Quad 33 manual - n-1

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The <strong>Quad</strong> 303 carries no controls and may bemounted out of sight inside the cabinet or at any otherconvenient position in the installation.The <strong>Quad</strong> 303 may be either stood on its feet on ashelf or base board of a cabinet, or more securely fixedby drilling four holes in the shelf or board to coincidewith the feet centres, removing the feet securing screwsand passing the longer screws provided, up through theseholes, through the feet which act as spac€rs to assistcirculation of air under the amplifier, and into thetapped bushes in the base-plate.Slots or holes should be cut in or near the base andin or near the top of any enclosed compartment topermit a flow of air upwards through the compartment,past and through the amplifier to assist ventilation. Inconfined spaces where the exit vents are not directlyover the amplifier a deflector plate of plywood orasbestos may be mounted at an inclined angle above theamplifier to help guide the rising warm air towards theexit vent and prevent an accumulation of warm airunder a closed horizontal top.Page Five
CONNECTIONSDin styls plugs showing method of assembly. See individual illustrationsfor Din connections.Control Unit to Power AmplifierTwo leads are supplied with the control unit. Thatwith a 4-pin connector at each end is reversible andconnects the control unit output to the power amplifierinput. The other connects the switched mains supplyfrom the control unit to the power amplifier and the2-pin plug at the control unit end of this lead isreversible. (See Fig. l0). Longer leads are permissiblewhere required for special installations (see Specificationon page 2l).Power Amplifier to LoudspeakersOrdinary lighting flex or similar cable may be usedfor connecting the loudspeakers to the power amplifierunless a very long run is involved in which case a heaviercalibre cable should be used. As a rough guide the DCresistance of the cable should not exceed about 5,% ofthe nominal impedance of the loudspeaker. Each loudspeakershould be connected to its appropriate lloweramplifier output so that the two pairs of wires are connectedin the same way, to ensure that the speakersoperate in phase. For example, if the top output socketon one channel is connected to the left-hand terminalof its speaker, the top output socket on the otherchannel should also be connected to the left-handterminal of its speaker. This is quite straighfforwardbut should there be any doubt the phasing can bechecked later experimentally. (See Page l5). Whereone loudspeaker only is used for mono, phase is notimportant and in this case either outlet may be usedand the sockets of the other channel left vacant.In cases where loudspeakers, such as the electrostaticloudspeaker, also require an eneryising supply, the\Pape Six
Page 2 and 3: ContentsIntroductionInstallationMou
Page 4 and 5: INSTALLATIONNormally equipment of t
Page 9 and 10: input and an AM tuner for long dist
Page 11 and 12: The plug-in Tape Adaptor Board prov
Page 13 and 14: Volume control andon/off switchQUAD
Page 15 and 16: duction that voice will take up a p
Page 17 and 18: As the Filterslope controlis rotate
Page 19 and 20: y experiment. Few people can succes
Page 21 and 22: SPECIFICATION FOR QUAD 33 CONTROL U
Page 23 and 24: SPECIFICATION FOR QUAD 303 POWER AM
Page 25: 6uaranteeThis instrument is guarant

Quad 33 manual - n-1

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