Amate Audio Xamp3K Manuel utilisateur
User’s manual
Manual de usuario
Xamp3K
Power amplifier for bi-amplified Xcellence Speaker Systems
Amplificador de potencia para Sistemas de Altavoces Xcellence bi-amplificados
May 2016
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ENGLISH
Safety Instructions
1. All safety instructions must be read before using this device.
2. The exclamation mark in the triangle indicates internal components which if
replaced can affect safety.
3. The lightning symbol within the triangle indicates the presence of dangerous
uninsulated voltages.
4. This device must not be exposed to rain or humidity.
5. Only clean the device with a dry cloth.
6. Do not situate the equipment where its ventilation system might be interfered with.
7. Do not install the device near heat sources such as radiators, heaters or other
heat-emitting elements.
8. The equipment must be repaired by qualified technical service personnel when:
A. The mains supply cable is damaged, or
B. Any object or liquid has damaged the device; or
C. The equipment does not function normally or correctly; or
D. The equipment has been exposed to the rain; or
E. The chassis is damaged
9. Disconnect the device in the case of electric storms or during long periods of
disuse.
10. The equipment shall not be exposed to dripping or splashing and no objects filled
with liquids, such as vases, shall be placed on the device.
11. Only use manufacturer recommended accessories.
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1 INTRODUCTION
Amate Audio would like to thank you for the trust placed in our Xamp3K. We have
incorporated the highest technology into this product with the conviction that will give
you an optimum performance and operation, however adverse the working
conditions to which you may submit it. In order to achieve the best performance
and correct operation, it is important that you read the instruction manual carefully
before making any connections. In addition, we recommend that you read the
Warranty Certificate enclosed with this Equipment in case you may observe any
anomaly prior to or immediately after start up, and how to proceed on each case.
The Xamp3K is an amplifier with a dedicated design to drive two-way bi-amplified
speaker systems of the Xcellence series.
A 2400 W@4 Ohms Class H channel for low frequency plus a 600 W@4 Ohms
channel for high frequency offer flexible, reliable and powerful option for most
loudspeakers combinations.
Together with our DSP608 loudspeaker management controller, they are the perfect
match to drive your loudspeakers in applications where active solutions cannot be
deployed.
Shipped contents:
- Xamp3K unit
- AC power cord
- User Manual
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2 MAIN FEATURES
The Xamp3K amplifier is modular in design. The rigid metal chassis provides easy
access to the electronic circuits. Fully independent safety circuits protect the
amplifier in the event of a short circuit of the loudspeaker output, abnormal increases
in temperature and/or excessive amplifier consumption.
The Xamp3K amplifier offers high dynamic performance with moderate average
energy consumption, as well as good damping factor, which results in clean
response to transients and high quality playback.
The power modules are integrated in a tunnel-shaped own developed heat sink,
which combines high dissipation power with an excellent thermal inertia, thanks to
the high extraction effectiveness of the incorporated fans.
Other features include:
- Separate input XLR, electronically balanced for each way (Low & High)
- Volume control, limiter and indicators VU for each way (channel)
- Output for both ways via one single 4-pole Speakon, with an additional LINK
Speakon (PARALLEL). Independent binding posts may be also used.
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3 MAIN CONTROLS AND CONNECTIONS
3.1 The front panel
Fig. 1. Front panel view
A) Power Switch – On-Off switch with Led
B) Volume Controls – Potentiometers to independently control the output level for
each way.
C) Cooling outs – Forced air output for temperature regulation.
D) VU-Meters – Independent output signal indicators, with Leds for different relative
levels: -36dB, -24dB & -12dB.
E) Limiter – Led indicating the operation start of the anti-clipping or limiter systems.
F) Protection – Led indicating the operation of any of the protection system of one
or both channels. At power up normally it will turn ON momentarily. If it does not
turn OFF, indicates a problem of malfunction of the amplifier.
G) Panel screws – Detach (no tools needed) to access the internal panel
3.2 The internal front panel
Detach the front panel using the two screws (G) to access this panel.
Fig. 2. Internal front panel
H) Limiter adjust – Easy adjustment for the limiter threshold of each output. For
more information see Section “Limiter Adjustment”.
