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19 

 

B

ASIC 

S

OUND 

S

ETTINGS

 

For detailed explanations on the individual setting adjustments, 
please consult the 

EXPERT SOUND SETTINGS

 section. 

 

Where Is Your Speaker? 
On a Stand/On a Desk:

 Bass 

and midrange response will vary 
depending whether the speakers 
are placed on a desk or tabletop. 
(

Advanced: Desk Mode

 

Distance to the wall

 

Bass response can be affected by 

the speakers’ proximity 

to a wall 

(especially behind them). This 
setting adjusts to compensate for 
that.  
(

Advanced: Wall Mode

 

How is your room?

 

Damped 

rooms tend to reduce 

bass response, while 

Lively 

rooms 

will accentuate high frequencies 
making them sound harsh. This 

setting compensates for that. (

Advanced: Treble Trim

)  

 

How large is your room? 

In smaller rooms bass can get overwhelming, changing the balance 
of an audio program, while in larger rooms the bass may get lost, 
resulting in too much treble. (

Advanced: Bass Extension

 

Subwoofer plugged in

 

Please consult Section 16 

 Subwoofer Operation for details on 

this setting. 
 

E

XPERT 

S

OUND 

S

ETTINGS

 

 
Desk Mode

 

A horizontal surface in front of a speaker can act as an additional 
front baffle altering the frequency response of the speaker. The 

Desk Mode 

adjustment attenuates frequencies centered at 

approximately 180Hz (50Hz to 500Hz) in ½ dB steps to 
compensate for reflections when the speakers are set on a table or 
desktop. 
 

Wall Mode

 

LSX is a rear-ported speaker, meaning that bass frequencies 
emanate from the rear of the speaker, enhancing overall bass 
response. In some setups, when the speakers are placed close to a 
rear wall or enclosure, bass response can be artificially elevated. 
The 

Wall Mode

 

adjustment attenuates frequencies from 

approximately 300Hz and below (the bass region) in ½ dB steps to 
minimize or eliminate artificial bass response caused by reflections 
from the rear wall or vertical surface. 
 

Treble Trim

 

Room environments vary, depending on several factors, from lively 
to dampened. The 

Treble Trim

 adjustment boosts or attenuates 

frequencies from 900Hz and above (the mid- and high-frequency 

region) in ½ 

dB steps to compensate for your room’s 

sonic 

environment. 
 

Room Types 

Lively 

High ceilings, hard surfaces like marble, hardwood 

floors and glass. Furnishings are not large.    

Moderate 

A mixture between the two. 

Dampened

  Low ceilings, carpeted floors, heavy drapes, walls 

with art and decorations. Furnishings are large 
and cushioned heavily. 

         

Summary of Contents for LSX

Page 1: ...LSX Owner s Manual EN This manual explains setup preparation and operation of the LSX Music System...

Page 2: ...lume Limitation 13 Speaker Information 13 Send Logs Information 13 Section 6 KEF Stream App Pg 14 KEF Stream app Media Servers Section 7 Wi Fi Pg 15 Wi Fi Introduction Router Requirements Section 8 Bl...

Page 3: ...Control and Stream App Section 18 Care Cleaning Pg 27 Modern Lifestyle White MYS Edition Olive Green Red Blue Contemporary Classic Audiophile Black versions Section 19 Troubleshooting Guide Pg 28 Trou...

Page 4: ...regions may vary Due to product improvements specifications and appearance are subject to change without notice Icons and their meanings Indicates use precautions and feature limitations Indicates ti...

Page 5: ...SX you can tailor the sound of your units to your taste or to correct audio problems within your listening area page 18 MULTI ROOM CONTROL With Apply Airplay2 and Roon you can control multiple devices...

Page 6: ...will slowly alternate between amber and white While LSX is connecting to your network the Master Speaker indicator will turn amber and pulse on and off OPEN KEF CONTROL APP Master speaker indicator sl...

Page 7: ...e successfully connected your LSX to your local network and the KEF Control and Stream apps you are now able to set sound profiles for your various listening sources Please see page 19 for further inf...

Page 8: ...AL TOSLINK optical audio cable input for connection to television optical output May also be used for audio devices with optical outputs such as CD players AUX Analog audio input Connect to audio devi...

Page 9: ...e you are situated The new 4 Uni Q driver array is the same signature KEF technology used throughout KEF s speaker line Uni Q has been in constant development since 1988 Through precise positioning of...

Page 10: ...udio output A precise on board clock controls the timing between the left and right channels whether in Cable Mode or when using KEF s proprietary on board Wi Fi network for complete wireless operatio...

Page 11: ...firmware updates User profiles and individual sound settings The KEF Control app is available as a free download from either the Apple App Store or Google Play From time to time KEF releases updates...

Page 12: ...z 24 bit resolution streaming switch CABLE MODE on and attach the Cat6 interspeaker cable included in the LSX accessories pack CABLE MODE must be selected in the Control App and the interspeaker cable...

Page 13: ...AC Address Media Access Control address is the network address of the device IP Address Internet Protocol address of your LSX Speaker Serial No The factory issued serial number of your LSX Firmware Ve...

Page 14: ...work connected storage devices These devices may include a Network Attached Storage device NAS Server a connected PC or other storage device that resides on the same network as your LSX From the main...

Page 15: ...ansmission speed ROUTER REQUIREMENTS There are two router bands available on most current network equipment 2 4GHz and 5GHz Most standard routers supplied by your cable or internet provider will be Du...

Page 16: ...ere are apps available that allow you to check which channels are available and what your network signal strength is These may help you set up the best possible streaming environment for your LSX 8 Bl...

Page 17: ...like to connect a USB audio device such as a PC or laptop to LSX use a commercially available USB to Optical converter not included and select the Optical input as described above 10 AUX Analog Inputs...

Page 18: ...ering feat added to the DSP allows LSX to produce near perfection in time alignment and musical reproduction You can toggle the Phase Correction operation on and off in the KEF Control App Advanced Mo...

Page 19: ...l front baffle altering the frequency response of the speaker The Desk Mode adjustment attenuates frequencies centered at approximately 180Hz 50Hz to 500Hz in dB steps to compensate for reflections wh...

Page 20: ...Allows you to control the subwoofer volume from the KEF Control App For best results turn the volume control on the subwoofer past the highest position you would be likely to use This will allow you t...

Page 21: ...r with a router that cannot keep up with the bitrates necessary for High Resolution streaming dropouts and delays may occur In this event please select either the Normal or High streaming quality sett...

Page 22: ...96kHz 24 bit with LSX while using the power of the Internet to compile photographs biographical material reviews and the latest news from the artists you are listening to LSX communicates with Roon an...

Page 23: ...EF Kube to LSX via a simple RCA type pin jack located on the rear of the Master speaker Subwoofer volume crossover and phase can be controlled from the KEF Control App KEF CONTROL BASIC From the KEF C...

Page 24: ...e updates are available KEF Control and Stream Apps As new versions of the KEF Control and KEF Stream Apps are released please update via the Apple App Store or Google Play HOW TO UPDATE THE FIRMWARE...

Page 25: ...ne call or text during the operation Avoid allowing your device to enter sleep mode during the update operation 4 Depending on network environment and the size of the update the update may take up to...

Page 26: ...l reboot to allow the update to take effect 4 After the update is complete and the speakers have been re booted the operation is complete If for any reason the update fails at any point during the pro...

Page 27: ...spills with an absorbent cloth or paper towel Do not rub the cloth to avoid leaving further residue in the fabric Remove non greasy stains by carefully dabbing the stain with a lint free cloth or spon...

Page 28: ...g 3 Exit the KEF Control App 4 Unplug the power cable from the Master speaker and wait 60 seconds before plugging it back in 5 The Master speaker indicator should be alternating orange white indicatin...

Page 29: ...ify Alternating Blue Magenta Yellow White Firmware update mode Red Blinking Firmware Upgrade Failed Restart procedure If problem persists contact Customer Service Alternating Blue White Bluetooth Pair...

Page 30: ...error unplug for 10 minutes reconnect to power and perform factory reset REPORTING ISSUES Networked products are complicated and often issues may appear to be related to the LSX system while they are...

Page 31: ...oth resolution is standard up to 48kHz 24 bit LSX converts analog program material to 96kHz 24 bit before streaming Playback will be set to 48kHz 24 bit for wireless streaming not in Cable Mode APPEND...

Page 32: ...etooth Pairing 0x98 Discrete Mute 0x48 Discrete Mute Unmute 0x20 Toggle Next 0x52 Toggle Bluetooth mode only Optical Source 0x0A Discrete Pause 0x70 Discrete Play 0x6A Discrete Play Pause 0x18 Toggle...

Page 33: ...APPENDIX D SYSTEM BLOCK DIAGRAM...

Page 34: ...34 APPENDIX E SYSTEM SPECIFICATIONS...

Page 35: ...owned by Bluetooth SIG Inc and use of said marks is under license Is a trademark of Savant Systems LLC Registered trademark of Intrinsic Dev UK a Core Programming Company UPnP is a trademark of the Op...

Page 36: ...coustics Published 02 2019 Doc Revision R01 Main Sites KEF Global Site www KEF com KEF US www us KEF com KEF Canada www ca kef com KEF Direct www kefdirect com Product Support and Downloads http us ke...

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