KEF LS50 Bookshelf Speakers - Pair

- Innovation is what sets kef apart. It's why we were founded, and why we've always attracted some of the world's most gifted acoustic engineers.
- The results are plain to see, in long lists of breakthroughs that no other manufacturer can match - and we have the patents and academic papers to prove it.
- Right from the start, we pioneered the use of synthetic materials for diaphragms and driver surrounds to maintain consistent sound quality across the frequency range.
- In the mid-sixties, we were the first to commercially exploit the stability of bextrene as a cone material, with a range of drivers that found their way into many leading audiophile speakers.
- A hugely important breakthrough came a few years later, when kef became the first company to use computers in loudspeaker testing and design.
- Having led the industry in the digital analysis of speaker behaviour ever since, this unrivalled capability is what still underpins kef's technological supremacy.
- The next decade saw the appearance of kef's signature technology, the uni-q point source driver array. Using nasa-developed magnets ten times more powerful than conventional materials allowed us to engineer a tweeter small enough to mount at the acoustic centre of the bass unit voice coil so that both acted as one.
- With the advent of 5:1 home theatre recordings in the nineties, kef was once again ahead of the game by applying the performance advantages of uni-q to the uk's first dedicated centre speaker, the model 100.
- Other kef firsts include the first motorised ceiling speaker and acoustic compliance enhancement technology, which achieves truly full-bodied bass performance from small enclosures.
Kef innovation
- Kef was founded on innovation and new technology.
- We are recognised in the history of loudspeaker development as one of the most important contributors and a great deal of our research has been published at well respected professional institutions, including the audio engineering society and the institute of acoustics.
- Kef's research legacy includes contributions from some of the greatest and most respected loudspeaker designers of the last five decades.
- Today, kef are the company to beat in computer analysis of loudspeakers. The software that we use to run our analyse is also used to power eighty-five percent of the world's super computers.
Product Highlights:
- Reference-level performance in a "Mini monitor" design
- Ideal for a high-end stereo music system
- Uni-q® driver array technology makes your entire room sound like the "Sweet spot"
- 5-1/4" magnesium/aluminum alloy woofer
- 1" vented aluminum dome tweeter
- Frequency response: 79-28,000 hz (±3 db)
- For deep, hard-hitting bass consider adding a powered sub to complement the ls50s
- Sensitivity: 85 db
- High-current amplification from a quality power amp or integrated amplifier is recommended for best performance
- Impedance: 8 ohms
- Recommended amplifier power: 25-100 watts
- Constrained layer damping prevents cabinet rattling and vibrations
- Curved baffle design ensures smooth soundwave dispersion with minimal reflection
- Bass-reflex cabinet with elliptical rear port for accurate, musical bass
- 5-way binding post speaker terminals
- High gloss piano black finish
- 7-15/16"W x 11-15/16"H x 10-15/16"D
- Weight: 7.16 kg. (each)
- Warranty: 3 years
Features & Specs
- Enclosure : bass reflex
- Video shielded : no
- Tweeter type : vented dome
- Tweeter size (inches) : 1
- Midrange size (inches) : n/a
- Woofer size (inches) : 5.25
- Woofer composition : magnesium/aluminum alloy
- Woofer surround : rubber
- Power range : 25-100
- Sensitivity : 85 db
- Impedance (ohms) : 8
- Frequency response : 79-28k hz
- Connector type : post
- Bi-amp inputs : no
- Height (inches) : 11-13/16
- Width (inches) : 7-7/8
- Depth (inches) : 10-15/16
- Weight (kg) : 7.16 each
- Mounting bracket included : no
- Recommended stand height (inches) : 18-28
- Warranty : 1 years
What's In The Box:
- Kef LS50
- Owner's Manual
- 2 Bookshelf Loudspeakers
- 2 Foam Port Plugs
- 8 Self-adhesive Rubber Feet
- Owner's Manual
- Warranty Registration Card