WESTERN ELECTRIC JP09M Aerovox Oil Paper Capacitor Mfd Tube Amplifier 2500V 211 845 We

( Brand: Western Electric ), ( Manufacturer Part Number: JP09M ), ( Part Type: Oil Paper Capacitor Tube Amplifier ), ( Country Of Origin: United States )

Review WESTERN ELECTRIC Aerovox Oil Paper Capacitor Mfd 2500v For 211 845 242 We Tube Amplifier

The Western Electric JP09M Aerovox oil paper capacitor is a vintage component that holds significant value for collectors and audio enthusiasts restoring or building tube amplifiers. This specific capacitor has a capacity of 0.09 microfarads and is rated for a working voltage of 2500 volts. It is designed to meet the requirements of RCA's 211-A, 845-B, and 242-B vacuum tubes, making it an essential component for amplifiers based on these tubes.

The JP09M Aerovox oil paper capacitor is a non-polarized capacitor, meaning it can be connected in either polarity without causing damage. The capacitor's construction is unique, featuring oil-impregnated paper as the dielectric material, which provides excellent electrical characteristics and stability. The oil acts as a dielectric fluid that keeps the paper from drying out, ensuring the capacitor maintains its electrical properties over an extended period.

As a high-voltage capacitor, the JP09M Aerovox is designed to handle high voltage pulses without breaking down or arcing, making it suitable for use in power amplifier applications. The capacitor's large size (measuring approximately 3.5 inches by 1.5 inches) and rugged construction indicate its durability and ability to handle the rigors of high-power audio applications.

The Western Electric JP09M Aerovox oil paper capacitor is a true vintage component, manufactured in the mid-1950s. Its historical significance and superior electrical performance make it a highly sought-after item for those restoring vintage tube amplifiers or building new designs based on classic audio circuits. When purchasing this capacitor, it is important to ensure that it is in good working condition and has been properly tested to ensure its electrical safety and reliability.

The Western Electric JP09M Aerovox oil paper capacitor is a valued component for vintage tube amplifiers, particularly the 211-845-242 model. This capacitor plays a vital role in the electrical circuit, storing and releasing energy to ensure optimal performance. Here are some pros and cons of buying this specific capacitor for your tube amplifier.

1. Authenticity: The Western Electric JP09M is an original capacitor manufactured by Western Electric during the 1950s. This adds historical value and authenticity to your amplifier.

2. Superior Sound Quality: Older capacitors like the Aerovox are known for their superior sound quality compared to modern capacitors. They offer a more natural, warm, and detailed sound.

3. Vintage Look: The Aerovox oil paper capacitor has a classic, vintage look that complements the appearance of older tube amplifiers.

1. Cost: Original capacitors from Western Electric, such as the JP09M, can be quite expensive due to their rarity and historical value.

2. Availability: Finding an original JP09M capacitor in good condition may be challenging, as they were manufactured decades ago.

3. Maintenance: Oil paper capacitors require regular maintenance to ensure proper functioning. This includes checking for leaks and refilling the oil if necessary.

While the Western Electric JP09M Aerovox oil paper capacitor offers superior sound quality and historical value for your vintage tube amplifier, it comes with a high cost and the need for regular maintenance. If you're looking for an affordable alternative, consider modern capacitor options or rebuild kits. However, if you're committed to preserving the originality and authenticity of your amplifier, the JP09M may be a worthwhile investment.

If you're willing to invest in an original Western Electric JP09M Aerovox oil paper capacitor, make sure to purchase it from a reputable dealer or seller to ensure its authenticity and good condition. If budget or availability is a concern, consider alternative options such as modern capacitors or rebuild kits. Always remember that the choice ultimately depends on your priorities and the specific requirements of your vintage tube amplifier.

Details:

Dimensions: 4 1/2 x 5. Condition: new in the box, checked OK with meter, long time storage. Lot of 2 Aerovox Oil Paper Capacitor 4 MFD 2500V 1950 for 211 845 242 285 Western Electric Tube Amplifier or Ham Transmitter project.

part #: jp09m prices

• $40.00-$215.00

specifications vintacapacitor:

• brand: Western Electric
• mpn: Jp09m
• part type: Oil Paper Capacitor Tube Amplifier
• country of origin: United States

offer vintacapacitor:

• options: Ship-to-home
• quantity: 2
• sold: 0
• availability: In Stock
• started: January 7, 2026

general vintacapacitor:

• condition: New
• Vintage Audio Video > Vintage Parts Accessories > Vintage Capacitors

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• class: Standard
• cost: $25.90
• carrier: USPS, FedEx
• transit: 7-10 Days
• type: Calculated
• service: USPS Ground Advantage, FedEx Ground / FedEx Home Delivery

seller vintacapacitor:

• # reviews: 795
• city: Brooklyn, New York
• rating: 99.2%

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• policy: No Returns

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