CPA5000 Reference Preamplifier Manual
Contents
1. Cycle of input selection options for Bus A 12 To select Bus B press and hold the B button on the front panel The currently selected line input will be displayed with dots underneath to indicate Bus B The selected input will automatically be sent to the tape recording T2 phono outputs Press and release the B button to cycle through the inputs Cycle of input selection options for Bus B 13 Select the output Press the SET button to select the output ch 4 MIL ITE adjusting the volume Use the volume knob to adjust the volume manually A clockwise turn of the knob will increase the volume and an anti clockwise turn of the knob will decrease the volume The volume range runs from 0 to 98 and is displayed on the CPA5000 display as you change the volume If the outputs are muted a volume change will un mute the outputs to prevent large changes in volume from damaging your loudspeakers The volume level is shown on the display as the word VOL and a two digit level as shown in the example diagram below Volume display changing the balance Use the balance knob to shift the balance between the left and right loudspeaker A clockwise turn of the knob will shift the balance to the right speaker and an anti clockwise turn of the knob will shift the balance to the left speaker Switching the VU meter Press the front panel button marked VU to switch the VU display on and off 14 Using the remote control The2. CPA5000 Reference Preamplifier CONTENTS PRODUCT DESCRIPTION INVENTORY WHEN SETTING UP SAFETY WARNINGS AC POWER CONNECTION AC CONNECTOR CONNECTING YOUR EQUIPMENT INPUT CONNECTIONS OUTPUT CONNECTIONS RECORDING AV BYPASS HEADPHONES EVERYDAY USE OF YOUR CPA5000 USING THE REMOTE CONTROL MAINTENANCE FREQUENTLY ASKED QUESTIONS TRIGGER OUTPUTS PRODUCT SPECIFICATION 10 11 11 12 15 18 18 19 20 CPA5000 Reference Preamplifier Thank you for buying a Chord Electronics product Before you start to enjoy your preamplifier please take a couple of minutes to read how to connect your audio equipment and how to maximise your listening experience Product Description The CPA5000 Reference Preamplifier uses our latest Ultra High Frequency power supply and ultra low noise circuitry giving an amazing noise floor performance below 130dB It also utilises solid milled aluminium shielding to prevent RF interference Extra flexibility is now offered with four pairs of fully balanced XLR style inputs and an additional four pairs of RCA style unbalanced inputs with two completely independent tape recording loops Selection can be made manually via the front panel or using the supplied remote control Each input has six levels of gain that can be individually selected to prevent large changes in volume when switching between inputs All settings are stored via the microprocessor even if power is removed I
3. Example increasing gain on Bus A Decreasing the input gain 1 Select the Line and Bus with the source that requires the gain to be reduced e g Line2 Bus A 2 On the remote control press BUS A or BUS B if you are using this bus The display will show the currently selected gain for this input 3 Press the Vol key on the remote control to decrease the gain 4 Repeat steps 2 and 3 to continuedecreasing the gain Press Bus A gt then Vol Press Bus A then Vol gt Example decreasing gain on Bus A 17 Maintenance adjusting the settings Always remember to make any changes to settings with the volume set low or an instant burst of sound could damage your loudspeaker cleaning To clean finger marks and other blemishes from your amplifier spray clear glass cleaner onto a soft lint free cloth and then use the cloth to gently clean your amplifier changing the batteries in the remote control Simply push the button on the bottom of your remote control to release the battery cover Replace with four new AAA batteries as shown inside the battery compartment servicing There are no user serviceable parts in your Chord amplifier and it should only be serviced by Chord Electronics Limited or their expressly approved Service Agents Frequently asked questions why aren t any of the remote control buttons working Press the HIFI button to set up the remote control for pre amplifier functions I ve conne
