AMC CVT3030MKII User guide

NORMAL
DIRECTPHONES
BALANCE BASS TREBLE SOURCE CD
TUNER
VIDEO
AUX
VOLUME
iPod / DAC
PHONO
TAP E
H.O.M.E. AUTOMATION SERIES
CVT3030MKIICCVT Integrated Amplifier
POWER
PHONES
CVT3030MKII
INTEGRATED VALVE
AMPLIFIER
IA
Cold Cathode Vacuum Tube design to
give superb sound quality
AMC proprietary design of operate high
voltage FET under Vacuum Tube mode
to give warm, soft and high dynamic
music quality
With motorized remote control on
Volume and Input Selecting

2
The AMC CVT3030MKII has been
designed to give superb sound quality
and represents outstanding value for
money.
The CVT3030MKII is a hybrid mosfet
valve design, capable of giving superb
sound reproduction. The components
are all of the highest quality, but there
are a few simple hints to follow in order
to get the best from your new amplifier.
1) Do not stand any object or other
component on the top. Whilst the
3030MKII is one of the coolest running
Class A valve amps available,
uninterrupted air flow is most important.
2) There are two silent fans in the base
under each pair of EL34 values. Again,
the air space under the amp must not
be restricted in any way. Never stand
the unit on a carpeted surface or
anything soft, or on another component
which generates heat.
3) The amplifier will sound best when it
is "warmed up," which can take 15 - 20
minutes. Avoid operating the
PHONES/NORMAL/DIRECT switch
during this period.
4) The valves should last a very long
time but can be changed easily.
However, as there is always some
voltage present inside, even when the
unit is turned off, we recommend that
this is carried out by your AMC dealer.
It is only a five minute job for an
engineer.
5) We recommend you retain the
original carton and packaging so that it
can be repacked correctly if it ever
becomes necessary to transport the
unit or return for service.
6) After switching off, always let the
amplifier cool down before turning on
again.
Your AMC amplifier is supplied set to
work on your local mains supply voltage.
Check that your local mains supply
voltage agrees with the voltage setting
indicated on the back panel of the
amplifier. If not, please contact your
dealer or national distributor for details
on how to proceed further.
The cores of the mains lead are colored
in accordance with the following code:
Blue -Neutral
Brown -Live
Note: Export units for certain markets
have molded mains plugs fitted as
standard.
As the colors in the mains lead may not
correspond with the colored markings
identifying the terminals in your plug,
proceed as follows:
The wire which is colored blue must be
connected to the terminal which is
marked by the letter N, or colored black
or blue. The wire which is colored brown
must be connected to the terminal which
is marked by the letter L, or colored red
or brown.
If the mains plug is fused, fit a 3amp fuse.
Your AMC amplifier contains fuses which
are designed to protect the amplifier and
prevent the occurrence of a dangerous
fault condition. These should only be
inspected and replaced by a conpetent
engineer using the correct replacement
types.
INSTALLATION
FUSES
INTRODUCTION

NORMAL
DIRECTPHONES
BALANCE BASS TREBLE SOURCE CD
TUNER
VIDEO
AUX
VOLUME
iPod / DAC
PHONO
TAP E
H.O.M.E. AUTOMATION SERIES
CVT3030MKIICCVT Integrated Amplifier
POWER
PHONES
MAINS
230V 50Hz
UNSWITCHED 1A MAX
++
8W4W
SPEAKERS
L
R
230V 50Hz 1A
CCVT Integrated Amplifier CVT3030MKII
L
R
PHONO CDiPod / DAC TUNER VIDEO AUX
LLL
RRR
L
R
TAPE IN PRE OUT
TAPE OUT
1.PHONO GROUND TERMINAL
2. (OPTION: COAXIAL INPUT)
3.iPod/DAC INPUT
4.CD INPUT
5.TUNER INPUT
6.VIDEO INPUT
7.AUX INPUT
8.TAPE INPUT
9.TAPE OUTPUT
10.PRE OUT
11. LOUDSPEAKER TERMINALS
12.AC RECEPTACLE
13.AC OUTLET
PHONO INPUT
1.POWER SWITCH
2.PHONES
3.INFRARAD RECEIVER
4.PHONES/NORMAL/DIRECT
SWITCH
5.BALANCE
6.BASS CONTROL
7.TREBLE CONTROL
8.TAPE MONITOR SWITCH
9.INPUT SELECTION SWITCH
10.VOLUME CONTROL
3
REAR PANEL CONNECTIONS/FRONT PANEL CONTROLS
FRONT PANEL
31
1245678910
3
2
45
REAR PANEL
67 9 10 1213
118

