sorry but this simple passive cannot trasform a bad in a good driver ...is a basic thing
never ask to a business man a basic thing too 😉
Implying something is "bad" without ever having heard it, is not very valid esp since good/bad is subjective, also a basic thing.
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I believe that the yellow surround on the “fake” lii-song 15” fast-15 is cloth. Maybe they’re being called “fast” because of faster break-in time, vs the standard f-15.. (?). I imagine that the regular f-15’s treated paper cone surround, needs plenty of break-in before sounding decent.
LII AUDIO 2021 new FAST-15 full frequency speaker 15 Inch. You can buy on aliexpress.
https://www.aliexpress.com/item/1005004439336269.html
Not according to previous posts claiming Lii Audio doesn't sell on Aliexpress. Alibaba also has a few drivers but again no way to tell if they're genuine or knock-offs. It's a comic mess.
sorry but there is a lot of bad review free of interest on FB in line with speaker size physic and frequency
please look
I watched that on YouTube and don’t find it useful. The reviewer listened to new drivers, apparently without giving them any break-in time.
You have missed the point of much of this thread which is that there are two companies both claiming to be the real Lii Audio. One doesn't sell in China and you can buy their drivers from lii-audio.com. The other only sells in China and you might be able to buy their drivers on Aliexpress. Since US and Europeans and only buy lii-audio.com they think that is the "real" Lii Audio which mostly brands its products as Lii Song now. @caisson rj has argued that the company that only sells in China is the original and better Lii Audio. Nobody seems to have bought and compared drivers from both companies. I will tell you that having bought the Silver 8 and Fast 15 from Lii-Audio.com I do not recommend those drivers and I am confused by the enthusiasm that so many people seem to have for them.
That's not the same driver. Are you paying attention or just bashing indiscriminately? The OP asked about the Fast-15. That is not the Fast-15 it's the F-15. And anyway it's easy to find both like and dislike reviews.
What cabinets did you use them in? And amps used with? It's pretty bad if the specs of the F-15 is soo far off from what's published on their website as the above video review showed (taking his word for it). I hope the Fast-15 isn't also like that.
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I have only used them open baffle. I think the frequency response charts on the Lii-Audio.com site are excessively smoothed at best or flat out fabrications at worst. If you look at their chart for the Fast 15 you see they use a -10 to 110 dB scale which is ridiculous. I also have never seen a frequency response with a sawtooth pattern like that and the idea that a full range driver is essentially flat +-5dB from 40Hz to 18KHz is absurd. https://www.lii-audio.com/wp-content/uploads/2022/09/d88aeca9f599977c6df486e9d8187c7.jpg
your problem. Some people like them some don't. Same as many speakers. Nothing is perfect. I have a pair of 15" Hawthorne coaxials. Also not perfect but i like how they sound.
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Btw this review of the F-15 is laughable. Look at the baffle he is using almost same width as the driver 😂
large baffle work at all frequency as usual