One Pair | Recommended 15″ Full Range Speaker Driver | Fast High and Scaled Sound | F-15

$499.00 $399.00 excl. VAT (EU)

Rated 5.00 out of 5 based on 8 customer ratings
(8 customer reviews)

Technical Data: 
1. PMSE-Free 1.35 Ohms
2. Fs 49.6 Hz
3. Re 6.56 Ohms(dc)
4. Qes 63.78 Ohms
5. Qms 7.45
6. Qes 0.78
7. Qts 0.71
8. L1 0.11 mH
9. L2 0.47 mH
10.R2 3.57 Ohms
11.RMSE-load 0.85 Ohms
13.Vas(sd) 178.5 liters
14.Mms 13.70 grams
15.Cms 1473 uM/Newton
16.Bl 5.92 Tesla-M
17.Splref(sd) 97.2 dB(Re)
18.Rub-index 0.5

Method: Mass-loaded (13 500 grams)

Area (Sd): 146.56 sq cm

Drc mode: Measure (-0.80 ohms)

Qc file: CLOSED

Weight: 11KG


This F-15, 15″ Full range speaker driver is another one of our recommended product. It achieves a really high performance while keeping in a low cost, which makes it product of the best price-quality ratio among all our drivers. It sounds smooth and fine in mid-high range whereas vigorous in low frequency, which makes it an outstanding choice for enjoying orchestra and traditional songs. Try this and get yourself amazed by how such a big thing can manage so well and so sensitive in handling mid-high range but still keep the natural good outcome for big drivers in low frequency.



15" full range speaker driver F-15 technical data

Additional information

Weight11 kg
Dimensions45 × 45 × 45 cm

8 reviews for One Pair | Recommended 15″ Full Range Speaker Driver | Fast High and Scaled Sound | F-15

  1. Rated 5 out of 5

    Pascal Dubois

    Reçu il y a un mois et je décide de laisser mon compliment, car pour une paire de 15″ à ce prix on n’attend pas de grande chose surtout pour la haute fréquence mais celle-là dépasse incroyablement l’attente! Qualité invincible à ce prix et ça explique l’épuissement constant…

  2. Rated 5 out of 5

    Nimes Haslowel

    Pity that I only took this instead of the promotion of Crystal-10 and this together for the price for one. It is amazing how a 15″ can sound so lovely in high range and no need to compensate with a woofer. A magic of music. Really wondering how well Crystal-10 can perform judging on a basis of this 15 inch driver! Saving bucks now for a pair of Crystal-10 and hope the promotion will still be available when I’m able to buy.

  3. Rated 5 out of 5


    I am located in the USA. I received a pair of F15s. Packing was very good. I listened to the speakers open baffle. I am very impressed with the sound, construction and appearance of the speakers. The customer service at LII Audio has been great. They provided me with a drawing for ported boxes for the F15s, which I am building now. I ordered a pair of Crystal-10s I am looking forward to receiving. My amp is pretty smooth. It has clarity cap CMR capacitors. I expect great results from the LII Audio products. Thank you LII Audio for the great products and service.

  4. Rated 5 out of 5

    adjasc (verified owner)

    I’m running a pair of these open baffle and the are the biggest, densest sound I’ve heard. I do use bass equalization to boost the lows, which for me is essential to really dig deep. The high efficiency is a real plus. These sound great at any volume.

  5. Rated 5 out of 5

    theumbrellacorp (verified owner)

    I added these to a set of open baffle modular frames. Power by a set of 8W/ch Acuhorn M2’s these sound amazing. The bass is very expressive, not terribly loud but you hear it. The sound is open and the sound stage massive. These are very fun to play with and sound even better.

  6. Rated 5 out of 5

    KGPiano1981 (verified owner)

    These drivers are exceptional. I am running them on large open baffles (modeled after the Decware Zen Master speakers – which by the way; there is a LOT of information on these speakers on their forums). They *need* break in time – the sound has smoothed and settled quite a bit in the first 250 hours of use. I am powering them with a Elekit TU-8600 300B SET amp that I built last year, and it’s a great combination. Music of all styles has never sounded better in my room. I can play small scale jazz as well as large scale classical, and it’s incredible what these drivers can do. Sound is effortless, open, and imaging is pinpoint on excellent recordings. Thank you, Lii audio for your dedication to wonderful products. Keep up the excellent work!

  7. Rated 5 out of 5

    craig4tone (verified owner)

    I have heard a lot of speakers in my time and these drivers in open baffles are simply amazing and probably one of the top 5 speakers I have ever heard! I am running them with a Tubelab SE tube amp running 45’s. I was worried about the bass but there is plenty there and unless you are listening to organ or electronic, you aren’t missing anything. Most fullrange speakers fall on their face with complex passages but these can keep up with any orchestral composition you play on them. As much as it pains me to say this, these will probably replace my highly-modified Klipschorns in my music room. I’ll probably add the W15 in an open baffle sub to complement the low-end and also plan to experiment with Fostex T90A’s to fill in the top. Built quality is excellent, speakers packaged very well and shipped quickly. HIGHLY recommended!

  8. Rated 5 out of 5

    migoblue2014 (verified owner)

    Only about 50 hrs on them, but, wow! Yes they are a bit rolled off, but you need to hear above 15k or so to notice it much. On most music, you won’t care because down to about 60 hz, (open baffle), these are so coherent and large. Very good rendering of space and flesh to notes. Upper base weight and tone are excellent. I assume this will continue to improve. My 60 w tube amp is too much., because these things need 10 watts max for full scale dynamics in a medium room. Very sensitive…underrated. I am thrilled. I’m selling my Legacy Focus speakers.

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