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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.

Table 1

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 tanδ
Reduces the sense of distortion in the sound and increases the sense of clearness.
Electrolytic paper Density Thickness ESR, tanδ
Manila: good
Craft: poor
Improvements in reverb, which requires a large amount of information.
Reduces reverb, which improves the attack.
Ceramic content
Improves the sound field, the clarity, and the sharpness.
Lead lines Distortion ESR
CP Lines
Rough but strong
OFC Lines
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.