Kanto SUB8VMB Sealed Powered Subwoofer 8 Inch
- Subwoofer Diameter: 8 inches
- Audio Driver Size: 8 inches
- Woofer Diameter: 8 inches
- Speaker Size: 8 inches
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A floor-standing 8 inch subwoofer with a 300 watt rating and RCA input, for extending bass in a wired stereo or home theater setup.
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ASIN: B0CL7W1M9DModel: SUB8Category: Subwoofers
Overview
Kanto's BNDL_SUB8VMB-WARRANTY-2 is a floor-standing powered subwoofer with an 8 inch driver, a 300 watt rating and an RCA input, finished in vinyl black.
The warranty portion of the model code suggests this listing bundles an extended warranty along with the subwoofer itself, though the exact terms are not in the spec data and should be confirmed on the product page. RCA is the only listed connection, which is the standard line-level input most receivers and amplifiers use for a subwoofer.
- 8 inch subwoofer driver
- 300W power rating
- RCA input
- Floor-standing vinyl black cabinet
Who it's for
Fits buyers adding low-frequency extension to a stereo or home theater system that has a subwoofer output on its receiver or amp. Not for anyone needing a wireless connection to the subwoofer.
Pros and cons
- 300 watt power rating
- 8 inch driver for low-frequency output
- Floor-standing footprint, roughly 11 x 11 x 12 in
- Listing appears to bundle an extended warranty
- RCA is the only connectivity listed, no wireless option
- Warranty terms are not detailed in the spec data
Performance notes
The 8 inch driver and 300 watt rating handle low-frequency output that smaller stereo or bookshelf speakers typically cannot reproduce, connecting via RCA to a receiver or amplifier's subwoofer output for line-level bass signal.
Specifications
| Brand | Kanto |
|---|---|
| Model | SUB8 |
| Dimensions & fit | |
| Subwoofer Diameter | 8 incheslower than 70% of 28 subwoofers |
| Audio Driver Size | 8 incheslower than 61% of 32 subwoofers |
| Woofer Diameter | 8 incheslower than 52% of 28 subwoofers |
| Speaker Size | 8 incheslower than 68% of 23 subwoofers |
| Item Dimensions D X W X H | 11 × 11 × 11.9 inches |
| Capacity & performance | |
| Speaker Maximum Output Power | 300 wattslower than 54% of 38 subwoofers |
| Audio Output Mode | Surround |
| Power & efficiency | |
| Power Source | Corded Electric |
| Number Of Power Levels | 1 |
| Construction & materials | |
| Enclosure Material | Metal |
| Color | Vinyl Black |
| Compatibility & installation | |
| Connectivity Technology | RCA |
| Connectivity Protocol | Wi-Fi |
| Subwoofer Connectivity Technology | Wired |
| Mounting Type | Floor Standing |
| Compatible Devices | Smartphone, Tablet, MP3 Player, Desktop, Television, Projector, Laptop |
| Warranty & support | |
| Warranty Type | Limited |
| Other details | |
| Speaker Type | Subwoofer |
| Control Type | Touch |
| Audio Driver Type | Dynamic Driver |
| Is Waterproof | No |
| Water Resistance Level | Not Water Resistant |
| Number Of Items | 1 |
| Number Of Circuits | 1 |
| Mp3 Player | No |
| Is Electric | Yes |
| Additional Features | 8" Paper Cone Woofer, RCA L/R Line Level Connection, Class D Amp, 300W Power, 35Hz-175kHz Frequency Response, Volume Knob, Low Pass Filter Frequency Control, Phase Switch, Power Switch, Standby Power, RCA Cable Included |
| Antenna Location | For Surround Sound Systems |
| Builtin Media | Speaker, Power Cord, RCA Cable, 3 X Manuals |
| Specific Uses For Product | Home Theaters, Music Systems, Surround Sound Applications |
| Frequency Response | 20 KHz |
| Impedance | 4 ohms |
Closest rivals on specs
Kenwood KSC-PSW7EQ Active Compact Subwoofer- Speaker Maximum Output Power 300 vs 160 watts (+88%)
OSD Audio IWS8 In-Wall Subwoofer 8 Inch- Speaker Maximum Output Power 300 vs 150 watts (+100%)
Frequently asked questions
What size driver is in the Kanto subwoofer?
8 inches.
What connection does it use?
RCA.
Does it include an extended warranty?
The model code includes a warranty reference, suggesting one is bundled, though exact terms should be confirmed on the product page.