Martin Logan Motion 20 vs KEF Reference 1 Comparison

Comparison and Difference Between

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Brand and Model Specifications

Information about the brand, model release date.

Manufacturer	Martin Logan	KEF
Model	Motion 20	Reference 1
Photo
Release Date	2012	2014
HifiSpecs Rating		-
Amazon Rating
Price	Check Price	Check Price

Technical Specs

Technical characteristics of the speakers.

Amplification Type	Passive	Passive
Crossover Type	3-Way	3-Way
Enclosure type	Bass Reflex	Bass Reflex
Frequency Range (+/-3 dB)[Hz]	46 - 25000	45 - 28000
Frequency Range (-6dB)[Hz]	-	40 - 35000
Maximum SPL [dB]	-	111
Sensitivity (2,83 V/1 m)[dB]	90	85
Nominal Impedance (Ohms)	4	8
THD (Total Harmonic Distortion)	-	0.4%
Recommended Amplifier Power [W]	20-200	50 - 300
Crossover Frequency [Hz]	2600	450
Bass Reflex Tuning Frequency [Hz]	-	38
Driver Units	Tweeter: 1″ × 1.4″ (2.6cm × 3.6cm) Folded Motion Transducer with 5.25″ × 1.75″ (13.3cm × 4.4cm) diaphragm Mid/Bass Drivers: Two 5.5″ (14cm) aluminum cone woofers in a non-resonant asymmetrical chamber format.	Tweeter: 1″ Aluminum Midrange: 5″ Aluminum Woofer: 6.5″ Aluminum
Connectivity	Wired	Wired
Inputs	Single Wire	Single Wire
Outputs	-	None
Magnetic Shielding	No	No

Placements and Distances

Where and how to put them.

Form Factor	Floor	Stand
Distance from Wall [cm]	15	20

Dimensions and Weight

Physical characteristics of the speakers (without stands).

Length	~6.8 in ~172.72 mm ~17.27 cm	~14.1 in ~358.14 mm ~35.81 cm
Width	~11.7 in ~297.18 mm ~29.72 cm	~8.3 in ~210.82 mm ~21.08 cm
Height	~36.6 in ~929.64 mm ~92.96 cm	~17.4 in ~441.96 mm ~44.2 cm
Weight (Single Speaker)	~37 lb ~16782.92 g ~16.78 kg	~40.1 lb ~18189.05 g ~18.19 kg
Shipping Weight	~39.2 lb ~17780.82 g ~17.78 kg	~45 lb ~20411.66 g ~20.41 kg

Colors and Accessories

List of available colors and optional accessories.

Colors	High-gloss piano black	Gloss White High Gloss Piano Black Rosewood Walnut
Accessories	–	Manual Rubber Bumpers
Detachable Grilles	No	Yes

Price and Warranty

Satisfaction is (not) guaranteed.

Warranty	5 Years	5 Years
Amazon Price	Check Price	Check Price

Review Comparison

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Available Reviews

Martin Logan Motion 20 Review

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