Arcam P1000 audio amplifier
Contents
1. bi wiring P1000 bi wiring illustration just one channel shown for clarity P1000 E 7 P1000 E 8 Bi amping Bi amping requires the use of a second amplifier one amplifier is used to drive the treble speakers the other is used for the lower bass frequencies For the cables bi amping is much like bi wiring Connect the speaker terminals A from one module channel to one pair of terminals on your speaker Connect another module or one channel of a separate power amp to the other pair of terminals on the speaker so that two amplifier channels are connected to that speaker one for low frequencies and one for high frequencies The treble higher terminals of your speaker should be connected to the speaker terminals of the amplifier module channel being used for the high frequencies while the bass lower terminals of your speaker should be connected to the speaker terminals of the amplifier or module channel being used for the lower frequencies The strip of metal on the speakers connecting the lower terminals to the upper terminals must be removed Failure to do so will result in damage to both amplifiers Arcam P1000 O 09000 IN OUT IN OUT IN OUT IN OUT P1000 bi amping two amplifier modules for a single channel Notes on making speaker connections E Do not make any connections to your amplifier while it is switched on or connected to the mains supply M Always ensure that the volume control on2. terminals are provided for the two cables the speaker will have two pairs of terminals before attempting to on the back one pair labelled HF or High Frequency the other pair labelled LF or Low connect speakers Frequency Bi wiring improves the sound of your system because the separation of high Failure to do this may and low frequency signal currents into separate speaker cables avoids distortions caused result in both speaker by the different currents interacting with one another within a single cable as occurs in and amplifier damage conventionally wired systems Note that some speakers have three pairs of terminals on the back extending the bi wiring principle to tri wiring E Bi amping The performance of your system can be enhanced further by extending the signal separation principle to include separate amplification for the low and high frequency drivers in each speaker You will require two amplifiers to do this Single wiring The speaker terminals for any given channel are labelled clearly on the rear of the P1000 For each channel connect the positive terminal of A the speaker connection on the P1000 for that channel coloured red and labelled with to the positive terminal of your speaker for the channel connect for example the positive terminal of the centre channel of the P1000 to the positive channel of your centre speaker Similarly connect the negative terminal of the amplifier coloured black and labelled w
3. See the handbook of your source for details M Ensure that the disc you are playing is a multi channel recording and that the processor is putting multi channel audio out M Check that your speaker balance is correct see your pre amp processor handbook for details M Are all the channel indicator LEDs on the front panel green Refer to the table on page 10 if you see other colours Hum on an amplifier output If you have a hum coming from one of the speakers please check the following items M Does the hum originate from a ground loop caused by an aerial satellite dish or cable supply if the aerial is disconnected does the humming stop Please contact your dealer or aerial contractor for further advice M Ensure that the interconnect and speaker leads are not wrapped around a mains lead MB Try switching the ground lift on the pre amp processor if available see the handbook of your pre amp for details See also Sound is poor or distorted above There is radio television reception interference If you find that radio or television interference is present when the P1000 is switched on but disappears when it is switched off ensure that the aerial dish cable to your TV or receiver is routed away from your P1000 and its cabling and that the cabling used from the aerial dish is of a high quality screened Repositioning the receiving aerial dish may bring an improvement E If you are unable to rectify the fault af
4. made as described earlier in this handbook Check also the connections between the P1000 and the speakers Sound is poor or distorted If the sound coming from your P1000 is distorted or is weak in some way lacking in bass please check the following items M Ensure that all cables both interconnects and speaker cable are making a good connection Turn the P1000 off withdraw each cable from the connector and plug it back in again Switch the P1000 back on to see if the sound quality has improved M Check that you have selected the correct size of speakers to suit your system in the setup menu of the processor or pre amp Setting speakers to Small for example may be the cause of weak bass See the handbook of your pre amp processor for details Sound comes only from some of the speakers If sound is coming from some speakers only but those speakers are operating normally please check the following items M Are all speakers in the system connected to the P1000 M Have you configured your pre amp to include all the speakers in your system See the handbook of your pre amp processor for details M Do you have an appropriate surround sound source selected and playing through the pre amp M For sources connected digitally to the pre amp check that the source is putting multi channel data out Some DVD players for example allow selection of the output format and also whether multi channel data is down mixed to PCM stereo
