A Look Inside The Heco Aurora 700 Speaker
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- Опубліковано 13 гру 2023
- #heco #hecoaurora #hecospeakers
Are you curious how the Heco Aurora speakers are constructed? In this video we look at the cabinet construction, TS parameters of the drivers, and crossover components. Is the Heco Aurora 700 worth it? Let's find out...
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Heco Aurora 1000 (white): amzn.to/3QZCToZ
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If you would like to support the channel then please consider purchasing your set of Heco speakers from the below affiliate links. It won't cost you anything and your support is much appreciated!
Heco Aurora 700 (black): amzn.to/3sQgceE
Heco Aurora 700 (white): amzn.to/3GieDcE
Heco Aurora 1000 (black): amzn.to/47T3gUn
Heco Aurora 1000 (white): amzn.to/3QZCToZ
Awesome review. Exactly what I want to see from a reviewer. I don't care about fancy living rooms and opinions. I want to see exactly what you showed. Great job.
This is an excellent teardown, thank you!
Hi ! To answer your question about the bucking magnet : It is use to concentrate the magnetic field inside the gap where the voice coil is moving. To shield a driver, a steel 'pot' or cover is often use to further isolate the magnetic field.
"A bucking magnet is a magnet placed near another magnet with opposing polarity to cancel out its magnetic field. This technique is commonly used in various applications to minimise unwanted magnetic interference or to create a more stable magnetic field."
Source below:
engineeryoursound.com/what-is-a-bucking-magnet-speaker-design-explained/
If I follow your reasoning, it would mean there would be no magnetic field to make the voice coil move. You can see that it makes no sense. Furthermore, if you put something ferromagnetic close to the magnet, you will see that the magnetic field is still quite strong and extend several inches from the driver.@@generationbehindhifi
@@yvesboutin5604 It's not my reasoning! Just about every publication has said the same thing regarding bucking magnets. I think you might be overthinking this a bit. Bucking magnets cancel out the external magnetic field of the main speaker's magnet so it has little effect on how a tube TV operates.
I wasn't planning on going in depth behind the engineering of bucking magnets in this video. I just wanted to share what they were primarily used for back in the 80s and 90s, and that they were somewhat rare to see now a days. If you would like to know more, then I would suggest looking at the video that Audioholics did on the Heco Aurora 1000. They touched on bucking magnets in their review and basically said the same thing I did. Hope this helps!
I listened to the video and it didn't confirm or deny the point in contention. It would be better if you get technical informations for an electrical engineer book than a conversation between two persons on a Utube channel. I modified a pair of speakers for a young man who wanted his two little speakers sitting right on top of his parents old TV with a couple of cans of tuna. Another time, a tiny tranfo was so close to the TV tube that it was distorting the image on screen. This time I used aluminium plating to shield the coils without interfering in the performance of the transfo. Copper can also be used in conjonction with other metals to contain electromagnetic interference like radio signals. And as I said earlier, if you would do the test for yourself, you would see that a bucking magnet do not prevent magnetic field to expand beyound the driver. @@generationbehindhifi
@@generationbehindhifiyou got him
Thanks for another build video. Very informative. Saw a good sound review of them online and your positive feedback has me looking forward to your upcoming sound review. You didn’t have to say the $2,200 build competitor so I will - Focal. Keep up the good work!
Thank you am placing my order. Your breakdown is amazing. I’ll let you know what they sound like when I connect them to my system.
Thank you! I appreciate the kind words. I think you will really enjoy them. I know I did!
Great video! Insane value for money product.
Thank you!
Looks like the people at Heco care about what they are sending out the door. Great to see such high quality measures in a budget speaker. Thanks for these detailed tear down videos I enjoy geeking out over this stuff more than the actual reviews. 👍🏻
For sure! Heco has done a really nice job with this speaker and the best part is, it's very affordable! Also, keep the shots of the Aurora drivers in your memory because another speaker company (Cerwin-Vega) uses an identical driver design in their new LA series of speakers.
I have the 1000 series for my TV and stereo and the 300 for my computer on my desk, i love it
Thanks!
Wow! Thank you! 🙏 I really appreciate this!
Can you review the bentley acoustics RF-3 line speakers
The vents on the midrange driver are mainly there to reduce the "spring" of trapped air, behind the dust cover, and behind the spider. Your impedance sweep looks to have 3 or 4 significant resonances? (Which are indicated by the "blips"/ripples in the impedance - at ~750Hx, just under 2kHz is a big one, and just above 5kHz.)
Yep, I saw that too. The resonances are not from the cabinet because I'm measuring the driver in an open baffle. IMO the vented pole piece is there to release the pressure from the trapped air behind the dust cap (but can also be used to cool the VC indirectly) and the vents under the spider are primarily there for cooling the voice coil.
