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Delta no digital pre-amplifier
Delta 110 digital pre-amplifier
Introduction
amplifier, the Delta 120, have been designed to meet the requirements of
the most demanding listener Combining excellent sound quality with
modern but restrained styling, the Delta 110 and 120 will provide the
heart of any high quality sound system.
inputs. These accept signals from a turntable, tuner two tape inputs and
an AV component, such as a stereo VCR or the Arcam Delta 150 Nicam
stereo TV tuner
signal directly from the digital output of a compact disc player, such as
the Arcam Delta 170 transport, or DAT player
and 'record'functions, allowing the user to listen to one programme at
the same time as recording another from an entirely separate source.
110 is provided with an infra red remote control handset, which
operates the input selection, mono, mute and volume controls.
best results from your pre and power amplifiers. Remember your dealer is
there to help you. He has full technical and service information for all
Arcam products and considerable experience of their use in a variety of
systems. If, however, he is uhable to answer your query, then do not
hesitate to contact us here directly.
The Arcam Delta 110 pre-amplifier and its matching power
The Delta 110 pre-amplifier has five switchable analogue
The Delta 110 also has two digital inputs which accept the
The switching system of the Delta 110 offers separate 'listen'
To increase further its versatility and ease of use, the Delta
Please study this manual carefully to ensure that you get the
Delta no digital pre-amplifier
Installing and using your Delta 110 pre-amplifier
Mains Supply
_ The Arcam Delta 110 may be supplied to work on any of the
following AC voltages: 110V/220V and 120V/240V (1OOV units can be
supplied to special order). Check that your local mains supply voltage
agrees with the voltage setting indicated on the back panel of the Delta
110. If not, please contact the factory or your national distributor for
details of how to proceed further
A detachable mains lead is supplied with the Delta 110. The
cores of this lead are coloured in accordance with the following code:
Green and yellow - Earth
Blue ^Neutral
Brown - Live
Note: Export units for certain markets have moulded mains
plugs fitted as standard.
As the colours in the mains lead may not correspond with
the coloured markings identifying the terminals in your plug, proceed
as follows:
The wire which is coloured green and yellow must be
connected to the terminal on the plug which is marked by the letter E or
to the safety earth symbol, or to the terminal coloured green or green
and yellow. The wire which is coloured blue must be connected to the
terminal which is marked by the letter N or coloured black or blue. The
wire which is coloured brown must be connected to the terminal which
marked by the letter L or coloured red or brown.
Fuses
If the mains plug is fused, fit a 3 amp fuse.
The AC supply inlet to the Delta 110 uses a standard lEC
chassis mounting plug.
The lEC line socket on your mains lead and the lEC plug on
the Delta II0 are a tight fit; before first using the Delta 110 it is therefore
important to ensure that the socket is firmly pushed home into the
chassis plug.
Under no circumstances should the Delta 110 cover be
removed unless the supply is disconnected at the wall socket.
Notice
1. Please retain the carton and all packaging materials
provided with this equipment so that it may be repacked correctly
if it ever becomes necessary to transport the unit or to return it
for service.
2. If servicing is required then the equipment should be
properly packed and returned to the dealer from whom it was
purchased. It is essential to include a covering letter giving your
name and address and a brief but thorough description of the fault.
Connections and warming up
There are two points that should be noted before using your
Delta no.
Firstly, it is advisable that your system is switched off before
connecting it up to the Delta 110. This will avoid possible damage to
your loudspeakers. At the very least ensure that the volume control on
the amplifier is turned down, or an unused input is selected.
Secondly, although the Delta 110 will play music within
seconds of switching on, in common with other audiophile products its
internal circuits take some time to stabilise fully. We have found that the
very best sound quality may not be obtained until the unit has had some
time, possibly up to twelve hours or more, to warm up.
Delta no digital pre-amplifier
Rear panel connections
All analogue audio inputs and outputs are via RCA phono
connectors. All the phono sockets on the Delta 110 are marked 'L' for the
left channel and 'R' for the right channel, with the left channel nearer
the top of the cabinet. Your connecting leads will be marked either 'L' or
'R', or will have a white or black plug for the left channel and a red plug
for the right.
Disc input
For the purposes of playing records, the Delta 110 can accept
both moving magnet and moving coil cartridges. For either type of
cartridge, the plugs on your turntable lead should be connected to the
disc input sockets on the rear panel of the unit. A switch just to the side
of these sockets allows the selection of either MM or MC input.