5. the combination 8 Cleaning Unplug the unit from the mains supply before cleaning The case should normally only require a wipe with a soft damp lint free cloth Do not use paint thinners or other chemical solvents for cleaning We do not advise the use of furniture cleaning sprays or polishes as they can cause indelible white marks if the unit is subsequently wiped with a damp cloth 9 Power sources Only connect the appliance to a power supply of the type described in the operating instructions or as marked on the appliance The primary method of isolating this product from the mains supply is by disconnecting the mains plug from the supply This unit must be installed in a manner that leaves the mains plug accessible This is a Class 1 device and must be connected to a mains socket outlet with a protective earthing connection 10 Power cord protection Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them paying particular attention to cords and plugs and the point where they exit from the appliance 11 Grounding This is a class 1 product and requires an earth connection Ensure that the grounding means of the appliance is not defeated 12 Power lines Locate any outdoor antenna aerial away from power lines 13 Non use periods If the unit has a stand by function a small amount of current will continue to flow into the equipment in th
6. when you think that it should be switched on MB Is the power cord plugged into the P1000 Is the mains socket that it is plugged into switched on B Has the plug fuse failed or a circuit breaker earlier in the power supply path opened MB Has the fuse in the rear panel above the power inlet failed Note that the fuse must be replaced with the same type if you require assitance with this please contact your dealer MB Is the power switch on the rear panel of the P1000 in the on position Red amber light on the front panel The table on page 10 gives details of the fault conditions indicated by different LED patterns together with suggestions on correcting the fault No sound is produced Please check the following items if no audio can be heard through your P1000 MB Are all the channel indicator LEDs on the front panel green Refer to the table on page 10 if you see other colours or above if nothing is illuminated M Has the correct input been selected on the pre amp and is the selected source generating audio the disk is playing for example If possible try plugging headphones into the pre amp to ensure that the audio is present at that point if you cannot hear any audio through the headphones then it is likely that the fault is between the audio source and your pre amp MB Is the volume on the pre amp turned up to a reasonable level Is the pre amp muted M Are the connections between your pre amp and the P1000
7. HANDBOOK MANUEL HANDBUCH HANDLEIDING MANUAL P1000 Arcam P1000 multi channel power amplifier GEE Amplificateur de puissance P1000 Arcam Fran ais Mehrkanal Verstarker Arcam P1000 Deutsch Arcam P1000 eindversterker Amplificador multi canal Arcam P1000 ARCAM Safety guidelines CAUTION ATTENTION SHOCK DO NOT OPEN NE PAS OUVRIR CAUTION To reduce the risk of electric shock do not remove cover or back No user serviceable parts inside Refer servicing to qualified service personnel WARNING To reduce the risk of fire or electric shock do not expose this apparatus to rain or moisture The lightning flash with an arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance servicing instructions in the literature accompanying the product CAUTION In Canada and the USA to prevent electric shock match the wide blade of the plug to the wide slot in the socket and insert the plug fully into the socket Important safety instructions This product is designed and manufactured to meet strict quality and safety standards However you should be awa
8. el One or two channels driven at 1kHz 4Q 305W per channel One or two channels driven at 1kHz 3 2Q 325W per channel Peak output current capability 20 5A per channel Total harmonic distortion At any level up to rated power into 4 or 8Q lt 0 08 maximum 20Hz 20kHz typically lt 0 007 at 1kHz Frequency response 0 2dB 2HzZ 50kHz 1dB at 1Hz and 100kHz Residual hum and noise Ref full power 110dB A weighted or 100dB CCIR Voltage gain User selectable A x31 5dB B x29dB C x26dB Input impedance 22kQ in parallel with 180pF Output impedance 20mQ at 20Hz 1kHz 80mQ at 20kHz Power requirements 115V or 230VAC 50 60Hz 2 2kW maximum via IEC mains inlet A zero crossing AC system eliminates large transformer in rush currents at switch on Physical Dimensions W430 x D400 x Hi33 mm Mass 18kg 40 Ib net 21kg 46 Ib packed E amp OE Continual improvement policy Arcam has a policy of continual improvement for its products This means that designs and specifications are subject to change without notice All specification values are typical unless otherwise stated Radio interference The P1000 is an audio device which has been designed to very high standards of electromagnetic compatibility The unit can radiate RF radio frequency energy In some cases this can cause interference with FM and AM radio reception If this is the case keep the P1000 and its connecting cables as far fro
