Kanto SUB8VMB Sealed Powered Subwoofer 8 Inch
- 8 inch paper cone woofer
- 300 W Class D amplifier
- RCA line level input, RCA cable included
- 35 Hz to 175 kHz frequency response
- Volume, low-pass and phase controls
- 4 ohm impedance
- Power cord, RCA cable, 3 manuals in the box
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A compact powered subwoofer with a Class D amplifier, line level RCA input and tuning controls. The listing carries a bundle style title, so confirm the warranty terms with the seller.
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ASIN: B0CL7W1M9DModel: SUB8Category: Subwoofers
Overview
A paper cone woofer driven by a Class D amplifier delivers the bass here, and an RCA line level input takes the signal. A volume knob, low-pass control and phase switch let the level be matched to the main speakers.
Built in amplification and a full set of controls are the reasons to look at it, and the RCA cable is included. The limitation is the listing quality, which shows a contradictory wireless protocol entry and a bundle label.
Who it's for
A small home theater or music setup with a line level output from the receiver suits this unit. Shoppers who want a wireless link, or who need clear warranty terms from the listing, should confirm both before buying.
Pros and cons
- Powered by a Class D amplifier
- RCA cable included
- Volume and low-pass controls
- Wired connection only
- Listing shows a contradictory protocol entry
- Warranty terms unclear
Performance notes
The amplifier powers the woofer, so no external amplifier is needed, and the low-pass control sets where bass hands off to the main speakers. The phase switch aligns the woofer movement with the main speakers to reduce cancellation. Placement near a wall or corner strengthens bass.
Specifications
| Brand | Kanto |
|---|---|
| Model | SUB8 |
| Dimensions & fit | |
| Subwoofer Diameter | 8 incheslower than 74% of 24 subwoofers |
| Dimensions | 11 x 11 x 11.9 inches (D x W x H) |
| Item Dimensions D X W X H | 11"D x 11"W x 11.9"H |
| Capacity & performance | |
| Speaker Maximum Output Power | 300 Watts |
| Audio Output Mode | Surround |
| Power & efficiency | |
| Power Source | AC |
| Construction & materials | |
| Enclosure Material | Metal |
| Color | Vinyl Black |
| Compatibility & installation | |
| Connectivity Technology | RCA L/R line level |
| Subwoofer Connectivity Technology | Wired |
| Mounting Type | Floor Standing |
| Compatible Devices | Smartphone, Tablet, MP3 Player, Desktop, Television, Projector, Laptop |
| Connectivity Protocol | Wi-Fi |
| Warranty & support | |
| Warranty Type | Limited |
| Other details | |
| Amplifier | Class D |
| Builtin Media | Speaker, power cord, RCA cable, 3 manuals |
| Frequency Response | 35 Hz to 175 kHz |
| Impedance | 4 Ohms |
| Controls | Volume knob, low-pass filter frequency control, phase switch, power switch |
| Audio Driver Type | Dynamic Driver |
| Controller Type | Corded electric |
| Is Electric | Yes |
| Is Waterproof | FALSE |
| Speaker Type | Subwoofer |
| Water Resistance Level | Not Water Resistant |
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Frequently asked questions
How big is the Kanto SUB8 subwoofer?
The listing gives 11 inches deep, 11 inches wide and 11.9 inches high.
What comes with the Kanto SUB8?
The listing names the speaker, a power cord, an RCA cable and 3 manuals.
Can the Kanto SUB8 connect wirelessly?
The listing shows a wired subwoofer connection through RCA. A Wi-Fi protocol entry also appears, which contradicts that, so treat it as a wired unit.
Does the Kanto SUB8 need a separate amplifier?
No. The listing shows a built in Class D amplifier and an AC power source.