Bowers & Wilkins ASW608 Review: Compact Powered Bass

Who Should Buy It

Key Specifications

Overview

The Bowers & Wilkins ASW608 is a compact powered subwoofer positioned as a way to add fast, tight, deep bass to smaller rooms. The listing describes it as delivering 'Big Sound in Small Places' through an 8 inch driver and a 200 watt Class D amplifier. Bowers & Wilkins is known for its 600 Series speakers, and this subwoofer is offered with finishes intended to match that line. The product type is clearly a powered subwoofer, meaning the amplifier is built into the cabinet, so no external power amp is required.

The ASW608 falls into the mid-range price tier for a powered subwoofer. It is not a budget no-name box, but it is also not a flagship home theater subwoofer with room correction and app control. The listing emphasizes installation flexibility with a suite of inputs and outputs, which suggests the subwoofer can work in both two channel music systems and multichannel home theater setups. Buyers looking for a compact solution from an established brand will likely consider this model.

The listing does not publish several key specifications, including frequency response, cabinet dimensions, and weight. That absence means the review can only evaluate the subwoofer on the basis of the driver size, amplifier power, and general feature set described. Still, the 8 inch driver and 200 watt amplifier are meaningful data points for expected output and control. The remainder of this review will work through sound quality, drivers, features, build, setup, and daily use.

Sound Quality

On paper, the ASW608 is built around an 8 inch driver, which typically favors speed and tightness over extreme low frequency extension. The listing describes the bass as 'fast, tight, deep', language that suggests the subwoofer is tuned for articulation rather than sheer rumble. A 200 watt Class D amplifier should provide enough control for an 8 inch driver in a modest room. The phrase 'Big Sound in Small Places' implies the subwoofer is designed to fill a small to medium space without overwhelming it.

Because the listing does not state the frequency response, it is impossible to say exactly how deep the subwoofer plays. The lack of a published low frequency extension means buyers cannot compare it directly to models that specify a range, such as 28 to 120 Hz. General knowledge suggests that an 8 inch driver in a compact cabinet will not produce the sub 30 Hz output of a larger 12 inch or 15 inch subwoofer. Instead, the ASW608 likely focuses on musical bass around 35 to 80 Hz, but that is an inference, not a published figure.

For music, the compact 8 inch driver and 200 watt amplifier should be well suited to acoustic bass, kick drum, and electronic bass lines that require quick transient response. In home theater, the subwoofer may add weight to explosions and effects in smaller rooms, but it is unlikely to pressurize a large open space. The listing does not mention a phase control, low pass filter, or room correction, so buyers should confirm those details in the manual if needed. Overall, the sound quality promise is one of control and integration rather than maximum output.

Drivers, Power and Room Fit

The ASW608 uses a single 8 inch driver, as stated in the feature bullet. The listing does not disclose the cone material, surround type, or voice coil design, so the driver's long term durability and excursion limits are not fully known. An 8 inch driver in a powered subwoofer is a common choice for compact rooms and close listening positions. It can handle moderate output levels without the cabinet becoming too large.

The built-in amplifier is a 200 watt Class D design, according to the listing. Class D amplification is efficient and produces less heat than traditional Class AB, which helps keep the compact cabinet from overheating. The 200 watt rating is presumably peak or RMS, but the listing does not specify which. For a small subwoofer, 200 watts is a solid amount of headroom, especially when paired with an 8 inch driver that does not need massive excursion to produce usable output.

Room fit is harder to assess because the listing does not publish the cabinet dimensions or weight. A compact subwoofer should fit in a corner, next to a console, or under a desk, but without measurements buyers cannot be certain. The title calls it 'Compact', and the 8 inch driver implies a smaller cabinet than larger subwoofers. For small apartments, offices, or bedrooms, the ASW608 should be relatively easy to place, but precise planning requires product dimensions from a manual or dealer.

Features and Connectivity

The listing mentions a suite of inputs and outputs that allows various installation options. It also lists 'RcaSpeaker' as the connector type, which suggests the subwoofer may accept speaker level inputs or RCA line level inputs. However, the exact number and type of RCA jacks, speaker binding posts, or XLR connections are not published in the listing. Buyers who need to match a specific receiver or preamp should verify the rear panel layout before ordering.

There is no mention of Bluetooth, Wi Fi, or app based control in the feature bullets. The product is described as corded electric, and the included components are a mains cable and an accessory pack. This positions the ASW608 as a traditional wired subwoofer rather than a smart or wireless speaker. For users who want to stream bass wirelessly from a phone, this model is not designed for that purpose.

• 8 inch driver with 200 watt Class D amplifier
• Suite of inputs and outputs for flexible installation
• RCA speaker connector type listed
• Corded electric power source
• Mains cable and accessory pack included
• Finishes intended to match 600 Series speakers

Build, Design and Finish

The product is listed in a black finish, and the feature bullets state that finishes are available to match Bowers & Wilkins 600 Series speakers. This suggests the cabinet is designed to sit alongside bookshelf or floorstanding speakers from that series without looking out of place. The listing does not specify the cabinet material or construction, whether MDF, vinyl wrap, or veneer. The overall build quality cannot be fully judged without seeing or handling the unit.

The 'Compact' label in the product title is an important design point. A small subwoofer is easier to hide in a room and can be placed in more locations than a bulky box. The 8 inch driver allows a smaller front baffle, and the Class D amplifier helps keep internal heat low, which may permit a sealed or lightly braced cabinet. Buyers should expect a straightforward black box design, not a statement piece.