The switch should be left out for use with MM and high output MC
cartridges, and depressed for use with low output (normal)
MC cartridges.
If your turntable has a separate earth lead then this should
be firmly attached to the earth terminal to be found on the rear of the
amplifier, just above the MM/MC selector
Note
Never operate the MC/MM selector on the rear of the
amplifier with the volume control turned up, as the resultant electrical
surge may damage your loudspeakers.
A/V input
This is a line input of 200mV sensitivity. It is suitable for use
with many A/V and normal audio products, such as the Arcam Delta 150
Nicam Stereo TV tuner, the audio output of a VCR, or the analogue
output of a CD player or laser disc player
Tuner input
The tuner input is suitable for use with almost any AM or FM
tuner Connect your tuner to the pre-amplifier using the phono sockets
marked 'tuner'.
Tape inputs/outputs
The Delta 110 has the facility to connect two tape recorders,“
and is suitable for use with almost any cassette deck, open reel deck or
stereo VCR.
1. Connect the 'record'(or'line in') sockets of your tape deck
to the phono sockets marked 'out' on the rear of the Delta 110, using
phono-phono leads.
Delta 110 digital pre-amplifier
2. Connect the 'playback' (or 'line out') sockets of your tape
deck to the phono sockets marked 'in' on the rear of the Delta 110, using
phono-phono leads.
Outputs
The Delta 110 is equipped with two identical line outputs
compatible with power ampiifiers requiring inputs in the range of
500mV to 2V for full power output.
Both pairs of outputs may be used simultaneously if required.
The outputs are short-circuit proof, and are also
automatically muted at switch-on and switch-off.
The output impedance of the Delta 110 is sufficiently low at
25 ohms to allow for runs of audio cable up to about 20 metres to be
used without any serious degradation of sound quality.
Note
A pair of good quality pre to power amplifier interconnect
cables is provided as standard with the Delta 110, but please refer to
'Connecting cables' on page for further information on this
important topic.
Digital inputs
The Delta 110 incorporates an advanced Push-Pull Bitstream
digital to analogue converter
This will accept the digital output signals from compact disc
piayers or domestic DAT recorders that conform to the S/PDIF standard
(Sony/Philips digital interface). Optical and 75ohm co-axial inputs are
'■ovided. Both inputs will switch automatically between the CD
„ jmpling rate (44.1 kHz) and the DAT sampling rate (48kHz).
Both 75ohm co-axial and Toslink type optical interconnects
of approximately 0.75m length are supplied. These make connecting
your CD player or DAT player to the Delta 110 very straightforward.
If longer cables are required, they should be of the correct
type - for example, regular audio phono-to-phono cables are generally
not suitable. A 75ohm co-axial (aerial or video) cable terminated with
phono plugs should be used.
We particularly recommend AudioQuest video cables (Video
X and Video Z) obtainable from your Arcam dealer or, in case of difficulty,
directly from the factory in the U.K.
Digital monitor output
The digital monitor output is a phono-type co-axial socket
which provides an exact duplicate of the digital input seiected on the
front panel.
For example, if the co-axial input is selected, and it is
connected to your CD player, that digital signal can be fed via 75ohm
co-axial cable into the digital input of a DAT player in order to record
(assuming that the DAT player is compatible with the 44.1 kHz
sampling rate).
The digital monitor output can also be used to 'daisy chain' a
digital signal to a further outboard D/A converter or digital processor.
Note
Because the digital monitor output socket duplicates an
input signal, it cannot change the sampling frequency i.e. a 44.1 kHz
input is sent on as a 44.1 kHz signal.
Delta I IO digital pre-amplifier
Front panel controls
Mains power switch
The Delta HO is turned on by depressing the power switch.
The small LED (light emitting diode) above the switch will glow green.
After a second or two, you may hear a gentle click from inside the
pre-amplifier This indicates that the various signal switching and muting
relays are taking up their correct settings, and that the unit is ready
for use.
To turn off the Delta 110, depress the power switch again, so
that it unlatches. The LED will go out.
Standby mode
When the Delta 110 is switched off with the remote control
handset, it is in the 'standby' mode.
In 'standby', the listen'and 'record'selectors are dis
engaged. All LEDs are extinguished (except the power LED) and the
audio output is muted.
