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Dimensions
Hailun HL121 - Height:
122cm X Width: 151.5cm X Depth: 60.5cm
Yamaha LU90 - Height: 109cm
X Width: 148cm X Depth: 53.5cm
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Piano string length known as speaking length
A very important part of piano scale design - longer
string promotes richer and more powerful tone
Hailun HL121
- The longest bass string is 120cm. This
promote better singing tone and powerful bass
Yamaha LU90 - The
longest bass string
is 110cm. This promote thin sound and weak in the bass
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Action and Hammer
Underfelt is designed to provide an amount of compression outwards to keep
the hammer in shape and ensure it rebounds when it hits the strings
Hailun HL121
- Full-sized Direct-Blow action type for better control and speed.
All-wood action design and German/Japanese hammers with underfelt for
durability and promotes better tone quality and power
Yamaha LU90 -
Compressed-sized Direct-Blow action type and Japanese hammers with no underfelt. The parts of the action are
smaller and meet greater angles and not optimized for good
leverage. This results in more friction and wears as well as slow down the ability to repeat notes quickly
as compare to the taller Yamaha models
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Soundboard
Straight uniform grain contributes to greater stiffness and better tone
amplification
Hailun HL121 - Tapered
Siberian solid spruce 'Grade A', very straight and uniform grain and light
in colour
Yamaha LU90 - Layered
low grade spruce and dark in colour. Different grade of spruce compare to
the other Yamaha models
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Bridge and Strings
Hailun HL121 - Maple
treble and bass bridge, individually notched. German Röslau
wires
Yamaha LU90 -
Maple treble and bass bridge. Japanese wires
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Pinblock
Hailun HL121 -
17-18 plies of hard rock maple from Siberia
Yamaha LU90 -
Hard
maple pinblock
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Warranty
Hailun HL121 - Brand new with 10 years FACTORY warranty
Yamaha LU90 - Brand new
with 6 years FACTORY warranty
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Conclusion and Price
Hailun HL121 -
Taller than Yamaha LU90 (+13cm). Longer string
length (+10cm) and larger soundboard area.
Hailun HL121 promotes better resonance with powerful bass and
better control and ability to repeat notes quickly. 88 keys with 3 pedals
with 4 pcs of twin-caster rollers).
Yamaha LU90 - Lack of
sustain power and weak in tone because of short speaking length and small
soundboard area. Poor control due to the compressed action parts, not
comparable to the other taller Yamaha models. 88 keys with 3 pedal, no
casters (rollers).
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