In this review, we will be comparing specifications of R-51M and RP-600M, two Bookshelf speakers by Klipsch.
Let's have a brief look at the main features of Klipsch R-51M and Klipsch RP-600M 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 Klipsch RP-600M compares and hopefully end up with enough arguments to decide which one is better for you.
Drivers
Both R-51M and RP-600M are 2-way speakers. 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. On the other hand, RP-600M features a 1" Tractrix Horn Tweeter , a " Midrange and 1 x 6.5" Cerametallic Woofer with a Crossover frequency at 1500 Hz.
Frequency Response
R-51M has a frequency range of 62-21k Hz whereas RP-600M has a frequency range of 45-25k Hz.
Low Frequency
Bookshelf Speakers
High Frequency
Bookshelf Speakers
Impedance and Sensitivity
R-51M and RP-600M has the same Impedance of 8 ohms but where they differ is the sensitivity levels. R-51M sensitivity is rated at 93 dB and RP-600M's is at 96 dB. This 3 dB difference makes Klipsch RP-600M a more sensitive speaker compared to Klipsch R-51M, hence will play louder with the same amount of watts.
Sensitivity
Bookshelf Speakers
Power Range
R-51M has a power range of 85 watts RMS whereas RP-600M has a power range of 100 watts.
Input Type and Bi-Amping / Bi-Wiring
RP-600M features Dual binding posts/bi-wire/bi-amp posts which makes bi-amping or bi-wiring possible. R-51M has a Single Gold Plated Binding Posts - 5-way which doesn't feature bi-amping/bi-wiring.
Cabinet Type and Port Position
Both R-51M and RP-600M have a back firing ports.
Physical Specs
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 Klipsch R-51M's and Klipsch RP-600M's external dimensions. Klipsch R-51M has external dimensions of 338.0mm x 178.0mm x 215.0mm ( 13.3inch x 7.0inch x 8.4inch ) whereas Klipsch RP-600M has external dimensions of 399.0mm x 202.0mm x 301.0mm ( 15.7inch x 7.9inch x 11.8inch ) .
Klipsch RP-600M is clearly the larger of the two speakers. Its body is 24mm wider, 61mm taller and 86mm deeper than Klipsch R-51M.
Below you can see the front view size comparison of Klipsch R-51M and Klipsch RP-600M.
Comparison image of Klipsch R-51M and Klipsch RP-600M Size and External Dimensions