Materials for Aluminum Electrolytic Capacitors for
Audio Applications
The structural material
for aluminum electrolytic capacitors and their impacts
on sound quality are summarized in Table 1. A skillful
material combination is essential in providing superior
sound performance.
Structural
Material
Material
Characteristics
Effect
on Capacitor Characteristics
Effect
on Acoustics
Basic
Material
Electrode
foil, forming, etching
Heat
resistance
ESR
*
Generally, the sound quality improves at lower multiplier
values.
Electrolyte
Conductivity,
viscosity
ESR,
tan
*
Reduces the sense of distortion in the sound and increases
the sense of clearness.
Electrolytic
paper
Density
Thickness
ESR,
tan
Manila: good
Craft: poor
* Improvements in reverb, which requires a large amount of information.
* Reduces reverb, which improves the attack.
* Improves the sound field, the clarity, and the sharpness.
* Improves the midrange responsiveness and low range richness there
in
Lead
lines
Distortion
ESR
* Rough but strong
* Sweet high region
Case
materials sleeve
Characteristic
vibrations
Vibration
characteristics
*
Stabilization through Frost processing and through
vibration-absorbing alloys, etc.; improved sensitivity,
changes to sound quality through the sleeve materials
and the dye that is included.
Seal
rubber
Characteristic
vibrations
Vibration
characteristics
Life expectancy
* The sense of rhythm comes through powerfully.
* Goes deep, with stable orientation
Manufacturing
Method
Number
of windings
L
component
Induced
voltage
*
Generate the sound through partitioned coils, etc.
to improve resolution.
