Page 1
The AVI Laboratory Series
DAB Tuner
Owners Instruction Manual
For the use, care and maintenance of your
tuner
AVI Ltd
Suite 7 Lightpill Mill
Bath Road Trading Estate
Stroud
Glos. GL5 3QF
Tel: 01453 752656
Fax: 01453 752777
www.avihifi.com
Page 2
Introduction
Thank you for purchasing an AVI Laboratory series DAB Tuner. As the name
implies, it is a precision instrument, meticulously hand built and tested and, given
the right circumstances, will produce the best sound quality that current
technology will allow.
We recommend that before you use your new tuner, you carefully read the
instruction manual. If you are familiar with the way the machine works before
you start, you are much less likely to encounter problems.
Installation
The Laboratory Series Integrated amplifier has been designed so that your tuner
can be put on top of it provided it is well ventilated. In cupboards where air
cannot circulate it would be best to put them side by side or, if you are using
another make of power amplifier that gets warm or even hot in use, then do not
put the tuner on it, as high temperatures can damage it.
Use good quality, screened coaxial phono-to-phono leads, avoiding ones that lock
and always makes sure that force applied to plug in or remove leads is directly in
line with the sockets. This is to minimise the risk of damage.
AVI products are extremely reliable but we do occasionally get units back for
repair because the phono sockets have been damaged. This is because many
people believe that cables can be used to fine tune the system or overcome some
problem with sound quality. Usually their problems are quite severe and cable will
not help. The biggest differences are caused by room acoustics and to a lesser
extent, loudspeakers. If you are in trouble, we may well be able to help so please
get in touch.
As a general rule it is not a good idea to remove and replace cables whilst the
system is switched on. The pops, clicks and hums that can occur may damage
loudspeakers especially if you amplifier is quite powerful.
Instructions for use
In the majority of cases your DAB tuner requires a high quality external aerial
and these can be obtained from and installed by a local specialist. We do not
recommend internal ones.
The aerial socket, known as an F connector, forms part of the receiver so it is
important not to damage it because if you do, the repair will be extremely
expensive. Your local installer will provide the correct cable and connector. Use
nothing else as forcing wires into the socket will break it.
When the tuner is switched on for the first time it will be out of standby and need
to be tuned. On the left rear panel (looking from the front of the tuner) there are
two small buttons labelled Tune and Reset.
The tune button has two functions, if it is pressed and released it will scan band
III (UK frequencies) and store all the available stations. If it is pressed and held
for five seconds it will scan band III (UK) and L Band (some Continental) and
memorise all available stations. All you need to do is chose a suitable option and
you will have all the stations you can get. The tuning knob rotates in a series of
Page 3
clicks, each one resulting in a station being indicated on the display. Pressing the
tuning knob inwards will select it.
There are six memory-preset buttons on the front panel and if you press these
and hold them down for a few seconds, they will memorise the station shown on
the display.
Pressing the Reset button will erase all station and preset memories and enable
you to start again at, for instance, a new location.
The Info Button
Pressing the Info button will show:
The station selected together with scrolling information.
The station selected and basic, non-scrolling information.
The station selected and source identification.
The station selected together with signal quality
(good quality shown)
The station selected and the time and date
Page 4
From the handset
The Audio Zapper supplied with your Tuner has been pre-programmed:
TUN Button for tuner. It will put the unit in and out of standby and cycle up and
down through the presets. Do not use the TUN button for anything else
because you will lose the tuner control functions.
MD Button for Integrated amplifier and Preamplifier.
CD Button for CD player.
Your AVI DAB tuner can also be controlled by any learning handset, the codes are
those of a Philips VCR and will provide the same functions as the Zapper.
Rear Panel connections and controls
In normal use your AVI Laboratory DAB tuner can be left in standby, although
there is no advantage in doing so. We recommend that it be turned off if it is not
going to be used for some time. The power switch is to the rear right hand side of
the unit.
In addition to the output phonos your Tuner also has both types of digital output,
Toslink optical and a phono socket for an electrical output.
Always switch everything off before removing or replacing connectors.
Safety Information
If the mains fuse blows make sure that the replacement is the same and as
specified below:
Fuse rating:- 110V/120V T500mAL
220V/230V T250mAL
Operate on AC mains only
The unit must be earthed
Always disconnect mains supply before making connections
If the mains lead is damaged, replace it with a good quality one of the same
specifications or better.
If you suspect that liquid has been spilled onto the unit, do not switch it on or
switch off immediately and return it for service.
Avoid installing anywhere hot, e.g. direct sunlight, radiators or hot amplifiers.
Avoid high levels of humidity.
Avoid dusty environments.
Page 5
There are no user serviceable components inside the unit.
Cleaning
Use a soft damp cloth
Do not use cleaners or solvents of any kind
Do not use an abrasive cloth
Disconnect mains whilst cleaning
Specifications
Power Consumption …………………………………………………………30VA max
DAC Specification
Complete high performance 24-bit 48/96/193kHz stereo digital-to-analogue
conversion system incorporating a digital interpolation filter followed by an oversampled multi-bit delta-sigma modulator that drives the dynamic-elementmatching selection logic. This multi-bit architecture features significantly lower
out-of-band noise and jitter sensitivity than traditional 1-bit designs and
guarantees low noise and distortion at all signal levels.
Dynamic range ……………………………………………………………….. 120dB (A-weighted)
Total Harmonic distortion ………………………………………………. 0.001%
Frequency response ……………………………………………………….. 10Hz to 20kHz +or-
0.015dB
Output level ……………………………………………………………………. 2V rms
Output impedance …………………………………………………………. 47 Ohms
Guarantee Registration
Your AVI Laboratory DAB tuner will be guaranteed free from defective parts and
labour costs for two years from the date of purchase. The cost of returning the
unit to us will be chargeable.
Should your Tuner require repair or service, please return it to the address below
in its original packaging. Otherwise new cartons will be supplied and a charge
made.
Please enclose a short description of the fault and a return address where
someone will be present to sign for the unit on its return. Do not send handsets,
mains leads or instruction manuals. A telephone call, fax or email warning of its
return will enable us to pre-book service time, or advise of non delivery.
This guarantee does not affect your statutory rights.
Page 6
Return Address:-
AVI Ltd
Suite 7 Lightpill Mill
Bath Rd. Trading Estate
Stroud
Glos. GL5 3QF
Tel: 01453 752656
Fax: 01453 752777
[email protected]
www.avihifi.com
Loading...