Arcam Delta 290P User's Manual
Contents
1. bass treble and balance controls This affects all inputs and will generally give a small improvement in sound quality and a useful reduction in the level of background hiss BASS Rotate clockwise to boost the bass response and anti clockwise to cut the bass response For a flat response leave in the central click position TREBLE Rotate clockwise to boost the treble response and anti clockwise to cut the treble response For a flat response leave in the central click position BALANCE Rotate clockwise or anti clockwise to move the position of the stereo image This may be necessary if it is not possible to sit centrally between the speakers In normal use leave in the central click position SP1 Selects or defeats the main pair of speakers Push the button in to select SP2 Selects or defeats the secondary pair of speakers Push the button in to select HEADPHONES SOCKET Accepts headphones rated between 8 ohms and 2kohms fitted with a 6 3mm stereo jack plug Ifyour headphones are fitted with a different plug contact your dealer for a suitable adaptor Ifyou wish to listen on headphones only use SP1 and SP2 if necessary to mute the speakers The headphone socket is always switched on irrespective of the positions of switches and O REMOTE RECEIVER Ensure the remote receiver is not obscured or commands from the remote control handset will not be received POWER Switches the unit on an2. the Delta 290P should always be turned off first High quality interconnect cables should be used between the Delta 290 and Delta 290P The use of high quality interconnect and speaker cables in your system is essential to obtain good sound quality Cables from the AudioQuest range are ideal partners for Arcam products Contact your dealer for further details WARNING Ensure that the links connecting the red terminals and the black terminals on the speakers are removed before switching on the amplifiers Failure to do this could cause damage to one or both amplifiers and this is not covered under the warranty BIAMPLIFICATION WIRING DIAGRAM USING DELTA 290 and DELTA 290P TECHNICAL SPECIFICATION Delta 290P Power Amplifier Output power 20Hz 20kHz at 0 5 THD 70W both channels 8Q 140W single channel 4Q 1kHz Harmonic Distortion 60W 80 at 1kHz 0 02 typical Peak current rating 18 amps Input impedance 7 5kQ Input sensitivity 670mV for 75W 80 Gain 1kHz 31 3dB 0 2dB Freguency response 10Hz 20kHz 0 5dB Noise CCIR ref rated power 100dB Mains voltage 230V 115V 12 Power consumption max 550VA Size W D H mm 430x300x92 Weight nett 6 0kg packed 7 0kg Supplied accessories Mains lead E amp OE PROBLEMS If your dealer is unable to answer any query regarding this or any other Arcam product please contact Arcam Customer Services
3. DELTA 290 AMPLIFIER DELTA 290P amp XETA 290P POWER AMPLIFIER HANDBOOK Delta 290P Power Amplifier INTRODUCTION This manual is in 4 parts 1 This section has information relevant to both the Delta 290 and Delta 290P This includes Warnings and Cautions on use and details of how to bi wire your loudspeakers 2 D290 integrated amplifier operating instructions 3 D290P power amplifier operating instructions The Xeta 290P power amplifier has different front panel graphics but is functionally identical 4 Using the D290 amp D290P together to bi amp your loudspeakers N B Circled numbers eg O refer to items on the diagrams inside the flap of the front cover INSTALLATION O Check that your mains supply voltage agrees with the voltage setting indicated on the rear panel of the unit Ifyour mains supply voltage is different consult your Arcam dealer MAINS SAFETY This product 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 a mains socket If the plug is removed then the remaining Jead must be rewired as follows The blue wire must be connect
4. akers in a five speaker Dolby Pro Logic system Contact your Arcam dealer for more detailed information Daisy Chain The Delta 290P is capable of driving further Delta 290P amplifiers or any other power amplifier to drive more speakers eg those in other rooms or tri amplified speakers etc Connect the extra power amplifier inputs to the PREAMP OUT outputs O left to left right to right FRONT PANEL 0 0 SP1 and SP2 Pressing the SP1 switch turns on the speakers connected to the SP1 upper set of output terminals on the rear panel Similarly the SP2 switch turns on the speakers connected to the SP2 lower set of output terminals Both the SP1 and SP2 switches can be turned on at the same time provided that the combined impedance of the two pairs of speakers does not fall below 4 ohms per channel Important note If both switches are turned off then the amplifier will appear not to be functioning as all speakers will be switched off HEADPHONES SOCKET Accepts headphones rated between 8ohms and 2kohms fitted with a 6 3mm stereo jack plug If your headphones are fitted with a different plug contact your dealer for a suitable adaptor The headphone socket is always switched on irrespective of the positions of switches and O i G POWER Switches the power on and off O POWER LED This will initially glow amber After a few seconds it will glow green When the LED glows amber the speakers are disc
