Fosi Audio SW10 Active Subwoofer

Description

About the Fosi Audio SW10 Active Subwoofer

The Fosi Audio SW10 Active Subwoofer has a 10-inch down-firing driver that combines with a 200-watt RMS Class D amplifier and dual rear bass ports. As a result, the SW10 can deliver substantial low-frequency output without placing the driver prominently on the front of the cabinet.

Fosi Audio has also included useful setup controls. These include an adjustable crossover, continuously variable phase, two DSP EQ modes, and signal-sensing automatic power operation.

What We Think

The SW10 offers an unusually complete feature set for an affordable 10-inch subwoofer.

We particularly like the adjustable 0° to 180° phase control. Many subwoofers at this level provide only a basic 0°/180° switch. The continuously variable control gives you more freedom to align the SW10 with your speakers and listening position.

Its EQ modes are also practical. If can deliver a fuller, more forceful presentation for movies and entertainment, or prioritises faster and more controlled bass for music.

However, the SW10 is not exceptionally small. Its substantial 14kg cabinet and dual-port design need adequate floor space and some breathing room behind the enclosure. Placement and setup will therefore play a major role in the final result.

For music systems, compact home cinemas, and bookshelf speakers needing extra weight, the SW10 appears to deliver impressive hardware and useful tuning flexibility for its price.

 

 

View Product Manual & Support >> View Fosi Audio Products >>

 

The Fosi Audio SW10 Active Subwoofer Is Ideal For

• Bookshelf speakers that need deeper bass
• Compact stereo and streaming systems
• Affordable home theatre installations
• Music, movie, television, and gaming systems
• Fosi Audio amplifier and SP601 speaker owners
• Buyers who want both LFE and stereo RCA connectivity
• Listeners who prefer adjustable phase and crossover controls
• Rooms where a clean, minimalist subwoofer is preferred
• Buyers wanting a choice between music and movie EQ profiles
• Dual-subwoofer systems using compatible line-level connections

 

Reviews & Comments

• Pragmatic Audio awarded the SW10 four out of five overall, with five-star ratings for price and features. The reviewer found that its large driver and ported cabinet produced authoritative bass. He also praised the extensive setup controls and value. However, he noted that established competitors can offer more advanced DSP and greater performance relative to cabinet size.

 

