10 best audio coupling capacitor

An audio coupling capacitor, often referred to simply as a coupling capacitor or a DC-blocking capacitor, is an electronic component used in audio and electronic circuits. It plays a crucial role in separating the DC (direct current) component from the AC (alternating current) audio signal. Here's what you need to know about audio coupling capacitors:

  1. Purpose: The primary purpose of an audio coupling capacitor is to block the DC voltage while allowing the AC audio signal to pass through. In audio circuits, it's common to have DC voltages present, which can cause problems if they reach subsequent stages of the circuit or audio equipment. The coupling capacitor prevents these DC voltages from affecting the audio signal.

  2. Component Location: Audio coupling capacitors are typically placed between two stages of an electronic circuit, such as between the output of one amplifier stage and the input of another. They are often found in preamplifiers, power amplifiers, and other audio processing equipment.

  3. Capacitance Value: The capacitance value of an audio coupling capacitor is carefully chosen based on the specific application and the desired frequency response. A higher capacitance value allows lower frequencies to pass through, while blocking higher frequencies. This is an essential consideration for audio equipment, as it affects the frequency range and audio quality.

  4. Roll-Off Frequency: The choice of capacitance value in the coupling capacitor determines the "roll-off" frequency, which is the point at which the capacitor starts to block lower frequencies. This is a critical parameter in audio design, as it can impact the bass response and overall frequency balance of the audio equipment.

  5. Capacitor Type: Different types of capacitors can be used as audio coupling capacitors, including electrolytic capacitors, film capacitors, and ceramic capacitors. The choice of capacitor type can affect factors such as audio signal quality, size, and cost.

  6. Voltage Rating: The voltage rating of the coupling capacitor should be selected to safely handle the maximum voltage present in the circuit. Using a capacitor with a lower voltage rating can lead to voltage breakdown and damage to the component.

  7. Signal Integrity: High-quality audio coupling capacitors are chosen to maintain signal integrity and audio fidelity. Lower-quality capacitors may introduce distortion or affect the sound quality.

  8. Maintenance and Replacement: Over time, audio coupling capacitors can degrade, impacting the performance of audio equipment. As a result, they may need to be replaced periodically, especially in vintage audio gear.

In summary, audio coupling capacitors are essential passive components in audio circuits that block DC voltages while allowing AC audio signals to pass through. Their capacitance value, type, and quality play significant roles in shaping the frequency response and audio quality of the equipment in which they are used. Proper selection and maintenance of these capacitors are crucial for maintaining high-quality audio performance in audio equipment and electronic devices.

Below you can find our editor's choice of the best audio coupling capacitor on the market
  

2pcs 12000uf 63V Audio Capacitor HiFi Electrolytic Capacitor for Circuit Control

Based on 4 reviews Check latest price

Product description

Features:

This product is Audio 63V 12000uf Filter HIFI Electrolytic Capacitor 

Widely used in blocking, coupling, bypass, filtering, tuning circuit, energy conversion, control circuit and other aspects.

The audio coupling capacitors separate the former and the latter in dc so that the latter is not affected by the former

Coupling capacitors isolate strong and weak current, provide high frequency signal path, prevent power frequency current from entering weak current system, and ensure personal safety

Audio coupling capacitors are used on music related circuits to achieve the purpose of good sound quality



Specifications:

Voltage: 63V 

Capacity: 12000uf

Size: 35×50mm/1.38×1.97in

Weight: 123g



Package includes:

2 × Capacitors

  • Product Parameters：Capacity: 12000uf. Voltage: 63V. Size: 35×50mm/1.38×1.97in.
  • Material: Electrical Components. Structure: Fixed Capacitor.
  • Function: Audio coupling capacitors are used on music related circuits to achieve the purpose of good sound quality.
  • Safety Guarantee: Coupling capacitors isolate strong and weak current, provide high frequency signal path, prevent power frequency current from entering weak current system, and ensure personal safety.
  • Application: Widely used in blocking, coupling, bypass, filtering, tuning circuit, energy conversion, control circuit and other aspects.

Electrolytic Capacitors，2pcs Audio 63V 12000uf Filter HiFi Electrolytic Capacitor 3550mm for Circuit Control，Stable Voltage, Sufficient Capacity, Long Service Life and is Heat Resistant.

