Workshop Manuals Factory service & repair Land Rover
01 Discovery Series II - Workshop Manual - 1999MY ON - 6th Edition - NAS02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 INTRODUCTION32 33 GENERAL INFORMATION34 35 GENERAL DATA36 IDENTIFICATION NUMBERS37 38 TORQUE WRENCH SETTINGS39 40 LIFTING AND TOWING41 CAPACITIES, FLUIDS, LUBRICANTS AND SEALANTS42 43 44 MAINTENANCE45 46 ENGINE - V847 48 EMISSION CONTROL - V849 50 ENGINE MANAGEMENT SYSTEM - V851 FUEL DELIVERY SYSTEM - V852 53 COOLING SYSTEM - V854 55 MANIFOLDS AND EXHAUST SYSTEMS - V856 57 58 59 CLUTCH - V860 61 MANUAL GEARBOX - R38062 63 TRANSFER BOX - LT230SE64 65 66 AUTOMATIC GEARBOX - ZF4HP22 - 2467 PROPELLER SHAFTS68 69 REAR AXLE70 71 72 73 74 75 FRONT AXLE76 77 78 79 STEERING80 FRONT SUSPENSION81 82 83 REAR SUSPENSION84 85 86 87 BRAKES88 RESTRAINT SYSTEMS89 90 DOORS91 EXTERIOR FITTINGS92 93 INTERIOR TRIM COMPONENTS94 SCREENS95 96 97 SEATS98 99 SUNROOF100 CHASSIS AND BODY DIMENSIONS101 102 103 104 PANEL REPAIRS105 106 107 108 BODY SEALING MATERIALS109 110 111 112 113 CORROSION PREVENTION AND SEALING114 PAINTING115 HEATING AND VENTILATION116 117 AIR CONDITIONING118 119 WIPERS AND WASHERS120 CHARGING AND STARTING121 122 LIGHTING123 BODY CONTROL UNIT124 125 126 ALARM SYSTEM AND HORN127 128 WINDOWS129 IN CAR ENTERTAINMENT130 HARNESSES131 DRIVING AIDS132 NAVIGATION SYSTEM133 INSTRUMENTS
Land Rover Discovery II129 · IN CAR ENTERTAINMENT
129 · General

IN CAR ENTERTAINMENT: DESCRIPTION AND OPERATION

Make
Land Rover
Model
Discovery II
Section
DESCRIPTION AND OPERATION
IN CAR ENTERTAINMENTDESCRIPTION AND OPERATION · page 1 of 4
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IN CAR ENTERTAINMENT

DESCRIPTION AND OPERATION 86-6-11

Automatic volume control (High line system only)
An automatic base and treble volume control feature compensates for increases in interior road/transmission noise. 
A road speed signal is monitored by the power amplifier, the signal is supplied by the SLABS ECU.
 

 + 

 BRAKES, DESCRIPTION AND OPERATION, Description.The power amplifier boosts the levels of base 

and treble as road speed increases. This system ensures that the apparent volume of sound remains constant and is 
not affected by increases in the background noise in the vehicle.

Speakers
 Some vehicles will not have all the speakers, the type and location of speakers fitted depends on the trim level and 
ICE options specified for the vehicle.

A-post speakers LH/RH (if fitted)
The A-post speakers are located in the A-post trim on each side of the windscreen, and are each protected by a metal 
grille. The speakers are held from the rear by a bayonet clip that clamps the speaker on to the A-post trim. The A-post 
speakers are a high range type and have a power rating of:

l

Mid line system A-post speakers have a power rating of 15 watts and an impedance of 4 

Ω

.

l

High line system A-post speakers have a power rating of 30 watts and an impedance of 4 

Ω

.

Upper front and rear door speakers LH/RH (high line system only)
The upper door speakers are located in the upper door trim, the speaker is protected by an integral metal grille. The 
speaker is held in by a threaded ring that clamps the speaker from the rear onto the door trim. The upper door speaker 
is a mid-range type and has a power rating of 30 watts and an impedance of 4 

Ω

.

Lower front  door speakers LH/RH
The lower front door speaker is located in the front end of the lower (pocket) trim and is secured by three self tapping 
screws. The speaker is protected by a clip on circular metal grille. The type of lower front door speakers fitted depends 
on trim level and market:

l

The base and mid line systems are fitted with full-range door speakers with a power rating of 15 watts and an 
impedance of 4 

Ω

l

The high line system is fitted with a low-range door speaker with a power rating of 30 watts and an impedance 
of 4 

Ω

.

Lower rear door speaker LH/RH
The lower rear door speaker is located in the lower door trim and is secured by three self tapping screws. The speaker 
is protected by a clip on metal grille. The type of lower rear door speaker fitted depends on trim level and market:

l

The base and mid line systems are fitted with full-range door speakers with a power rating of 15 watts and an 
impedance of 4 

Ω

l

The high line system is fitted with a low-range door speaker with a power rating of 30 watts and an impedance 
of 4 

Ω

.

Low range tail door speakers (high line system only)
The low range tail door speaker are located in a plastic casing in the lower door trim. Each of the two speakers is 
secured to the casing with four self tapping screws. The casing is secured to the lower door structure with eight bolts. 
The tail door trim surrounds the casing, the front of the casing is covered by a metal grill that is secured with six 
screws.  The low range tail door speakers have a power rating of 30 watts and has an impedance of 4 

Ω

.

DESCRIPTION AND OPERATION

Parts & tools for this job Staging For Land Rover Discovery

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