5. another input whilst recording on TAPE 1 by use of the LISTEN selector If your tape recorder is a 3 head design this will allow A B monitoring of the actual recording while it is taking place Switching the listen switch between the original source and TAPE 1 during recording will then allow you to make a true before and after A B comparison PLAYBACK TAPE 1 Set LISTEN to TAPE 1 and set your tape recorder in its playback mode RECORDING AND PLAYBACK TAPE 2 Proceed as above except use the TAPE 2 sockets and select the input to be recorded by use of the LISTEN selector Use the PROCESSOR TAPE 2 button when monitoring or playing back the recording Do not move the listen selector whilst recording or you will lose the signal TAPE TO TAPE DUBBING The Delta 290 allows 2 way tape dubbing copying from TAPE 1 to TAPE 2 or vice versa For example to copy from a recorder connected to the TAPE 2 sockets to a recorder connected to TAPE 1 first switch the RECORD selector on the Delta 290 to TAPE 2 This routes the TAPE 2 signal to TAPE 1 s output Then set the first tape recorder into its record mode and the second to playback mode to enable the transfer to take place If you wish to monitor the transfer while it is taking place switch LISTEN to TAPE 1 To record from TAPE 1 to TAPE 2 set listen to TAPE 1 To monitor push the PROCESSOR TAPE 2 button in PRE POWER CONNECTIONS o PWR AMP IN To use your Del
6. d off POWER LED The LED above the POWER switch will initially glow amber After a few seconds it will glow green When the LED glows amber the speakers are disconnected and an internal protection circuit is activated or the unit has been muted by use of the remote control If this LED glows amber during normal use it may be due to the amplifier overheating or an output overload Check the amplifier is properly ventilated Switch the amplifier off and wait for 2 3 minutes before switching on again Ifthe LED continues to glow amber switch the unit off remove all the speaker cables and switch on again If the LED goes to green upon switch on then check the speaker and speaker cables for short circuits before reconnecting them Ifthe LED continues to glow amber with no speakers connected contact your Arcam dealer TAPE RECORDING Both sets of tape sockets TAPE 1 and TAPE 2 are identical in sensitivity and suitable for use with almost any type of recorder cassette hi fi VCR reel to reel DAT etc RECORDING TAPE 1 Any input signal available on the Delta 290 may be routed to the TAPE 1 output sockets by using the RECORD selector to select the appropriate input Set your tape recorder into its recording mode and the selected input will be recorded Selecting the same input to listen to will not affect the signal sent out to the recorder and will now enable you to listen to the input being recorded You may listen to
7. ed to the terminal which is coloured blue or marked with the letter N m The brown wire must be connected to the terminal which is coloured brown or marked with the letter L The green and yellow wire must be connected to the terminal which is coloured green and yellow or marked with the letter E or the safety earth symbol When replacing the fuse in the supplied moulded mains plug the integral fuse holder cover must always be refitted a Waring This apparatus must be earthed SAFETY STANDARD a This product has been designed to meet the IEC 65 international electrical safety standard MAINS SUPPLY CONNECTIONS O Insert the IEC line socket of the mains lead fully into the power inlet on the rear panel Connect the other end to your mains supply CAUTION Your Delta 290 and D290P generate heat when in use particularly at higher volumes It is therefore most important never to obstruct the ventilation slots on the top and bottom of the unit as this will cause overheating If the temperature of the internal heatsinks rises above a safe level then a thermal cut out within the amplifier will operate The POWER LED on the front panel will tum amber and the output protection relays will temporarily remove the feed to the loudspeakers The system will reset itself as the heatsinks cool down Please note that under certain extreme conditions it is possible for the Delta 290 or D290P s thermal cut out to operate when p