We recommend leaving the Delta 110 in the 'standby' mode
when not in use, in order to obtain the best possible sound guality when
switching on again.
Input selection
Function selection of all the Delta 1 lO's seven inputs is
carried out by microprocessor control with one-touch push buttons.
Status is indicated by a row of LEDs, one above each
control button.
This technigue enables the Delta 110 to be operated via its
infra-red remote control handset if required.
The system permits separate 'listen'and 'record’functions,
allowing one input to be listened to, whilst another input is
being recorded.
By connecting an integrated amplifier (and a pair of speakers)
to one of the Delta 1 lO's tape outputs, any source selected with the
'record'button on the Delta 110 will be routed through to the
integrated amplifier, making a very simple, but practical and affordable
multi-room system.
Listen function
Select the input you wish to listen to by depressing the
relevant button, i.e. disc, AV tuner, tape 1, tape 2, co-axial digital or
optical digital.
The selected input signal is then routed to the pre-amplifier's
main outputs and headphones socket.
Delta 110 digital pre-amplifier
The LED above the selected input will glow green. Do not
attempt to push more than one button at a time.
Adjust the volume as required.
Record function
See page 9 for full details on tape recording and dubbing.
The 'record' button is used to select the source required for
recording. The signal is routed to both tape outputs, which are
compatible with cassette decks, open reel decks, hi-fi stereo VCR's or the
analogue Inputs of DAT recorders.
The 'record' button acts rather like a shift key on a computer
or calculator When it has been depressed, the red LED above the
'record'button will flash for approximately 5 seconds. While the LED is
flashing, any of the 7 function buttons may be selected, to determine
which input is to be recorded (i.e. routed to the tape outputs). The LED
above the selected input will now glow red.
Notes
1. Because the Delta 110 incorporates only one set of digital
to analogue converters (DACs), it is not possible to listen to one of the
digital sources whilst recording the other
2. If you have chosen to record from the same source that
you are listening to, for instance 'tuner', the LED above the 'tuner' input
will simply glow green and no red LEDs will be visible above the input
buttons. If you then select another input to listen to, for instance 'disc',
the LED above the 'tuner' input will now glow red, to indicate that the
tuner is being recorded, and the LED above the 'disc' input will now
''ow green, to indicate that a disc has been selected to listen to.
Phase switch
This is an absolute phase reversal switch which operates on
the co-axiai and optical digital inputs only. Its use is not essential as the
difference in sound between the two positions is normally small.
However, it does give the more enthusiastic listener the opportunity to
achieve optimum results.
Due to the electronic complexity of the recording process,
some CDs are produced with absolute phase inversion and can sound
better when phase reversed. For example, a drum sound which should
be reproduced by the forward motion of your loudspeaker diaphragms,
when phase inverted becomes a signal which moves them backwards.
The phase switch allows you to correct this reversal.
Normal phase reproduction is achieved when the LED above
the phase switch glows green. For absolute phase reversal push the
phase switch once, and the LED with glow red. A second push will cause
the system to revert to the normal position again.
The switch position for a particular recording should be
determined by listening. We suggest that by colour coding your CDs to
match the phase switch LED, you can have easy reference to preferred
switch settings in future.
Note that the phase LED will only be illuminated when one
of the digital inputs is selected, for either listening or recording.
Mono
The Delta 110 is in its normal stereo mode when the LED
above the mono button is not illuminated. Then the left and right input
signals are amplified independently to feed the corresponding main
outputs and stereo headphones jack socket.
When the mono button is depressed, the LED above it glows
green. The left and right signals are then mixed together and the
combined signal is routed to the main outputs and headphone socket.
This is particularly useful when listening to mono records or tapes (as
much of the low frequency out-of-phase rumble can be eliminated) or to
remove excessive hiss from weak FM broadcasts. It is also invaluable for
checking speaker phasing in a stereo hi-fi system.
Depressing the mono button a second time will restore the
system to stereo operation.
Delta n 0 digital pre-amplifier
Balance control
This is set so that in the normal (' 12 o'clock') position the left
and right signals are amplified equally. Adjusting the balance control anti
clockwise will then move the stereo image to the left; moving the
control clockwise moves the image to the right.
For optimum performance the balance control is inside the
feedback loop of the Delta 1 lO's line amplifier stage. As the control's
range is limited to approximately + 1 OdB, it is not possible to mute one
channel completely.