Hola, me gustaría alguna reseña de su sonido, estoy muy interesado en estos altavoces, pero no sé porqué en todas las tiendas de sonido que he preguntado aquí en España no me lo recomiendan y a mi me gustan mucho.
really great, that just confirms the quality of heco aurora, could you install the heco aurora 300 and the matching subwoofer heco aurora 30a? I would be interested to see what it looks like on the inside because I have the heco aurora and I'm super happy with it.😊😊
I don't have any plans to do the Aurora 300 bookshelf but I would be open to see how their subwoofer performs. I think you're the only person so far that has requested more Heco videos. No doubt they make some good speakers for the money, but sadly they are not very popular for some reason. I'll see if I can try and get a subwoofer in for review. 🙂Thanks for the comment and feedback!
Bought the 1000s and the 300 surrounds and the center channel on Black Friday. Awesome speakers.
please do share your experience with the HECOs
Sweet speakers and well built too! Would these tower type speakers be appropriate for music only 2.1/2.2 listening? For some reason I have it in my head when I see these that they are meant for home theater. Another great video.
I appreciate the comment! Thanks! These speakers are extremely versatile and would be great in a music or home theater setup. I also think these speakers will perform great in a 2 channel music setup as long as there in a room that isn't too large. The bass output is pretty impressive for speaker that have such a small footprint. If you're an audiophile that has always wanted good performing floor standing speakers for an affordable price, then the Heco Aurora 700s is a speaker that you definitely want to have a listen to. I will talk more about their sound quality in my up and coming review video. Simply put, lots and lots of value for money with these!
@@generationbehindhifi thanks for the response! I look forward to the review!
They sound GREAT with music.
Velké překvapení ve zvuku, hrají za tu cenu neskutečně.
nice
Very detailed information. How do we know that efficiency is high without the minimum impedance data ? Sensitivity and efficiency aren't the same. Sensitivity have different units with different meanings. Thank you.
Hi Jorge, I don't follow what you are trying to say? Speaker sensitivity and efficiency are one in the same. I appreciate the kind words and comment!
"Speaker efficiency, also known as speaker sensitivity, is a measure of a speaker's decibel output at a specified amount of amplifier power. For example, a speaker's efficiency is typically measured with a microphone placed one meter from the speaker."
Source: www.lifewire.com/amp-power-speaker-efficiency-3135077#:~:text=Speaker%20efficiency%2C%20also%20known%20as,one%20meter%20from%20the%20speaker.
@@generationbehindhifi Efficiency according to other definitions is not decibel output but wattage needed for that decibel. Do speakers demand decibels to amplifiers or current and wattage for a determinate voltage ? Why 2,83 V at 1 m? Shouldnt' use a 4 Ω nominal speaker 2 V instead of 2,83 V ? How many watts would use a 4 Ω speaker at 2,83 V ? 1 W ? 2 W ? It's easy to demonstrate how some rated 92 dB/2.83V speakers might need more watts than some 87 dB/2,83 V models ? John DeVore ranted about that high-end lie (video has kind of the same name) and maths will do the rest. That should explain why some reviewers feel that sensitivity is some times misleading. Gain and position volume control is not related with current demand and wattage needed. Thank you.
@@Jorge-Fernandez-Lopez Thanks for clarifying, Jorge! Now I understand what you're saying. Basically the reason why we use 2.83v is because that equals 1 watt for a speaker with an impedance of 8 ohms -- we calculate this by using ohms law. Obviously the manufacturer would have to adjust their testing parameters for a speaker that has a lower impedance than 8 ohms if we wanted to compare apples to apples. Some manufacturers do this and some do not. But you are absolutely right, without knowing the testing parameters it's hard to tell if the manufacturer's sensitivity data is correct or not. I personally didn't test the sensitivity on the Aurora 700, but Audioholics did and actually came out with a better number than what Heco did. Below is a site that I think will help you understand the testing methodology.
www.brightonsoundsystem.co.uk/pa-hire/loudspeaker-sensitivity/
Great video 🙂, could you please tell me what is Heco tweeter resistance?, I have seen you have replaced them with 4Ohms Peerless, in my case I have decided to put SEAS PRESTIGE H 0831-06 ( 27TFF ), Wonder if there is a big difference between them
Hello Daniel! Thanks! In this video I have the impedance sweep of the factory tweeter at around the 6:00 minute mark. DC resistance came in at 3.2 ohms (4ohms). I'm not familiar with the tweeter you picked up, but did see that its 6 ohms. Because of this you will need to do some crossover tuning.
