Amplifier Amplifier Series XV Series XV

Amplifier
Series XV
Installation &
Operations Manual
 Bittner-Audio 2002
BITTNER
Installation & Operations Manual
Power Amplifier Series XV Installation & Operations Manual
Bittner - Audio
May 2002
© 2002 Bittner-Audio. All Rights Reserved.
Bittner-Audio reserves specification privileges Information in this manual is subject to change without notice or obligation.
FULL RANGE OF BITTNER AMPLIFIERS:
BASIC
XB
XR
XV
8X
THE BASIC SERIES OF BITTNER AMPLIFIERS, BASED ON THE
TECHNOLOGY OF THE SERIES XB
AMPLIFIERS FOR PROFESSIONAL USE,
OPTIMIZED FOR LIVE- AND FIXED INSTALLATIONS
CLASS H AMPLIFIER,
TOP MODEL OF THE BITTNER PRODUCT RANGE
AMPLIFIER WITH INTEGRATED 100V TRANSFORMERS, DESIGNED FOR
THE PROFESSIONAL INSTALLATIONS MARKET
VERY COMPACT EIGHT-CHANNEL AMPLIFIER,
EQUIPPED WITH FOUR INDEPENDENT POWER SUPPLIES
 Bittner-Audio 2002
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2 X 100W TO 2 X 400W
2 X 200W TO 2 X 400W
2 X 600W TO 2 X 2000W
2 X 100W TO 2 X 800W
8 X 100W TO 8 X 400W
BITTNER
Installation & Operations Manual
TABLE OF CONTENTS
DECLARATIONS OF CONFORMITY ...................................................................................................................... 3
CAUTION.......................................................................................................................................................... 3
PRODUCT DESCRIPTION ................................................................................................................................... 4
TECHNICAL SPECIFICATIONS ............................................................................................................................. 5
GETTING STARTED ........................................................................................................................................... 6
UNPACKING ................................................................................................................................................. 6
INSTALLATION .............................................................................................................................................. 6
FRONT PANEL.............................................................................................................................................. 6
BACK PANEL................................................................................................................................................ 6
AIR VENTILATION AND COOLING REQUIREMENTS ........................................................................................... 6
POWER CONNECTION................................................................................................................................... 7
LED INDICATORS ......................................................................................................................................... 7
CONNECTIONS ................................................................................................................................................. 8
AUDIO INPUT CONNECTORS.......................................................................................................................... 8
BALANCED AND UNBALANCED INPUTS, LEVELS .............................................................................................. 8
GROUNDING ................................................................................................................................................ 8
DECIBEL EXPLANATION ................................................................................................................................ 8
LOUDSPEAKER OUTPUT CONNECTORS ......................................................................................................... 9
100V CONSTANT VOLTAGE PRINCIPLES ............................................................................................................ 9
OPERATION MODES ......................................................................................................................................... 9
STEREO OPERATION .................................................................................................................................. 10
PARALLEL OPERATION ............................................................................................................................... 10
BRIDGED OPERATION (MONO) ................................................................................................................... 10
W ARRANTY TERMS & CONDITIONS.................................................................................................................. 13
Congratulations and thank you for your decision buying an amplifier from BITTNER. These amplifiers are
famous for their very high reliability. Advanced technical solutions and a big amount of electronic security
circuits allow a use with great efficiency.
DECLARATIONS OF CONFORMITY
Bittner-Audio hereby declares that this product is in accordance with the following standards:
EMC Regulation 89/336/EEC (Electromagnetic Compatibility)
EN-55013 (Radio Disturbance, Emission
EN-55020 (Electromagnetic immunity)
CAUTION
To reduce the risk of electrical shock, do not remove the cover. There are no user serviceable parts inside,
refer all servicing to qualified personnel. Replace fuses only with same type. Avoid damaging the AC plug or
cord. It can potentially causing a shock hazard. The unit should only be connected to an AC power supply of
the correct voltage.
