Classe DELTA MONO Owner's Manual
Owner’s Manual
Delta MONO
Monaural Amplifier
Contents
Welcome to the Classé family ..........................................................................3
Unpacking and Placement ............................................................................... 4
Special Design Features ...................................................................................6
Front Panel .......................................................................................................7
Rear Panel ........................................................................................................9
Installation .....................................................................................................15
CAN-Bus ........................................................................................................ 17
Care and Maintenance ................................................................................... 20
Troubleshooting .............................................................................................21
Specifications ................................................................................................. 23
Dimensions .................................................................................................... 25
2
Welcome to the Classé family
Congratulations on your purchase of a Classé amplier. It is the result of many
years of design experience, and we are sure that you will enjoy it for many years
to come.
We value our relationship with our customers. Please allow us to stay in touch
with you by registering now. Doing so will enable us to let you know about any
possible future upgrades or updates that might become available for your Classé
component.
You can register online at https://classeaudio.com.
Please take a few moments now to register your new
Classé amplifier and record your serial number for future
reference
a word about installation Every eort has been made to make the Classé Delta MONO simple and
straightforward to install and use.
It may be placed on a shelf, in a cabinet or on the oor near the speaker(s). As
with all ampliers, the Delta MONO generates some heat and care should be
taken to allow adequate ventilation.
e size and shape of your room, its acoustics, and the associated equipment
you have chosen to use with your amplier all inuence the performance of your
system.
For this reason, we strongly encourage you to have your
system installed and calibrated by your dealer, whose
experience, training, and specialized equipment can
make a profound difference in the final performance of
the system.
3
Unpacking and Placement
unpacking your amplifier Carefully unpack your power amplier according to the supplied instructions,
and remove all accessories from the carton. Please take care when lifting the
amplier, as it is extremely heavy with weight somewhat concentrated near the
front right corner.
Important! Keep all packing materials for future transport of your
Classé amplifier. Shipping your new component in
anything other than its purpose-designed packing material
may result in damage that is not covered by the warranty.
Important! Remove the protective film from the meter lens slowly to
reduce the chance that static will build up inside, causing
a deflection of the meter’s pointer. If this happens, the
pointer may settle to its nominal zero position over a
short time on its own, but an anti-static wipe has been
included in the accessories pack which can be used to
discharge the static. Gently swiping it across the lens
surface should remove any built up static charge from the
meter assembly.
placement Many installations will utilize an equipment rack, although a shelf, a cabinet or
the oor near the speaker(s) are acceptable alternatives. In any case, take care to
position it well away from source components and preamp/processors, which
may be sensitive to the amplier’s electromagnetic elds.
Note that adequate clearance for the AC cord and connecting cables
must be left behind the amplier. We suggest leaving six inches (15 cm)
of free space behind your power amplier to allow all cables sucient
room to bend without crimping or undue strain.
unit’s temperature An important note about letting the unit come to room temperature:
e amplier has built-in circuitry that will prevent it from being
powered on if it is too cold. If the amp has been delivered on a cold
day it should be allowed to acclimate to room temperature before being
plugged in.
ventilation Your Classé power amplier generates a certain amount of heat in the course of
normal operation. Avoid placement on soft surfaces that would restrict airow
around the unit (such as plush carpeting). Leave at least two inches (5 cm) of
clearance in front and above the amplier and six inches (15 cm) behind the
amplier to allow the active cooling system to function properly. If installing the
amplier in a cabinet, make sure that an opening at least 4” x 4” (10 cm x 10
cm) is provided opposite the fan exhaust area on the amplier rear panel.
4
custom installations Drawings are included in this manual to facilitate special installations and
custom cabinetry (see the section Dimensions). Contact your Classé dealer for
more information.
serial number e serial number for your power amplier is found on the rear of the unit.
Please note and record this number on the page entitled Important Safety
Instructions for your future reference.
operating voltage e operating voltage of your Delta MONO is indicated on the rear of the unit.
Do NOT connect the amplier to AC mains power of dierent line voltage.
Warning: There are no user-serviceable parts within the unit. Please
refer any problems to an authorized Classé service center.
e amplier can easily be powered by a normal 15 or 20-amp AC mains line.
If other devices are also powered from the same AC line, their additional power
consumption should be taken into account.
warm up/break-in period Your new Classé power amplier will deliver outstanding performance
immediately. However, you should expect to hear it improve somewhat as
it reaches its normal operating temperatures and its various components
“break-in.” It has been our experience that the greatest changes occur within the
rst 72 hours, as the amplier reaches thermal equilibrium and the capacitors
fully form. After this initial break-in period, the performance of your new
amplier should remain quite consistent for years to come.
please read this manual… Please take a few minutes to review this manual, and to familiarize yourself with
your new amplier. We understand that you are anxious to plug everything in
and get started. However, reading this manual and following the advice it gives
will ensure that you get all the benets you deserve from having purchased such
a ne piece of equipment.
