New green technology speaker & loudspeaker

Type

Moving-Coil type

(traditional speaker)

Piezoelectric speaker

(new green& ultrasonic, nano-ceramic resonance  technology product)

working principle

,

Under Electromagnetic induction, Paper cone movement by coil

,

Piezoelectric plate vibrates in Electric field to drive resonance body effectively

Power

1-500W

1-500W

            Power Amplifier

,

Low-voltage and high-current, cannot be transmitted over long distance.

,

High-voltage and low-current, be transmitted over long distance.

Frequency scope

Acoustic Frequency

From acoustic frequency to ultrasonic wave

Impedance

electromagnetic low impedance

Capacitance high impedance

Tone Quality

,

Frequency division multiplexing influenced by alto, baritone and bass

,,

Whole-band frequency surround , full range of voice, clear and natural tone, more pure

distortion factor

plunger type vocalizing; higher amplitude, more distortion

Plane vocalizing;

Lower amplitude, small distortion

Sensitivity

Low

High

Sound direction

Force Directivity and location restricted

,

Plane equally vocalizing, small difference for directivity far and near

outline

unwieldy sculpt, and need of extra sound box, inconvenient installation

Appearance of art, easy installation and beauty

Structure

Complicated

Simple

Sound box

,

Design complexity and big size b

No useful

Space and Location

,

occupy space and location restricted

,

Small space and flexible location

Weight

Heavy

Portable

Material consumption  

high

low

Energy

High power consuming

30%

30% energy saving

System integration 

Complicated

Simple