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3.3 The rear panel
Fig. 3. Rear panel view
A) IEC power connector /Breaker – Input power supply 230VAC with overcurrent
protection of 10 A RMS.
B) XLR Input (LOW) – Electronically balanced for channel of 2400W @ 4Ohm.
C) XLR Input (HIGH) – Electronically balanced for channel of 600W @ 4Ohm.
D) XLR Link (Out LOW) – Signal link of the LOW channel (for another amplifier).
E) XLR Link (Out HIGH) – Signal link of the HIGH channel (for another amplifier).
F) Speakon Output – Loudspeaker output connection via 4-pole (bi-amp) Speakon.
Recommended output for connecting the amplifier with the acoustic system.
G) Speakon Link – Link of the loudspeaker output connection 4-pole Speakon. This
connector is connected in parallel mode with the Speakon Output.
H) Binding Posts – Separate outputs of each channel. This connector is connected
in parallel with the Speakon Output and they are recommended when requiring
separate ways or a wire section greater that the Speakon Output.
I) FANS – Forced ventilation turbines. Do not cover.
4 INSTALLATION
4.1 Connection to the mains
First, it is essential to ensure that the main voltage corresponds to the apparatus
voltage. It is not advisable to connect and disconnect the mains wire without first
making sure that the switch is in its OFF position. The amplifier is equipped with an
Inrush current limiter circuit, which avoids current excess when powering up. In
addition to that, a breaker switch located close to the IEC socket protects the
amplifier when the average current consumption is out of the specified range.
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AC 220/240V – 50/60Hz
Average current draw: 3 A Musical Program
5 A Heavy Duty
WARNING: the connection to any other voltage different from the one
specified can damage the amplifier immediately.
4.2 Connection of the loudspeakers
The loudspeaker system should be connected to the Speakon or binding posts
connectors ensuring that the polarity is correct. It is very important to use a cable
fitting to the power of the amplifier in order to maintain the high damping factor these
units provide.
As a general guideline, we offer a table showing the recommended cable section for
different cable length, in order to keep power and damping factor loss in acceptable
values.
Max. recommended cable length
Cable Section
8 Ohm Load
4 Ohm Load
2.5mm2 (AWG14)
20 m
10 m
4mm2 (AWG12)
30 m
15 m
6mm2 (AWG10)
40 m
20 m
8 mm2 (AWG 8)
50 m
25 m
Table 1. Maximum recommended cable length
The following speaker outputs are available:
Fig. 4. Available loudspeaker connectors on the rear panel
Speakon sockets: Each pole can fit a maximum wire section of 4mm2 (12AWG).
• OUT Speakon: Loudspeaker output connection for both channels. The
Speakon connector (not included) has 4 terminal poles labelled as +1(+LOW),
-1(-LOW), +2 (+HIGH), and -2(-HIGH).
• LINK Speakon: This connector is connected in parallel with the Speakon
OUT.
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Binding Posts: They accept direct cable connection up to 8mm2 section (8AWG).
The Binding Posts are marked with Red for the Positive Pole, and Black for the
Negative Pole. Separate outputs are available for each channel: 2 binding Post
(RED/BLACK) for LOW and 2 binding Post (RED/BLACK) for HIGH. This connector
is connected in parallel mode with the Speakon OUT.
The outputs are configured as following:
Output
LOW
HIGH
OUT
Positive
+1
+2
Negative
-1
-2
Binding
Post
Positive
LOW
(RED)
HIGH
(RED)
Negative
LOW
(BLACK)
HIGH
(BLACK)
LINK
Positive
+1
+2
Negative
-1
-2
Table 2. Configuration of loudspeaker connections
WARNING: high
risk
of malfunction or major damag
e!
As specified in the previous point, there is the possibility to use
simultaneously the different outputs, such as OUT SPEAKON, LINK
SPEAKON and the Binding Posts. Please make sure to check that the
total load connected to each channel is not below 4 Ohm, since all outputs are
connected in parallel.
Be extremely careful when performing the connections, as a short-circuit between
any of the positive pins (+1, +2) can damage the amplifier or even cause the
destruction of one or both power modules.