9. fier P1000 E 6 Two different connection types are provided for receiving signals from your pre amplifier The connection type to use depends on the set up that you have 1 If the cables to be used to connect your pre amp to the P1000 are less than 3m long we recommend connecting your pre amp to the phono sockets of your P1000 2 If the cables to be used to connect your pre amp to the P1000 are 3m or longer and your pre amp has balanced outputs we recommend using these instead of the phono connections Performance will also be improved in electrically noisy environments by using these connections While it is acceptable to mix balanced and phono connections between your pre amp and P1000 should you wish do not connect both balanced and phono inputs to any single channel General connection advice The outputs from your pre amp should be connected to the AUDIO IN inputs on the P1000 It is helpful to connect the pre amp output for a given channel to the input for that particular channel on the P1000 For example connect the left surround output from your pre amp to the left surround channel input of the P1000 There is no technical improvement in following this strategy but it makes life easier If you wish to use two modules to bi amplify a pair of speakers or would like to bi amplify using another power amp then you can take the signal for that channel using the AUDIO OUT phono socket for that channel and feed it on to t
10. he additional module s The signal is then fed in to the first module but also fed on to the second module so that both modules can bi amplify the loudspeaker See Bi amping on page 8 for more information Note that bi amping in this way requires the use of phono connections between your pre amp and the P1000 12V Trigger input If your pre amp provides a 12V Trigger output it can be connected to the 12V TRIGGER IN Q socket using a 3 5mm jack This enables the P1000 to be turned on remotely from the pre amp The 12V trigger uses a 3 5mm mono jack Note that the trigger input is active only when the power button on the rear panel is in the on plug wired as follows position E Sleeve Ground E Tip Active Connecting to loudspeakers Wiring strategies There are three different wiring strategies that can be employed to connect your P1000 to your speakers Your choice will be limited by what your speakers can support E Single wiring Single wiring is the conventional wiring system of running a single cable per channel Before you start between the amplifier and the speaker E Bi wiring Ensure that your Bi wiring is running two separate cables between the amplifier and each speaker with P1000 is switched one cable carrying the low frequency information the other the higher frequency signals off and disconnected Any amplifier can support bi wiring but speakers support it only if separate connection from the mains supply
11. her amplifiers that have a THX gain value such as the Arcam P7 Note that the P1000 is not a THX rated product MB C This gives the P1000 a gain of 26dB Use this setting if the P1000 is to be used with other amplifiers that have this gain Although the gain for each channel can be set independently it is very unusual that different channels would be set to have different gains We recommend strongly that you set all amplifier channels to the same gain setting Connecting to a power supply Mains lead The P1000 is normally supplied with a moulded mains plug already fitted to the lead If for any reason the plug needs to be removed it must be disposed of immediately and securely as it is a potential shock hazard when inserted into the mains socket Check that the plug supplied with the unit fits your supply and that your mains supply voltage agrees with the voltage setting 115V or 230V indicated on the rear panel of the unit Should you require a new mains lead or the voltage accepted by the unit does not match your supply please contact your Arcam dealer Plugging in Push the IEC plug of the power cable supplied with the unit into the POWER INLET socket in the back of the unit Make sure it is pushed in firmly Put the plug on the other end of the cable into your power supply socket and switch the socket on Troubleshooting No lights are illuminated Please check the following items if no lights are illuminated on the P1000
12. herefore advised to insure the unit against loss or damage whilst in transit For further details contact Arcam at Arcam Customer Support Department Pembroke Avenue Waterbeach CAMBRIDGE CB5 9QR England Problems If you have a problem always contact your dealer in the first instance If your dealer is unable to answer any query regarding this or any other Arcam product please contact Arcam Customer Support and we will do our best to help you On line registration You can register your Arcam product on line at www arcam co uk