Volume control
This adjusts the listening levels of the left and right channels
together, through both loudspeakers and headphones. Note that neither
the volume or balance controls affect the level of signals sent to the
tape outputs.
The volume control is motorised for remote control (see p
10). The special clutch used allows it to be adjusted manually without
any risk of damaging the drive motor Flowever, take care not to force
the volume knob beyond its end stops (at approximately 7 o'clock for
minimum volume and 5 o'clock for maximum).
Headphones socket
The Delta 110 incorporates its own high quality headphone
amplifier which is suitable for both high and low impedance headphones
using a standard 'A inch (6.35mm) jack plug. It is not generally suitable
for use with electrostatic headphones.
Note that the Delta 110's two main stereo outputs are
automaticaliy muted when the headphone jack is pushed home.
Delta no digital pre-amplifier
Tape recording
Tape recording
The Delta 110 is extremely versatile when using tape
, reorders, allowing you not only to record from one source but also to
listen to another source at the same time.
Both sets of tape sockets ("tape 1 'and 'tape 2') are identical
in function and suitable for use with almost any type of recorder
(cassette, hi-fi VCR, reel to reel, DAT, etc.).
Connecting up
Connect your tape recorder to the 'tape I ' sockets, using the
in'sockets for playback and the out'for record. A second machine may
be connected to the 'tape 2' sockets in the same way, if required.
Recording ¡'tape 1 ')
Any input signal available on the Delta 110 may be routed to
the 'tape I ' output sockets by using the 'record' button to select the
appropriate input, as described on page 7. Set your tape recorder into
its recording mode and this 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.
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
between the original source and the 'tape I 'button during recording
will then allow you to make a true 'before and after'(A-B) comparison.
Playback ('tape 1 '(
Push the 'tape I ' button.and set your tape recorder in its
playback mode.
Recording and playback ('tape 2'|
Proceed exactly as above, except use the 'tape 2' sockets and
'tape 2' button when monitoring or playing back the recording.
Tape to tape dubbing
The Delta 110 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
1 'sockets to a recorder connected to 'tape 2', first push the 'record'
button on the Delta 110 and then select 'tape 11 This routes the 'tape 1'
signal to 'tape 2's' output. Then set the second tape recorder into its
record' mode and the first to 'playback' mode to enable the transfer to
take place.
If you wish to listen to this transfer while it is taking place do
not push the 'tape 1' button to try to listen as this will disable the signal
sent out from 'tape I'to 'tape 2: Instead, push the'tape 2'button to
listen to the signal routed back to the pre-amplifier via the second tape
recorder's own amplifiers.
This logic is built into the control program to avoid tape
feedback loops. Therefore, it is not possible to assign both 'listen' and
'record' functions at the same time to either 'tape 1' or 'tape 2'.
If the 'listen' function is already 'tape 1' (or 'tape 2') and the
equivalent 'record'function is selected, the command is ignored.
If the 'record'function is already 'tape 1 '(or'tape 2') and the
equivalent 'listen' function is selected, then the 'listen' selection will
override the 'record', which will be disabled.
Delta 110 digital pre-amplifier
Remote control of the Delta 110
The CR20 remote control handset is supplied with the Delta
110. It is powered by 4 x alkaline manganese AAA cells (supplied), which
are inserted in the base of the handset. To access the battery
compartment, slide the whole bottom panel forwards approximately
5cm (2 inches).
Take care to insert the batteries the right way round. We
recommend that the batteries should be removed from the handset if it is
not to be used for some time.
Using your CR20 remote control
The CR20 remote handset has a range of about 5 metres, and
should always be pointed at the centre of the Delta 110. Take care not to
obstruct the remote receiver (located immediately below the mute LED)
or the pre-amplifier will not accept the handset's commands.
When using your handset, hold each button down for about
I second. Do not attempt to press more than one button at a time.
The CR20 allows remote selection of any of the seven inputs,
together with the absolute phase of the digital inputs, and mono/
stereo selection.
In addition the CR20 allows the user to adjust the volume
control up and down by pressing the 'volume'-I- and - keys. These
activate a small motor behind the volume control; it takes approximately
6 seconds to go from zero to maximum or vice-versa. It is not possible to
adjust the balance by remote control.