Thincol

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Product description

Features:

This product is Audio 63V 12000uf Filter HIFI Electrolytic Capacitor

Widely used in blocking, coupling, bypass, filtering, tuning circuit, energy conversion, control circuit and other aspects. The audio coupling capacitors separate the former and the latter in dc so that the latter is not affected by the former Coupling capacitors isolate strong and weak current, provide high frequency signal path, prevent power frequency current from entering weak current system, and ensure personal safety

Audio coupling capacitors are used on music related circuits to achieve the purpose of good sound quality



Specifications:

Voltage: 63V

Capacity: 12000uf

Size: 35*50mm/1.38*1.97in

Weight: 123g



Package includes:

2 x Capacitor

  • This product is Audio 63V 12000uf Filter HIFI Electrolytic Capacitor
  • Widely used in blocking, coupling, bypass, filtering, tuning circuit, energy conversion, control circuit and other aspects.
  • The audio coupling capacitors separate the former and the latter in dc so that the latter is not affected by the former
  • Coupling capacitors isolate strong and weak current, provide high frequency signal path, prevent power frequency current from entering weak current system, and ensure personal safety
  • Audio coupling capacitors are used on music related circuits to achieve the purpose of good sound quality

Electrolytic Capacitor, Audio Electrolytic Capacitor Electronic Component for DC Coupling Bypassing Fitering Tuning Loops Energe Conversion Control Circuits 10000uF 63V 3050mm 4pcs

Vikye

Based on 1 reviews Check latest price

Product description

Features:

1. Stable voltage, sufficient capacity, long service life.

2. Stable capacity, high temperature and humidity resistance.

3. The specifications of this item is marked on the surface of capacitor.

4. This is a great choice for electronic professionals or enthusiasts.

5. Widely used in isolating DC, coupling, bypassing, filtering, tuning loops, energy conversion, control circuits and so on.

 

Specifications:

Quantity: 4pcs

Capacitor: 10000uF

Rated Voltage: 63V

Height: 5cm/1.97in

Diameter: 3cm/1.18in

Weight: Approx. 177g

  

Package Includes:

4 x audio electrolytic capacitor

 

Note:

Please allow 1-3mm error due to manual measurement. Thanks for your understanding.

  • ✔【Good Choice】This is a great choice for electronic professionals or enthusiasts.
  • ✔【Application】Widely used in isolating DC, coupling, bypassing, filtering, tuning loops, energy conversion, control circuits and so on.
  • "✔【Stable 】Electrolytic Capacitor--sufficient capacity, long service life, high temperature and humidity resistance.
  • ✔【Service】The quality of our products is guaranteed and can be used without hesitation. If you have any questions during use, please feel free to contact us."
  • ✔【Size】Capacitor: 10000uF, Rated Voltage: 63V, Height: 5cm/1.97in, Diameter: 3cm/1.18in;The specifications of this item is marked on the surface of capacitor.

PAPRI 10PCS 4.7UF/400VDC Audiophiler MKP Axial capacitor audio grade, ±3% HIFI DIY Frequency capacitance guitar amps (400V, 10PCS 4.7UF/400V)

Based on 2 reviews Check latest price

Product description

PAPRI Audiophiler MKP Axial capacitor audio grade, ±3%

4.7UF/400VDCMetal Film Coupling Divider Capacitor

Pure brass pins

The price is for 10Pcs

Length: 35.5mm

Diameter: 21.5mm

Feet Length :42MM

weight:14.3g/1PC

For replacement or new project of tube amplifier, guitar amplifier radio and others

  • PAPRI Audiophiler MKP Axial capacitor audio grade, ±3%
  • Metal Film Coupling Divider Capacitor :Pure brass pins
  • The price is for 10Pcs
  • Length: 35.5mm Diameter: 21.5mm
  • For replacement or new project of tube amplifier, guitar amplifier radio and others

Eboxer 4 Pcs Capacitor 10000uF 63V Electrolytic Capacitor, for Isolating DC, Coupling, Bypassing, Filtering, etc

ASHATA

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Product description

Specifications:

Quantity: 4pcs

Capacitor: 10000uF

Rated Voltage: 63V

Height: 5cm/1.97in

Diameter: 3cm/1.18in

Weight: Approx. 177g



Package Includes:

4 x audio electrolytic capacitor



Note:

Please allow 1-3mm error due to manual measurement. Thanks for your understanding.

  • ⇝DURABLE: This electrolytic capacitor stable voltage, sufficient capacity, long service life.
  • ⇝HIGH TEMPERATURE RESISTANCE: 10000uF 63V capacitor stable capacity, high temperature and humidity resistance.
  • ⇝SAFETY PROTECTION: This capacitor aluminum case designed explosion-proof vent.
  • ⇝GREAT CHOICE: This is a great choice for electronic professionals or enthusiasts.
  • ⇝WIDE SUITABLE: Widely used in isolating DC, coupling, bypassing, filtering, tuning loops, energy conversion, control circuits and so on.

