Acoustic Energy AE1 40th Anniversary is a 2-way Passive Bass Reflex Bookshelf speaker by Acoustic Energy. It was released in October 2025. It features a 1.1" Dome Tweeter and 1 x 5" ceramic-coated aluminium Woofer.
A remake of the 1987 AE1 with every part redesigned, because the originals are long out of production. 29 mm anodised aluminium dome tweeter on a 29 mm voice coil, ferrofluid cooled, with a shallow profile and a large rear chamber. One 125 mm (5-inch) woofer with a straight-sided spun aluminium cone, hard-anodised on both sides, an aluminium shorting ring in the motor and a 5 ohm DC resistance (the original was 7 ohm, which is why it needed so much power). Low-order crossover at 2.8 kHz. 18-22 mm RSC constrained-layer HDF/bitumen cabinet, braced, with twin front ports flared inside. Frequency range is quoted at +/-6 dB, not the usual +/-3 dB.
The speaker has a frequency range of 50-45k Hz and a sensitivity of 87 dB. Acoustic Energy AE1 40th Anniversary has an MSRP of 1999$ per pair.
Room Size Suitability
The size of the room where you plan to use the Acoustic Energy AE1 40th Anniversary is a crucial factor in your decision. We have assessed its suitability for various room sizes based on its dimensions and maximum power output:
| Listening Environment* |
Suitability |
| Near-field | Average |
| Small Room | Good |
| Mid-size Room | Average |
| Large Room | Poor |
| Very Large Room | Bad |
(* Approximate Room sizes: Small < 100sq. ft / 9 m2, Mid-size: 100-220 sq. ft / 9-20 m2, Large 220-400 sq. ft / 20-36 m2, Very Large: > 400 sq. ft / 36 m2.
Average Floor Height: 9" / 2.7m. Typical room sizes differ from country to country, and the actual listening experience changes depending on floor height, room shape, surface materials, listening position, speaker locations, etc.)
Acoustic Energy's 40th Anniversary Series of Loudspeakers
AE1 40th Anniversary is a member of Acoustic Energy's 40th Anniversary series of Passive speakers. Below you can see the main specs of these speakers.
Acoustic Energy 40th Anniversary Series Speakers
Frequency Response of the Acoustic Energy AE1 40th Anniversary Speaker
Acoustic Energy AE1 40th Anniversary has a Frequency response range of 50-45k Hz at ±6dB and Power Range of up to 150 watts. With a minimum frequency of 50 Hz, AE1 40th Anniversary delivers moderate bass depth so depending on your use case, you might want to consider adding a subwoofer to your system.
Here we have a comparison of how AE1 40th Anniversary's Low frequency value compares with the average, max and min Low frequency values in its class.
Low Frequency
Bookshelf Speakers
Acoustic Energy AE1 40th Anniversary
Thinking about a subwoofer for the Acoustic Energy AE1 40th Anniversary?
Among the speakers in our database priced under $2,000 a pair, there is only one Passive Bookshelf speaker that has deeper bass than the Acoustic Energy AE1 40th Anniversary's 50Hz:
Crossover frequency of the Acoustic Energy AE1 40th Anniversary?
The crossover frequency of the AE1 40th Anniversary is set to 2800Hz. This is the threshold frequency where the higher frequency signals over this level are sent to the tweeter and the lower-frequency signals are sent to the woofer by the crossover component.
Impedance and Sensitivity
Acoustic Energy AE1 40th Anniversary's nominal impedance level is
6 ohms and has a sensitivity of
87 dB.
Sensitivity
Bookshelf Speakers
Acoustic Energy AE1 40th Anniversary
Nominal Impedance of the 6 Ohms makes the Acoustic Energy AE1 40th Anniversary a relatively difficult to drive speaker compared to more frequently found 8 ohms speakers from nominal Impedance perspective.
