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SPHINX

    Project Eighteen

 7 

 

Connecting the optical cables

The Project Eighteen has an optical jack connector
for CONTROL IN and CONTROL OUT.

When the CONTROL IN of the Project Eighteen has
been connected to the CONTROL OUT of another
Sphinx component you don't have to switch the
Project Eighteen with ON/OFF switch (12.). The
power amp will automatically select Stand-by mode
as soon as the other component is set to stand-by.

In 'stand-by' mode the bias current of the power
amp is set to a lower level which drastically
decreases the temperature and power
consumption. On top of that it significantly
increases the life span of the component.
The power amp also warms up more speedily so
you will be able to enjoy it's maximum performance
without significant delay.

When the CONTROL OUT of the Project Eighteen
has been connected to the CONTROL IN of another
Sphinx component (which most likely will be another
power amp) this component will be selected to
stand-by by the Project Eighteen's stand-by mode.

Ensure proper connection of the optical cables
(from CONTROL OUT to CONTROL IN), otherwise
the LED next to the STANDBY button (1) on the
front panel may remain green although the stand-by
mode is activated.

If the Project Eighteen is placed in strong direct
sunlight the stand-by mode might be self-activated.
In that case you should place the supplied dummy
connector in the CONTROL IN (4.) jack (but only if
this is not being used).

We strongly recommend against placing the
component in direct sunlight though.

Connecting the mains power cable

Before you connect the cable please check
whether the mains voltage indicated on the
manufacturers label on the rear panel is the
same as your local mains voltage.

If not: please contact your dealer and do not
connect the component to the mains.

Connect the mains cable after you have connected
all other components in the system and have
double-checked all connections.

Summary of Contents for PROJECT EIGHTEEN

Page 1: ...1 USER MANUAL PROJECT EIGHTEEN DUAL MONO STEREO POWER AMPLIFIER ...

Page 2: ...ALLATION AND CONNECTIONS 6 Installation 6 Connections in general 6 Connecting loudspeakers 6 Connecting the inputs 6 Balanced 6 Unbalanced 6 Connecting the optical cables 7 Connecting the mains power cable 7 5 OPERATION 8 Power On 8 Power off 8 Warnings 8 If you encounter problems 8 6 CARE AND MAINTENANCE 9 7 TECHNISCHE DATEN 9 ...

Page 3: ...ng for a big power amp with two transformers To obtain the maximum quality from this power amp it is necessary to use it with top quality audio components So preferably use it with other Sphinx components Your local dealer will be able to answer any questions concerning other Sphinx audio components 1 UNPACKING Before leaving the factory every Project Eighteen is subjected to stringent and extensi...

Page 4: ...SPHINX Project Eighteen 4 3 THE POWER AMP AT A GLANCE Front panel 1 STANDBY To switch the component on and off 2 LED Indicates the selected function stand by red on green 1 2 ...

Page 5: ...and 8 down balanced 5 and 9 8 CINCH LEFT To connect the cinch cable from the left output of the signal source 9 BALANCED LEFT To connect the XLR cable balanced cable from the left output of the signal source 10 CONTROL OUT To connect the optical cable going to another Sphinx component 11 LEFT OUTPUT To connect the cable from the left loudspeaker red white 12 ON OFF This is the mains power master s...

Page 6: ...least signal quality loss Connecting loudspeakers We recommend using a double pair of cables if this is possible with the loudspeakers used one pair for the highs and another for the lows In most cases you will hear a substantial improvement in the sound quality but be careful to prevent shorted connections Your dealer can recommend the best cables and connection methods Connect the red RIGHT OUTP...

Page 7: ...er Sphinx component which most likely will be another power amp this component will be selected to stand by by the Project Eighteen s stand by mode Ensure proper connection of the optical cables from CONTROL OUT to CONTROL IN otherwise the LED next to the STANDBY button 1 on the front panel may remain green although the stand by mode is activated If the Project Eighteen is placed in strong direct ...

Page 8: ...around the 70 W mark Warnings 1 Never put two amps on top of each other 2 The component should not be subjected to moisture of fluids 3 Do not touch the component and the loudspeaker outputs in particular with moist hands this powerful amp can output voltages in excess of 36 volt 4 Before removing the top panel you should disconnect the mains cable and wait at least 30 minutes because the power su...

Page 9: ...1 20 000 Hz 2x 160 W into 8 ohm 22 0 dBW THD 0 01 2x 280 W into 4 ohm 24 5 dBW THD 0 01 2x 420 W into 2 ohm 26 2 dBW THD 0 01 Output voltage current max 36 V 43 A THD N IHF A 0 01 1 W into 8 ohm 1 20 000 Hz IMD 0 01 100 W into 8 ohm S N ratio IHF A 120 dB 1 W into 8 ohm Common Mode Rejection Ratio 80 dB 100 Hz Slew rate 50 V µs Damping factor 2000 1 20 000 Hz Input cinch unbalanced XLR balanced le...

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