13. hing off To shut down switch the P1000 off first followed by the pre amp or controller Channel status indicator lights Each channel of amplification on the P1000 has a unique status indicator light On power up the lights change from amber to green which indicates the change in status from initialising to active All lights are switched off in stand by mode If the status lights do not follow this sequence when the P1000 is powered up or behave abnormally at any time during use refer to the table on page 10 to determine the problem P1000 E 5 Installation N es es 6 10 CYR 62 0 000 5 62 0 Positioning the unit M Place the amplifier on a level firm surface Avoid placing the unit in direct sunlight or near sources of heat or damp Do not place the unit on top of another power amplifier or other sources of heat Ensure adequate ventilation If the unit is placed in an enclosed space such as a bookcase equipment rack or cabinet make sure that there is adequate space and ventilation in the enclosure for air to flow through the ventilation slots and cool the amplifier Inadequate cabinet ventilation may cause the P1000 to shut down due to thermal overload The amplifier will run warm even during normal operation M Ensure that the equipment rack or stand can support the weight of the P1000 Connecting to a pre ampli
14. is mode Unplug the power cord of the appliance from the outlet if left unused for a long period of time 14 Abnormal smell If an abnormal smell or smoke is detected from the appliance turn the power off immediately and unplug the unit from the wall outlet Contact your dealer immediately 15 Servicing You should not attempt to service the appliance beyond that described in this handbook All other servicing should be referred to qualified service personnel 16 Damage requiring service The appliance should be serviced by qualified service personnel when A the power supply cord or the plug has been damaged or B objects have fallen or liquid has spilled into the appliance or C the appliance has been exposed to rain or D the appliance does not appear to operate normally or exhibits a marked change in performance or E the appliance has been dropped or the enclosure damaged Safety compliance This product has been designed to meet the IEC 60065 international electrical safety standard Using this handbook This handbook has been designed to give you all the information you need to install connect set up and use the Arcam DiVA P1000 multi channel power amplifier It may be that the P1000 has been installed and set up as part of your Hi Fi or home cinema installation by a qualified Arcam dealer In this case you may wish to skip the sections of this handbook dealing with installation and setting u
15. ith to the negative terminal of your speaker If your speaker supports bi wiring i e it has more than one set of connecting terminals but you do not wish to use bi wiring connect the P1000 to the terminals labelled LF or Low Frequency There should be a strip of metal on the speakers connecting the low frequency terminals to those for the higher frequencies this must not be removed in a single wired system Arcam P1000 ooo oo IN OUT IN OUT IN OUT IN OUT OHO OHO O O O O O O P1000 single wiring illustration just one Follow the above instructions for each speaker in your system ensurin i y M 2 channel shown for clarity that the speakers are connected to the correct output of the P1000 You do not have to connect speakers to all the channels of the P1000 e g if you don t have a centre speaker it doesn t matter Bi wiring Bi wiring is performed in the same way as single wiring except that for each speaker a pair of cables is used to connect the positive terminal of A Arcam P1000 fe 00000 0 IN OUT IN OUT IN OUT IN OUT the amplifier to the speaker One of the cables must be connected to the lower of the two positive terminals on Alto with the other cable connected to the higher positive terminal The negative terminals must be connected in a similar manner The connecting strip of metal on the speakers connecting the lower terminals to the upper terminals must be removed for
16. m the tuner and its aerials as possible Connecting the P1000 and the tuner to different mains sockets can also help to reduce interference EC Countries These products have been designed to comply with directive 89 336 EEC USA These products comply with FCC requirements P1000 E 11 Guarantee P1000 E 12 Worldwide Guarantee This entitles you to have the unit repaired free of charge during the first two years after purchase at any authorised Arcam distributor provided that it was originally purchased from an authorised Arcam dealer or distributor Arcam can take no responsibility for defects arising from accident misuse abuse wear and tear neglect or through unauthorised adjustment and or repair neither can Arcam accept responsibility for damage or loss occurring during transit to or from the person claiming under the guarantee The warranty covers parts and labour costs for two years from the purchase date After two years you must pay for both parts and labour costs The warranty does not cover transportation costs at any time Claims under guarantee This equipment should be packed in the original packing and returned to the dealer from whom it was purchased or failing this directly to the Arcam distributor in the country of residence It should be sent carriage prepaid by a reputable carrier not by post No responsibility can be accepted for the unit whilst in transit to the dealer or distributor and customers are t