Sensitivity
With a sensitivity level of only 87 dB, Acoustic Energy AE1 40th Anniversary is a difficult to drive speaker from Sensitivity perspective, make sure to choose an amplifier with a high output if you like listening to your music at high volume levels. You may especially have a hard time using Tube amplifiers which are traditionally very low power compared to Class A/B or Class D amps. Work out how loud the Acoustic Energy AE1 40th Anniversary plays in your room →
Running more than one pair from a single amplifier? Check the load it would present →
What amplifier does the Acoustic Energy AE1 40th Anniversary need?
At normal listening levels in a medium room, about
20–150 W
per channel into 6 ohms.
Set your own conditions and we will rank every amplifier we cover.
Prefer to browse? Integrated amplifiers under $2,000, or every amplifier we cover.
Input Type
AE1 40th Anniversary features type connectors.
Acoustic Energy AE1 40th Anniversary External Dimensions and Weight
Acoustic Energy AE1 40th Anniversary has external dimensions of (Height x Width x Depth) 11.6 x 7.1 x 9.4inch (295.0 x 180.0 x 240.0mm ).
Base Surface Area
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base area of Acoustic Energy AE1 40th Anniversary is approximately 432.0cm2 / 67.0inch2.
Millimetres are hard to picture, so here is the Acoustic Energy AE1 40th Anniversary drawn to scale next to the B&W 706 S2, the closest bookshelf to it in price that we cover.
Size, drawn to scale
Both speakers and both views share one scale, so everything here is directly comparable. Hover a box for its dimensions.
One scale for both, standing on the same surface and pushed back to the same wall, so the deeper one visibly sticks out further.
B&W 706 S2 needs about 39% more floor or shelf area. B&W 706 S2 is 61mm deeper, so it stands that much further out from the wall. B&W 706 S2 is 45mm taller.
Full comparison: Acoustic Energy AE1 40th Anniversary vs B&W 706 S2 ›
Find speakers that fit your shelf or alcove → · Work out where they should sit in the room →
WeightThe Acoustic Energy AE1 40th Anniversary weighs 7.00kg / 15.4lbs per piece. Here is a comparison of how AE1 40th Anniversary's weight compares with the average, max and min weights in its class.
Weight
All Bookshelf Speakers
Acoustic Energy AE1 40th Anniversary
Weight
Bookshelf Speakers under $2,000
Acoustic Energy AE1 40th Anniversary
Cabinet type and Materials
Acoustic Energy AE1 40th Anniversary has a
Bass Reflex type cabinet and a RSC constrained-layer HDF/bitumen, ten-coat high gloss finish. Bass Reflex type loudspeakers (aka Ported, Vented or Reflex Port) have enclosures that uses a port, hole or vent cut into the cabinet. Ported designs are generally more efficient than the Sealed designs.
Port Position
Acoustic Energy AE1 40th Anniversary is a front-firing port speaker, which gives you more flexibility compared to rear firing speakers when you need to place it close against a wall or other surfaces.
Available colors
Acoustic Energy AE1 40th Anniversary is available in High Gloss Walnut and High Gloss Black.
Wall Mounting
AE1 40th Anniversary doesn't sport any built-in mounting bracket, so you need an external structure to mount it on walls.
Does the Acoustic Energy AE1 40th Anniversary come with a Grille?
AE1 40th Anniversary comes with magnetic grilles. The purpose of the grille is to protect the delicate driver elements from external impacts while still allowing the sound to pass as clearly as possible. Since the included grille of the AE1 40th Anniversary is magnetic type, it is very easy to put it on and off.
Recommended Accessories
Here is a list of accessories that we think you may need for the Acoustic Energy AE1 40th Anniversary.
- Speaker Cable and Connectors
- Vibration Isolators: IsoAcoustics isolators are our favorite isolators but you may find more affordable options too.
- Acoustic Panels and Treatments: Your room is as important as your stereo equipment so acoustic treatments goes a long way in improving the overall performance.
- Speaker Stands: Stands bring your bookshelf speakers to ideal height (rule of thumb is to have the tweeter level with your ear in your listening position), helps stability and acoustical isolation.
Official Product Page
Official manufacturer's product page for the Acoustic Energy AE1 40th Anniversary speaker can be found below:
Official Product Page for Acoustic Energy AE1 40th Anniversary