4
A/C OUTLET
INPUTS
CD INPUT
VIDEO
AUXILIARY INPUT
TAPE INPUT
The A/C convenience outlet is fitted so
that other components can be powered
when the AC line cord of your amplifier is
plugged into mains outlet.
You must fit an Standard 3 pin plug,
available from most specialist dealers.
All audio Inputs and tape outputs are via
gold plated RCA type phono connectors.
All the phono sockets on your AMC
amplifier are marked "L" for left and "R"
for right channels, with the left channels
nearer the top of the cabinet. Your
connection leads will have a white or
black plug for left, and a red plug for right.
The CD input is suitable for use with any
CD player. Connect your CD player to the
amplifier using the phono sockets marked
"CD."
The video input is suitable for most VCR's
with an audio output. Connect your VCR
using the phono socket marked "Video."
The Auxiliary input is suitable for use with
any extra source processing a line level
output, perhaps a second tuner or CD
player, or an additional tape or video
recorder wired for replay only.
This input is suitable for use with most
cassette, reel to reel or video recorders.
Connect the "record" leads of your tape
recorder to the phono sockets marked
"Tape out" on the rear of your amplifier
using phono/phono leads.
Connect the "playback"leads of your tape
recorder to the phono sockets marked
"Tape in" on the rear of your amplifier
using phono/phono leads.
Note: The A/C outlet is UNSWITCHED by
the power switch on your amplifier.
The maxinum output current rating
of A/C outlet is 1A.
UNDER NO CIRCUMSTANCES SHOULD
THE CASE OF THE AMPLIFIER BE
OPENED BY ANYONE OTHER THAN A
QUALIFIED ENGINEER, AS DANGEROUS
VOLTAGES ARE PRESENT INSIDE. ANY
UNAUTHORIZED REPAIR MAY INVALIDATE
YOUR WARRANTY.
PHONO INPUT
OPTION: COAXIAL INPUT
iPod / DAC
TUNER INPUT
The input is suitable for either moving
magnet or moving coil cartridges which
can be selected by the switch on Phono
board. Moving magnet cartridge is preset
in CVT3030MKII. Please ask your dealer
to change the MM/MC switch on Phono
board to MC if you use moving coil
cartridge. The plugs on your turntable
lead should be connected to the disc
input sockets on the rear panel of your
amplifier.
The Ground Terminal is for you to
connect ground wire of your turntable in
order to eliminate possible interference
and hum loop for best possible sound
quality.
AMC 24bit/192KHz S/PDIF DAC Module,
MD1108s, can replace PHONO module to
have digital input in CVT3030MKII.
The iPod/DAC input is suitable for use
with any iPod/DAC player. Connect your
iPod/DAC player using the phono socket
marked iPod/DAC.
The tuner input is suitable for use with
most AM/FM tuners. Connect your tuner
to the amplifier using the phono sockets
marked "Tuner."

5
If your tape machine processing DIN
outputs, then DIN/phono leads, or a
DIN/phono adaptor can be used. If you
experience level matching problems
when using DIN connectors, please
consult your tape machine manufacturer.
These RCA jacks provide the preamplifier
outputs which are adjusted by the volume
control. Normally it is connected to the
main-in input of an external power
amplifier.
The loudspeaker output terminals will
accept 4mm(banana)plugs, spade
connectors, pin connectors or bare wires.
The amplifier has speaker outputs that
will match 4 - 8 ohm speakers. Confirm
the impedance of your speakers then
connect as follows:
For 8 ohm speakers, connect the
negative (black) speaker wire to the
"common" negative binding post. Then
connect the positive (red) cable to the 8
ohm red binding post.
For 4 ohm speakers, the negative (black)
connections are the same as the 8 ohm,
but the positive or red connection must be
to the 4 ohm binding post.
Your AMC amplifier is capable of
generating high peak currents, so all
connections must be checked to avoid
inadvertent short circuits, and to ensure a
good clean contact.
PRE OUT
LOUDSPEAKER CONNECTIONS
UNDER NO CIRCUMSTANCES SHOULD
THE OUTPUTS BE SHORTED TOGETHER.