6 pcs Nichicon FG Capacitors 63V 10uf Audio Grade

Nichicon

Based on 14 reviews Check latest price

Product description

6 pcs Aluminum Electrolytic Capacitors Leaded 10uF 63V 20%

Audio grade capacitor higher grade than FW series

Rich sound in the bass register and clearer high end

6.3 x 11mm Lead spacing 2.5mm

Ripple current 50 mA at 85°C 120Hz

  • Nichicon FG MUSE Series
  • Audio grade capacitor higher grade than FW series
  • Rich sound in the bass register and clearer high end
  • 100% Authentic Nichicon made
  • 6.3 x 11mm Lead spacing 2.5mm

100pcs DIY High Grade Audio Capacitor Assorted Electrolytic Capacitors Kit 10 Values 10V-63V 10uf-470uf

Based on 28 reviews Check latest price

Product description

Specifications:

Quantity  Voltage  Capacitance  Series     Size 

10pcs       10V      100UF        FG     6.3mmx11mm

10pcs       10V      470UF        FW     6.3mmx11mm

10pcs       16V      47UF         FG     6.3mmx11mm

10pcs       16V      220UF        FW     6.3mmx11mm

10pcs       25V      47UF         FG     6.3mmx11mm

10pcs       25V      100UF        FW     6.3mmx11mm

10pcs       50V      10UF         FG     5mmx11mm

10pcs       50V      22UF         FW     5mmx11mm

10pcs       63V      10UF         FW     5mmx11mm

10pcs       63V      47UF         FW     6.3mmx11mm



Weight: 75g(approx.)



Package Includes:

100 x Electrolytic Capacitors





Note: 

Capacitors are sorted manually, so there might be small mistakes on type and quantity. Thanks for your understanding.



  • MEET YOUR NEEDS: This set includes 10 types of popular capacitors10v-63v 10uf-470uf which could meet your basic needs.
  • ADVANTAGE: Convenient and practical use, very popular in electronic enthusiasts and amateurs.Safely packed and assorted in a plastic box for convenient use and storage. easy to distinguish; all capacitors are packed in re-use box, easy to manage, you could also add your other resistors transistors diodes capacitors in this box.
  • HIGH QUALITY: These are high quality, electrolytic audio capacitors for making audio circuit.
  • MULTIPURPOSE ELECTROLYTIC CAPACITORS ASSORTMENT: Suitable for audio applications, quite good accessory for audio DIY or repair.

AuSL 24 Value 500pcs Electrolytic Capacitor Assortment Box Kit Range 0.1uF－1000uF (24 Value 500pcs)

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Product description

Product Description:

High quality and long life

Nominal Capacitance : 0.1uF~1000uF

Capacitance Tolerance: electrolytic +/-20%

Operating Temperature Range: -40deg/C ~105+deg/C

Temperature Coefficient: -55to+175deg C

Package list:

0.1uF 50V 4x7 30pcs

0.22uF 50V 5x11 20pcs

0.47uF 50V 5x11 20pcs

1uF 50V 5x11 20pcs

2.2uF 50V 4x7 30pcs

3.3uF 50V 4x7 30pcs

4.7uF 50V 4x7 30pcs

10uF 25V 4x7 30pcs

10uF 50V 5x11 20pcs

22uF 16V 4x7 30pcs

22uF 25V 4x7 30pcs

33uF 16V 4x7 30pcs

47uF 10V 4x7 30pcs

47uF 25V 5x11 20pcs

47uF 50V 6x11 15pcs

100uF 16V 5x11 20pcs

100uF 25V 5x11 15pcs

220uF 10V 5x11 15pcs

220uF 25V 6x11 15pcs

330uF 25V 8x12 10pcs

470uF 10V 6x11 10pcs

470uF 16V 8x12 10pcs

680uF 16V 8x12 10pcs

1000uF 16V 10x16 10pcs

  • 24 types 500 pcs 16 ~ 50V.
  • 0.1uF to 1000pF Electrolytic Capacitors.
  • The nice sturdy box helps you keep all caps in order.
  • All the capacitor is packaged in the order of the paper marked, easy to find what you need.
  • Excellent humidity resistance and reliable performance.

Rustark 545Pcs 24Value Aluminum Electrolytic Capacitor Assorted Assortment Kit - Range 0.1uF－1000uF

Based on 24 reviews Check latest price

Product description

Specifications:

▪ Product Name: Electrolytic Capacitor Assortment Kit

▪ Material: Aluminum

▪ Color: Black

▪ Voltage: 10V, 16V, 25V, 50V

▪ Capacitance Model: 0.1uF~1000uF (0.1uF, 0.22uF, 0.47uF, 1uF, 2.2uF, 3.3uF, 4.7uF, 10uF, 22uF, 33uF, 47uF, 100uF, 220uF, 330uF, 470uF, 680uF, 1000uF)

▪ Quantity: 545Pcs in total with durable transparent case.



