Description
The AE309 is a new slim-line floor-standing loudspeaker with compact dimensions, suitable for medium to large sized rooms. Similar to the AE300, the AE309 offers higher levels of performance and finish than its competition in the marketplace. The pedigree of the original AE1 is evident; custom drivers, inert cabinet, able to play for long periods of time at high level with no stress. 
The AE309 uses two latest generation 130mm mid-bass drive units. Featuring a brand new ceramic aluminum sandwich cone with an ultra-shallow profile and ultra-high force, long throw motor system, this new driver boasts improved dispersion, extended bass slam and overall power handling.
A new 28mm aluminum tweeter has been developed for the 300 Series which offers high power handling and a low fundamental resonance to reduce 
distortion. However, the main benefit to this new design is the excellent dispersion characteristics thanks to our Wide Dispersion Technology waveguides. The waveguides shape the acoustic output of the tweeter to match the woofer and provide a wider sweet-spot in your listening environment.
The inert, 18mm high density double side-wall MDF cabinet utilizes proprietary bracing technology derived from the award-winning Reference Series, to reduce cabinet coloration and allow the new transducers to breath freely within the listening environment. The slot shaped duct port on the rear of the speaker augments the bass output and has been carefully developed to reduce the effect of air turbulence with a clean, undistorted bass performance. The base of the cabinet is pre-loaded with an inert mass material which adds
damping and reduces cabinet coloration. The mass loading coupled with 8mm floor spikes help stability and provide a solid foundation for the drive units to operate without resonances from the cabinet interacting with the floor surface.
The result of this latest drive unit technology and enclosure design is a slim-line, powerful floor-standing loudspeaker for the discerning listener when refined audio quality coupled with elegant aesthetics are paramount.
Finished in a choice of Piano gloss black or satin real walnut wood veneer finishes, the AE309 will easily integrate within any home décor.
Sal Sorrentino, Audiophile Consumer, Feb 2021 –
As for the sound, the AE309’s are excellent. You’d be hard pressed to find a better speaker at this price point. They are clear and powerful, and have taken my system to the next level. Sal Sorrentino, Audiophile Consumer, Feb 2021
David Price, Hi Fi Choice Dec 2018 –
“If you spend your life listening to loudspeakers, you tend to notice patterns and floorstanding versions in a series can often introduce issues that aren’t found in a successful standmount – namely extra resonance and timing concerns. So, I am more than a little surprised to discover that the AE309 is more than just an AE300 standmount with an extra octave of bass added. This floorstander has been really well done – and the result is that it has far greater bass extension, but doesn’t lose anything in terms of the speed and attack that’s found on its baby brother. David Price, Hi Fi Choice Dec 2018
Michael Hamers, HiFi.NL Dec 2019 –
“The review period was too short in my opinion. Not because I could not listen to everything I wanted on the AE309s, but because they are very nice speakers that play far beyond their price point and therefore taste much more. They are interior-friendly, cheap, really neatly finished despite the low price and they sound really great. What’s not to like? Small point of criticism perhaps, the competition is fierce in this segment and it is damn difficult to really create something unique. But do put the Acoustic Energy AE309 on your list if you are in the market for new speakers with a budget of around $1899 per pair!” Michael Hamers, HiFi.NL Dec 2019