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Martin Logan Motion 20 vs Elac BS 73 Comparison

Comparison and Difference Between

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Brand and Model Specifications

Information about the brand, model release date.

ManufacturerMartin LoganElac
ModelMotion 20BS 73
Release Date20122014
What Hi-Fi? Rating -
Amazon Rating

Technical Specs

Technical characteristics of the speakers.

Amplification TypePassivePassive
Crossover Type3-Way2-Way
Enclosure typeBass ReflexBass Reflex
Frequency Range (+/-3 dB)[Hz]46 - 2500045 - 28000
Frequency Range (-6dB)[Hz]--
Maximum SPL [dB]--
Sensitivity (2,83 V/1 m)[dB]9087.5
Nominal Impedance (Ohms)44
THD (Total Harmonic Distortion)--
Recommended Amplifier Power [W]20-20020-120
Crossover Frequency [Hz]26002800
Bass Reflex Tuning Frequency [Hz]--
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 × 25 mm dome
Mid/Bass Drivers: 1 × 150 mm cone

InputsSingle WireSingle Wire
Magnetic ShieldingNoNo

Placements and Distances

Where and how to put them.

Form FactorFloorShelf, Stand
Distance from Wall [cm]1515

Dimensions and Weight

Physical characteristics of the speakers (without stands).

Length~6.8 in
~172.72 mm
~17.27 cm
~ 6,69 in
~152.4 mm
~15.24 cm
Width~11.7 in
~297.18 mm
~29.72 cm
~11.14 in
~282.96 mm
~28.3 cm
Height~36.6 in
~929.64 mm
~92.96 cm
~11.18 in
~283.97 mm
~28.4 cm
Weight (Single Speaker)~37 lb
~16782.92 g
~16.78 kg
~25.8 lb
~11702.68 g
~11.7 kg
Shipping Weight~39.2 lb
~17780.82 g
~17.78 kg
~25.8 lb
~11702.68 g
~11.7 kg

Colors and Accessories

List of available colors and optional accessories.

  • High-gloss piano black
  • Black Matt
  • White Matt

  • LS 70 II Stand
  • LS 30 Stand
Detachable GrillesNoNo

Price and Warranty

Satisfaction is (not) guaranteed.

Warranty5 Years3 Years
Amazon Price


Small print and stuff...

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