5
POWER SWITCH
Note:
INPUT SELECTION
TAPE MONITOR SWITCH
The amplifier is turned on by depressing
the power switch. The small indicator
above the switch will glow blue. Before
switching on, always set the volume
control to minimum to avoid damage to
your loudspeakers.
Your AMC amplifier will play music
almost immediately after being switched
on. However, in common with other
audiophile products, the internal circuits
take some time to stablize fully, and the
best possible sound quality may not be
obtained until the amplifier has had some
time(possibly an hour or two) to warm up.
The rotary input selector switch selects
which input signal (Phono, iPod/DAC,
CD, Tuner, Video or Aux) is fed to the
power amplifier. The selected signal is
also fed to the "Tape out" sockets for
recording.
The Tape Monitor switch is generally left
in the "Source" position, so that the
program selected by the input switch is
routed to the loudspeakers/headphones.
If the Tape Monitor switch is turned to the
"Tape" position, the signal from the tape
Recorder is routed to the loudspeakers/
Headphones.
If your tape machine is a three head type
suitable for A/B monitoring, then turning
the Tape Monitor switch to the "Tape"
position will allow full off-tape monitoring
of the recorded signal to be carried out
via the loudspeakers/headphones.
The volume control adjusts the overall
loudness level of the sound. It has no
effect on the level of the signals fed to the
TAPE OUT jacks for tape recording. The
Volume control is designed for accurate
tracking of its two channels, so that the
stereo balance will not shift noticeably as
the loudness of the sound is varied.
The tone controls on your AMC amplifier
use low coloration passive circuitry to
ensure the minimum degradation of the
music signal. They are designed to
gradually modify the tonal emphasis of
the music and to compensate for such
problems as difficult room acoustics.
If required, the tone controls can be
completely by-passed with a resultant
increase in sound quality. To do this
simply turn the Phones/Normal/Direct
switch to the "Direct" position.
With the Phones/Normal/Direct switch in
the "Normal"position, the tone controls
will cut their respective frequencies when
turned anti-clockwise and boost them
when turned clockwise. The flattest
response is found when the controls are
in the "12 o'clock position. (DETENTED
POSITION)
The headphone socket will accept any
headphones fitted with a standard
1/4"(6.35mm) stereo jack plug. For
private listening via headphones, the
Phones/Normal/Direct switch should be
set to "Phones," thus cutting the output to
your loudspeakers. In this position the
tone controls remain active. The mute
feature is also useful for situations where
the output from your loudspeakers needs
to be cut momentarily (eg., for a phone
call, etc).
When user is listening music from
Headphones outputs using headphones,
user can switch "Phones / Normal /
Direct" switch to "Direct" for bypassing
Bass & Treble Tone Controls for those
music lovers they like to enjoy more pure
sound quality. Or switch the switch to
"Normal" to activate Bass & Treble Tone
VOLUME CONTROL
TONE CONTROLS
PHONES
PHONES/NORMAL/DIRECT
FRONT PANEL CONTROLS