Frequently Asked Questions

1. What size driver does the Fosi Audio SW10 use?
   The SW10 has a single 10-inch high-excursion polypropylene woofer. It is mounted underneath the cabinet and fires towards the floor. This arrangement keeps the driver concealed while helping distribute low-frequency energy into the room.
2. How powerful is the Fosi Audio SW10?
   Its built-in Class D amplifier is rated at 200 watts RMS and 500 watts peak. The RMS figure is the more useful indication of continuous amplifier output. Peak power refers to short-duration capability rather than sustained output.
3. How low does the SW10 play?
   Fosi Audio publishes a frequency response beginning at 30Hz. However, the bass heard in your room will depend on placement, room dimensions, listening position, EQ mode, and volume. It should add worthwhile depth to most bookshelf and compact floorstanding speakers.
4. Is the SW10 better for music or movies?
   It is designed for both. EQ1 provides a richer and more powerful presentation suited to movies, games, and entertainment. EQ2 produces faster and more precise bass, making it the recommended starting point for music and Hi-Fi listening.
5. Can I connect the SW10 to an AV receiver?
   Connect the receiver’s subwoofer or LFE output to the SW10’s LFE input using a shielded RCA subwoofer cable. Select LFE mode on the subwoofer, then configure speaker sizes, crossover, distance, and level through the receiver.
6. Can I use the SW10 with a stereo amplifier?
   Yes, provided the amplifier has a subwoofer output, preamp output, or another suitable variable line-level connection. The SW10 does not have speaker-level inputs, so it cannot connect directly to conventional speaker terminals.
7. Can I connect it to powered speakers?
   Yes, if the powered speakers or their controller provide a suitable subwoofer or variable line-level output. A fixed-volume output is generally unsuitable because the subwoofer level would not change with the speaker volume.
8. What crossover setting should I use?
   Around 80Hz is a sensible starting point for many bookshelf speakers. Smaller speakers may require a setting between 90Hz and 120Hz. Larger speakers may integrate better between 50Hz and 80Hz. Final adjustment should be made by listening or measuring from the main seating position.
9. How do I adjust the phase control?
   Play familiar music with steady bass around the crossover frequency. Adjust the phase control until the bass sounds strongest and most coherent at the listening position. Then recheck the volume because improved phase alignment may increase perceived output.
10. Where should I position the Fosi Audio SW10?
    Start near the front speakers with some clearance behind the dual rear ports. Avoid placing it inside enclosed furniture. If the bass sounds weak or boomy, try another location. The subwoofer crawl method can help identify positions that produce smoother bass at the main seat.
11. Can the SW10 be placed on carpet?
    It can be used on a stable carpeted floor, provided the feet maintain adequate clearance beneath the down-firing driver. Very thick or soft carpet may obstruct airflow or make the cabinet unstable. A rigid platform can help in those situations.
12. Does the SW10 switch itself on and off?
    Auto mode uses signal detection to activate the amplifier when audio is present and return it to standby after inactivity. You can also select the conventional On mode if signal detection is unreliable at very low playback levels.
13. Can I use two Fosi Audio SW10 subwoofers?
    The RCA line output can help route a signal to another compatible active subwoofer. Alternatively, an AV receiver or processor with dual subwoofer outputs can feed both units. Two correctly placed subwoofers can improve bass consistency across several seats.
14. Is the Fosi Audio SW10 suitable for a large room?
    The 10-inch driver and ported cabinet can deliver substantial output, but suitability depends on room volume and expected playback level. One SW10 should work well in many small or medium rooms. A large open-plan space or high-output cinema may benefit from two units or a larger, deeper-reaching subwoofer.

 

Key Features

10-Inch Down-Firing Driver

The SW10 uses a 10-inch high-excursion woofer with a polypropylene diaphragm. Its down-firing arrangement directs energy towards the floor, helping distribute bass throughout the room while keeping the driver visually concealed.

This layout also gives the subwoofer a clean and understated appearance.

200W RMS Class D Amplifier

An integrated Class D amplifier delivers 200 watts RMS and up to 500 watts peak.

Therefore, you do not need a separate subwoofer amplifier. Simply connect an audio signal, attach the supplied power cable, and configure the controls for your system.

Dual Rear Bass Ports

Two flared rear ports increase airflow and support stronger low-frequency output. They help the SW10 produce fuller bass from its relatively compact cabinet.

However, rear-port clearance is important. Placing the enclosure hard against a wall may produce excessive or uneven bass.

Precision DSP with Driver Protection

Fosi Audio’s internal DSP manages the subwoofer’s response and includes Dynamic Range Control limiting.

This protection helps prevent the driver from becoming overloaded during demanding movie effects or bass-heavy music.

Two Selectable EQ Modes

The rear-panel EQ switch provides two sound profiles:

1. EQ1: Richer and more powerful bass for movies, gaming, and entertainment
2. EQ2: Faster and more precise bass for music and Hi-Fi listening

These modes offer simple sound adjustment without requiring an app or external equaliser.

Adjustable 40Hz to 180Hz Crossover

The continuously adjustable low-pass crossover helps blend the SW10 with different speakers.

A lower setting may suit larger floorstanding speakers. In comparison, a higher setting can support compact bookshelf or satellite speakers that produce less bass by themselves.

Continuously Adjustable Phase

Phase can be adjusted from 0° to 180°. This helps compensate for placement differences between the subwoofer and main speakers.

Correct phase adjustment can produce stronger, more focused bass around the crossover region.