8. he switch set to NORMAL the unit functions as a standard amplifier For use with A V decoders with its own volume control such as the Arcam Xeta 2 set the switch to A V READY This bypasses the Delta 290 s volume control when PROCESSOR TAPE 2 input is selected to provide a fixed gain amplifier The volume control and MUTE cannot be operated by remote in this situation LISTEN SELECTOR Selects the input you wish to listen to This signal also goes to the TAPE 2 output sockets for recording on a cassette deck or for external processing The selector can also be operated by remote control See Remote Control Functions RECORD SELECTOR Selects the input you wish to record on TAPE 1 This operates independently of the LISTEN function VOLUME Adjusts the volume level of the loudspeakers and headphones Note that with the volume at minimum it may be possible to still hear music very faintly This is normal VOLUME can alo be operated by remote control See Remote Control functions PROCESSOR TAPE 2 This is a tape loop to enable monitoring of recording on a 3 head cassette deck It can also be used to enable line inputs to be sent to an external surround decoder such as the Arcam Xeta 2 for processing before being routed back to the amplifier For playback ofa cassette deck or if using an A V processor attached to TAPE 2 press the button in Note PROCESSOR TAPE 2 is not remote controllable DIRECT Bypasses
9. hronise the operation ofany Arcam CD player or transport cassette deck or remote control tuner with the LISTEN selector on the Delta 290 all at the touch of a single button For example using the remote in CD mode press PLAY and the CD player will start the disc and the LISTEN function selects CD If this facility is not required the internal selector switch should be set to UNIQUE The LISTEN selector switch can still be operated by either remote control handset The MUTE button mutes the speaker connections and pre amp outputs Both tape outputs however remain active In MUTE mode the power LED will turn amber until mute is disabled by either pressing MUTE again or pressing volume Note Input selection may also be made via the CR25 and CR200 remote control handsets Where fitted the phono stage is selected with the PHONO button All other inputs are made active when the relevant button is pressed TAPE 2 may be chosen via the front panel switch but not by the remote control handset The SHIFT button does not initiate any functions within the Delta 290 290P DELTA 290P POWER AMPLIFIER Please refer to drawing inside front cover LOUDSPEAKER CONNECTIONS 0 0 6 6 The speaker terminals are colour coded red for positive and black for negative These terminals are also labelled R for the right channel speakers and L for the left channel speakers Connect terminals O to your right speaker and termina
10. laying music at very high levels If you have only one tape deck connect it to the TAPE 1 sockets TAPE 1 RECORD OUT Connect to your tape deck s input RECORD TAPE 1 PLAY IN Connect to your tape deck s output PLAY TAPE 2 RECORD OUT Connect to your tape deck s input RECORD or to your A V processor s Tape or Line inputs TAPE 2 PLAY IN Connect to your tape deck s output PLAY or to your A V processor s Tape or Line outputs A V Suitable for connecting an Audio Visual product such as a VCR Laserdisc player or Nicam tuner CD For connecting your CD player or DAC TUNER For connecting your radio tuner AUX For connecting any unit with a line level output eg tape deck tuner etc PHONO OPTION Please note The phono inputs are on a separate plug in module which your Arcam dealer or distributor can supply and fit This module is compatible with most high output moving coil and moving magnet cartridges MM and low output moving coil cartridges MC MM or MC is selected via an internal switch Your cartridge type should be specified when the module is fitted MM For connecting a turntable fitted with a high output moving coil or a moving magnet MM cartridge MC For connecting a turntable fitted with a low output moving coil MC cartridge GROUND TERMINAL For connecting your turntable s earth lead if fitted OPERATION OF THE DELTA 290 o NORMAL A V READY SWITCH With t
