In this review, we will be comparing Q150 and Debut 2.0 B6.2, two Passive Bookshelf speakers from KEF and ELAC. Let's have a brief look at the main features of KEF Q150 and ELAC Debut 2.0 B6.2 first before getting into our more detailed comparison.
In the following sections, we will get into details in order to better understand how KEF Q150 and ELAC Debut 2.0 B6.2 compares and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.
**This post contains affiliate links and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.
Both Q150 and Debut 2.0 B6.2 are 2-way speakers. Q150 features a 1" vented aluminum Dome Tweeter and 1 x 5.25" Aluminum Woofer with a Crossover frequency at 2500Hz. On the other hand, Debut 2.0 B6.2 features a 1" Cloth Soft-dome Tweeter and 1 x 6.5" Woven Aramid-Fiber Woofer with a Crossover frequency at 2200Hz.
Q150 has a frequency range of 51-28k Hz whereas Debut 2.0 B6.2 has a frequency range of 44-35k Hz. With a minimum frequency of 44Hz, the Debut 2.0 B6.2 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 under Bookshelf class in our database.
Impedance and Sensitivity
Q150 is a 8 ohms speaker compared to Debut 2.0 B6.2 which has a nominal impedance of 6 ohms. These two speakers also have different sensitivity levels. Q150 sensitivity is rated at 86 dB and Debut 2.0 B6.2's is at 87 dB. This 1 dB difference makes ELAC Debut 2.0 B6.2 a more sensitive speaker compared to KEF Q150, hence will play louder with the same amount of watts.
Q150 has a power range of 10-100 watts RMS whereas Debut 2.0 B6.2 has a power range of 120 watts.
Input Type and Bi-Amping / Bi-Wiring
Q150 features 5-Way Metal post type posts and Debut 2.0 B6.2 has a 5-Way Metal post type posts. None of these speakers feature bi-amping/bi-wiring.
Cabinet Type and Port Position
Q150 has a rear firing port whereas Debut 2.0 B6.2 has a front firing ports. ELAC Debut 2.0 B6.2's front-firing port gives more flexibility in placement in regards to proximity to walls compared to KEF Q150 with its rear-firing port.
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 KEF Q150's and ELAC Debut 2.0 B6.2's external dimensions. KEF Q150 has external dimensions of 303.0 x 180.0 x 278.0mm ( 11.9 x 7.0 x 10.9inch) whereas ELAC Debut 2.0 B6.2 has external dimensions of 375.0 x 195.0 x 268.0mm ( 14.7 x 7.6 x 10.5inch) .
KEF Q150 is 15mm narrower and 72mm shorter than ELAC Debut 2.0 B6.2 but it is also 10mm deeper.
Below you can see the front view size comparison of KEF Q150 and ELAC Debut 2.0 B6.2 in scale.
Here is an another comparison that shows both speakers on a BDI Octave Media Cabinet, next to a standard size amplifier and turntable in scale: