KEF KC92 Powered Subwoofer User Manual

User Manual

KC92

Subwoofer

Introduction

Thank you for purchasing this KEF KC92 powered subwoofer. We are confident that your KC92 will provide reliable, high performance sound for many years to come. Please read this manual fully before you attempt any connection to the KC92.

Inside the box

  x4    x1    x1

Contents vary by region.

Controls and sockets

1. Expansion port
2. Crossover frequency control
3. Phase control
4. EQ
5. High level (speaker) input block
6. Line out high pass frequency (HPF)
7. Power on/ off
8. AC power input
9. Mains indicator light
10. Line output
11. LFE/ Line in smart connect input
12. Mode
13. Ground lift
14. Volume control
15. 12V
16. System button
17. Service port

Positioning

The KC92 is side firing, therefore there should be a minimum of 77mm (3”) clearance between the drivers and any wall.

• Room

• Wall

• Corner

• Cabinet

• Apartment

• Room

• Wall

• Corner

• Cabinet

• Apartment

• Room

• Wall

• Corner

• Cabinet

• Apartment

• Room

• Wall

• Corner

• Cabinet

• Apartment

• Room

• Wall

• Corner

• Cabinet

• Apartment

Low frequency sound can travel through walls and be heard in adjacent rooms. To avoid disturbing neighbors set the EQ to “APARTMENT MODE” to reduce the level of very low frequencies. (Below 40Hz)

Connection to LINE INPUT from a preamp or receiver

SmartConnect
SmartConnect automatically detects if one or two cables are being used, and will adjust gain accordingly to get the full output of the subwoofer. There is no need for the use of a Y-adapter, nor does it matter whether a single RCA cable is plugged into the left or right RCA input for SmartConnect.

Connection to SPEAKER INPUT from a stereo amp or receiver

LFE connection to 2 subwoofers

Stereo connection to 2 subwoofers

Connection to small speakers in a stereo music system

Connection to LINE INPUT from KEF W2 platform speaker

For use with KEF W2 platform speaker set MODE to LFE.
Set the high and low pass frequency using the KEF W2 platform speaker app.

Connection to 12V input from a preamp or receiver

Connection to KW1 Wireless Subwoofer Adapter Kit (Optional accessory)

Please refer to the detailed setup in KW1 user manual.

Manual controls

Crossover Frequency Control
The crossover frequency control changes the upper cut-off frequency of the subwoofer. Its effective range is from 40Hz to 140Hz at a rate of 24dB per octave.
The frequency control should be adjusted to achieve the smoothest integration between the main/satellite speakers and the subwoofer. Clockwise rotation will increase the cut-off frequency and anti-clockwise rotation will decrease the cut-off frequency.

Combined Output    Subwoofer Output

       Satellite Output

1. Ideal crossover – flat response.
2. Crossover point set too low – causes dip in combined response.
3. Crossover point set too high – causes hump in combined response.

LFE mode should be used if using the subwoofer for the LFE (.1) channel in home theatre, as well as when bass management/crossovers are set in an AV receiver, preamplifier, active speaker system or similar.

Volume Control
The volume control adjusts the output level of the subwoofer in relation to the satellite or AV speaker output level. Clockwise rotation to increase the output level or anti-clockwise to decrease the output level.

Phase Control
The phase control will normally be set at 0º but more output level can sometimes be achieved in the 180º position, particularly when the subwoofer is far away from the satellite speakers.

1. Always on
2. Auto wake up
3. 12V

Mode control
There are three power modes. To switch between these modes, utilize the selector switch located on the back panel of the subwoofer. Please note that power consumption may vary.

Auto Wake up
It allows the subwoofer to automatically power on when it detects an audio signal.
To save power, the subwoofer will turn off after 20 minutes of inactivity. If you use the subwoofer with KEF W2 platform speakers, you can turn on and off both devices simultaneously by enabling the ‘Force sub wake-up’ feature in the KEF Connect app.

Always On
In this mode, KC92 will always be on and will not go into standby. To turn the subwoofer off, use the main power switch.

12V
This is used when the KC92 12V trigger input is connected to the 12V trigger output of a compatible amplifier or receiver. When the connected equipment is switched on, KC92 will also be turned on automatically.

Firmware update

Your subwoofer features a dedicated service port that allows for potential firmware updates. By keeping your firmware up to date, you can ensure that your subwoofer has the latest features and improvements. To perform a firmware upgrade, please follow the steps below:

1. Visit KEF’s official website at KEF.com.
2. Locate and download the firmware upgrade software tool specific to your subwoofer model.
3. Carefully read the instructions provided with the firmware upgrade software tool to ensure a successful upgrade process.

Specifications

RCA phono sockets
Speaker level inputs
Power requirements| 100-240 V ~ 50/60 Hz
Power consumption| 1000W (operating power)
<0.5W (standby power)
Dimension (H x W x D)
with Rear panels and Feet| 352.5 x 330 x 360.5 mm
Weight| 20kg
Optional accessory| KW1 Wireless Subwoofer Adapter Kit

Visit: KEF.com for more about KEF and its products.
KEF reserves the right, in line with continuing research and development, to amend or change specifications. E&OE.

GP Acoustics (UK) Limited
Eccleston Road,
Tovil, Maidstone
Kent, ME15 6QP
UK

P/N: 4301-7640+2

KEF.com

References

• KEF US | KEF USA

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