What is 3 Inch Passive Radiator?
A 3-inch passive radiator is an acoustic component used in speaker design to improve bass response without requiring additional amplifier power. Unlike a traditional speaker driver with a voice coil and magnet, a passive radiator is a diaphragm (usually a cone or flat surface) that vibrates sympathetically with the air pressure variations inside the speaker enclosure created by the active driver. This sympathetic vibration reinforces the low-frequency sounds, effectively extending the bass response of the speaker. Specifically, a 3-inch passive radiator has a diaphragm diameter of approximately 76.2mm. Common brands include Dayton Audio, Peerless by Tymphany, and Tang Band. While we stock compatible options, specific brands may vary. These are often used in DIY speaker projects, portable Bluetooth speakers, and compact sound systems to achieve a richer, fuller sound from a smaller enclosure.
Key Features & Specifications
This 3-inch passive radiator features a durable cone, typically made of paper, treated paper, or polypropylene, for optimal sound reproduction. The surround is usually made of rubber or foam to allow for controlled movement of the cone. Key specifications include a diaphragm diameter of approximately 76.2mm (3 inches), a mounting depth of around 15-20mm, and a frame diameter that might range from 80-85mm depending on the model. The moving mass (Mms) is a crucial parameter, usually specified in grams (g), and affects the tuning frequency of the radiator. A common Mms value for a 3-inch passive radiator is between 5-10g. The compliance (Cms) also plays a key role in the tuning. The resonant frequency (Fs) of the passive radiator, when mounted in the enclosure, will determine the effective bass extension. These radiators are designed for use in enclosures ranging from roughly 1 to 5 litres in volume, depending on the desired tuning.
Use Cases & Applications
The 3-inch passive radiator is commonly used in DIY speaker projects, especially portable Bluetooth speakers and bookshelf speakers, where maximizing bass response within a small enclosure is crucial. Imagine building a compact Bluetooth speaker for your desk; a 3-inch passive radiator can significantly enhance the low-end frequencies, resulting in a richer and more satisfying listening experience. They are also used in commercial audio products like mini soundbars and computer speakers. For audio enthusiasts, they are a valuable tool for experimenting with speaker design and achieving a desired sonic profile. Many hobbyists use them to breathe new life into older speaker systems, improving their bass performance without replacing the main driver.
Buying Guide - How to Choose
Before purchasing a 3-inch passive radiator, carefully consider the enclosure volume and the desired tuning frequency of your speaker system. The mass (Mms) of the passive radiator is a critical factor in determining the tuning. You'll need to calculate the appropriate Mms value based on your enclosure size and target Fs (resonant frequency). Use online speaker design calculators to assist with this. Ensure the mounting dimensions of the passive radiator are compatible with your speaker enclosure. Avoid radiators with visible defects or damage to the cone or surround. Check customer reviews for feedback on the radiator's performance. Don't assume that a larger passive radiator will always produce better bass; proper tuning is essential. Also, ensure the passive radiator's frame is sturdy enough to handle the air pressure within the enclosure.
Why Buy from Nilgiri Stores?
At Nilgiri Stores, we understand the importance of quality audio components. We offer a carefully selected range of 3-inch passive radiators to meet your DIY speaker needs. You can be confident you're getting authentic products at competitive prices. We provide fast and reliable delivery across India, ensuring you receive your components quickly and efficiently. Our quality guarantee ensures your satisfaction. Our customer support team is available to assist you with any questions or concerns you may have. Experience the Nilgiri Stores difference and elevate your audio projects today! We also offer competitive prices, often lower than ₹500, depending on the specific model.
Quality & Authenticity
Nilgiri Stores is committed to providing genuine and high-quality audio components. We source our 3-inch passive radiators from reputable manufacturers and suppliers. Each product undergoes thorough quality checks before being shipped to ensure it meets our stringent standards. We offer warranties on our products to provide you with peace of mind. While we may not always be authorized distributors for every brand, we guarantee the authenticity and performance of all our products.
What Our Customers Say
Customers consistently praise the performance and value of 3-inch passive radiators for enhancing the bass response of small speakers. Many report noticeable improvements in the low-end frequencies, resulting in a fuller and more satisfying sound. Customers also appreciate the fast delivery and secure packaging provided by Nilgiri Stores. Several reviews mention the ease of installation and the positive impact on DIY speaker projects. Overall, users are satisfied with the quality, performance, and value of these passive radiators.