The mute button reduces the output level of the pre
amplifier by 40dB - when it is activated the mute LED in the centre of
the pre-amplifier glows red. This can be most useful when taking
telephone calls or answering the front door etc. Pushing the mute
button for a second time will restore normal operation.
The red standby button puts the whole pre-amplifier into
'standby' mode. All inputs/outputs are disabled and only the green
power LED remains on. Nevertheless, all power supplies remain active,
keeping the Delta 110's circuits fully warmed up and ready for use.
All functions may be restored to their pre-standby status by
pressing the standby button for a second time.
Notes
1. If the remote control becomes lost or accidentally
disabled, it is possible to remove the Delta 110 from its standby or mute
modes by briefly switching the unit off and on again with the mains
power switch.
2. The 'record' function has been deliberately omitted from
the remote control in order to avoid accidental or inadvertent operation.
3. The volume control of the Delta 110 may also be operated
by the CR10 remote control handset supplied with Arcam CD players
(Arcam Alpha, Delta 70.2 and Delta I 70 models). Other handsets that
use the Philips RC-5 system may also be compatible.
4. The two unmarked buttons on the CR20 have
no function.
10
Delta no digital pre-amplifier
Cartridge loading modules
These optional accessories are passive, switchable modules
signed to modify the input impedance of the amplifier in order to
'obtain the best match with the cartridge in use. As the Delta 110 has a
single set of disc inputs (switchable to MM or MC via the switch on the
rear panel), then two separate loading modules - one for moving
magnet (type ULM/M) and one for moving coil (type ULM/CJ cartridges
- are available on request from your dealer, distributor or the factory.
These modules are user adjustable via a series of small switches.
The appropriate MM or MC loading module should be
plugged into the amplifier on the pins located close to the disc input (see
section - Removal of Top Plate - below). A set of instructions is provided
with each module. Care should be taken to ensure that only an MM
loading module is used in conjunction with moving magnet or high
output moving coil cartridges and that only an MC loading module is
used in conjunction with normal (low output) moving coil cartridges.
Under no circumstances adjust the loading module switches
when the amp is switched on and the volume turned up as severe
damage may occur to your amplifier or speakers.
It must be emphasised that these passive modules have a
subtle effect on the sound balance and frequency response. They will
have little or no effect on the sensitivity of the amplifier Most cartridges
will perform satisfactorily without any loading module.
Before fitting a cartridge loading module, it is ESSENTIAL to
note the precautions detailed below
Removal of top plate
The installation of a loading module is a straightforward
operation provided you follow the instructions. If you are in any doubt,
please consult your dealer
Should you need to install a cartridge loading module, before
removing the top plate ALWAYS SWITCH OFF THE AMPLIFIER AND
DISCONNECT IT FROM THE MAINS SUPPLY
Note that the mains fuse remains live whenever the amplifier
is plugged into the mains, even when the amplifier power switch is in
the'off'position.
To remove the top plate, unscrew the two black headed
screws at the top of the rear panel using a No. 1 'Pozidriv' screwdriver.
Lift the top plate vertically and pull it backwards slightly to release it.
Replacement is simply the reversal of this procedure.
Connecting cables
When dealing with high quality hi-fi systems, such as those
based around a unit with the resolving power of the Delta 110, the
question of connecting cables becomes of paramount importance. We
strongly recommend that only first class loudspeaker and interconnect
cables be used with your hi-fi system. We have found interconnect and
loudspeaker cables from the AudioQuest range to be particularly
suitable. Detailed information on the AudioQuest range of cables may
be obtained from your dealer or the factory.
As a rule of thumb you might budget to spend between 5%
and 20% of the price of your system on cable. Surprising though it may
seem this can be one of the most effective upgrades you can carry out
on your system.
We suggest that you discuss the question of interconnect
and loudspeaker cables with your dealer
Delta 110 digital pre-amplifier
Check list
Should you have any difficulty in operating your pre
amplifier, check the following before suspecting that a fault
has developed.
No power and LED not illuminated. Check that:
1. the mains supply is connected and that the mains lead is
fully home in the mains inlet socket at the rear of the amplifier
2. the mains is switched on and that the power switch on
the front panel is depressed and has fully latched.
3. the fuse in the mains plug has not blown and that the
mains socket in the wall is live (test with another item/appliance).
