Which is better for movies?

The R-600F, for the front left and right channels, because it reaches 38 Hz and plays louder with less amplifier power. Use the R-51M as surrounds, where deep bass matters less.

Do I need a subwoofer with the R-51M?

Yes for movies and most rock or electronic music. Its response stops at 62 Hz, so a subwoofer fills in the low bass the R-600F covers down to 38 Hz.

Is the R-600F worth the extra money?

For a main stereo or home theater pair, yes. Two R-600F cost about $700 versus $289.99 for the R-51M pair, but you get deeper bass, higher sensitivity and no stands.

Which is easier to drive?

The R-600F. At 96 dB sensitivity it needs far less power than the 93 dB R-51M to reach the same volume, so a small receiver works fine.

Can I mix them in one system?

Yes. Both use the same 1-inch aluminum LTS tweeter and 90x90 Tractrix horn, so they voice similarly. R-600F up front and R-51M as surrounds is a common pairing.

Both are passive speakers with no electronics to wear out. The R-51M carries a stated 5-year warranty; the R-600F's cabinet and drivers are similarly durable, but check the warranty terms at the store.

Klipsch Reference R-600F Floor-Standing Speaker vs Klipsch R-51M Bookshelf Speakers

Buy the R-600F if you want full-range floor-standing sound for music and movies and have floor space; it reaches down to 38 Hz and its 96 dB sensitivity means even a modest receiver drives it loud. Buy the R-51M pair if you are building a surround or desktop setup on a tighter footprint or budget. The price gap is small: $349.97 at Curacao for the R-600F as of November 4, 2026, versus $289.99 at Amazon for the R-51M pair as of November 4, 2026.

Today the Klipsch R-51M Bookshelf Speakers costs $59.98 less at its best price.

Ask our shopping agent