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Channel Selector

The Quad AMPBUS system carries channels for normal stereo signals as
well as the centre, subwoofer and rear channels required for AV
applications. 

The rotary switch on the back of the amplifier should be used to select the
appropriate channel. These channels are:

CH1 

Stereo Left 

CH2 Stereo Right

CH3 Rear 

Left

CH4 

Rear 

Right 

CH5

Centre

CH6 Subwoofer

The INPUT setting selects the RCA phono input. This setting should be
used only when the amplifier is used with non-Quad 99 series equipment.

System connections using AMPBUS and the 99 Stereo Power Amplifier

Each  amplifier has two AMPBUS sockets on the rear panel. Plug an
AMPBUS lead into the upper socket of the  amplifier. The other end should
be plugged into the AMPBUS socket of the Quad 99 preamplifier or AV
processor which will be sited above the units.

System connections using AMPBUS and the 99 mono Power Amplifier

Under normal circumstances, two 99 mono amplifiers will be used as the
left and right channels respectively of a stereo installation, as part of a Quad
99 system. 

Place one amplifier on top of the other. 

Each  amplifier has two AMPBUS sockets on the rear panel. Plug an
AMPBUS lead into the upper socket of the upper amplifier. The other end
should be plugged into the AMPBUS socket of the Quad 99 preamplifier or
AV processor which will be sited above the units.

The other AMPBUS lead is connected between the lower AMPBUS socket
of the upper amplifier and the upper socket of the lower amplifier so that
you have a daisy chain. AMPBUS sockets are alternately male and female
so this should be relatively straightforward.

Note:  Always check that the channel selector has been positioned correctly.

Bi-Amping for Mono or Stereo Amplifier

The AMPBUS system is both simple and versatile. By using the AMPBUS
system, you can add two more 99 mono amplifiers for bi-amping. As all
Quad 99 series amplifiers are gain matched, you can use a pair of 99 mono
amplifiers in combination with a Quad 99 stereo power amplifier. When bi-
amping, remember to have the channel switch set to the correct channel.

7

Summary of Contents for 99 Stereo Power Amplifier

Page 1: ...TES 2 INTRODUCTION 3 PACKING LIST AND UNPACKING THE EQUIPMENT 3 GUARANTEE AND PRODUCT REGISTRATION 3 SERVICE ARRANGEMENTS 4 ACCESSORIES 4 CARE CLEANING 4 SAFETY AND OPERATION OF ELECTRICAL PRODUCTS 4...

Page 2: ...interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following mea...

Page 3: ...components are recoverable and may be taken to an appropriate recovery service Please retain the user manual and the information concerning the date and place of purchase of this equipment for future...

Page 4: ...ith 4mm plugs nor the 4mm plugs themselves CARE AND CLEANING The surface of the equipment may be cleaned with a damp cloth provided that the power has been removed first Solvent based cleaning materia...

Page 5: ...ea for example 220VAC T3 15AL slow blow 5x20mm USA for example 117VAC T6 3AL slow blow 5x20mm You should switch off the equipment and remove the connection to the mains power outlet before changing th...

Page 6: ...not in use Signal Input Connections When the 99 amplifier is used as part of a 99 system you should use the 99 AMPBUS lead provided to connect to the output of the 99 preamplifier or the 99AV processo...

Page 7: ...rs will be used as the left and right channels respectively of a stereo installation as part of a Quad 99 system Place one amplifier on top of the other Each amplifier has two AMPBUS sockets on the re...

Page 8: ...t with a fixed output Connecting Loudspeakers Loudspeaker cables should be carefully prepared The following sketches show the preparation of a speaker cable for use with Quad power amplifiers and loud...

Page 9: ...eries equipment stack the amplifier will be perfectly satisfactory provided there is sufficient ventilation If you are likely to use the amplifier for extended periods at extremely high volume levels...

Page 10: ...light still flashes there is an internal fault and you should return the unit to your dealer for his attention When used with other units When the amplifier is switched on the front panel indicator wi...

Page 11: ...MPBUS connections have been poorly made The cable between the amplifier RCA phono input and the preamplifier is faulty non Quad 99 systems You have selected the wrong input channel on the power amplif...

Page 12: ...way between the two loudspeakers If this is indefinite then the connections to one of the loudspeakers should be reversed When correctly connected the loudspeakers will give a definite centre sound so...

Page 13: ...less than 0 05 Stability Margin Unconditionally stable Amplifier DC Offset less than 10mV Dimensions HxWxD 70x321x310mm Weight 6 25Kg SPECIFICATIONS 99 MONO POWER AMPLIFIER Input Specifications RCA Ph...

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