LFE and Stereo RCA Inputs

A dedicated LFE connection integrates with the subwoofer output on an AV receiver or compatible stereo amplifier.

Stereo RCA line inputs are also provided. Therefore, the SW10 can work with systems that do not have a dedicated LFE output but offer variable preamp or line-level outputs.

RCA Line Output

The RCA output can pass the signal to another compatible active subwoofer or amplifier.

This makes a dual-subwoofer arrangement possible, subject to the configuration of the source equipment and the required signal routing.

Signal-Sensing Auto Power

In Auto mode, the SW10 detects an incoming audio signal and activates automatically. It returns to standby after the signal has been absent for the specified period.

A conventional always-on operating mode is also available.

Substantial MDF Cabinet

The SW10 uses an MDF cabinet with a PVC exterior finish. Its 14kg weight helps reduce unwanted enclosure vibration and resonance.

Rounded edges and a minimalist front panel also make it easier to incorporate into a modern room.

---

System Match Ideas

The SW10 is a natural partner for a compact streaming system built around the WiiM Amp Ultra and a pair of Triangle Borea BR03 speakers.

The BR03 provides an open, energetic presentation. Meanwhile, the SW10 adds low-frequency depth and weight that a bookshelf enclosure cannot reproduce by itself.

Connect the subwoofer output from the amplifier to the SW10’s LFE input. Then, use the amplifier’s bass-management controls where available. Start with the subwoofer level set conservatively and adjust it until the bass supports the speakers without becoming separately noticeable.

For music, EQ2 is the logical starting point. However, EQ1 may be preferable for movies, gaming, or listeners who enjoy a stronger low-frequency presentation.

 

Specifications

Brand: Fosi Audio
Model: SW10
Product Type: Active powered subwoofer
Enclosure Type: Bass-reflex enclosure
Driver Orientation: Down-firing
Driver: 10-inch high-excursion woofer
Diaphragm Material: Polypropylene
Amplifier Type: Class D
Rated Amplifier Power: 200W RMS
Peak Amplifier Power: 500W
Published Frequency Response: 30Hz to 120Hz
Low-Pass Crossover: Continuously adjustable from 40Hz to 180Hz
Phase Adjustment: Continuously adjustable from 0° to 180°
DSP: Fosi Audio precision DSP
Driver Protection: DRC limiting
EQ Modes: EQ1 and EQ2
EQ1 Application: Richer bass for movies and entertainment
EQ2 Application: Faster, more precise bass for music
LFE Input: Yes
Stereo RCA Line Input: Yes
Stereo RCA Line Output: Yes
Speaker-Level Input: No
Wireless Input: No
Auto Power: Yes, signal sensing
Operating Modes: On and Auto
Bass Ports: Two rear-firing ports
Cabinet Material: MDF
Exterior Finish: PVC
Dimensions: 360 × 360 × 400mm, W × D × H
Published Imperial Dimensions: 14.17 × 14.17 × 15.75 inches
Weight: 14kg
Published Imperial Weight: Approximately 30lb
Colour: White
Alternative Colours: Not currently published
Mains Power: Region-specific power connection
Power Cable Length: 1.8m

Included Accessories:

• Fosi Audio SW10 active subwoofer
• 1.8m power cable
• User manual

An RCA or LFE subwoofer cable is not listed among the manufacturer’s standard included accessories.

Rapallo Product Data

EAN: Not publicly published
UPC: Not publicly published
GTIN: Not publicly published
Manufacturer Part Number: SW10

 

Why Buy From Rapallo

✔ Practical subwoofer advice from experienced New Zealand audio specialists
✔ Help matching the SW10 to your speakers and amplifier
✔ Guidance on LFE, RCA, crossover, level, and phase setup
✔ Advice on room placement and bass integration
✔ Carefully selected cables and isolation accessories
✔ Stereo and home theatre system-design assistance
✔ New Zealand-based service and after-sales support
✔ Secure nationwide delivery
✔ Support before and after your purchase