17. mplifier is built to Arcam s traditional high quality design and manufacturing standards It is an extremely high performance amplifier offering up to 135W per channel While obviously well suited to multi channel home cinema amplification additionally it provides superb stereo performance with two channel sources The P1000 is an ideal partner for the Arcam DiVA AVP700 Pre amp Processor Each of the amplifier modules within the P1000 is identical so each channel of amplification has the same performance The P1000 has input and output phono sockets for the signal being fed to each channel which allows the signal to be passed on to additional power amplifiers if required to drive loudspeakers in other rooms or to bi amplify any channels If the P1000 is being used to drive a five channel surround sound system for example then the spare two modules L surround rear and R surround rear could be used in conjunction with the main L front and R front modules to bi amplify suitable front left and right speakers We anticipate that the P1000 will give you many years of home cinematic enjoyment Speaker Installation The P1000 allows connection of up to seven loudspeakers All speakers with the exception of the subwoofer should be arranged around your normal viewing listening position see diagram The subwoofer can be placed almost anywhere and we recommend experimenting with it in various positions to obtain the best
18. p the unit Use the contents list to guide you to the relevant sections Safety Safety guidelines are set out on the opposite page Many of these items are common sense precautions but for your own safety and to ensure that you do not damage the unit we recommend that you read them This is a class 1 product and must be earthed The small print E Lucasfilm and THX are trademarks or registered trademarks of Lucasfilm Ltd Copyright Lucasfilm Ltd amp TM Contents Safety guidelines rece Eee eee ee en ane ee eee E 2 EEPE nTn leoonn ea rea a a st scrceseas setts E 3 Getting started with your P000 a E 4 ilfmel aXe Wield el plkeeaancnarencneenchortieca E E 4 Speaker Installations eane e E EER E 4 Er E AE E A e E E 4 Operatingiyour POOO A e seen esis E 5 POW PR cixaicstastan EEA RE EAE EPA EES E 5 Channel status indicator lights ES Positioning the Unit MEG Connectingitora pre amplifen E 6 In Ste lation ne ee eee 6 Connecting to loudspeakers ve Setting the amplifier gain 8 Connecting to a power supply 8 Troubleshooting eee e e ee eee cena eee eee E 9 Fault Status INAICALO TS EE chnicaliSpecinea tion eee Cane re Continual improvement policy Rea cionimtentenen Cerne 2 E ee ee G arantee ete nn E ne ee Worldwide Guarantee He Onjlinesnegisthationteeeesc s csccesee re ee P1000 E 3 Getting started with your P1000 Introduction The P1000 multi channel power a
19. r system Only use cables that are designed for the particular application as other cables will have different impedance characteristics that will degrade the performance of your system do not use audio cables to carry video for example Speaker cable length should be a short as practically possible but pairs of cables the cables to the front left and front right speakers for example should be of similar lengths We advise routing the interconnect cables speaker cables and mains power cables away from each other to minimise interference If you require help chosing suitable cables please contact your dealer or installer P1000 E 4 Operating your P1000 ARCAM P1000 MULTICHANNEL POWER AMPLIFIER POWER Power The P1000 front panel has a single control a power on off button located on the right The power button switches the P1000 in to and out of stand by To switch the unit off completely use the switch on the rear panel Conversely if the P1000 fails to power on when the button on the front panel is pressed ensure that the switch on the rear panel is in the on position When the unit is mains powered but in standby mode the LED next to the power button is red In normal use the LED is green Switching on It is recommended that you switch on your pre amplifier or controller before powering up the P1000 as this will reduce the chance of any thumps being fed through to the power amp Switc
20. re of the following installation and operation precautions 1 Take heed of warnings and instructions You should read all the safety and operating instructions before operating this appliance Retain this handbook for future reference and adhere to all warnings in the handbook or on the appliance 2 Water and moisture The presence of electricity near water can be dangerous Do not use the appliance near water for example next to a bathtub washbowl kitchen sink in a wet basement or near a swimming pool etc 3 Object or liquid entry Take care that objects do not fall and liquids are not spilled into the enclosure through any openings Liquid filled objects such as vases should not be placed on the equipment 4 Ventilation Do not place the equipment on a bed sofa rug or similar soft surface or in an enclosed bookcase or cabinet since ventilation may be impeded We recommend a minimum distance of 50mm 2 inches around the sides and top of the appliance to provide adequate ventilation 5 Heat Locate the appliance away from naked flames or heat producing equipment such as radiators stoves or other appliances including other amplifiers that produce heat 6 Climate The appliance has been designed for use in moderate climates 7 Racks and stands Only use a rack or stand that is recommended for use with audio equipment If the equipment is on a portable rack it should be moved with great care to avoid overturning