The listing notes that the box includes a mains cable and an accessory pack. The accessory pack likely contains rubber feet, a manual, or possibly a grille, but the listing does not itemize those parts. The lack of a published weight and dimensions means buyers cannot assess how sturdy the cabinet feels. Bowers & Wilkins has a reputation for well built speakers, but this specific model's build details are only partially documented.

Setup and Placement

Setting up the ASW608 should be straightforward: connect the subwoofer output from a receiver or integrated amp to the appropriate input, plug in the mains cable, and adjust the volume. The listing mentions a suite of inputs and outputs, but because the exact controls are not published, users may need the manual to understand crossover or phase settings. The included accessory pack likely provides feet or spikes to protect floors.

Placement for a compact subwoofer is typically flexible, but the lack of published dimensions makes exact planning difficult. Common practice is to place a subwoofer in a corner for more boundary reinforcement, or along a wall for smoother response. Without knowing the cabinet depth or height, buyers cannot know if the ASW608 will fit under a specific table or behind a couch. The 8 inch driver suggests the cabinet is small enough for most small rooms.

The listing does not describe a phase switch, low pass filter, or auto on/off function. Many powered subwoofers include a variable low pass crossover and a phase control to blend with main speakers. If the ASW608 lacks these, setup may be less flexible for systems with full range speakers. Buyers should check the full manual for available adjustments before relying on the subwoofer to integrate seamlessly.

Daily Use

In daily use, the ASW608 should operate as a set and forget subwoofer once the level is matched to the main speakers. The 200 watt Class D amplifier is likely to remain cool and quiet during long listening sessions. Because the subwoofer has no wireless or app features, users will adjust settings on the rear panel and then leave them alone. This simplicity can be an advantage for those who do not want another app on their phone.

The listing does not mention an auto off or standby mode, so buyers might need to switch the subwoofer on and off manually or rely on a switched outlet. The corded electric power source means the subwoofer must be near an outlet, which can limit placement. The mains cable and accessory pack are included, so basic setup can begin immediately. If the accessory pack includes rubber feet, that will help reduce vibration transfer to wood floors.

Bowers & Wilkins is a mature brand with a history of building durable speakers, but this specific model's long term reliability is not documented in the listing. The Class D amplifier and sealed or ported 8 inch driver should be robust under normal home use. Without a published weight, it is hard to guess how substantial the cabinet is, but compact subwoofers from this brand are generally built to match their 600 Series companions.

Who Should Buy It

The ASW608 is best suited to someone who already owns Bowers & Wilkins 600 Series speakers and wants a matching subwoofer. The compact design also works for a small apartment, bedroom, or office where a large subwoofer would be impractical. Buyers who want a known brand and a straightforward wired subwoofer will find this model appealing. The mid-range price makes it a reasonable step up from generic budget subwoofers.

Home theater owners with smaller rooms can use the ASW608 to add impact to movie soundtracks without shaking the walls. Two channel music listeners who want a subtle low end foundation under bookshelf speakers will also appreciate the 8 inch driver's speed. Because the amplifier is built in, no external power amplifier is required, which simplifies the signal chain. The flexible input and output suite should allow connection to most receivers with a subwoofer output.

Alternatives Worth Considering

Shoppers considering the ASW608 might also look at other compact powered subwoofers from established brands. Some models in the same class offer app based controls, room correction, or wireless connectivity, though those features often push the price higher. If a buyer needs published frequency response and dimensions, a different model may provide more complete specifications. The lack of published measurements is a real consideration for analytical buyers.

For larger rooms or deeper bass, a 10 inch or 12 inch subwoofer from a comparable brand may be a better choice. The ASW608's 8 inch driver is likely limited in ultimate low frequency output, so a larger model would provide more headroom. Buyers who prioritize home theater rumble over music speed should consider stepping up in driver size. Those who need a subwoofer that can be hidden behind furniture will enjoy the compact dimensions of the ASW608, assuming the actual measurements allow it.

Verdict

The Bowers & Wilkins ASW608 is a compact powered subwoofer that promises tight, fast bass in a small package. The combination of an 8 inch driver and a 200 watt Class D amplifier is a sensible recipe for controlled low end in small to medium rooms. The flexible input and output suite, along with a finish intended to match the 600 Series, makes it an easy companion for existing Bowers & Wilkins owners.

However, the listing leaves out several important specifications, including frequency response, dimensions, and weight. Buyers who need to know how deep the subwoofer plays or how large the cabinet is will need to consult the manual or a dealer. There is also no mention of Bluetooth, app control, or room correction, so the ASW608 is a traditional wired subwoofer. For a mid-range price, it offers respectable hardware from a trusted brand, but the incomplete listing makes it hard to fully evaluate.

Overall, the ASW608 earns a score of 80 out of 100. It is a solid choice for music and moderate home theater use in compact spaces, provided the buyer is comfortable with the missing specifications. Those who need wireless features or deep extension should look elsewhere.

Strengths and Limitations

Alternatives to Consider

Audioengine HD6

Listeners who want a powered bookshelf stereo pair for vinyl with a built-in preamp, TV, and Bluetooth streaming without a receiver.

Read the Audioengine HD6 review →

Bose S1

A mobile performer or presenter who wants a battery-powered PA with mixer flexibility and multiple placement options.

Read the Bose S1 review →

Bowers & Wilkins AM-1

Outdoor patios, gardens, and poolside spaces where a fixed passive speaker can be powered by an existing receiver or amplifier.

Read the Bowers & Wilkins AM-1 review →

Questions Buyers Ask