In this review, we will be comparing specifications of Q150 and R-51M, two Bookshelf speakers from KEF and Klipsch.
Let's have a brief look at the main features of KEF Q150 and Klipsch R-51M before getting into our more detailed comparison.
Let's read on the following sections in order to better understand in detail how KEF Q150 and Klipsch R-51M compares and hopefully end up with enough arguments to decide which one is better for you.
Both Q150 and R-51M are 2-way speakers. Q150 features a 1" Dome Tweeter , a " Midrange and 1 x 5.25" Aluminum Woofer with a Crossover frequency at 2500 Hz. On the other hand, R-51M features a 1" Tractrix Horn Tweeter , a " Midrange and 1 x 5.25" Copper-spun IMG Woofer with a Crossover frequency at 1660 Hz.
Q150 has a frequency range of 51-28k Hz whereas R-51M has a frequency range of 62-21k Hz.
Impedance and Sensitivity
Q150 and R-51M has the same Impedance of 8 ohms but where they differ is the sensitivity levels. Q150 sensitivity is rated at 86 dB and R-51M's is at 93 dB. This 7 dB difference makes Klipsch R-51M 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 R-51M has a power range of 85 watts.
Input Type and Bi-Amping / Bi-Wiring
Q150 features Single Gold Plated Binding Posts - 5-way type posts and R-51M has a Single Gold Plated Binding Posts - 5-way type posts. None of these speakers feature b-amping/bi-wiring.
Cabinet Type and Port Position
Both Q150 and R-51M have a back firing ports.
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 Klipsch R-51M's external dimensions. KEF Q150 has external dimensions of 303.0mm x 180.0mm x 278.0mm ( 11.9inch x 7.0inch x 10.9inch ) whereas Klipsch R-51M has external dimensions of 338.0mm x 178.0mm x 215.0mm ( 13.3inch x 7.0inch x 8.4inch ) .
Klipsch R-51M is 2mm narrower and 63mm less deeper than KEF Q150 but it is also 35mm taller.
Below you can see the front view size comparison of KEF Q150 and Klipsch R-51M.