Product Advantage:

▪ High-quality Material & Diverse Capacitance Model

▪ Reliably After-Sale Service & Easy to Carry

▪ Wide Application & Easy to Read Label



Product Quantity:

▪ 0.1uF 50V 4x7........................... 35pcs 

▪ 0.22uF 50V 5x11....................... 20pcs 

▪ 0.47uF 50V 5x11....................... 20pcs 

▪ 1uF 50V 5x11............................ 20pcs 

▪ 2.2uF 50V 4x7............................35pcs 

▪ 3.3uF 50V 4x7............................35pcs 

▪ 4.7uF 50V 4x7 ...........................35pcs 

▪ 10uF 25V 4x7 ............................35pcs  

▪ 10uF 50V 5x11 ..........................20pcs  

▪ 22uF 16V 4x7 ............................35pcs  

▪ 22uF 25V 4x7 ............................35pcs  

▪ 33uF 25V 4x7 ............................35pcs  

▪ 47uF 10V 4x7 ............................35pcs  

▪ 47uF 25V 5x11 ..........................20pcs  

▪ 47uF 50V 6x11 ..........................15pcs  

▪ 100uF 16V 5x11 ........................20pcs  

▪ 100uF 25V 5x11 ........................15pcs  

▪ 220uF 10V 5x11 ........................15pcs  

▪ 220uF 25V 6x11 ........................15pcs  

▪ 330uF 25V 8x12 ........................10pcs  

▪ 470uF 10V 6x11 ........................10pcs  

▪ 470uF 16V 8x12 ........................10pcs  

▪ 680uF 16V 8x12 ........................10pcs  

▪ 1000uF 16V 10x16 ...................10pcs 

  • ❤【24 Kinds & 16-50V Capacitor】--- The whole set contains 24 kinds 405pcs electrolytic capacitor, including range [0.1uf - 1000uf] assortment kit, package in a durable transparent box that have many lattice with label, you can easily distinguish each kind.
  • ❤【Capacitance Model】--- It contains 0.1uF~1000uF, [0.1uF, 0.22uF, 0.47uF, 1uF, 2.2uF, 3.3uF, 4.7uF, 10uF, 22uF, 33uF, 47uF, 100uF, 220uF, 330uF, 470uF, 680uF, 1000uF]
  • ❤【Advanced Materials】--- Made of advanced quality aluminum, excellent humidity resistance, wide capacitor, it can be served for a long time.
  • ❤【Wide Applications】--- Perfect for power supplies and in interconnecting stages of amplifiers at audio frequencies, widely used in car car audio, TV, air conditioner and wiring, ceiling fan, AC unit, teaching, DIY projects, and others.
  • ❤【Reliably After-Sale Service】--- We will provide you with reliable after-sales service. If you have any questions about our products, please feel free to contact us, I will reply you within 12 hours, if our products have quality problems in the process of using, we will provide 90 days return service for you. Please set your heart at rest to purchase.

User questions & answers

Question: What is the country of manufacture
Answer: China
Question: Does Amazon sell high voltage capacitors with low capacitence values? I'm working on a old tube radio
Answer: Some, but beware that there are a lot of counterfeit products, even in reliable channels, like HItachi HGC FA series, which Hitachi has not actually made for 15 years, but fakes are sold in many places.

Tegg 200PCS 15 Value 0.1-220uF Aluminum Electrolytic Capacitors Aluminum Radial Leads Capacitor Assorted Assortment Box Kit Set for Arduino Car Audio TV

Tegg

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Product description

Specification:

Type: Aluminum Electrolytic Capacitor.

Color: mainly black.

Material: Aluminum.

Nominal Capacitance : 0.1uF~220Uf.

Quantity: 200PCS in total:

Capacitance --- Voltage ---- ¦µDxL(mm) --- Quantity

0.1uF ------------- 50V --------- 4x7mm -------- 15PCS

0.22uF ------------ 50V -------- 5x11mm-------- 15 PCS

0.47uF ------------ 50V -------- 5x11mm ------- 15 PCS

1uF ---------------- 50V -------- 5x11mm ------- 15 PCS

2.2uF ------------- 50V --------- 4x7mm --------- 15 PCS

3.3uF ------------- 50V --------- 4x7mm --------- 15 PCS

4.7uF ------------- 50V --------- 4x7mm --------- 15 PCS

10uF ------------- 25V ---------- 4x7mm --------- 15 PCS

22uF ------------- 25V ---------- 4x7mm --------- 15 PCS

47uF ------------- 25V ----------- 4x7mm --------- 15 PCS

47uF -------------16V ------------ 5x11mm ------- 10 PCS

33uF ------------ 16V ------------- 8x12mm ------- 10 PCS

100uF ----------- 16V ------------ 5x11mm ------- 10 PCS

100uF ----------- 25V ------------- 4x7mm -------- 10 PCS

220uF ------------ 10V ---------- 5x11mm -------- 10 PCS



Package Including:

1 Set of 200CS 15 Values Total Electrolytic Capacitors 0.1uF to 220uF .

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