To reduce the risk of fire or electrical shock, do not expose this appliance to rain or moisture. Do not use this
unit in damp areas or near water.
The amplifier must be adapted slowly to extreme temperature changes. These extreme changes can cause
moisture development inside the amplifier that can cause failure and /or electrical shock.
Though the amplifiers from BITTNER are quite simple to operate and are covered by a solid steel chassis,
improper use can be dangerous. Some of the amplifiers can put out very high voltages and a sizable current
at frequencies up to 30 kHz.
NEVER isolate the ground of the AC power cord (the non-fused earthed protective conductor) to eliminate
humm-problems. See chapter ‘Grounding’.
Always use safe operating techniques! Incompetent and improper servicing can void the warranty.
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PRODUCT DESCRIPTION
- super compact design
- modern design in SMD technology
- protection circuits for DC, infrasound, shortage and overheating
-screw terminals for loudspeaker outputs
- LEDs for SIGNAL, CLIP, PROTECT, POWER
- temperature controlled fans
The Bittner-Audio Series XV are Class AB amplifiers in a compact 2 RU chassis (3 RU for the XV 1600).
They are available in the range of 2x 100 Watt to 2x 800 Watt for 100V distributed loudspeaker lines. The
maximum amplifier power is delivered even under the most critical circumstances (IEC 268-3). The 100V
outputs are supplied by two integrated high-class 100V transformers.
The audio inputs are electronically balanced and the amplifiers are equipped with two combined XLR / TRSjack connectors. The maximum input level of all Bittner amplifiers is + 6 dBu.
The Series XV amplifiers are manufactured with the newest technology in amplifier design. Protection circuits
for DC, infrasound, shortage and overheating ensure a save and reliable operation.
The channels can be operated in stereo, parallel or bridge mode.
The models XV 400, XV 600, XV 1000, XV 1600 are also available as ‘CS’ version. Amplifier with the
integrated ‘CS’ option are equipped with a computer interface and can be controlled by the Bittner-Audio
SX16 control interface. Please ask for further information.
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Installation & Operations Manual
TECHNICAL SPECIFICATIONS
Type
XV 200
XV 400
XV 600
Number of Channels
Power (100V)
Frequency Response
Full Power 20Hz - 20kHz (dB)
THD + N (%)
Input Impedance
Max. Input Signal
Minimal Load Impedance
Channel Crosstalk
Noise A-rated
2
2x 100 Watt
-2 / -1,5 dB
2
2x 200 Watt
-2 / -1,5 dB
2
2x 300 Watt
-2 / -1,5 dB
0,08%
15 kOhm
+ 6 dBu
100V 100 Ohm
>75 dB
101 dB
0,08%
15 kOhm
+ 6 dBu
100V 50 Ohm
>75 dB
103 dB
0,07%
15 kOhm
+ 6 dBu
100V 33 Ohm
>75 dB
103 dB
Current Draw Full Power
Current Draw 1/3 Power
Current Draw 1/8 Power
Air Ventilation, Cooling
Weight
Dimensions
(mm)
4,1 Ampere
2,4 Ampere
1,6 Ampere
2 controlled fans
15 kg
2 HE
483 x 89 x 414
5,2 Ampere
3,2 Ampere
2,0 Ampere
2 controlled fans
17 kg
2 HE
483 x 89 x 414
6,1 Ampere
3,6 Ampere
2,3 Ampere
2 controlled fans
19 kg
2 HE
483 x 89 x 414
Type
XV 1000
XV 1600
Number of Channels
Power (100V)
Frequency Response
Full Power 20Hz - 20kHz (dB)
THD + N (%)
Input Impedance
Max. Input Signal
Minimal Load Impedance
Channel Crosstalk
Noise A-rated
2
2x 500 Watt
-2 / -1,5 dB
2
2x 800 Watt
-2 / -1,5 dB
0,03
15 kOhm
+ 6 dBu
100V 20 Ohm
>70 dB
105 dB
0,03
15 kOhm
+6 dBu
100V 12,5 Ohm
>70 dB
107 dB
Current Draw Full Power
Current Draw 1/3 Power
Current Draw 1/8 Power
Air Ventilation, Cooling
Weight
Dimensions
(mm)
9,9 Ampere
5,9 Ampere
3,8 Ampere
2 controlled fans
33 kg
2 HE
483 x 89 x 414
12,5 Ampere
7,4 Ampere
4,8 Ampere
2 controlled fans
38 kg
3HE
483 x 134 x 454
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Installation & Operations Manual
GETTING STARTED
Unpacking
Upon unpacking, please inspect the amplifier. If you find any damage, notify your supplier immediately. Be
sure to save the carton and all packing materials in case you have to send the product to the supplier.
