Audio T Verdict
The Bowers & Wilkins AM-1 is a proper passive loudspeaker engineered to deliver clear, powerful music in places where a conventional indoor speaker would be unsuitable.
Its Nautilus tube-loaded aluminium tweeter provides a clean and detailed treble, while the 130mm glass-fibre driver and rear Auxiliary Bass Radiator give it impressive weight and scale for its compact dimensions.
The included aluminium bracket allows vertical or horizontal installation with extensive angle adjustment. Careful positioning, weather-resistant cabling and secure professional-grade wall fixings are essential for a reliable outdoor installation.
Bowers & Wilkins AM-1 Weather-Resistant Outdoor Speakers
The AM-1 is a compact two-way passive loudspeaker designed for patios, terraces, gardens, poolside areas and demanding indoor environments.
Each speaker combines a 25mm Nautilus tube-loaded aluminium dome tweeter with a 130mm glass-fibre bass and midrange driver and a rear-mounted Auxiliary Bass Radiator.
The speakers are supplied as a pair with dedicated aluminium wall brackets and can be installed vertically or horizontally according to the space and required listening coverage.
Made for Outdoor Listening
The AM-1 has been developed to cope with environmental conditions that would be unsuitable for most conventional Hi-Fi speakers.
Its sealed cabinet, rust-resistant aluminium grille and durable structural materials provide resistance to moisture, dust, ultraviolet exposure and changing outdoor temperatures.
Bowers & Wilkins subjects the AM-1 to demanding environmental testing, including ultraviolet exposure and accelerated salt-spray testing.
This makes it suitable for permanent installations in many sheltered and exposed outdoor listening areas, provided the speakers, cable routes and mounting surfaces are planned correctly.
Weather-Resistant Does Not Mean Indestructible
Bowers & Wilkins does not publish a specific IP rating for the AM-1.
Do not submerge the speaker, expose it to high-pressure water jets or assume that it is suitable for marine use. Avoid locations where standing water, flooding or physical impact could occur.
Nautilus Tube-Loaded Aluminium Tweeter
High frequencies are reproduced by a 25mm aluminium dome tweeter using Bowers & Wilkins’ Nautilus tube-loading technology.
A tapered tube behind the dome is designed to absorb unwanted rearward energy produced by the tweeter.
Reducing this interference helps the AM-1 deliver a cleaner, more open and precisely detailed treble response.
Its published frequency range extends to 50kHz at -6dB when wall mounted, helping the tweeter remain controlled throughout the audible range.
Inverted Drive-Unit Arrangement
The aluminium tweeter is positioned below the 130mm bass and midrange driver rather than above it.
Outdoor speakers are frequently mounted higher than the listener, so Bowers & Wilkins uses this inverted arrangement to angle the speaker’s optimum listening axis downwards by approximately 10 degrees.
This helps direct a more balanced sound towards people seated or standing beneath the speaker rather than sending its clearest output over their heads.
Maintain the Intended Orientation
When the AM-1 is installed vertically and above the listening area, the tweeter should normally remain below the bass and midrange driver.
The speaker can also be installed horizontally, with its bracket adjusted to direct the cabinet towards the required coverage area.
Glass-Fibre Bass and Midrange Driver
A 130mm glass-fibre cone handles the bass and midrange frequencies.
The material combines low mass with useful rigidity and controlled behaviour, helping the AM-1 reproduce voices and instruments with clarity while retaining sufficient output for open outdoor spaces.
Its size also provides greater musical weight and dynamic capability than many smaller background-audio speakers.
Auxiliary Bass Radiator
The AM-1 uses a rear-mounted Auxiliary Bass Radiator rather than a conventional open bass-reflex port.
The radiator works with the main bass and midrange driver to extend low-frequency output and improve bass weight.
Because it does not require an open port through the cabinet, it also helps the enclosure remain sealed against outdoor conditions.
This allows the AM-1 to deliver much of the low-frequency benefit associated with a ported speaker while retaining the structural advantages required by a weather-resistant design.
Impressive Bass for Its Size
When wall mounted, the AM-1 has a published frequency range extending down to 46Hz at -6dB and a response of 51Hz–22kHz on its reference axis.
The wall itself can reinforce lower frequencies, helping the compact speaker produce a fuller presentation than its dimensions might suggest.
Actual bass performance will depend on the mounting position, nearby boundaries, outdoor space and amplifier.
Outdoor Acoustics
Outdoor listening spaces behave differently from conventional rooms.
Without nearby walls and ceilings to contain and reflect the sound, bass and overall volume can appear less powerful than they would indoors.
Installing the speakers on a substantial wall and directing them towards the listening area can improve both tonal balance and perceived output.
