hemispherical aiming. SM31 EZ speaker components have been weatherized for indoor and outdoor applications. The SM31 EZ is an 8 ohm speaker with an ultra low profile ZeroReflectionABS enclosure (4 inch diameter by 3. 5
The SM31-EZ is a premium full range 3 inch surface mount speaker, with overall dimensions smaller than a 4 inch sphere. The speaker incorporates a theft and corrosion resistant mounting mechanism with indexed swivel joint for complete hemispherical aiming. SM31-EZ speaker components have been weatherized for indoor and outdoor applications. The SM31-EZ is an 8 ohm speaker with an ultra-low profile ZeroReflection™ABS enclosure (4 inch diameter by 3.5 inch deep, including mounting plate). IP-Rating: IP64.
Specifications
| Color | Black |
|---|---|
| UPC | 752830446380 |
| Manufacturer | SoundTube |
| Manufacturer's Category | SM-EZ Economical Surface Mount |
| Height | 4.35 in / 110.5 mm |
| Width/Diameter | 4.35 in / 110.5 mm |
| Shipping Weight | 1.85 lbs / 0.84 kg |
| Carton Height | 6.25 in / 158.75 mm |
| Carton Length | 6.5 in / 165.1 mm |
| Carton Width | 6.25 in / 158.75 mm |
| Certifications | CE, RoHS, UL1480A |
| Enclosure Properties | ABS Glass Fiber Reinforced, Injection Molded, Sealed |
| Enclosure Volume | 60 cu in / 983.22 cu cm |
| Optional Accessories | Junction Box (AC-SM31-JBOX)|Black Transformer (AC-SM31-XFMR-BK)|Black Wall Plate (AC-SM31-MP-BK)|Black Grille (GRL-RS31-BK) |
| Source Inputs | Terminal Strip |
| IP Rating | IP64 |
| Coverage Angle (±6dB @ 2kHz) | 43° |
| Directivity Factor (Q) (Averaged 100Hz - 10kHz, @ 2kHz) | 4.9 and 7.1 |
| Directivity Index (DI) dB (Averaged 100Hz - 10kHz, @ 2kHz) | 5.1dB and 8.5dB |
| Frequency Response (± 10 dB) | 120 Hz - 22 kHz |
| Frequency Response (± 3 dB) | 170 Hz - 14 kHz |
| Grille Properties | Aluminum, Powder-Coated |
| Low Frequency Voice Coil | 0.75 in / 19 mm |
| Max. Continuous Power RMS | 20W |
| Max. Program Power | 40 W |
| Minimum Impedance (Ω Ohms) | 8 Ω |
| Mounting Depth | 3.81 in / 96.8 mm |
| Nominal Impedance (Ω Ohms) | 8 Ω |
| Fullrange Driver | 3" Polypropylene driver with butyl rubber surround |
| Sensitivity dB @ 1W/1M | 85 dB |
| Sensitivity dB @ 2.83V/1M | 85 dB |
| Transformer Options | 25 / 70.7 / 100 V |
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
4.5 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 5
Toughest ball of this type.
Color: Blue
My dogs are brutal with these toys. I really like them as the spikes act as a tooth brush, and the dogs love knawing on them. There are other spiked balls like this on amazon, but this one is of better quality. It lasts a lot longer. The squeaker does not last long, the dogs teeth push it into the ball, you can hear it rattling around in there.
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Reviewed in the United States on December 1, 2025
★★★★★ 4
Very good for aggressive chewers
Color: Red, Blue, Green, Yellow
Finally found ball that my aggressive chewer doesn't destroy. Has loud squeaker however he broke after 4 days. Probably better, noise gone. Very sturdy and he loves. Also big so doesn't roll under furniture.
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Reviewed in the United States on January 25, 2025
★★★★★ 5
Durable
Color: Purple
I bought this for my 80lb 1yr American Bully male,who has made it his mission to test all the toys his dad and I have bought. Now I have 3 other American Bullies, siblings 3yr old 2 females/1male, who did the same at that age and I mastered toy shopping or so I thought. Lol. My new pup loves balls and this is the only one he firstly can't fit completely in his mouth and can't tear it apart. He has tired!
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Reviewed in the United States on May 6, 2026
★★★★★ 5
My Dogs Loved Them!
Color: Purple
My dogs loved these for playing fetch. They seem heavier duty than previous ones I have had. Beware of the incoming constant squeak sounds if your pup gets really into chewing it.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Shockingly, good ball!
Color: Purple, Color: Purple
I have a Doberman. She is a ball and toy destroyer. She is the most obsessive retriever I’ve ever had. Her retrieving urge, and indefatigability, puts my golden retriever to shame. Because of this, we throw the ball all the time. She is primarily an indoor dog and we have to exhaust her energy and so throwing the ball is how this is done. I got these balls in an effort to try to find something that would last longer than a few days. I have now had these 2 balls for six weeks. They are both still alive! It literally blows my mind. When I bought them, we took bets on how long they would last. I gave it a week. I lost my bet. I got the extra large size. It’s perfect for the giant jaw span of a full grown Doberman. It squeaks, which is irritating to us, but what she loves. She can lay there and chew on it and still not destroy it. They’re very heavy ball and bounce, so you have to be careful throwing it in the house cause you could hurt breakables. Whoever said that these feel like they came from the dollar tree must have been talking about something else. They are thick and sturdy balls.
UPDATE: it has now been THREE MONTHS and our Doberman STILL has not destroyed these 2 balls. We play with them many times each day. WORTH EVERY PENNY
ADDITIONAL UPDATE: it’s now been nine months. Took this photo this morning. We still have the balls and have since ordered two more. She chews on it multiple times every day. There’s a little hole in it now and it doesn’t squeak anymore but it’s 98% intact and still essentially indestructible. These balls are worth gold.
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Reviewed in the United States on March 27, 2023