Power on and LED illuminated but output from
one loudspeaker only. Check that;
1. the output leads are connected into the correct input
sockets on the power amplifier
2. both the left and right channeis of the selected source are
connected correctly and the input wiring is not faulty (check by
swapping over the left and right input connectors). If in doubt contact
your dealer.
3. the balance control is positioned at' 12 o'clock'.
Loud hum heard through loudspeakers when DISC
is selected. Check that:
1. the ground lead from the turntable (if fitted) is connected
firmiy to the ground terminal on the rear of the amplifier
2. the amplifier is correctly earthed via the mains lead.
3. your cartridge is not sited directly above your amplifier's
mains power transformers ¡move the amplifier away and check if the
hum level changes).
4. other transformers in the vicinity are not radiating into the
Delta 110.
Loud hum heard through only one loudspeaker
when DISC is selected. Check that;
1. the ground wire is not faulty within the respective
channel's lead. This is easily checked by swapping over the leads and
checking if the hum moves to the other channel.
2. the headshell leads connected to the cartridge on the
respective channel are not faulty or loose. If in doubt please consult
your dealer
Power on and LED illuminated but no output from
the amplifier. Check that:
1. the amplifier is connected to the desired input and that
the correct input on the amplifier is selected.
2. the output leads are connected to the correct input
sockets on the power amplifier
3. the volume control is not set to minimum.
4. if'disc'is selected, that the cartridge selector switch is set
to the correct type of cartridge. NB. Do not operate this switch with the
volume control turned up.
5. if 'CD' is selected, your machine is playing a CD.
6. the pre-amplifier is not in 'mute' or 'standby' modes.
7. headphones are not plugged into the Delta 110, as this
automatically mutes the main outputs.
8. if the digital inputs are being used, the output from the
digital source is switched on.
Loud hissing and crackling from speakers via
digital inputs (possibly with residual audio signal)
1. check the connection between the CD player's digital
output and the Delta 1 lO's digital input.
2. if the digital output of your CD player is switchable,
ensure the switch is in the 'opposition.
12
Delta no digital pre-amplifier
Addendum
The Arcam Delta 110 digital pre-amplifier has been upgraded
'vith the inclusion of a new precision hybrid 18 bit DAC (digital to
lalogue converter).
This new DAC employs both multi-bit and single bit
technology to give outstanding results. To achieve an open and dynamic
midrange and treble, multi-bit technology is used for the upper 10 bits.
The lowers bits use a single bit system for excellent low level resolution.
In addition, the Delta 110 features a clock output for
connecting to the Arcam Delta 170.3 CD transport. By installing the
master clock in the Delta 110 and the slave clock in the Delta 170.3,
jitter is greatly reduced, resulting in sound quality usually attributed to
very expensive high end CD players.
Instructions on how to connect the D110 to the Delta
170.3 follow. All other instructions in the manual are unaffected by the
inclusion of the new DAC.
Connecting to the Arcam Delta 170.3 CD transport
In addition to the digital connection from the Delta 170.3 to
the Delta 110, connect the Delta 110's 'SYNC LOCK' clock output to the
Delta 170.3's clock input using a Toslink type optical cable. This method
will give the very best sound quality. The Delta 170.3 and the Delta 110
will 'synchronise'automatically.