4. CPA5000 is supplied with the system remote control that is a universal controller for all Chord products televisions and DVD players Full instructions can be found in the System Remote Manual supplied but for the purposes of controlling the CPA5000 the main functions are listed on the next few pages Cod Ebooks limiled Press the HIFI key to begin controlling the CPA5000 15 Selecting the input source Press the Line or Line keys on the centre control to cycle through the inputs For convenience you can directly access the first 5 inputs using the buttons at the bottom of the remote control DISC1 RAD DISC2 TAPE2 VID BUSA The main everyday Bus A inputs are on the left whilst the Bus B inputs are on the right Press the button marked BUS A to select Bus A so you can listen to the source connected to this bus Press the button marked BUS B to select Bus B so you can listen to the source connected to Bus B Bus B inputs are shown with dots underneath As an example you can listen to your CD player on Linel Bus A whilst recording the radio on Line2 Bus B Press BUS B then Line2 Start recording The press BUS A then Linel to listen to the CD player Adjusting the volume Press the Vol button on the centre control to increase the volume press the Vol button on the centre control to decrease the volume Adjusting the balance Press the Bal button to move the balance towards the right Pre
5. metalwork of each item is connected together 2 We recommend that an earthing method for your building be implemented 3 Use the connecting points on your Chord unit and connect to an available earth point Safety Warnings It is important that your CPA5000 is earthed at all times via its own mains lead Failure to do this may be hazardous The power supply components within the CPA5000 are designed to operate at lethal voltages and energy levels Circuit designs that embody these components conform to applicable safety requirements Precautions must be taken to prevent accidental contact with power line potentials Do not connect grounded test equipment There are no user serviceable parts within the CPA5000 Reference Preamplifier Unauthorised tampering or dismantling of this product will invalidate the warranty and could cause injury AC Power connection The AC power connector of CPA5000 is at the back of the unit Plug the female end socket of the power cord into the power connector of the preamplifier and the male end plug of the power cord into AC wall socket or AC extension socket The CPA5000 features a universal voltage high frequency power supply and will operate automatically from 65V to 260V AC 50 or 60Hz For optimum operation it is recommended that the CPA5000 is connected directly to the wall socket via the power cord provided EARTH T N AC Connector m IEC 10A AC Connector Powering up Press the front pa
6. another input whilst recording simply by selecting the other bus Note In these examples we have used a tape recorder but you can use any recording device with a phono input Minidisc CD DVD recorders and PC soundcards are all normally compatible If you wish to record from one tape recorder to another then you will need to swap the tape recorder outputs Connect the first tape recorder to T1 IN and T2 OUT then the second to T2 IN and T1 OUT Play the tape on BUS A Tape 1 then record on the other tape recorder 10 AV Bypass AV Bypass mode allows the output of an AV surround sound processor to be connected and then routed directly to the output of the CPA5000 The volume control and signal processing are bypassed so that the signal from the AV processor reaches the power amplifier exactly as if it were connected directly This has the advantage of allowing the CPA5000 to remain in an AV system to give the best possible stereo two channel playback whilst still being able to switch to AV bypass mode to allow the processor to playback multichannel film content AV O P 208 000 AN m o 9088600 Connect the front left and right outputs from your AV processor to the inputs on the back of the CPA5000 marked A V Connect to the power amplifier as normal via either the balanced or RCA output on the CPA5000 Press the SET button or Bypass on the remote control to activate the bypass option Note The volume control
7. cted all the wires up but I can t hear any sound Ensure that you ve selected the correct bus typically Bus A the correct input e g Line 1 and the correct output e g Output 1 why is there humming coming from the loudspeakers Check that you ve earthed the unit The interconnects need to be properly screened and placed away from mains cables Interference can be reduced by using balanced inputs and outputs instead of RCA phono types the sound coming from the loudspeakers is distorted Check that the speakers are connected properly It may be that the volume is turned up too loud for your speakers or that you have set the gain for the input device too high 18 Trigger Outputs The CPA5000 features three trigger outputs that can be used to remotely trigger other Chord equipment The external trigger should be connected via a standard 1 8 inch 3 5mm mono or stereo jack plug to the socket fitted to the rear of the unit The CPA5000 should be switched off the trigger lead inserted then the unit switched back on The connections are as follows _ II VA OV Ground 5V to 12V The tip of the plug is the 5V to 12V dc connection the centre and rear connection are the OV or ground connection 19 Product Specification Unbalanced Inputs Balanced Inputs Outputs AV Bypass input Intermodulation Distortion Signal to Noise Ratio Average Noise Floor Frequency Range Nominal Ga
