R-51M is a 2-way Passive Bass Reflex Bookshelf speaker by Klipsch. It features a 1" Tractrix Horn Tweeter and 1 x 5.25" Copper-spun IMG Woofer.
Klipsch R-51M is the latest member of Klipsch's Reference (R) series of speakers. Below you can see the main specs of these speakers.
Klipsch Reference (R) Series History
Frequency Response
Klipsch R-51M has a Frequency response range of 62-21k Hz at ±3dB and Power Range of 85 watts. At a minimum frequency of 62 Hz, it is hard to expect a strong bass response from R-51M so depending on your intended use, using a subwoofer will significantly help to widen the response range.
Crossover frequency for R-51M is at 1660Hz.
Low Frequency
Bookshelf Speakers
High Frequency
Bookshelf Speakers
The Bookshelf model with the lowest Low Frequency level in our database is Wharfedale Elysian 2, with bass extending down to impressive 35 Hz.
On the other hand, model with the highest Frequency is Sony SS-CS5 with its high frequency limit of 50 kHz.
Impedance and Sensitivity
Klipsch R-51M's nominal impedance level is 8 ohms and has a sensitivity of 93 dB.
Sensitivity
Bookshelf Speakers
Input Type
R-51M features Single Gold Plated Binding Posts - 5-way type connectors. Bi-amping and Bi-wiring is not possible.
Cabinet type and Materials
Klipsch R-51M has a Bass Reflex type cabinet and MDF/Wood-grain vinyl finish. Klipsch R-51M is a back-firing port speaker so you have to make sure you leave enough space between the back of the speaker and wall or bookshelf so that it has room to breathe.
Available colors
Klipsch R-51M is available in Black.
Weight and Dimensions
Klipsch R-51M has external dimensions of (Height x Width x Depth) 13.3inch x 7.0inch x 8.4inch (338.0mm x 178.0mm x 215.0mm ). Each speaker weighs 11lbs (5.00kg ).
To have a better perspective on the real life size of Klipsch R-51M, let's compare it with a standard size Compact Disc which has a diameter of 4.7inch (120mm).
Klipsch R-51M Speaker Size Compared to a Compact Disc
Wall Mounting
R-51M doesn't sport any built-in mounting bracket so you need an external structure to mount on walls.
Grille
R-51M comes with magnetic removable grillesblack.
What's in the Box?
2 Bookshelf loudspeakers 2 Grilles (installed) 8 Self-adhesive rubber feet Quick Setup Guide Important Safety Instructions Warranty Information User's Manual
Download User Manual for Klipsch R-51M
Official Brochure
Official Brochure for Klipsch R-51M
Official Product Page
Official Product Page for Klipsch R-51M
Warranty
5 Years of parts warranty and 5 Years of labor warranty is generally provided by the manufacturer.