KEF Audio 290149ML installation manual English Instructions, Fault Finding

6.ENGLISH INSTRUCTIONS

5 Controls and sockets

KHT Subwoofer Rear Panel
1.	Line in input sockets
2.	High pass output sockets
3.	Ground In / Out
4.	Level control
5.	Music / Cinema
6.	Crossover Frequency control
7.	Slope
8.	Phase control	Power ON
9.	Mains indicator light

Power OFF

10.Auto/manual switch

11.‘ON/OFF’ switch (Vacation switch)

12.AC power input (230V Euro SP 3333 (230V UK SP 3333 AC) (115V US SP 3333 AB)AA)

8 Positioning

As the sub-bass (low frequency) sound produced by the subwoofer is non-directional it can be positioned almost

anywhere in the room, although it should not be placed too close to the listener. If possible try the subwoofer in different positions to find the best place for a boom-free sound.

9 Connections

frequencyF ont speakersrange. full range - speakers capable of producing full

A.Line Level - connected to amplifier processor loop.

B.Linesinglevel inputs - connected to subwoofer output on amplifier

by (C1) or ‘Y’ (C2) cable.

10 Adjusting the controls

AThe. FrefrequencycontrolControlchanges the upper cut-off frequency of the subwoofer. Its effective range is from 40Hz to 140Hz at a rate of 12dB/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.

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.

BThe. PhasephaseCcontrolwill normally be set at 0° but more output level can sometimes be achieved in the 180° position, particularly when the subwoofer is far away from the satellite speakers.

CThe.Vvolume Controlcontrol 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.

DIt .enablesAuto/Manual/ disablesSwitchyour subwoofer in standby (mute). Setting this switch to Auto position, the subwoofer will go to standby automatically if idle for 45 minutes. It resumes working immediately after an input signal is received. If Manual is set, the unit will not go to standby even when there is no signal input.

Enhances. GroundcompatibilityIn/Out . Used to break possible earth loops which cause audible hum.

FThis. Music/Cinemaswitch selects one of two characteristics: Music is selected to give deep, clean bass; Cinema is selected to give cinematic impact.

GUsed. Slopeto adjust transition between speakers and subwoofer.

Fault Finding

FAULT	REMEDY
Mains indicator light does not come on.	Check that the subwoofer is plugged into the mains supply and that any switches are on.
	Check any fuses (including the plug) or circuit breakers on the mains supply which may effect the
	power to the subwoofer.
	Contact your dealer for further advice.
If the mains indicator light still does not come on.	Ensure that all equipment is switched on.
If the mains indicator light is on but no sound	Check and adjust the level control.
comes from the subwoofer.		Check that the output sockets on the source equipment are correctly switched and
		adjusted to provide sufficient level to drive the subwoofer.
		Check that all connections between the subwoofer and the source equipment are
		correct and adjust as necessary.
If there is still no sound.		Contact your dealer for further advice.

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