Acoustic Energy AE520 Mark II is a 3-way Passive Floor-standing speaker by Acoustic Energy. It was released in November 2026. It features a 1.1" Dome Tweeter, 1 x 5" Midrange and 2 x 6.5" carbon fibre cone Woofer.
Three-way tower: a 29 mm soft dome, a 125 mm carbon fibre midrange and two 165 mm (6.5-inch) carbon fibre bass drivers. 1,050 mm tall without spikes, 30 kg. Frequency range quoted at +/-6 dB. No US price yet.
The speaker has a frequency range of 28-28k Hz and a sensitivity of 92 dB.
Room Size Suitability
The size of the room where you plan to use the AE520 Mark II 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 | Bad |
| Small Room | Poor |
| Mid-size Room | Average |
| Large Room | Good |
| Very Large Room | Average |
(* 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 replaced the older AE520 with this model. Follow the link to read our detailed comparison of these models:
Compare AE520 Mark II vs AE520
Acoustic Energy's AE500 Mark II Series of Loudspeakers
AE520 Mark II is a member of Acoustic Energy's AE500 Mark II series of Passive speakers. Below you can see the main specs of these speakers.
See all 4 Acoustic Energy AE500 Mark II models compared »
Acoustic Energy AE500 Mark II Series Speakers
Frequency Response of the AE520 Mark II Speaker
AE520 Mark II has a Frequency response range of 28-28k Hz at ±6dB and Power Range of up to 200 watts. With a minimum frequency of 28 Hz, AE520 Mark II delivers deep bass that will likely satisfy most listeners, especially those who enjoy music. However, movie enthusiasts and music fans who prefer a full range of sound may still benefit from adding a subwoofer.
Here we have a comparison of how AE520 Mark II's Low frequency value compares with the average, max and min Low frequency values in its class.
Low Frequency
Floor-standing Speakers
Thinking about a subwoofer for the AE520 Mark II?
Crossover frequency of the AE520 Mark II?
AE520 Mark II is a 3-way speaker and its crossover frequency between the woofer and the midrange is set to 220 Hz and the crossover frequency between the midrange and the tweeter is set to 3600 Hz.
Impedance and Sensitivity
AE520 Mark II's nominal impedance level is
6 ohms and has a sensitivity of
92 dB.
Sensitivity
Floor-standing Speakers
Nominal Impedance of the 6 Ohms makes the Acoustic Energy AE520 Mark II a relatively difficult to drive speaker compared to more frequently found 8 ohms speakers from nominal Impedance perspective.
Sensitivity
92dB of the Acoustic Energy AE520 Mark II is considered a high sensitivity compared to average stereo speaker which makes AE520 Mark II an easy to drive from Sensitivity perspective. If you are planning to power your speaker with a Tube amp which are generally very low power, the AE520 Mark II will be a good choice. Work out how loud the AE520 Mark II plays in your room →
Running more than one pair from a single amplifier? Check the load it would present →
What amplifier does the AE520 Mark II need?
At normal listening levels in a medium room, about
6.3–100 W
per channel into 6 ohms.
Set your own conditions and we will rank every amplifier we cover.
Prefer to browse? See every integrated amplifier we cover.
Input Type
AE520 Mark II features type connectors.
AE520 Mark II External Dimensions and Weight
AE520 Mark II has external dimensions of (Height x Width x Depth) 41.3 x 7.3 x 14.2inch (1050.0 x 185.0 x 360.0mm ).
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 AE520 Mark II is approximately 666.0cm2 / 103.2inch2.
Millimetres are hard to picture, so here is the AE520 Mark II drawn to scale next to the Klipsch R-620F, the closest floor-standing 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.
Klipsch R-620F needs about 32% more floor or shelf area. AE520 Mark II is 29mm taller.
Full comparison: AE520 Mark II vs Klipsch R-620F ›
Find speakers that fit your shelf or alcove → · Work out where they should sit in the room →
WeightThe AE520 Mark II weighs 30.00kg / 66lbs per piece. Here is a comparison of how AE520 Mark II's weight compares with the average, max and min weights in its class.
Weight
All Floor-standing Speakers
Available colors
AE520 Mark II is available in Piano Gloss White, Piano Gloss Black and American Walnut wood veneer.
Does the AE520 Mark II come with a Grille?
AE520 Mark II 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 AE520 Mark II 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 AE520 Mark II.
Official Product Page
Official manufacturer's product page for the Acoustic Energy AE520 Mark II speaker can be found below:
Official Product Page for AE520 Mark II