In this review, we will be comparing specifications of R-51M and S15, two Bookshelf cameras from Klipsch and Polk Audio.
Let's have a brief look at the main features of Klipsch R-51M and Polk S15 before getting into our more detailed comparison.
Let's read on the following sections in order to better understand in detail how Klipsch R-51M and Polk S15 compares and hopefully end up with enough arguments to decide which one is better for you.
Both R-51M and S15 are 2-way speakers. R-51M features a 1" Tractrix Horn Tweeter and 1 5.25" Copper-spun IMG Woofer with a Crossover frequency at 1660 Hz. On the other hand, S15 features a 1" Terylene Dome Tweeter and 1 5.25" Mica-reinforced polypropylene Woofer with a Crossover frequency at 2500 Hz.
R-51M has a frequency range of 62-21k Hz whereas S15 has a frequency range of 50-40k Hz.
Impedance and Sensitivity
R-51M and S15 has the same Impedance of 8 ohms but where they differ is the sensitivity levels. R-51M sensitivity is rated at 93 dB and S15's is at 88 dBd B.
R-51M has a power range of 85 watts RMS whereas S15 has a power range of 20-100 watts.
Input Type and Bi-Amping / Bi-Wiring
R-51M features Pair of Binding Posts - Gold Plated type posts and S15 has a Pair of Binding Posts - Gold Plated type posts. None of these speakers feature b-amping/bi-wiring.
Cabinet Type and Port Position
Both R-51M and S15 features dual binding post speaker terminals for bi-amping or bi-wiring.