Conversion system
Technical specification (digital inputs)
Upper
Lower
Sampling rates accepted
Dynamic range
Signal to noise ratio (DIN AUDIO)
Harmonic distortion (OdB)
Hybrid 18 bit DAC
10 bits multi-bit
8 bits single-bit
32kHz, 44.1 kHz, 48kHz
108dB
96dB
0.005%
13
Delta HO digital pre-amplifier
Technical specifications
OUTPUTS
Main outputs
Nominal output level 2V
Output impedance 250
Reduction in output level when muted 40dB
Noise (CCIR) volume control at zero -97dBV
Crosstalk (any Input) <70dB at IkHz
Distortion (20Hz- 20kHz, I.OVrms) <0.01%
Maximum output level >8V rms
Minimum recommended load 5kO
Channel balance ± IdB
Tape 1 and tape 2
Nominal output level 300mV
Output impedance 700
Maximum output level 5V rms
Minimum recommended load 5kO
Crosstalk (any input) <-65dB at 1 kHz
Channel balance ± O.ldB
Headphone output
Nominal output level 4V
Output impedance 2000
Recommended load range 320 to 2kO
Maximum output level 8V
Noise (CCIR) volume control at zero —SOdBV
Channel balance ± IdB
INPUTS
Disc - Moving magnet cartridge
Sensitivity 2mV
Noise (CCIR) ref 500mV output —64dB
Input impedance 47kO
Overload margin at I kHz 28dB
Moving coil cartridge
Sensitivity lOOuV
Noise (CCIR) ref 500mV output -50dB
Input impedance 2200
Overload margin at I kHz 28dB
Av, tuner
Sensitivity 200mV
Noise (CCIR) ref 500mVoutput -89dB
Input Impedance 45kO
Tape 1 and tape 2
Sensitivity 200mV
Noise (CCIR) ref 500mV output —89dB
Input impedance 45kO
Digital (coaxial/optical)
Output at MSB 3V
Signal/noise (CCIR) 96dB
Distortion <0.01%
Dynamic range 96dB
Channel balance + 0.2dB
Frequency response (to main outputs|
Disc+0.2,-0.5dB 50Hz to 20kHz
Line (7VV tuner, tape I, tape 2) +0.1, -0.5dB 20Hz to 20kHz
Digital inputs +0.1, -O.SdB 20Hz to 20kHz
14
Delta 110 digital pre-amplifier
GENERAL
Power supply
Normally set to 220/240V AC 50 to 60Hz
May also be wired for 110/120V operation
1OOV version available to special order
Maximum power consumption 20VA
Meets lEC 65 electrical safety requirements standard
Dimensions
Width 430mm
Height 64mm
Depth 270mm
Weight
gross packed 5.2 kg
nett unpacked 3.7 kg
15
Delta no digital pre-amplifier
Guarantee for UK sales
This equipment has been fully tested and a full record of
these tests made before despatch from the factory. Both the
workmanship and the performance of this equipment are (except as set
out below) guaranteed against defects for a period of two years from
the date of purchase provided that it was originally purchased from an
authorised UK dealer under a consumer sale agreement. (The words
'consumer sale'shall be construed in accordance with Section 15 of the
Supply of Goods (Implied Terms) Act 1973.)
The manufacturers can accept no responsibility for defects
arising from accident, misuse, wear and tear, neglect or through
unauthorised adjustment and or repair, neither can they accept
responsibility for damage or loss occurring during transit to or from the
person claiming under this guarantee.
This guarantee covers both labour and parts and is
transferable to subsequent purchasers but the liability of the
manufacturers is limited to the cost of repair or replacement (at the
discretion of the manufacturers) of the defective parts and under no
circumstances extends to consequential loss or damage.
Claims under this guarantee
This equipment should be packed in the original packing and
returned to the dealer from whom it was purchased or, failing this, any
other authorised Arcam dealer. If it is not possible to return the
equipment by hand, then it should be sent carriage prepaid by a
reputable carrier
Should the original packing not be available, replacement
packing can be purchased from the manufacturers. The equipment
should not be sent by post.
Do NOT CONSIGN THE EQUIPMENT TO A&R CAMBRIDGE UNLESS YOU
HAVE FIRST BEEN SPECIFICALLY REQUESTED TO DO SO BY THE MANUFACTURER S
TECHNICAL SERVICE DEPARTMENT DO NOTUNDERANYCIRCUMSTANCESATTEMPTTO
DISASSEMBLE THE EQUIPMENT BEFORE DESPATCH.
If you have difficulty complying with these requirements
please contact the manufacturers at the following address.
A&R Cambridge Limited,
Pembroke Avenue,
Denny Industrial Estate,
Waterbeach,
Cambridge CBS 9PB, England.
Telephone; (0223) 440964
Fax (0223) 863384
In either case you should state clearly your name and
address, the date and place of purchase together with a brief description
of the fault experienced.
In the event of equipment being returned which on test is
found to comply with the published specification the manufacturers
reserve the right to charge a reasonable fee for testing the equipment
and for return carriage.
Enquiries
The manufacturers are happy to answer any queries you may
have regarding the use of.this equipment on the condition that this
enquiry is by letter and a stamped addressed envelope is provided. You
should state clearly the serial number of the unit, the dealer from whom
it was purchased and the date of purchase.
This guarantee in no way varies or removes a purchaser's
STATUTORY RIGHTS.
Part No. SH033A E&OE. AUGUST 19V2 Designed by Carrods Grapbic Design. Cambridge.
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