Controls for those music lovers like to
equalize sound field to fit each rooms
accoustic characteristics. When users
switch the switch to "Direct" & "Normal"
positions, there are music from Speaker
terminals simultaneously. When users
switch the switch to "Phones", there will
be no music from Speaker terminals and
Bass & Treble Tone Controls are
activated.
For "Phones / Normal / Direct" switch,
please don't switch it until 5 minutes after
turning CVT3030MKII on or you will hear
some switching pop sound as
CVT3030MKII has been designed with
very high voltage and initially will require
around 5 minutes for building up the high
voltages. As adding extra circuits would
degrade the sound quality due to longer
time constant and AMC developing
engineers decided to be without them.
So, AMC would like to suggest users to
wait for 5 minutes before starting to
switch the switch. Then there will be
without the pop sound and sound quality
will be better.
TAPE RECORDING
PLAYBACK
CHECK LIST
No power and LED not illuminated
Power on and LED illuminated but no
output
Power on and LED illuminated but
output from one speaker only
Loud hum heard through
loudspeakers when disc is selected
All sources, Phono, iPod/DAC, CD,
Tuner, Video and Aux can be recorded via
the tape connections. To record an input,
select the required source and set your
recorder to the record mode.
To record from one tape recorder to
another, the playback recorder should be
plugged into the Aux socket, and the
recording machine into the Tape socket.
The input selector switch should be set to
"Aux". A recording can now be made in
the normal way.
Set the Tape Monitor switch to the "Tape"
position and set your recorder into the
playback mode.
Should you have any difficulty in
operating your amplifier, switch off and
check the following before suspecting that
a fault has developed:
1. Check that all mains supplies,
connections and fuses are good and that
the power is switched on.
1. Check that the amplifier is connected
to the desired input and that the correct
input on the amplifier is selected.
2. Check that the loudspeakers are
connected correctly to the power
amplifier.
3. Check that the Phones/Normal/Direct
switch is not set to "Phones."
4. Check that the Tape Monitor switch is
not set to "Tape."
1.Check that the left and right channels of
the selected source are connected
correctly and that the input wiring is not
faulty. If any doubt, contact your dealer.
2.Check that the Balance control is not
set to Right or Left channel.
1. Check that the ground lead from the
turntable (if fitted) is connected firmly to
the ground terminal on the rear of the
amplifier.
2. Check that the amplifier is correctly
earthed via the mains lead.
3. Check that other transformers in the
vicinity are not radiating into your
amplifier.
6

ONOFF
PHONO CD TUNER AUX
iPod/DAC VIDEO
1
4
7
2
5
8
0
3
6
9
VOLUME
CD
CD USB 24192
PLAY/PAUSE
STOP
TRK/TITLE
DIRECT
AM
FM
AUTO
MANUAL
PRESET
DAB+
SELECT
INFO
ENTER/M
RC-S8
1
2
1
1.INPUT SOURCES 2.VOLUME CONTROL
These buttons select any one of the Six
sources that are connected to the
inputs of the CVT3030MKII (PHONO,
iPod/DAC, CD, TUNER, VIDEO, AUX).
: VOLUME UP
: VOLUME DOWN
7

8
SPECIFICATIONS
Weltronics Corp. reserved the right to improve its products at any time. Specifications
are subject to change without notice.
Rated Power into 8/4 ohms........................................................................30W
With both channels driven
Rated T.H.D.20Hz-20KHz............................
1KHz clipping power into 8/4 ohms...........................................................36W
High level inputs.........................................................................................34mV/180mV
Phono MM input......................................................................................0.4mV/2.2mV
High level inputs...................................................................................20K ohms/100pF
Phono input ......................................................................................47K ohms/100pF
Tone bypass 20Hz-20KHz.................................................................................+/-0.5dB
Normal 20Hz-20KHz..........................................................................................+/-1.0dB
High level inputs -3dB..................................................................................10Hz/80KHz
High level inputs "A" WTD.......................................................................................80dB
Phono inputs"A" WTD............................................................................................79dB
Separation 20Hz-20KHz ......................................................................................>50dB
Bass at 50Hz......................................................................................................+/-8dB
Treble at 10KHz................................................................................................+/-7dB
Overall feedback................................................................................................14dB
Dimensions (W x H x D)......................................................................430x112x288 mm
Net weight............................................................................................................14 Kgs
Shipping weight ..................................................................................................15 Kgs
.........................................................1.0%
Phono MC input......................................................................................0.04mV/0.2mV
Input Sensitivity for 1W/Rated Power into 8 ohms:
Input impedance:
Frequency response:
Signal to noise ratio(ref. 1W/8 ohms):
Tone control range:
PHYSICAL:

