CPA2500 manual - Chord Electronics
Contents
1. 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 2 T2 output and Bus B is permanently connected to Tape 1 T1 output which prevents you from accidentally taping to and from the same machine 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 Disc 1 on Bus A and connect your tape recorder to the Tape 2 output while you play a record on Disc 2 on Bus B and connect another tape recorder to the Tape 1 output Simply switch between Bus A and Bus B to monitor either of the sources Everyday use turning on CPA2500 When you plug your pre amplifier into the mains using the supplied mains lead the display will light and the unit is ready for use select your input source Your pre amplifier uses input Bus A by default and the display will read To scroll through the other input sources press button A Press button B to select Bus B It is indicated by a dot displaying between each letter e adjusting the volume Use the volume knob to adjust the volume manually changing the balance Use the balance knob to shift the balance between the left and right loudspeaker Using the remote control For optimu2. 2 Inputs on the CPA 2500 You can connect up to six items of source input equipment such as CD player Video Tuner etc to the inputs on your amplifier The inputs have left and right sockets and use RCA phono connectors connecting to a CD or record player unit Use RCA connectors to the LEFT and RIGHT pairs marked Disc 1 or Disc 2 Note All record players need to be connected to a separate phono head amplifier like the Chord Phono Stage before connecting to this product connecting to a Video DVD or other products Use RCA connectors to the left and right pairs marked V connecting to a Tuner Radio or Satellite receiver Use RCA connectors to the left and right pairs marked KR curte O Qo lt tee OO pa connecting to a Tape recorder Connect the outputs of your tape recorder to the RCA connectors marked IN T1 or T2 The tape recorder input should be connected to the inputs marked OUT T1 or T2 Tape recording You can tape 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 selecting the bus Your amplifier
3. e 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 integrated pre amplifier is connected to mains sockets that do not have an earth If this is the case please ensure that 1 Your integrated pre amplifier is connected via a multi way mains block which contains an earth point at each socket outlet This is to ensure that the chassis metalwork of each item is connected together 2 Use the connecting points on your Chord unit and connect to an available earth point 3 We recommend that an earthing method for your building is implemented safety warnings It is important that your integrated pre amplifier is earthed at all times via its own mains lead Failure to do this may be hazardous The power supply components within the amplifier are designed to be operated at lethal voltages and energy levels Circuit designs that embody these components conform with applicable safety requirements Precautions must be taken to prevent accidental contact with power line potentials Do not connect grounded test equipment These units comply with EN 50081 1 and IEC 801 2 Outputs on the CPA 2500 You need to connect the outputs on the back of your pre amplifier to a power amplifier in order to drive your loudspea
4. kers There are three pairs of outputs each of which will drive a 68 load You can connect to either the XLR or RCA outputs connecting to your power amplifier if it has balanced XLR style inputs 1 Use XLR style connectors to connect Right O P 1 to Right IN on your power amplifier and connect Left O P 1 to Left IN on your power amplifier 2 On your remote control press PRE and then O P 1 to select output 1 numbered 1 but not to both types at the same time connecting to your power amp if it has unbalanced RCA style inputs 1 Use RCA style connectors to connect Right O P 1 to Right IN on your power amplifier and connect Left O P 1 to Left IN on your power amplifier 2 On your remote control press PRE and then O P 1 to select output 1 if you want to bi amp Bi amping is a technique where you use one amplifier to drive the loudspeakers woofers low frequencies and another to drive the tweeters mid and high frequencies 1 Use XLR style connectors to connect Right and Left O P 1 to your first power amplifier 2 Use XLR style connectors to connect Right and Left O P 2 to your second power amplifier 3 Connect the outputs of your first power amplifier to your loudspeaker s low frequency inputs 4 Connect the outputs of your second power amplifier to your loudspeaker s high frequency inputs Remove any shorting links in the speaker binding posts 5 On your remote control press PRE and then OP 1 2 to select both outputs 1 and
