Reasons to choose Klipsch Reference R-610F over Klipsch Reference R-51M
Sensitivity 94 dB vs 93 dB
Woofer Size 6.5 inches vs 5.25 inches
Low Frequency Response 45 Hz vs 62 Hz

Reasons to choose Klipsch Reference R-51M over Klipsch Reference R-610F

Height 338mm vs 942mm
Base Surface Area 382cm2 vs 881cm2
Price per pair* 359USD vs 778USD
Klipsch R-610F vs Klipsch R-51M Specs Table
General Klipsch Reference R-610F Klipsch Reference R-51M
Brand Klipsch Klipsch
Speaker Type Floor-standing speaker Bookshelf speakers
Power Range up to 85 watts Up to 85 watts
Sensitivity 94 dB 93 dB
Impedance 8 ohms 8 ohms
Frequency Response 45-21k Hz 62-21k Hz
Drivers
Woofer Quantity 1 1
Woofer Size 6.5" 5.25"
Woofer Composition Copper-spun IMG Copper-spun IMG
Woofer Surround Material Rubber Rubber
Tweeter Size 1.0" 1"
Tweeter Type n/a Tractrix Horn
Aimable Tweeter No No
Midrange Driver No No
Crossover Frequency n/a 1660Hz
Firing Direction rear rear
Physical Specs
Height 942.0mm (37.1") 338.0mm (13.3")
Width 239.0mm (9.4") 178.0mm (7")
Depth 369.0mm (14.5") 215.0mm (8.5")
Weight 16.36kg (36lbs) 5.00kg (11lbs)
Enclosure Bass Reflex Bass Reflex
Finish MDF/Wood-grain vinyl MDF/Wood-grain vinyl
Available Colors Black Black
Mounting Bracket No No
Recommended Stand Height n/a 24-28"
Grille Yes Yes
Moisture Resistancy No No
Connections
Biamp Inputs No No
Other
Parts Warranty 5 Years 5 Years
Labor Warranty 5 Years 5 Years