8. in THD Channel Separation Channel Balance Input impedance Output impedance Output Offset Max Input Voltage Max Output Voltage Volume Performance VU Meter DC Ouput triggers Power Consumption Operating Voltage Dimensions Weight Line 5 Line 6 Tape 1 Tape 2 4 x pairs RCA Phono style gold plated with Teflon dielectric insulation Line 1 to Line 4 3 pin female pairs of female Neutrik XLR inputs 1 x pair of 3 pin male Neutrik XLR output with 1 x pair of gold plated RCA Phono wired asymmetrically in parallel 1 x pair female 3 pin Neutrik XLR input 120dB all inputs 120dB all inputs 130dB 2 5Hz 200kHz 3dB All inputs subject to 6 levels of switchable gain x0 5 x1 x1 5 x2 x2 5 x3 0 002 20Hz 20KHz 20 Hz 100dB 1kHz 95dB 10kHz 90dB 20kHz 85dB 0 01dB Unbalanced 50kOhms Balanced 100kOhms 100 Ohms short circuit protected OmVDC both channels 17Vrms balanced 8 5V rms unbalanced 17V rms balanced 8 5V rms unbalanced OdB 0 5dB 20dB 0 2dB 60dB 0 24dB 13 secs for full travel Accurate to 0 5dB 30 steps to VU Specification 12V active high x 3 50W 85 270V AC 50 60Hz auto switching 420mm w x 355mm d x 133mm h 18Kg Chord Electronics limited The Pumphouse Farleigh Bridge Farleigh Lane East Farleigh Kent ME16 9NB Tel 44 0 1622 721444 Fax 44 0 1622 721555 Email sales chordelectronics co uk http www chordelectronics co uk 20
9. in the CPA5000 will be bypassed so please check before switching on your AV processor that the volume is turned down When switching back please check that the volume on the CPA5000 has not inadvertently been turned up before playing any music Headphones The CPA5000 features two inch headphone sockets on the front panel to turn on headphone mode 1 Insert the headphone jack s 2 Press the SET button several times until H PHN is displayed Headphone mode automatically mutes your loudspeakers Headphone mode also prevents any volume control from automatically un muting your loudspeakers to turn off headphone mode 1 Press the SET button several times until your chosen output is displayed or 2 Press Mute on your remote control or 3 Press OUT1 on the remote control 11 Everyday use of your CPA5000 Turning on your CPAS000 Press the power button on the front of the CPA5000 Press again to switch off Select the input source Press and hold button A on the front panel to select Bus A Your CPA5000 should be set to Bus A for normal operation and the display will read the last selected input with no dots underneath The selected input will automatically be sent to the tape recording T1 phono outputs LIN To assign the main output with a particular input signal press button A and release several times to cycle through the 7 line inputs until the one you wish to use is displayed The options are shown in the diagram below
10. nel switch marked power until it latches The display and internal illumination will light up The display will show the selected input Powering down Press the front panel switch marked power and release The CPA5000 utilises soft start circuitry so the power can switched on and off as often as required There is no need to leave the CPA5000 permanently switched on PUSH Connecting your equipment Chord amplifiers are supplied with and designed to be connected using balanced inputs The interconnecting cables you use will depend on the available input and output sockets on your other equipment We have installed unbalanced inputs on all Chord equipment thus enabling you to mix Chord Electronics and other manufacturer s equipment Balanced inputs carry twice the strength of signal of unbalanced inputs and are able to be fed down long lengths of cable with less deterioration of signal They are also less prone to interference than unbalanced inputs Balanced inputs have three pins and use Neutric XLR style connectors Pin is earth pin 2 is positive and pin 3 is negative Unbalanced inputs use RCA phono connectors which are gold plated with teflon high performance dielectric insulators for optimum performance speakers power amplifier Amplfication Red Reference CD Player pre amplifier Switching and CD Player level control Data and outputs SYMPHONIC analogue DAC 64 phono stage conversion Signal CD T
11. nventory As well as your CPA5000 and this user manual you should also have received the following items 1 System Remote Control including user manual 2 Power cord 3 Chord guarantee registration card When setting up To ensure that your CPA5000 works efficiently and safely please pay particular attention to the following issues ventilation Your CPA5000 should have at least 5cm of clear space all around it to ensure a free flow of air at all times We do not recommend that you place CPA5000 directly on a carpet If you have the optional integra leg system fitted it is recommended that the power amplifiers sit above the CPA5000 AC lead and plug All Chord equipment comes supplied with the correct power lead and plug This should be used at all times if you need to fit a plug for UK Europe Connect the blue wire to the neutral terminal Connect the brown wire to the live terminal Connect the yellow green wire to the earth terminal if you need to fit a plug for US Canada Connect the white wire to the neutral terminal Connect the black wire to the live terminal Connect the green to the earth terminal earthing issues in Europe In some European countries a hum may occur if your CPA5000 is connected to mains sockets that do not have an earth If this is the case please ensure that 1 Your transport is connected via a multi way mains block which contains an earth point at each socket outlet This is to ensure that the chassis
