These could be but might not be usable at all with the small Reisong Amp. It is a 15" not impedance equalized etc. driver. You did use it with the entry level amplifier, that Reisong El34, correct?

Do tbe Skunke mods. It will take this to another level. I plan to do the triode switch too.

i never trust a manufacturer that displays a 10db graph

Yak yak yak….build good baffles and actually listen to them. Just a bunch of bullshit yak.

I use it with filters, I find little differences between filters, but without it, sounds harsh.

Thank you for the review sir. Do you think W-15 will have the same good low end? Do you think it will be a good mid bass driver followed by a compression driver from 1-1.2kHz? If F-15 and W-15 have a same magnet and a membrane this could be possible I guess

If this is your reference then I don't know what Lii f15 you bought. I've heard the Sibelius( Alpair 10.3) speaker in the same room next to my open baffle Lii F15. And I can tell you I would not change my Lii's for a Sibelius. You did something wrong with those.Adding a tweeter to a full range speaker makes no sense btw. grtz. Groetjes

My Lii F15 are the best that happen to me, obviously not everyone got their ears tuned, keep measuring bro!

Hey, great video! I was wondering if I could use a 0.01uf bypass cap for the coupling cap. Would the difference be noticeable? These Duelund's seems like a perfect choice, but they go up quickly in price as you go up in capacitance... Looking at some silver foils which have excellent reviews. And one more question (I'm a modding enthusiast and have 0 knowledge whatsoever) does it have more impact to directly replace the orange cap or bypassing it? Thanks again!!

Great but I want to build a 12 or 15 open baffle sub woofers

939Productions thanks for providing clarity. I'm curious which equivalent on the market (old or new) would you recommand instead of these? Thanks.

Wich filter are best? I think F 6

Hi, thanks for your share, the version I have has the circuit board, yet my question relates to rhe push button input selector, I have noticed it to impact sound quality, with some rustle and contact noise, ..anyone else found this, ...I only use one input, ..so was thinking might be better to just remove that little board and wire direct to RCAs. Thank you .. I love this little amplifier tho ...it is a wonder..and drives most all spkrs I have tried well.

I appreciate your video but you need to objectively listen, im not any better or as good, but kinda boring

Tried different speaker cables? If people don't believe in speaker cables, nothing I can say will convince them. But for what it's worth, IMHO My Decware ZF15M clones sound pretty bad on one cable but excellent on another. Just a personal observation -- take it as you will.

Cadê os alto falantes tocando?

I had them in one baffle OB config and they didn't sound very good. I made a 10 inch deep open-back box and they sound better than anything else now.

Have them 7 months now and they sound amazing.Combined them with a good tube amp .Just amazing.Better than my Magnepan 1.7i' s.

hi , in my a10 , i stuck with 0.22uf when replacing the fake philips orange drop interstage capacitors (which are best used in guitar amps for their tonal distortion) , as that is the correct value for the circuit , i went with high quality paper in oil 600v 0.22uf and opted not to bypass the interstage caps as this creates a high frequency filter which is bad as it robs this amp of one of its talents , honest and sparkling top end . bypassing to remove noise is actually masking noise from elsewhere in your system and may be pushing up the mid range with the impression of reduced bass . the a10 should be silent at idle or between tracks . i replaced the cathode bypass cap of the el34s with a rough foil non polar from visaton connected with outer foil to ground and bypassed it with 0.1uf polycarbonate 400v (this was almost as big an improvement as the interstage cap replacement was ). 12ax7 adapters fitted with golden dragon 12ax7-T (ecc83-T ) cheap and good tubes , el34 replaced with treasure 2 6ca7 (getting a bit pricey now but worth it , mine are 7 years old ! ), replaced the power switch with an input selector switch and new, longer silver screened cable from van damme balanced microphone cable and left the screens floating to the new selector which is a Taiwan alpha 6 position (pegged to 4 position) 2 pole switch with rca sockets added for 4 inputs. fitted a toggle type appropriately rated power switch front and centre on the chassis , replaced the volume pot with an alps blue . using melo david L.cao 6" drivers which are 93db@1w@1m in 45L bass reflex cabinets with ribbon super tweeters crossed in at 12khz . massive sound and goes very loud with solid bass down to below what my speakers can reproduce with amazing clarity . will be trying some 96db drivers in a rear horn loaded cabinet soon. a stunning little amp for the price . worthy of note : do one modification at a time and try the results , the orange drop caps need to go as they are sapping the amps potential , the tube replacement helps but is not essential as even the shuguang el34b sounds great with the interstage caps replaced by better items . there was a newer version of the a10 called the a12 which has 12ax7 pre stage and 5ar4 rectifier and cornell dubilier interstage caps as standard. valve equipment carries large voltages so please , BE CAREFUL and get someone who knows what they are doing if you are not confident . have fun 😘

A 15” can’t be used with a whizzer for several reasons. A 15” can’t go high enough to meet up with the whizzer (as you’ve discovered) but a 15 suffers from poor off axis response above, say, 600 hz as well.

After so many positive reviews of the F-15 this is the only negative one I've found. With speakers I trust what I hear.

The latest edition of the F-15's have an improved motor and I love mine!

What is the best full range drivers under $1000 for a pair in your opinion?