11. ls to your left speaker Connect the red cable termination to the red terminals and the other cable termination to the black terminal If your speaker cable has bare ends the positive conductor can usually be identified by a ridge or coloured marking Ensure that no stray strands are allowed to touch another cable or the amplifier s casing This can cause a short circuit and damage your amplifier To drive a second pair of speakers connect terminals O to the right speaker and terminals to the left speaker Except the Alpha One CD player which uses a different remote control language The Delta 290P can drive two pairs of loudspeakers simultaneously if required providing both pairs are rated between 8 and 16 ohms Either pair can be selected using the switches labelled SP1 and SP2 on the front panel To avoid overheating the combined load impedance as seen by the amplifier should not fall below 4 ohms per channel CONNECTING YOUR SOURCE COMPONENT o o PWR AMP IN Connect to your pre amplifier outputs PREAMP OUT The 290P can be connected to provide two mono outputs from a single input Using the U link O supplied connect the PREAMP OUT sockets O together Utilising one Delta 290P per loudspeaker in this manner will allow bi amplifying of bi wireable loudspeakers This is particularly beneficial for top quality stereo installations with a separate pre amplifier or for the left centre and right channel loudspe
12. on 44 0 1223 440964 or write to us at the address on the back cover of this handbook TECHNICAL SPECIFICATION Delta 290 Amplifier Output power 20Hz 20kHz at 0 5 THD Harmonic Distortion 60W 8Q at 1kHz Peak current rating Tone controls typical variation L R Crosstalk INPUTS Line inputs Noise CCIR ref rated power Input impedance Overload margin A V loop input A V mode Input impedance Power amp in Input impedance Phono board if fitted Noise CCIR ref rated power Input impedance Overload margin OUTPUTS Preamplifier Output Nominal output level Maximum output level Output impedance Tape AUX outputs Output impedance Headphones Maximum output level into 6000 Output impedance Mains voltage Power consumption max Dimensions W D H mm Weight nett packed Supplied accessories E amp OE 70W both channels into 80 140W single channel into 40 1kHz 0 02 typical 18 amps SdB at 100Hz and 10kHz 72dB at 1kHz Sensitivity 165mV 99dB typical 47kQ gt 50dB Sensitivity 690mV 47kQ Sensitivity 670mV 75kQ Sensitivity 2 6mV MM 2604V MC 79dB MM 73dB MC 47k MM 3000 MC 35dB 800mV 8V 100Q 100Q 8V 1000 230V 115V 12 550VA 430x315x92 6 5kg 72kg Mains lead CR 25 Handi R emote
13. onnected and an internal protection circuit is activated If this LED glows amber during normal use it may be due to the amplifier overheating or an output overload Check the amplifier is properly ventilated Switch the amplifier off and wait for 2 3 minutes before switching on again Ifthe LED continues to glow amber switch the unit off remove all the speaker cables and switch on again If the LED goes to green on switch on then check the speaker and speaker cables for short circuits before reconnecting them Ifthe LED continues to glow amber with no speakers connected contact your Arcam dealer ADDING A DELTA 290P TO AN EXISTING DELTA 290 If you are using a Delta 290 a Delta 290P can be added to bi amplify a pair of bi wireable loudspeakers This will reap substantial improvements in sound quality if the following precautions are observed m Always switch on the Delta 290 and allow it to stabilise indicator light turns green before switching on the Delta 290P The Delta 290 and Delta 290P power amplifier are placed on separate shelves Stacking the units on top of each other will reduce the sound quality slightly It will also reduce ventilation and consequently the power handling capability The existing Delta 290 should be used to drive the loudspeakers HF high frequency units The new Delta 290P is utilised for the LF bass drivers as shown in the wiring diagram below At the end of a listening session
14. ta 290 as a power amplifier connect the output of your pre amplifier to PWR AMP IN Set the internal selector switch to EXT INPUT position Under these circumstances it has exactly the same specification and performance as a Delta 290P power amplifier Contact your dealer or Arcam for more details PREAMP OUT To use your Delta 290 as a pre amplifier connect PREAMP OUT to your power amplifier s input Please note the PREAMP OUT sockets are permanently active REMOTE CONTROL FUNCTIONS Your Delta 290 amplifier is supplied with the Arcam CR25 Handi Remote infra red remote control handset which has buttons to allow the simple operation of other products It is supplied with 2AA batteries ensure these are inserted correctly The remote allows you to operate the Delta 290 plus some basic functions of an Arcamt or Philips based CD player a remote controlled tuner such as the Arcam Delta 280 the Arcam Delta Black Box 500 DACC and an Arcam amplifier with remote control facility the Alpha 6 Alpha 6 Plus Delta 110 110S pre amplifiers and the Xeta One Two Home Cinema amplifiers Note versions of the Delta 280 FM tuner manufactured before April 1995 will not respond to the programme up down buttons on the Handi Remote REMOTE MODE The Delta 290 is fitted with an internal Remote Mode selector switch which is factory set to NORMAL In NORMAL mode the Arcam Handi Remote or Arcam CR 200 System Remote will sync
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