Two correctly positioned speakers will normally produce more even coverage than attempting to play one speaker excessively loudly.
Positioning for a Patio or Terrace
For a typical patio or seating area:
- Mount the speakers at a similar height
- Position them symmetrically around the main listening area
- Direct both cabinets towards the centre of the seating
- Avoid placing them much further apart than the listening distance
- Keep both speakers clear of doors, shutters and opening windows
- Avoid locations where foliage will obstruct the drive units
- Ensure the brackets remain accessible for future inspection
- Route cables so they cannot be pulled or damaged
Small adjustments to the mounting angle can make a significant difference to clarity and coverage.
Covering a Larger Garden
A large or irregular outdoor area may require more than one pair of speakers.
Using several speakers at moderate levels can create more even coverage and reduce the need for any one pair to play excessively loudly.
The number of speakers, amplifier channels and electrical load must be planned together. Connecting several pairs directly to one stereo amplifier may present an unsuitable impedance.
Use Suitable Multi-Zone Amplification
For larger installations, a dedicated multi-channel or multi-zone amplifier is often preferable to connecting several pairs to one stereo output.
Audio T can help calculate the speaker load and recommend an amplifier arrangement suitable for the required number of AM-1 speakers.
Vertical or Horizontal Installation
The AM-1 can be installed in portrait or landscape orientation.
Vertical installation is suitable for many conventional stereo and distributed-audio applications, particularly when the speakers are mounted above the listeners.
Horizontal installation can be useful beneath overhangs, between architectural features or where available wall height is limited.
Both speakers in a stereo pair should normally use the same orientation and be aimed consistently towards the listening area.
220-Degree Bracket Adjustment
The supplied aluminium wall bracket allows the speaker to rotate through approximately 220 degrees.
This makes it possible to direct the AM-1 towards a patio, seating area, swimming pool or indoor listening zone without relying on a separate universal bracket.
Once the desired angle has been selected, the mounting mechanism should be locked securely so that wind, vibration or accidental contact cannot alter the speaker’s position.
One-Plug Mounting System
The speaker cable connects to terminals within the wall-mounted bracket.
Once the bracket and wiring are in place, the speaker attaches to the bracket using Bowers & Wilkins’ integrated one-plug connection system.
This avoids leaving exposed external terminals on the speaker cabinet and helps create a neat, weather-resistant installation.
The connection should be inspected carefully before the speaker is locked into position.
Switch the Amplifier Off First
Disconnect the amplifier from the mains before installing, removing or reconnecting the speakers.
Check the cable polarity and ensure that no loose copper strands can create a short circuit within the bracket.
Wall Construction and Fixings
Each AM-1 weighs approximately 4kg including its bracket, so the supporting wall and fixings must safely carry the speaker over an extended period.
The correct screws, plugs and anchors will depend on whether the wall is brick, block, concrete, timber or another construction.
Do not rely on lightweight surface materials or unsuitable plasterboard fixings.
External installations must also account for wind loading and the additional leverage created when the speaker is angled away from the wall.
Wall Fixings Must Suit the Installation
Universal screws and wall plugs cannot be specified safely for every property and wall type.
Use corrosion-resistant fixings selected for the wall construction and speaker weight. Seek professional installation where there is any uncertainty.
Check Before Drilling
Before mounting the brackets, check the proposed positions for:
- Electrical wiring
- Water and gas pipes
- Drainage and guttering
- Structural joints
- Wall cavities
- Insulation
- Doors and opening windows
- External lighting
- Nearby heat sources
- Obstructions that may limit bracket rotation
The mounting template should be used to mark the fixing positions accurately before any holes are drilled.
Outdoor Speaker Cable
The AM-1 is a passive speaker and requires a cable connection to an indoor or suitably protected amplifier.
For exposed cable runs, use speaker cable designed for outdoor or architectural installation, with suitable resistance to ultraviolet exposure, moisture and temperature changes.
Ordinary indoor cable may become brittle, discoloured or damaged when permanently exposed to outdoor conditions.
The cable route should also comply with relevant building and safety requirements.
Cable Routing
Speaker cable can be routed through the wall or brought to the bracket across the surface.
Concealed cable should be suitable for in-wall use and kept clear of mains wiring, pipework and bracket-fixing screws.
Surface cable should be supported using weather-resistant clips or containment rather than left loose.
Allow enough cable for connection and servicing without leaving excessive slack that could collect water or be pulled by wind.
Polarity
Connect the positive amplifier terminal to the positive connection within the AM-1 bracket and the negative amplifier terminal to the negative connection.
Correct polarity must be maintained across both speakers.
If one speaker is connected in reverse, bass response and stereo focus can be weakened, particularly around the centre of the listening area.