I ran a few sweeps on my F15 in Declare designed Zenmaster baffles. I found a very similar spl curve. The drop at 3-4k was so marked, I assumed I had some kind of problem with my testing setup. (I am a complete novice.) Similar hump following. I sent the curve to Lii audio asking if they thought there may be an issue with the speaker. I never heard back. ( maybe they never received the email) I plan to retest in the near future and compare results after hundreds of hours of use. I should add, much of the harshness is gone. I cross with a single sub at 250. I do find the sound quite good at this point with my impression of greater clarity and richness crossing at 250.

You thinking that's bad Im using a guitar speaker as part of an open baffle 3 way speaker so anything is good to me 🤣 at least your look nice though 👍 loved the video

Will the circuitry handle KT88s?KT120s?

I have a set of these in open baffles which are better than my spatial audio speakers which cost 5 times the price which I sold in place of the F15s. I believe your impressions would dramatically change if you did a better job on baffle design. The joy of these speakers is in building and modifying baffles until you tune them to your taste and room.

Styrofoam tents to ring.

Have you tried the foam tweak between the whizzer and the main cone? This should maybe help with the suckout. And then an LCR filter for the high frequencies. I wonder what the results would be with a bit of tweaking.

What is your reference speaker?

I'm glad to see real measurements! From manufacturer you think this speaker is flat 20hz to 20 khz! Lol

I need to you use 300b tube integrated so I will stick with my search for Klipsch Cornwall IVs!

They do take 200 hours for break in... :-) Do not judge from out of the box...

No fake! Lii Song is original and only for the european market... Lii Audio wrote me a mail yesterday...

Just want to let people know i tried making a diffuser with formular 150 and it appears to act more like an absorber. I’m going to try one out of wood next to compare the materials.

Talk much!!

I guess a missmatch with your SE tube amp... Cant controll the speaker... try more power! PP 30Watts maybe or the Yamaha A S700... :-) Dont judgw with SE tube amp only... :-)

Did the crossover affect the timing of your speakers noticeably?

How do you compare the wood vs the foam diffusers? I am trying to build with foam to save cost and weight but fear that they are absorbing too much.

Thank you

Thank you very much for this review. My KZfaq feed has been getting completely saturated with reviews (basically adverts) for these speakers. Had my doubts about these and now you have confirmed my suspicions. I just hope now they will quit trying to “sell” these to me cause there is no way I will ever buy them!

My recommendation for full range drivers are from Cube Audio, Supravox, Mark Audio or Sonido.

I just got mine hooked up the other day so they are still breaking in but Bass thru my TUBE Primaluna amp is playing them wonderfully with as good of bass as I expected. Don't know what tube amp you're speaking of but its the wrong one.

I want to adres the comments regarding the authenticity of the drivers I have. I have Lii Song branded drivers. These are supposedly fakes. There are two labels out there from what i have found. One that says lii audio with a red top 1/3 with the bottom saying "lii audio of hangzhou. china" and a lii song with a green top 1/3 with the bottum 1/3 saying "lii song of hangzhou. china" The resonant frequency is 50Hz on the lii audio and 37Hz on the lii song The lii audio branded drives are seen with a black foam surround and a wooden phase plug. Lii song branded drivers are seen with gray surrounds and a orange transparant phase plug. The rest of the construction seems to be the same. Presented spec sheets are the same on sites like "lii-audio-europe.com/", "www.lii-audio.com/", "aliexpress.com" and taobao The first two sell the lii song branded speakers. The Chinees sites sell multiple branded drivers with a mix of surrounds, phase plugs and magnet cup. Now the story on the Lii-audio.com site the story is this: "Lii Audio / Lii Song has been found in 2016, by the rear of beautiful Xizi Lake in Hangzhou, China. The company concentrates on designing and developing many types of high quality full-range audio speakers. The sound is artistic, we hold in belief that only by achieving a perfect design, insisting on handmade craftship and sound adjustment with restricted exigences can a speaker be made enchanted with art and life. We are devoted to provide to music amateurs worldwide a feast of exquisite hearing experience. Since the year 2020, for unifying our brand name for global market, we use Lii Song brand name in addition to Lii Audio as to establish unified brand recognition for both domestic and international markets." On the lii audio flagship store on aliexpress they sell 2 different versions of the f15 and neither can be found on site mentioned earlier. This seller sells allot of different drivers all branded lii audio but with a entirely different label as first two I mentioned. This rabbit hole goes deep. My personal thoughts on this. I think that lii audio and lii song are the same company. The drivers are more or less the same. Hifi Cave reviewed the lii song branded speakers and he liked them. I don't and that is fine. I will change the video title to lii audio/lii song since I believe these to be the same from my own research.

Your brought a pair of fake (F15) bro.. I purchase directly from taobao china website, the driver label is Sky Tone of Hangzhou China, Lii Audio not Lii Song, mine is sounds good no distortion and clarity even with low watts tube amplifier

Are these Lii Audio brand , or Lii Song brand?

There are many variables that contribute to the final sound. I've had the F15's in an open baffle configuration and what I hear are very different from yours, especially in the midrange. You do not provide any context of your other components during the evaluation, which contributes to the sound you are describing. Without that context, this review is not particularly helpful.

Hi I wonder if you can design and make crossovers for my three way open baffle speakers or maybe you know somebody who can do this job. I'm from New Jersey

Great review! Have you, by chance, heard any of the full range speakers from Omega? I'd be very interested to hear your take on them, and how you thought they compared to the Lii drivers.

Where did you purchase them? There is a controversy between authentic and fake. Do you have pictures of the label?