5. m use hold your remote control flat and point it directly at your pre amplifier selecting your input source l 1 Press Bus A 2 2 Press one of Disc 1 Disc 2 Tape 2 Video or Radio adjusting the volume Press the volume button marked A to increase the volume 2 Press v to decrease the volume The volume chosen will be displayed on the digital display with figures from 0 to 98 choosing your output l 1 Press O P 1 if your output is connected to O P 1 on the back of your integrated amplifier Ze 2 Press O P 2 if you are using the line output from O P 2 on the back of your integrated amplifier 3 3 Press OP 1 2 if you are bi amping changing the balance 1 Press the balance button marked b to move the balance towards the left 2 Press q to move the balance to the right The direction you are moving the balance towards will be displayed on the digital display mute 1 Press Mute twice to mute the amplifier to unmute l 1 Press Mute twice again to unmute or Ze 2 Press the volume buttons up or down or 3 3 Turn the volume knob on your amplifier up or down 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 loudspeakers 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 amplifie
6. ord can cause the unit to shutdown Check that the speaker cables have no stray inner core wires touching each other as this can cause a short circuit CPA2500 Technical Information Harmonic Distortion 10Hz 90dB Do IKHz 9IdB IO AZ 89dB Ok AZ 87dB Intermodulation Distortion 100dB Signal to Noise Ratio 93dB Channel Separation 10Hz 110dB IKHz 100dB o IOKHz9IdB Do 20kHz 89dB Channel Balance 0 01dB Potentiometer Performance OdB 20dB 60dB O O5dB 02dB 024dB Po 1 secs 3 secs for full travel Unbalanced Inputs 6 RCA type Outputs A Balanced XLR O P1 2 Unbalanced RCA Unbalanced RCA 2 pairs for tape Frequency Range 2 5Hz 200kHz 3dB Maximum Input Voltage IV AC in 1 3V AC out 1 1 3 Input Impedance 47k ohms Maximum Output Voltage 15 6V rms balanced 7 8V rms unbalanced Output Impedance 470 ohms Power Consumption Dimensions amp Weight 420 x 88 x 355 13kg Chord Electronics Limited Tel 44 0 1622 721444 Fax 44 0 1622 721555 Email sales chordelectronics co uk Web www chordelectronics co uk
7. r changing the batteries in the remote control Simply undo the four small cross head screws on the side of your remote control You may need to run a sharp knife along the join to remove the battery casing then 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 Pre to set up the remote control for pre amplifier functions I ve connected 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 eg Disc 1 and the correct output eg 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 the amplifier was in standby mode and has turned itself off Changing connections while the amplifier is on for example dropping the stylus onto a rec
8. 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 O Balanced inputs have three pins and use Neutric XLR style connectors Pin 1 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 2 dielectric insulators for optimum performance Speakers Power Amplifier or integrated amplifier Pre amplifier CD player Audio Source when setting up To ensure that your Chord integrated amplifier works efficiently and safely please pay particular attention to the following Issues ventilation Your Chord integrated amplifier should have at least 5cm of clear space all around it to ensure a free flow of air at all times When driven continuously at well above average levels the temperature at the back of the unit may exceed 50 C This is normal and no cause for concern although it does highlight the need for adequate ventilation around the unit We recommend that you do not place your integrated amplifier directly on a carpet mains lead and plug All Chord equipment comes supplied with the correct mains 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 th
9. welcome Thank you for buying a Chord product Before you start to enjoy using to your Chord product please take a couple of minutes to read how to connect your audio equipment and loudspeakers to your pre amplifier or integrated amplifier and how to maximise your listening experience user guide for CPA 2500 pre amplifier The pre amplifier is the control centre of your system By connecting your audio sources to it you can choose the source you want at any particular time and control it You can also adjust the balance and volume before the signal is sent to a power amplifier Your pre amplifier can be operated manually or via the Chord remote control background We want you to be confident using your new Chord amplifier You re probably an audiophile with extensive knowledge of audio equipment However you may not be So in the following section we explain a few basics to help you get started or get you back up to speed if you re a little rusty 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 and other manufacturer s equipment Whichever cable you choose it is important to make sure it is fully screened to avoid any noise problems Balanced inputs carry twice
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