In this review, we will be comparing AE300 and Q150, two Passive Bookshelf speakers from Acoustic Energy and KEF. Let's have a brief look at the main features
of AE300 and KEF Q150 first before getting into our more
detailed comparison.
What size room are the AE300 and KEF Q150 speakers good for?
The size of the room in which you are planning to use these loudspeakers is an important decision factor. Here we have compared their suitability to various sizes of environments considering their size and max power parameters:
In the following sections, we will get into more detail in order to better understand how the AE300 and KEF Q150 compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.
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through my links. As an Amazon Associate I earn from qualifying purchases.
Drivers
Both AE300 and Q150 are 2-way speakers.
| Driver |
AE300 |
KEF Q150 |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1.1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 5.2-inch
|
1 x 5.25-inch
|
AE300 features a 1.1" aluminium dome with waveguide Tweeter and 1 x 5.2" ceramic aluminium sandwich Woofer with a Crossover frequency at 2800Hz. On the other hand, the Q150 features a 1" vented aluminum Dome Tweeter and 1 x 5.25" Aluminum Woofer with a Crossover frequency at 2500Hz.
Frequency Response
AE300 has a frequency range of 45Hz - 30kHz whereas Q150 has a frequency range of 51-28k Hz. With a minimum frequency of 45Hz, the AE300 can go significantly deeper on the low side and provide stronger bass compared to the Q150's min frequency of 51Hz.
Below graphs depict how these two speakers compare with the max, min and average values of the Min and Max Frequencies of other speakers in the Bookshelf class in our database.
Low Frequency
Bookshelf Speakers
High Frequency
Bookshelf Speakers
None of these speakers achieves full range experience which is commonly agreed as 20Hz-20kHz. In order to achieve lower lows / deeper bass, we recommend you pair these with a subwoofer. Visit our Powered Subwoofers section to find out more about the available options.
Impedance and Sensitivity
AE300 is a 6 ohms speaker compared to the Q150 which has a nominal impedance of 8 ohms.
On the other hand, they have the same sensitivity of 86 dBdB.
Sensitivity
Bookshelf Speakers
Power Range
Power
range is the range of input power in watts RMS that a loudspeaker is designed to handle. While using an amplifier within this range ensures the nominal performance , inputting a power that is higher than the max wattage can result in a damaged speaker.
Keep in mind that a higher max power handling value doesn't necessarily make that a louder speaker
compared to a lower max handling speaker. Loudness or the sound level is also impacted by parameters
such as Impedance, sensitivity and system efficiencies.
Cabinet Type and Port Position
Both AE300 and Q150 have rear firing ports. Rear ported speakers generally need more room between the backside of the speaker and the wall compared to sealed and front/bottom ported speakers. Placing the speakers too close to the walls may cause the bass to sound boomy.
If you are limited in space and can't get the speakers away from the backwall, check our Speakers with Front Firing Ports page.
KEF Q150 Port
Physical Specs
Size of a speaker can sometimes become an important decision factor due to space constraints or in some cases purely for esthetic reasons. In this section, we are going to compare AE300's and KEF Q150's external dimensions. AE300 has external dimensions of 300.0 x 175.0 x 260.0mm ( 11.4 x 6.9 x 10.2inch) whereas KEF Q150 has external dimensions of 303.0 x 180.0 x 278.0mm ( 11.9 x 7.0 x 10.9inch) .
KEF Q150 is clearly the larger of the two speakers. Its body is 5mm wider, 3mm taller and 18mm deeper than AE300.
Base Surface Area Comparison
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base surface area of the AE300 is approximately 455.0cm2 / 70.5inch2 and base area of the KEF Q150 is approximately 500.4cm2 / 77.6inch2. The AE300 requires 9% less surface area than the Q150 which gives it a small advantage on placement in tight spaces.
Weight Comparison The weight of a loudspeaker can become an important factor if you need to move and reposition the unit often. Weight of a speaker can also "sometimes" be an indicator of the rigidity of the enclosure and the quality of the internal components used. The AE300 weighs 6.50kg / 14.3lbs and the KEF Q150 weighs 5.60kg / 12.3lbs. This makes the AE300 16% heavier than the Q150.
Here is a comparison of how AE300 and Q150's weights compare with the average, max and min weights in Passive Bookshelf class.
Weight
All Bookshelf Speakers
What's in the Box of KEF Q150?
Here are the items that come with the Q150:
2 Bookshelf loudspeakers 2 Foam port plugs 8 Self-adhesive rubber feet Owner's Manual Warranty Registration Card
 Low Frequency Response |
45 Hz
vs
51 Hz
|
Generates deeper bass |
 High Frequency Response |
30k Hz
vs
28k Hz
|
Generates higher frequency |
 Height |
300mm
vs
303mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
455cm2 (175x260mm)
vs
500cm2 (180x278mm)
|
Takes less floor space |
 Nominal Impedance |
8 ohms
vs
6 ohms
|
Less selective with amplifiers |
| Woofer Size |
5.25 inches
vs
5.2 inches
|
Larger woofer |
 Price per pair* |
600USD
vs
1099USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
Acoustic Energy AE300 |
KEF Q150 |
| Brand |
Acoustic Energy |
KEF |
| Speaker Type |
Bookshelf speakers |
Bookshelf speakers |
| Power Range |
up to 100 watts |
10-100 watts |
| Sensitivity |
86 dB |
86 dB |
| Impedance |
6 ohms |
8 ohms |
| Impedance |
n/a |
3.7 ohms |
| Frequency Response |
45Hz - 30kHz |
51-28k Hz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
5.2" |
5.25" |
| Woofer Composition |
ceramic aluminium sandwich |
Aluminum |
| Woofer Surround Material |
n/a |
Rubber |
| Tweeter Size |
1.1" |
1" |
| Tweeter Type |
dome with waveguide |
Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
2800Hz |
2500Hz |
| Firing Direction |
rear |
rear |
Physical Specs |
|
|
| Height |
300.0mm (11.8") |
303.0mm (11.9") |
| Width |
175.0mm (6.9") |
180.0mm (7.1") |
| Depth |
260.0mm (10.2") |
278.0mm (10.9") |
| Weight |
6.50kg (14.3lbs) |
5.60kg (12.3lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
high density MDF |
MDF/Vinyl-wrapped |
| Available Colors |
Piano Gloss White, Piano Gloss Black, Real Walnut wood veneer |
Black, Walnut, White |
| Mounting Bracket |
|
No |
| Recommended Stand Height |
n/a |
18-24" |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
n/a |
No |
Other |
|
|
| Parts Warranty |
|
5 Years |
| Labor Warranty |
|
5 Years |