21. result Position your front left and right speakers to achieve a good stereo image for normal musical reproduction If Fe Centre Front i eft right they are placed too close together there will be a lack ss of spaciousness Alternatively if they are placed too far apart the stereo image will appear to have a large hole Es in the middle and will be presented in two halves Subwoofer The centre speaker allows for a more realistic reproduction of dialogue and centre sounds as well as wider and better imaging for stereo effects and background sounds for home cinema use Do not compromise on the quality of your centre speaker as it carries all the dialogue for a home cinema system Surround ji Surround The surround left and right speakers reproduce the back left i back right ambient sound and effects present in a multi channel home cinema system Surround Surround left right The surround back left and surround back right speakers are used to add extra depth a more spacious ambience and sound localisation A subwoofer will improve the bass performance from your system It is useful for reproducing special cinema effects especially where a dedicated LFE Low Frequency Effects channel is available as with Dolby Digital or DTS Digital Surround encoded discs Cables We recommend the use of high quality screened analogue digital and video cables as inferior quality cables will degrade the sound and picture quality of you
22. st be fed to the channel for the short circuit to be detected For example muting the output using your pre amp will make the fault appear to clear it is likely that the fault condition will re occur when the pre amp is unmuted however unless further action is taken One or more channel lights An over temperature fault has The amplifer mutes the channel with are amber occured on a channel with the the fault The amplifier stays in this amber light state until the channel has cooled If this fault occurs frequently ensure that the amplifier has adequate ventilation DC offset faults A DC offset fault is not an amplifier fault but a speaker protection mechanism If the amplifier is supplied with a DC voltage rather than the expected AC voltage for an extended length of time the coils in the attached speakers will eventually burn out or in extreme cases catch fire The P1000 can detect this condition and cut the current to the speakers DC offset faults can occur intermittently in all set ups particularly if a tuner or satellite receiver is connected If it occurs frequently or predictably please contact your dealer for advice Technical specification All measurements are with 230V 50Hz mains power Continuous output power All channels driven 20Hz 20kHz 8Q 135W per channel 945W total All channels driven 20Hz 20kHz 4Q 210W per channel 1 47kW total One or two channels driven at 1kHz 8Q 190W per chann
23. ter checking the items suggested above please contact your dealer for advice P1000 E 9 P1000 E 10 Fault status indicators The light patterns described below indicate the following fault conditions Light pattern Description Amplifier action All lights are green This is the normal operating state None of the amplifier The power light is amber A DC offset fault has occured A The condition does not clear and the channel lights DC offset fault can occur if an automatically are off excessive DC voltage is present Simply to clear the fault turn the at the output of the pre amp P1000 off for at least 30 seconds feeding the P1000 Please see the using the switch on the rear of the note below unit then turn it on again If the fault fails to clear using this method or to verify excessive DC offset voltage turn the P1000 off using the switch on the rear of the unit remove the interconnect leads with the P1000 switched off then turn the P1000 on again The fault should have cleared if the power light is still amber then your P1000 has developed a fault Switch the unit off and contact your dealer One or more channel lights A short circuit fault has occured The amplifier mutes the channel are flashing amber green The flashing light s represent with the short circuit If the fault is the amplifier channels with the cleared the amplifier will resume short circuit normal operation Note that audio mu
24. your pre amplifier is set to minimum before starting to make connections MB Before switching your P1000 on for the first time after connecting to speakers please check all connections thoroughly Ensure that bare wires or cables are not touching the amplifier in the wrong places which could cause short circuits and that you have connected positive to positive and negative to negative M After making connections turn the volume down to minimum on your pre amplifier before switching the P1000 on Switch the amplifier s on select a source signal then gradually increase the volume to the required listening level MB If you are unsure as to how your system should be connected or need advice on bi wiring or bi amping please contact your Arcam dealer Your dealer will be happy to help you Setting the amplifier gain You may have noticed a small switch next to the speaker terminals for each channel on the rear of the product This switch allows the gain of the amplifier to be set move the sliders to the A B or C position depending on the gain value that you require E A This position means that the P1000 has a gain of 31 5dB which is the usual gain for Arcam amplifiers Use this setting if the P1000 is to be used either on its own or in conjunction with other amplifiers from Arcam E B This gives the P1000 a gain of 29dB which is the gain used by THX compatible amplifiers Use this setting the P1000 is to be used with ot
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