In this review, we will be comparing specifications of S20 and R-51M, two Bookshelf cameras from Polk Audio and Klipsch.
Let's have a brief look at the main features of Polk S20 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 Polk S20 and Klipsch R-51M compares and hopefully end up with enough arguments to decide which one is better for you.
Both S20 and R-51M are 2-way speakers. S20 features a 1" Terylene high-res dome Tweeter and 1 6.5" Mica-reinforced polypropylene Woofer . On the other hand, R-51M features a 1" Tractrix Horn Tweeter and 1 5.25" Copper-spun IMG Woofer with a Crossover frequency at 1660 Hz.
S20 has a frequency range of 39-40k Hz whereas R-51M has a frequency range of 62-21k Hz.
Impedance and Sensitivity
S20 and R-51M has the same Impedance of 8 ohms but where they differ is the sensitivity levels. S20 sensitivity is rated at 88 dB and R-51M's is at 93 dBd B.
S20 has a power range of 20-125 watts RMS whereas R-51M has a power range of 85 watts.
Input Type and Bi-Amping / Bi-Wiring
S20 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 S20 and R-51M features dual binding post speaker terminals for bi-amping or bi-wiring.