In this review, we will be comparing two different type of speakers by KEF. KEF Q150 is a Bookshelf speaker whereas the Q650c is a Center Channel speaker.
Let's have a brief look at the main features of KEF Q150 and KEF Q650c 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 KEF Q650c compares and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.
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Both Q150 and Q650c 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, Q650c features a 1" vented aluminum Dome Tweeter and 2 x 6.5" aluminum Woofer with a Crossover frequency at 2500Hz.
Q150 has a frequency range of 51-28k Hz whereas Q650c has a frequency range of 64-28k Hz. With a minimum frequency of 51Hz, the Q150 can go significantly deeper on the low side and provide stronger bass compared to the Q650c's min frequency of 64Hz.
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 and Q650c has the same Impedance of 8 ohms but where they differ is the sensitivity levels. Q150 sensitivity is rated at 86 dB and Q650c's is at 87 dB. This 1 dB difference makes KEF Q650c 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 Q650c has a power range of 15-150 watts.
Input Type and Bi-Amping / Bi-Wiring
Q150 features Binding post type posts and Q650c has a Binding post type posts. None of these speakers feature bi-amping/bi-wiring.
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 KEF Q650c'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 KEF Q650c has external dimensions of 212.0 x 631.0 x 304.0mm ( 8-5/16 x 24-13/16 x 11-15/16inch) .
KEF Q150 is 451mm narrower and 26mm less deeper than KEF Q650c but it is also 91mm taller.
Below you can see the front view size comparison of KEF Q150 and KEF Q650c in scale.