Amplifier Matching
Bowers & Wilkins recommends amplifier power between 20 and 100 watts into 8 ohms on unclipped programme material.
The AM-1 has a sensitivity of 86dB, a nominal impedance of 8 ohms and a minimum impedance of 5.2 ohms.
It can be partnered with a broad range of good-quality stereo amplifiers, streaming amplifiers and multi-zone installation amplifiers.
The correct amplifier will depend on the listening area, cable length, number of speakers and required playback level.
Outdoor Systems Often Need More Headroom
Open spaces do not reinforce sound in the same way as enclosed rooms, so the amplifier may need to work harder to achieve a similar perceived volume.
Choose capable amplification and reduce the level immediately if the sound becomes harsh, compressed or distorted.
Protecting the Amplifier
The AM-1 speakers are suitable for outdoor installation, but most conventional amplifiers are not.
The amplifier should normally remain indoors in a dry, ventilated and accessible position.
Where equipment must be installed elsewhere, use a properly designed weather-protected enclosure and ensure that ventilation, electrical safety and access requirements are met.
Do not place a domestic amplifier directly outside or in a damp shed simply because the connected speakers are weather resistant.
Stereo Music Outdoors
A pair of AM-1 speakers can reproduce conventional left and right stereo channels.
For the clearest image, position the speakers on either side of the listening area and direct them towards the principal seats.
Very wide spacing can create a gap in the centre, while placing the speakers too close together will reduce stereo separation.
For casual entertaining across a larger area, more even coverage may be more useful than a tightly focused stereo image.
Indoor Applications
The AM-1 can also be used indoors where its compact cabinet, bracket system or resistance to moisture provides a practical advantage.
Suitable applications may include:
- Indoor swimming-pool areas
- Conservatories
- Garden rooms
- Workshops
- Commercial hospitality spaces
- Fitness rooms
- High-mounted distributed-audio systems
The speakers should still be kept clear of direct water jets, excessive heat and unsuitable chemical environments.
Poolside Installation
The AM-1 can be used around suitable poolside and indoor swimming-pool areas, subject to careful positioning and installation.
Keep the speakers, cable routes and amplifier equipment clear of areas where they may be submerged or exposed to powerful water jets.
Swimming-pool environments may also contain chemicals and salts that can accelerate corrosion if the installation is not maintained.
Relevant electrical and building requirements should be checked by a suitably qualified professional.
Home Cinema and Surround Sound
The AM-1 can also serve as a wall-mounted surround speaker in a compatible home cinema system.
Its broad positioning flexibility makes it useful where conventional standmount speakers would occupy too much space or where the room connects to an outdoor entertaining area.
For indoor surround use, position the speakers according to the AV receiver layout and direct them towards or slightly above the seating area as appropriate.
Maintenance
Inspect the speakers, brackets, wall fixings and exposed cable periodically.
Remove loose dust and surface dirt using a soft, dry or lightly dampened cloth.
Do not use abrasive cleaners, solvents, pressure washers or stiff brushes on the cabinet or grille.
Check that the brackets remain tight and that corrosion, damaged cable insulation or movement in the supporting wall has not developed.
Inspect After Severe Weather
Check the installation after unusually strong winds, storms, impact or nearby building work.
Stop using the speakers and arrange an inspection if a bracket, fixing, cable or cabinet appears damaged.
Running In
The mechanical components of a new loudspeaker may settle during their initial period of use.
The AM-1 may sound slightly more open and evenly balanced after playing varied music at normal listening levels.
No special running-in signal is required. Avoid excessive volume and allow the speakers to develop naturally through ordinary use.
Finish Options
The AM-1 is available in:
The matching grille, cabinet and bracket create a discreet installation against either darker or lighter exterior surfaces.
Finish availability should be confirmed when ordering.
Key Features
- Weather-resistant passive outdoor loudspeakers
- Supplied as a pair
- Suitable for outdoor and demanding indoor environments
- Two-way design with Auxiliary Bass Radiator
- 25mm Nautilus tube-loaded aluminium dome tweeter
- 130mm glass-fibre bass and midrange driver
- Rear-mounted Auxiliary Bass Radiator
- Inverted driver arrangement for high wall mounting
- Optimum listening axis angled downwards by approximately 10 degrees
- Sealed cabinet construction
- Rust-resistant aluminium grille
- Glass-filled structural cabinet material
- Resistance to moisture, dust and ultraviolet exposure
- Vertical or horizontal installation
- Aluminium wall brackets included
- One-plug bracket connection system
- Approximately 220 degrees of rotational adjustment
- 46Hz–50kHz published frequency range when wall mounted
- 51Hz–22kHz frequency response on the reference axis
- 86dB sensitivity
- 8-ohm nominal impedance
- 5.2-ohm minimum impedance
- 20–100-watt recommended amplifier power
- 310mm high including bracket
- 180mm wide
- 210mm deep including bracket
- 4kg net weight per speaker
- Matte Black or Matte White finish
- Five-year limited manufacturer’s warranty
Frequently Asked Questions
Are the Bowers & Wilkins AM-1 speakers supplied as a pair?
Yes. This Audio T listing contains two passive AM-1 loudspeakers with their dedicated wall-mounting brackets.
Are the AM-1 speakers wireless?
No. They require speaker cable and a separate stereo, streaming, multi-zone or home cinema amplifier.
Do the AM-1 speakers contain amplification?
No. They are passive loudspeakers and contain no built-in amplifier, Bluetooth receiver or music-streaming system.
Are the AM-1 speakers waterproof?
Bowers & Wilkins describes them as weather-resistant, sealed and resistant to moisture, dust and ultraviolet exposure. No specific IP rating is published, so they should not be submerged or pressure washed.
Can they be left outside permanently?
They are designed for permanent outdoor installations, provided they are securely mounted, connected using suitable cable and not exposed to conditions outside their intended use.
Can the AM-1 be installed horizontally?
Yes. The speaker and supplied bracket support both vertical and horizontal installation.
How far can the bracket rotate?
The mounting system provides approximately 220 degrees of rotational adjustment.
Are wall brackets included?
Yes. Dedicated aluminium wall brackets are included with the speakers.
Are wall screws and plugs included?
Suitable wall fixings must be selected according to the wall construction, environmental conditions and speaker weight. Confirm the package contents before installation and do not rely on unsuitable universal fixings.
Can the AM-1 be mounted to plasterboard?
Only where the fixings attach securely to appropriate structural support or a suitably reinforced installation. Lightweight plasterboard alone should not be relied upon to carry the speaker.
Can it be ceiling mounted?
The supplied system is described as a wall bracket. Any proposed overhead installation should be assessed and completed by a suitably competent professional using an approved, secure method.
Which way up should the AM-1 be mounted?
For a typical high vertical wall installation, the tweeter should remain beneath the bass and midrange driver so the speaker’s intended listening axis is directed downwards.
Can the AM-1 be installed near a swimming pool?
It can be used in suitable poolside and indoor-pool applications, but it should not be submerged or subjected to high-pressure water. Local electrical, construction and safety requirements must be followed.
Can the AM-1 be used indoors?
Yes. It can be used for conventional indoor stereo, distributed audio or surround sound where its compact wall-mounted design is useful.
What amplifier power is recommended?
Bowers & Wilkins recommends amplifier power between 20 and 100 watts into 8 ohms on unclipped programme material.
What is the minimum impedance?
The nominal impedance is 8 ohms and the published minimum is 5.2 ohms.
Can several pairs be connected to one amplifier?
Potentially, but the combined speaker load must be checked carefully. A dedicated multi-zone or multi-channel amplifier is often the safer and more flexible solution.
Does the AM-1 need a subwoofer?
Not necessarily. Its Auxiliary Bass Radiator gives it useful bass extension, although a suitably installed subwoofer can add deeper low-frequency output to an indoor or protected entertainment system.
What type of speaker cable should be used outdoors?
Use low-resistance cable designed for outdoor or architectural installation, with suitable resistance to moisture, ultraviolet exposure and temperature changes.
How large is each speaker?
Including its wall bracket, each AM-1 measures approximately 310mm high, 180mm wide and 210mm deep.
How much does each speaker weigh?
Each AM-1 weighs approximately 4kg.
What finishes are available?
The AM-1 is available in Matte Black and Matte White.
How should the speakers be cleaned?
Use a soft, dry or lightly dampened cloth. Do not use abrasive cleaners, solvents, stiff brushes or pressure-washing equipment.
What warranty is included?
Bowers & Wilkins provides a five-year limited warranty for passive loudspeakers, subject to its current terms, exclusions and intended-use requirements.
Related Bowers & Wilkins Products and Audio T Guides
Why Buy From Audio T?
- Bowers & Wilkins speaker demonstrations
- Outdoor speaker positioning and coverage advice
- Amplifier and multi-zone system matching
- Help planning systems with multiple speaker pairs
- Outdoor and architectural speaker-cable guidance
- Advice on wall construction and bracket positioning
- Stereo, distributed-audio and home cinema planning
- Installation and setup support, subject to location
- Ongoing after-sales support
Contact your local Audio T store to discuss a Bowers & Wilkins AM-1 outdoor audio system.