12. ransport Source Basic system diagram Input Connections You can connect up to 8 items of source equipment Included in this are two tape loops for recording purposes All input connections are on the rear panel and are marked with the corresponding Line number Lines 1 to 4 are balanced inputs Line 5 6 T1 Tape 1 and T2 Tape 2 are RCA phono style inputs Left channel connections are at the top right channel connections are at the bottom OT TT OONAN c It does not matter which input you choose just select the same type of connection that your source has Note Moving coil turntables without an internal amplifier will require an external phono stage amplifier such as the Chord Symphonic before connecting to the CPA5000 Output Connections You need to connect the outputs on the back of the CPA5000 to a power amplifier in order to drive your loudspeakers There is one pair of balanced XLR outputs or one pair of RCA phono outputs each of which will drive a 68 ohm load Choose either depending on the appropriate input connection on your power amplifier Left channel connections are at the top right channel connections are at the bottom Note For optimum performance it is recommended that the balanced outputs are used where possible 60000 0006000 o ro a 5 m 10 Ww If you wish to bi amp then ask your interconnect manufacturer to provide you with a balanced or RCA cable split
13. ss the Bal button to move the balance to the left S ESC MENU Changing the output Press OP1 to select the main output Press BYPASS OP2 to select AV Bypass output OP1 2 has no function on the CPA5000 BYPASS Mute Press the mute key to mute the CPA5000 ure To un mute Press the mute key again or select an output or change the volume 16 Input Gain Control You can adjust the input gain on any of the Line inputs so that you can align the volume levels of your different sources There are six steps which are x0 50 x1 00 x1 5 x2 00 x2 5 and x3 00 Most modern input devices such as CD players have an unbalanced output voltage of 2 5V and a balanced output 5V which does not require any increased gain amplification In fact to increase the gain on such an output level can lead to distortion of the signal However older audio equipment may have an output voltage of less than 2V in which case you may like to adjust the input gain Note When using the Chord DAC64 please set the line gain to 0 5 Increasing the input gain 1 Select the Line and Bus with the source that requires increased gain e g Line2 Bus A 2 On the remote control press BUS A or BUS B if you are using this bus The display will show the currently selected gain for this input 3 Press the Vol key on the remote control to increase the gain 4 Repeat steps 2 and 3 to continue increasing the gain Press Bus A then Vol gt
14. ter This will split the single output from the CPA5000 into two signals one for each amplifier Recording You can record an input from another audio source or two sources at the same time If you ve been using a tape recorder as an input source it will already be connected to the T1 or T2 IN sockets If you haven t first connect the tape s output to the T1 or T2 IN sockets connecting to a Tape recorder to tape an audio source Use RCA connectors to the left and right pairs marked OUT T1 or T2 or both Tl T2 OUT T1 T2 000000 5 selecting the bus Your amplifier has two input selection buses The default bus is bus A and this is the one you would use to choose your inputs in everyday operation The advantage of having two buses is that it allows for two tape recorders to tape different inputs simultaneously Bus A is permanently connected to the Tape 1 T1 output and Bus B is permanently connected to Tape 2 T2 output You can tape from any source to either of the tape recorder outputs and both outputs can be monitored For example You can play a CD on Line 1 on Bus A and record this by connecting your tape recorder to the Tape 1 T1 output At the same time you can play a radio on Line 2 and connect another tape recorder to the Tape 2 T2 output to record the radio Simply switch between Bus A and Bus B to monitor either of the sources If you are recording an input on one Bus you can still listen to
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