All the safety and operating instructions should be read
before the appliance is operated.
The safety and operating instructions should be retained for
future reference.
All warnings on the appliance and in the operating instructions
should be adhered to.
All operating and use instructions should be followed.
The appliance should not be used near water - for example,
near a bathtub, washbowl, kitchen sink, laundry tub, in a wet
basement, or near a swimming pool, etc.
The appliance should be used only with a cart or stand that is
recommended by the manufacturer.
An appliance and cart combination should be
moved with care. Quick stops, excessive force,
and uneven surfaces may cause the appliance
and cart combination to overturn.
This equipment is not designed for use mounted on a wall or a
ceiling.
The appliance should be situated so that its location or position
does not interfere with its proper ventilation. For example, the
appliance should not be situated on a bed, sofa, rug, or similar
surface that may block the ventilation openings, or placed in a
built-in installation, such as bookcase or cabinet that may
impede the flow of air through the ventilation openings.
The appliance should be situated away from heat sources
such as radiators, heat registers, stoves, or other appliances
(including amplifiers) that produce heat.
The appliance should be connected to a power supply only of
the type described in the operating instructions or as marked
on the appliance.
Power-supply cords should be routed so that they are not likely
to be walked on or pinched by items placed upon or against
them, paying particular attention to cords at plugs,
convenience receptacles, and the point where they exit from
the appliance
The appliance should be cleaned only as recommended by
the manufacturer.
The power cord of the appliance should be unplugged from the
outlet when left unused for a long period of time.
Care should be taken so that objects do not fall and liquids are
not spilled into the enclosure through openings.
The user should not attempt to service the appliance beyond
that described in the operating instructions. All other servicing
should be referred to qualified service personnel.
The appliance should be serviced by qualified service
personnel when:
a) The power-supply cord or the plug has been damaged; or
b) Objects have fallen, or liquid has been spilled into the
appliance; or
c) The appliance has been exposed to rain; or
d) The appliance does not appear to operate normally or
exhibits a marked change in performance; or
e) The appliance has been dropped, or the enclosure is
damaged.
(APPLIES TO TUNERAND RECEIVERS ONLY)
An outdoor antenna should be located away from power lines.
(APPLIES TO TUNERAND RECEIVERS ONLY)
If an outside antenna is connected to the receiver, be sure the
antenna system is grounded so as to provide some protection
against voltage surges and built up static charges.
Section 810 of the National Electrical Code,ANSI/NFPA No.
70-1984, provides information with respect to proper
grounding of the mast and supporting structure, grounding of
the lead-in wire to an antenna discharge unit, size of grounding
conductors, location of antenna-discharge unit, connection to
grounding electrodes, and requirements for the grounding
electrode. See Figure.
a) Use No. 10 AWG (5.3 mm ) copper, No. 8 AWG (8.4 mm )
aluminum, No. 17 AWG (1.0 mm ) copper-clad steel or
bronze wire, or larger, as a ground wire.
b) Secure antenna lead-in and ground wires to house with
stand-off insulators spaced from 4-6 feet (1.22-1.83 m)
apart.
c) Mount antenna discharge unit as close as possible to where
lead-in enters house.
d) Use jumper wire not smaller than No.6 AWG (13.3 mm )
copper, or the equivalent, when a separate antenna-
grounding electrode is used. See NEC Section 810-21(j).
1. READ INSTRUCTIONS
2. RETAIN INSTRUCTIONS
3. HEED WARNINGS
4. FOLLOW INSTRUCTIONS
5. WATER AND MOISTURE
6. CARTS AND STANDS
6A.
7. WALL OR CEILING MOUNTING
8. VENTILATION
9. HEAT
10. POWER SOURCES
11. POWER-CORD PROTECTION
12. CLEANING
13. NON USE PERIODS
14. OBJECT AND LIQUID ENTRY
15. SERVICING
16. DAMAGE REQUIRING SERVICE
17. POWER LINES
18. OUTDOOR ANTENNA GROUNDING
22
2
2
SAFETY INSTRUCTION
S3125A
PORTABLE CART WARNING
Antenna Lead
In Wire
Ground
Clamp
Electric
Service
Equipment
Power Service Grounding
Electrode System
(NEC Art 250 Part H)
Ground Clamps
Antenna
Discharge
Unit (NEC
Section 810.20)
Grounding Conductors
(NEC Section 810.21)
Antenna Grounding According to
the National Electrical Code
National Electrical Code
Available from Library, book
stores, or National Fire Protection
Association (Batterymarch Park,
Quincy. MA 02269).
AMC 21-4153

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