(1 customer review)

Acoustic Energy AE520 Floor-Standing Tower / pr.

$ 4,990.00


The AE520 is a powerful, slim-line, floor-standing loudspeaker which builds on the AE500 and AE509 models to firmly establish itself as the brand’s new flagship, featuring multi-driver design, imposing size and performance.

The AE520 features two dedicated 5″ mid-range drivers, three low frequency drivers and a 1″ tweeter – all fashioned from carbon fiber to provide perfect tonal matching across the frequency range.

The two dedicated 5″ carbon fiber mid-drivers include new oversized 1.4″ voice coils for low thermal compression and optimum motor force factor. Both are mounted within their own dedicated sealed enclosure whilst the three dedicated low frequency drivers are reflex loaded by a large rear facing rectangular port. Designed to match the pistonic power and accuracy of our legendary ceramic aluminum drivers, these new units offer much improved self-damping for a smoother, more transparent sound.

Vertical directivity has been optimized to provide excellent vertical coverage whilst reducing the energy otherwise wasted on ceiling and floor reflections when compared to traditional designs. 

The slim-line cabinets are finished in Piano Gloss Black, Piano Gloss White or American Walnut wood veneer finishes. Solid Aluminum bars are supplied to ensure rigid floor-coupling and maximum stability, whilst the stiffness of the metal structure reduces the room to speaker interaction.

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Our 500 Series tweeter features a brand new 1″ carbon fiber dome. Carbon fiber is much lighter and better damped than other typical hard dome materials and provides a lightning fast, natural sound which will surprise the listener with its neutrality. The new cast aluminum WDT waveguide on the high frequency driver is positioned close to the mid/bass driver for optimum dispersion and is extremely stiff to reduce vibration being passed to the tweeter, ensuring sweet, clear and natural highs.


The 125mm mid/bass driver includes a new oversized 1.4″ voice coils for low thermal compression and very high motor force factor, to provide a highly dynamic yet controlled bass response. The woofer has an optimized motor and suspension system for maximum linearity and lowest distortion ensuring mid-range definition, whilst the lightweight nature of the carbon fiber cone material increases transient speed and clarity.


The crossovers use high voltage polypropylene film wound capacitors and air core inductors at critical locations for optimum dispersion through a smaller acoustic source size within the crossover region.

The AE509 is a Mid Tweeter Mid/Bass (MTM) driver layout and both models use a 2 way crossover, while the AE520 utilizes a 3 way design.


These unique drivers are housed in our new .71″ thick Resonance Suppression Composite (RSC) cabinets, evolved from the prestigious Reference Series and featuring the same constrained layer composite to greatly reduce cabinet acoustic radiation, which would otherwise color the sound.


Additional information

Weight 66 lbs
Dimensions 12.6 × 7.3 × 44.5 in


5″ carbon fiber cones
1″ carbon fiber dome
30Hz – 28kHz (+/- 6dB)
90dB Efficient
113dB Dynamic Range
300w Power Handling
373Hz/2.8kHz Crossover Points
6ohms Impedance
3 way Type
Slim, cloth magnetic fit
44.5″ x 7.3″ x 12.6″ (HxWxD, exc. spikes)
66 lbs (each)
Piano Gloss White, Piano Gloss Black and American Walnut wood veneer

1 review for Acoustic Energy AE520 Floor-Standing Tower / pr.

  1. David Price, Hi Fi Choice, Oct 2020

    “Overall this is the most impressive new flagship floorstander. It’s an excellent all-rounder with no obvious vices and a lot to be proud of. Tonally it’s lovely; it has richness that you don’t often hear from modern speakers. The AE520 is not one of those weedy, anemic-sounding floor standers that have you wondering why you didn’t buy the stand mount version at half the price. Instead, you get a large, muscular and full-range sound that has weight, grunt and go.” David Price, Hi Fi Choice, Oct 2020

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