4.3 Connection of the inputs/auxiliary outputs
The inputs (BALANCED INPUTS) enable connection through XLR-3 connectors. The
amplifier incorporates balanced inputs for a high rejection of noise generated by long
signal cables, proximity to electric wires or sources causing them.
BALANCED Inputs/auxiliary outputs:
1. Shield
2. (+) Live
3. (–) Return
UNBALANCED Inputs/auxiliary outputs:
1. Not connected (* See Note)
2. (+) Live
3. Ground
Input
Link
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(*) NOTE: This amplifier follows the ground interconnection specification defined by
AES48-2005 standard of the Audio Engineering Society, on grounding and EMC
practices for audio equipment containing active circuitry. For that reason, when a
source with unbalanced outputs should be connected, it is recommended not
to use Pin1 of the XLR, and never connect it to Pin3. If a shielded cable is
available, the shield may be connected to Pin1 of the XLR to get some shielding,
leaving the other end unconnected. Pin1 connection is only advised if the equipment
with the unbalanced output has a dedicated connection for the shield, separate from
the audio signal ground reference.
Before powering up the unit, make sure that the input and output XLR cables are in
good state and following the above described pinning diagram, as defined by the
AES14 standard.
When connecting the XLR, please decrease the amplifier volume to the minimum
with front volume knobs until you configure the signal processing. Loudspeakers may
be damaged due to a wrong setup. It is advisable to first raise the volume of the high
frequency channels: in case they are connected to low frequency drivers by mistake,
they cannot be damaged. Otherwise, high frequency speakers may be damaged
because of trying to reproduce low frequencies. Then raise gradually the volume and
check that the system is properly connected. If so, proceed to increase the volumes
to its maximum position.
5 OPERATING THE AMPLIFIER
Along with this equipment it is necessary to use an external processing unit, for
example the DSP608, which provides to each channel the required processing to
control systems requiring independent settings for low and high (Bi-amplified).
This amplifier is designed to drive loads between 4 and 16 Ohms.
5.1 Start-up
Once the mains, loudspeaker and sound sources (input) connections have been
made correctly, start up the pre-amp sources and then press the ON/OFF switch.
Turn the volume controls clockwise to obtain the maximum gain. The amplifier is
equipped with a Soft Start circuit, which assures a gentle, pop free start up, avoiding
stress to the loudspeakers.
In order to obtain the maximum dynamic range from the amplifier, it is recommended
to set always the gain controls to the maximum, and control the output power by
regulating the signal level at the amplifier’s input using the processor gain control (in
this condition of the gain controls to the maximum, the amplification is fixed at 32dB
per channel).
5.2 Clip/Limiter
This circuit prevents the amplifier from delivering distortion at the loudspeaker
outputs. Its action is practically inaudible and protects the loudspeaker voice coils.
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A LED on the front panel indicates the action of the anti-clipping limiter of each
channel. If the clip LED is lit intermittently, this may be interpreted as correct, but it
means that the amplifier is reaching its maximum power at this point.
Fig. 5. Limiter leds location on the front panel
WARNING: Make sure the LED LIMITER is not alight permanently!
No extra power is obtained in this way, losing dynamics and sound
quality.
5.3 Limiter adjustment
The amplifiers Xamp3K feature a limiter adjustment, in which the user, with an easy
adjust, can limit the output power of each output independently. Along with the DSP
input level controls and/or an external limiter, the use of this adjustment can be very
useful to protect the system in case of connection errors in XLR input or outputs
It is an easy access adjustment and it is located behind the front panel. The front
panel is fixed with two M4 screws with knurled head that can be loosen with the
fingertips. After removing the front panel you will find two LIMITER sections, one per
channel, they can be adjusted with a small flat-tip screwdriver.
Fig. 6. Limiter adjust potentiomenters on the internal front panel
The factory setting for this parameter is set to fully clockwise; this way the device
delivers its maximum power with minimum distortion thanks to its anti-clipping
system.
Each channel has an independent limiter adjustment; see the attached table of the
delivered output depending of the limiter adjustment:
Table des matières
Langues :
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