R30...
Driver Complement
Mid/Woofer 1 - 6-1/2" Diameter (16.51cm)
Dynamic Balance Polymer composite cone, shielded
Tweeter 1 - 3/4" Diameter (1.91cm)
Dynamic Balance silk/polymer composite dome, shielded
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Electrical
Overall Frequency Response 45Hz - 24kHz
Lower -3dB Limit 55Hz
Upper -3dB Limit 20kHz
Nominal Impedance 8 ohms
Recommended Amplifier Power 20 - 150 w/channel
Efficiency 89 dB
Inputs 5-way binding posts
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Dimensions
Cabinet Size 33-3/4" H x 7-3/4" W x 9" D
(85.72cm H x 19.68cm W x 22.86cm D)
Enclosure Type Vented
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Shipping/Other
Total Shipping Weight 32.00 lbs.
Speaker Warranty Five years parts and labor, limited
Accessories (comes with) Carpet spikes
Still this is a good deal, Nothing really beats a Silk Dome tweeter!

Smooth Sound.
Of cours the R50's use the same tweeter but two Mid Drivers. I say if you have a good sub you won't miss much between R50 vs R30.