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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 ©. © POWER - Switches the power on and off. © POWER LED - This 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. ■ 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 If the 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. If the 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. ■ 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 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) Harmonic Distortion, 60W, 8Q at 1kHz Peak current rating Input impedance Input sensitivity Gain (1kHz) Frequency response Noise (CCIR) ref. rated power Mains voltage Power consumption(max) Size W/D/H mm. Weight nett packed Supplied accessories 70W, both channels, 8Q —140W, single channel, 4Q, 1kHz 0.02% typical ±18 amps 7.5kQ 670mV for 75W/ 8Q 31.3dB±0.2dB 10Hz-20kHz ± 0.5dB -lOOdB 230V/115V ±12% 550VA 430x300x92 6.0kg 7.0kg Mains lead E&OE PROBLEMS? If your dealer is unable to answer any query regarding this or any other Arcam product please contact Arcam Customer Services on +44 (0)1223 440964 or write to us at the address on the back cover of this handbook. TECHNICAL SPECIFICATION Delta 290 Amplifier OutDut Dower (20Hz-20kHz at 0.5%THD) 70W, both channels into 80 Harmonic Distortion, 60W, 80 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&OE. HOW, single channel into 4Q, 1kHz 0.02% typical ± 18 amps ± 5dB at 100Hz and 10kHz -72dB at 1kHz Sensitivity 165mV -99dB typical 4.7kO >50dB Sensitivity 690mV 4.7kO Sensitivity 670mV 7.5kfl Sensitivity 2.6mV MM, 26Q«V MC -79dB MM, -73dB MC 47kO MM, 300Q MC 35dB 800mV 8V 1000 100Ü 8V 100Q 230V/115V ±12% 550VA 430x315x92 6.5kg 7.7 kg Mains lead CR 25 Handi-Remote...

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