What are Passive Bass Radiators?
Вставка
- Опубліковано 6 чер 2024
- Timestamps:-
0:00 - 0:08 - Introduction
0:09 - 0:34 - What are Bass Radiators?
0:35 - 1:18 - How did a Bass Radiator design come into picture
0:19 - 1:38 - An example of a typical speaker with speakers drivers and bass radiators or "drone cones"
1:39 - 1:52 Why are they called "Passive" Bass Radiators? Hint : they use Air Pressure inside the cabinet
1:53 - 3:01 - Benefits of Passive Bass Radiators and brands which employ Bass Radiators in some of their home theater speakers
3:02 - 3:31 - Drawbacks of a Passive Bass Radiator
3:32 - 3:44 - Some examples of speakers where Bass Radiators are used
3:45 - 4:22 - Shop for Speakers on www.ooberpad.com
Passive bass radiator is commonly seen in many speakers today, especially portable Bluetooth speakers. However, not many people fully understand what they are and what purpose they serve.
In this video, we will demystify passive radiators and explain everything in detail. Make sure to watch this video till the end to get a complete understanding of the speaker component.
Now, let’s get started and understand what exactly passive bass radiators are.
Simply put, a passive radiator is a drum-like driver without a magnet or voice coil. It is usually made of a lightweight cone attached to a moving surround in a frame.
Passive radiators work by moving air in sync with the woofer or subwoofer in response to sound waves produced by the active driver. This enhances the bass output and extends the low frequency response of the speaker.
In contrast to a ported design, passive radiator does not use a port or vent for managing air pressure inside the cabinet. Instead, the radiator itself takes care of controlling airflow and cabin pressure.
Now let’s look at some of the main benefits of passive bass radiator:
Increased bass extension - By resonating sympathetically with the woofer, passive radiators allow speakers to reach lower frequencies than otherwise possible. This significantly extends the bass response.
Reduced distortion - Passive radiators help control cabinet pressure more linearly than ports. This lowers distortion and makes the bass tighter and more articulate.
Compact enclosures - Speakers with passive radiator can be made more compact while still delivering strong bass. This is ideal for portable Bluetooth speakers.
Better time alignment - The passive radiator's output is better aligned with the woofer's output timing-wise. This improves the phase coherence in the crossover region.
Weather resistance - Unlike ports, passive radiators have no opening. This makes them inherently resistant to water and dust ingress.
Greater efficiency - Passive radiator improve bass output efficiency by up to 3 dB compared to equivalent ported designs.
As you can see, integrating a passive radiator into a speaker system has several acoustic benefits. This is why many speaker manufacturers are adopting this design.
Passive radiators are commonly seen in portable Bluetooth speakers from brands like JBL, Anker, Sony, Bose and others. They allow substantial bass in a compact form factor.
Higher end home theatre speakers are also using them instead of ports. Some examples are speakers from Klipsch, KEF, Monitor Audio, and Paradigm.
The size of the passive radiator depends on the enclosure volume as well as the targeted frequency response. Most portable speakers use a 3 to 5-inch diameter passive radiator.
Home audio speakers can have 8-inch, 10-inch or even 12-inch passive cones to reproduce ultra-low bass down to 20 Hz. The radiator is tuned by optimizing its mass and suspension compliance.
Proper integration with the woofer is vital for good performance. The radiator must see an optimized acoustic load from the enclosure and amplifier. Advanced computer modelling is used to design passive radiator systems.
Passive radiator do have some limitations as well. The increased motion can potentially cause durability issues over time. Higher excursion requirements may also limit maximum acoustic output.
Careful engineering is needed to ensure reliable performance. Additionally, passive radiators can be more expensive than simple ports. However, the advantages outweigh the downsides in most cases.
We hope this video has helped you understand what passive bass radiator are and how they enhance bass response. If you are looking for speakers with this advanced design, check out Ooberpad.
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Music: zeropage - Ambiphonic (The song is permitted for commercial use under license “Attribution 3.0 Unported (CC BY 3.0)“”) - Розваги
The bass on the Sonos Beam is amazing from passive radiators for such a small speaker
Great presentation, so the vibration resonance help create low bass response
Great explanation, from all the vids yours had the best explanation...keep it up bro, good job!!!💯📈
Thank You. Do subscribe for more such informational videos. :)
Good video. Thank you for creating!
Glad you liked it! Do subscribe for more videos :)
Great video, bro. Congrats.
Appreciate it!
Very nice! Thank for the explanation of the technology.
Nice information thanks
great explication and video...thank you...i have a great Boston HD9 speakers...greetings from santiago of Chile.
Thanks for watching! Do subscribe for more informational videos.
Good information about passive radiators 👍
Thanks 👍
Do consider subscribing for such informational videos!
Nice explanation
Interesting info 👌
Thanks Ashish. Do like and subscribe for more interesting videos.
Hello, I want to create a bluetooth speaker box with 1(6.5 size) midbass and 1 tweeter. What size passive radiator I needed. Thank you .
Good video man
Glad you liked. Do subscribe for more informational videos.
Superb explanation. Any size ratio between woofer and passive radiater?
They are generally the same size.
Yes, you need 2 passives per 1 active, or the active will overpower the passive and will make noise.
Celestion was a big user of Bass Radiators on its high end speaker systems dating back to the early 1970s - especially the Ditton 66. So its definitely not a new thing, although more and more speaker manufacturers are making use of the technology.
Interesting, bro do you review speakers? how about sonodyne malhar?
No Sonodyne speakers at the moment. Though if your're plannning to purchase something similar do consider we have the fully wireless B&W Zeppelin 2021 edition, B&W flex, Sonos Five, B&O BeoSound Emerge and many more. Visit this link to explore more wireless speakers - www.ooberpad.com/collections/wireless-speakers
I have a question ...Is it necessary for a speaker with passive radiator to be cometely airtight from the inside ?
Yes
@@Scala916 I have a jbl xtreme, when I press the passive radiator the other side comes back after few millisecs ...so I guess it's necessary to keep a hairline gap for the excess pressure caused by the bass to sustain the speaker ?
When the speaker hast to be airthight how the woofer gets His Air?
Thanks dir answering
Instead of pushingnair put of a hole or tube, the radiator using air pressure caused by the sealed box, vibrates and creates low bass sound. Its a clever trick.
Can I use passive radiator speaker and have a bass port?
Not able to understand your query. Please have a look at this video if that helps - ua-cam.com/video/nTzayuVLaug/v-deo.html
🖤❤️✌️
We want 18 inch square bass radiator
Q.: does passive radiatar makes a speaker waterproof ?
Q.:bhai passive radiatar are better made with metal or better with plastic ......... Please send me the answer............#really #helpfull
No... a passive radiator doesn't make a speaker waterproof. Read more about IP ratings with this video - ua-cam.com/video/tB3e5Tk-BiQ/v-deo.html
Please pronunciation
Hindi may video banate tho or acha hota
Aap hamare Ooberpad Hindi youtube channel ko subscribe karein - ua-cam.com/channels/sEEscS3r7sy-FJItwrcDMA.html
no offense, but some closed english captions would be an immense help. Your accent is difficult to understand for a typical american.
Thank you for your Suggestion. We've added closed captions for this video.
Wasn't hard for me to understand
It's a thick and heavy accent but it's not hard to understand.
I am from Germany - I had no issues at all understanding this excellent explanation - for sure you cannot deny the accent but still good to follow an understand as the talking speed is well chosen to follow. I had a couple of irish friends at uni - far more difficult to understand them althought it was said to be mother tongue "english"...