Reasons to choose MartinLogan Motion 30i over MartinLogan Motion 20i
Sensitivity 91 dB vs 90 dB
Height 177mm vs 905mm
Price per pair* 900USD vs 2000USD

Reasons to choose MartinLogan Motion 20i over MartinLogan Motion 30i

Woofer Size 5.5 inches vs 5.25 inches
Number of Woofers 2 vs 1
Low Frequency Response 46 Hz vs 65 Hz
Bi-Amping and Bi-Wiring Yes vs No
Base Surface Area 537cm2 vs 1188cm2
MartinLogan 30i vs MartinLogan 20i Specs Table
General MartinLogan Motion 30i MartinLogan Motion 20i
Brand MartinLogan MartinLogan
Speaker Type Center channel speaker Floor-standing speaker
Power Range 20-200 watts 20-200 watts
Sensitivity 91 dB 90 dB
Impedance 4 ohms 4 ohms
Frequency Response 65-25k Hz 46-25k Hz
Drivers
Woofer Quantity 1 2
Woofer Size 5.25" 5.5"
Woofer Composition Aluminum Aluminum
Woofer Surround Material Rubber Rubber
Tweeter Size 1.0 x 1.4" 1.0 x 1.4"
Tweeter Type Folded Motion Folded Motion
Aimable Tweeter No No
Midrange Driver No No
Crossover Frequency 400Hz and 2600Hz 500Hz and 2600Hz
Firing Direction rear rear
Suggested Break-in Period Allow 72 hours of break-in at 90 dB Allow 72 hours of break-in at 90 dB
Physical Specs
Height 177.0mm (7") 905.0mm (35.6")
Width 423.0mm (16.7") 175.0mm (6.9")
Depth 281.0mm (11.1") 307.0mm (12.1")
Weight 8.18kg (18lbs) 15.00kg (33lbs)
Enclosure Bass Reflex Bass Reflex
Finish MDF/Lacquer MDF/Lacquer
Available Colors White Gloss Black, Matt White, Red Walnut
Grille Yes Yes
Moisture Resistancy No No
Connections
Biamp Inputs No Yes
Other
Parts Warranty 5 Years 5 Years
Labor Warranty 5 Years 5 Years