@@generationbehindhifi Hello again 🙂, thanks a lot for swift reply, Yes, Im aware about crossover changes but suprisingly it worka like a charm😀, The quality of SEAS is unbelivable, at the top of it there is a liquid fluid to cool it down, my first impression was Wow, its much more detailed and louder, The soud is purely crisp, in generał these columns are great but if you want to make it more dynamic then tweeter swap is a must, huge advantage of seas is also his dimensions, it fits perfectly into the hole, there is no need to drill any new places for screws, wonder which speaker is better 😃
@@danielilnicki9324Sorry, so did you just exchange the tweeter? Where did you buy it? I like the sound Hecos signature but it sounds like fun what you did.
@@danielilnicki9324 I tested both tweeters and the Scan Speak sounds even better than the SEAS 6ohm ones... The Scan Speak are more detailed without being obtrusive. I listened then for 2 days: original heco, SEAS prestige and scan Speak and I stayed with scan Speak due to much better detail and separation of sounds. The speakers have become a little brighter than the factory ones, but it's not as bright as in the focal aria speakers, but the detail does the job :) If someone would consider that tweeter is to load, without replacing the crossover, you can lower the volume without changing the resistance (lpad) . For example - 2dB
@@maciekczlCan you provide me with more specific details about the Scan Speak speakers pls? Or send me a link where I can buy them, I assume all demensions remain the same?
The nuts used on the binding plate to fasten the terminal posts are gold-plated steel - got it. I own these speakers for about a week and would like to replace the nuts with brass. Do you know where I can find the brass nuts?
Check the description. 🙂
Wow.... right in front of my face. Thanks!!@@generationbehindhifi
@@gregjackson5426 no worries!
I wonder how they sound against RP 800f 2. Similar build and price on sale
The heco 700 are 400€ less then the Klipsch RP 800f2
If you follow the magnet field of the extra magnet and through the plate on rear of motor magnet it cant add to motor magnet. The most likely purpose is for shielding, but as you said why. The other possibility is its just to add mass . To prevent speaker frame from moving in opposite direction to cone.
Think of a gun the only reason the person in front of gun gets shot and not the person holding the gun is due to guns mass. If gun and bullet had equal mass both people would get shot.
I do not think they are even all iron core inductors ,
From the shape they look like it , but if they are like the aurora 1000 , only one is a iron core inductors , despite the shape and aspect of the rest , I do think they are air core inductors
Somebody has been watching GR Research. ;)
Sadly it seems that Heco speakers did not sell enough here in the US for Audio Advice to keep selling them. Hopefully they will sell direct to consumers at some point. Love my 1000's.
That's sad to hear! They make a phenomenal speaker for the money.
There is actually only 1 iron core inductor, the other 3 are air core.
Someone has been watching GR research. He did the Aurora 1000. I have the 700 so they are a different model.
Why whould steel nuts affect sound?
IEEE did a white paper on ferromagnetic parts in audio connectors and its a good read. Basically the study proved that ferromagnetic parts introduce passive intermodulation, aka 3rd-order harmonics distortion to the signal! Simply put, there's a reason why high end speakers use non ferromagnetic parts in the signal path.
Paper can be read here: ieeexplore.ieee.org/ielaam/22/8681220/8632973-aam.pdf
@@generationbehindhifi Thanks for your explaination. I will certainly have a read of the white paper. Cheers Ian.
HECO mereged with Magnat and also isolates the mid-range woofer
Thanks for sharing that information. I had no idea Heco and Magnat were under the same umbrella, but I'm also pretty new to the brand.
@@generationbehindhifi thank you for making speaker video reviews, its ez to find good decent speakers with your budget is $$$$ but its hard to find a good sounding speaker with a $$$ budget. Ideally you want to go and listen to speakers but not everyone lives near a store were ppl can compare A to B speaker and not everyone whats to purchase anything on a lower budgets. But i do appreciate when reviewers take to time to review a non well known brand along with a honest review with views on the internals, to see what you get for the money, where they might have cut back costs etc.
Try to buy PYLON speakers from Poland and they will blow Your mind 😊
I don’t think the ferromagnetic nuts make a difference. After all, you could use completely non-conductive nuts and they would make no difference as long as the threaded rods and tabs aren’t steel. After all, the signal bypasses the nuts through the rods and tabs. Sure, I’d feel better if they were brass or copper, but that’s just palliative.
IEEE did a white paper on ferromagnetic parts in audio connectors and its a good read. Basically the study proved that ferromagnetic parts introduce passive intermodulation, aka 3rd-order harmonics distortion to the signal! Simply put, there's a reason why high end speakers use non ferromagnetic parts in the signal path.
Paper can be read here: ieeexplore.ieee.org/ielaam/22/8681220/8632973-aam.pdf