5
Special Design Features
highly refined
circuit design
extensive listening tests Excellent measured performance is to be expected in world-class products, and
extraordinary longevity e Classé Design team has accumulated vast experience in what works well over
is Classé amplier utilizes our latest technology, implemented with the
highest quality parts. A combination of careful part selection and circuit layout
combined with an extended class A operating area enables superior performance
under all conditions. It delivers enormous power into low-impedance loads and
achieves extremely low distortion throughout the audio band, most notably
maintaining its low-distortion prole even at high frequencies. e result is
an engaging sound without listener fatigue that will lead to countless hours of
listening enjoyment.
Classé products deliver that performance. However, experience has shown that
technical excellence alone is insucient to guarantee subjectively musical results.
For this reason, all Classé products are laboriously ne-tuned during the
development process by carefully controlled listening tests. Our ears are still
some of the nest test instruments available, and nicely complement even the
best engineering test equipment. We rely on careful listening tests, which we
view as a necessary complement to the solid engineering you should rightly
expect from Classé.
the long term.
By using only the highest quality parts to begin with, and then using them in
an informed way as a result of both accelerated aging tests and actual longterm experience, we are able to design and manufacture products which we are
condent will stand the test of time.
We are condent that your new Classé amplier will give you many years of
trouble-free reliability and musical enjoyment, just as previous Classé products
have given their owners.
robust protection Finally, your new Classé amplier incorporates a variety of protection circuits, all
designed to protect both the amplier and your loudspeakers against dangerous
fault conditions. Signicantly, these protection circuits do not intrude upon
or limit the normal performance of the amplier; rather, they simply put the
amplier into protection mode when confronted with abnormal conditions.
ese conditions include:
• output overload and short circuit protection
• DC oset
• excessive operating temperatures
Some conditions, such as DC oset, may be corrected up to a point
automatically in the amplier while others will result in the amplier switching
itself o. In such a case, the Standby LED status indicator will blink red until
the fault can be righted and the amplier is reset by pressing and holding the
standby button for at least ve seconds.
6
1 3 2
Front Panel
1 Standby/ON Button & Status Indicator LED
e front panel Standby button will toggle the amplier between
operate, its fully operational state, and a standby mode. (See also Wake on
Network).
e current state of the amplier is indicated by the LED status indicator
in the Standby button. e state of this LED indicates the following:
• on (red) = standby
• slow ashing (white) = initialization
• on (white) = operate
• ashing (red) = protection circuit(s) engaged
• ashing (green) = CAN identify mode
• ashing (orange) = error during update
When in standby, the amplier’s gain stages are powered down. Only a
small power supply and control circuit remain on, consuming relatively
little power. Fortunately, since the output stages by their nature conduct a
great deal of current, they warm up and sound their best very quickly.
If you are not going to use the amplier for an extended period of time, we
suggest you disconnect it from the AC mains.
Also, it is a good practice to physically disconnect any and all valuable
electronics from the AC mains during electrical storms, as a lightning
strike anywhere near your home can put a tremendous surge on the AC
mains that can easily damage any piece of electronics, no matter how well
designed and protected. e best protection in the case of severe electrical
storms is to simply remove the electronics from any connection with the
power grid.
7
Caution! If you see the Standby LED indicator blinking red, please
check that all external connections are cleanly made
and secure. If no fault is immediately obvious, try to
reset the amplifier by pressing and holding the standby
button. If the unit does not reset or continues to enter
protection mode, please call your authorized Classé
dealer for assistance.
™
2 ICTunnel
Air Intake
e Intelligent Cooling Tunnel removes heat from the amplier by pulling
cool air through the intake on the front panel. To ensure the proper
operation of the cooling system, be careful to keep the area around the air
intake on the front panel free of obstructions.
3 Output VU Meter
e output meter shows output power in Watts into an 8 ohm load and
provides a good relative indication of output in dB. A good rule of thumb
is that when the pointer is below/left of vertical the amplier is operating
in class A.
e backlight of the VU meter may be adjusted to three dierent
brightness levels or turned o. To adjust the brightness level, with the
amplier in standby, press and hold the standby button for approximately
5 seconds. e backlight will begin cycling through its brightness levels.
When the desired brightness is reached, release the button.
8
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