Please use only the original factory packing. If the shipment carton is unavailable, contact MediasPro
Medientechnik GmbH to obtain a replacement.
Installation
The amplifiers will mount in standard 19-inch racks having sufficient depth. BITTNER-Audio recommends
using all mounting holes to secure the power amplifier in the rack. For the installation 4 metric M6 bolts
should be used.
Front Panel
Air Ventilation Grill
LED CLIP, SIGNAL, PROTECT, POWER
Main Power Switch
Channel Attenuators Channel 1 and 2
Back Panel
Power Cord,
Main Fuse,
Combined Inputs XLE / TRS-Jack,
Loudspeaker Screw Terminals,
Air Ventilation
Air Ventilation and Cooling Requirements
The amplifier is equipped with a forced air-cooling system with variable speed and temperature controlled
fans to guarantee low operating temperature and minimal ventilation noise. The air flow takes place from the
rear of the amplifier to the front. The air-pulling fans are installed on the back side of the unit.
In case any heat sink becomes too hot, the temperature sensor opens the respective output relay,
disconnecting the output load from the particular channel. In case the power transformer gets overheated, a
different sensor causes the output relays on all channels to open and to interrupt the outputs. After cooling
down to the appropriate operating temperature the relay contacts are closed again automatically.
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It is important to have adequate air ventilation space behind the amplifier to allow a proper air flow. In case
the amplifier is mounted into a closed rack, do not cover the front of the rack with doors. Using racks with a
closed backside, use fans on the rear rack panel (air flow to the inside of the rack). We recommend that for
every 3 mounted power amplifiers one open rack space (1RU) will be provided.
Power Connection
The power amplifier must be connected only with the attached three-wire safety power cord with protective
conductor (non-fused earthed conductor).
This amplifier is made for use with the mains voltage labelled on the back of
the amplifier only. Check the label on the back panel of the amplifier for the
appropriate voltage. Make sure the voltage of your mains outlet is correct.
The power voltage is factory set as labelled on the back panel and cannot be
changed afterwards. The amplifier must be ordered set to the appropriate
power voltage. Damage caused by connecting the amplifier to improper AC
voltage voids the warranty.
Always turn off and disconnect the amplifier from the mains voltage before
making any audio connections. As a precaution, turn the audio attenuators on
the front panel down during powering up.
The power fuses are located on the back panel of the amplifier and can be
accessed from the outside. Use only the appropriate fuses as labelled.
After properly mounting and connecting the AC cord and the audio connections, the unit can be switched on.
The POWER indication LED indicates that the amplifier has been turned on. The PROTECT - LED will also
light up and indicate active protection relays. This LED will turn off after 1.5 sec.
LED Indicators
The amplifier is equipped with 4 LEDs for each amplifier
channel: CLIP, SIGNAL, PROTECT and POWER
LED
COLOUR
FUNCTION
POWER
Green
Indicates, that the amplifier is powered up.
CLIP
Red
Indicates, that the input is overloaded. The LED starts illuminating as soon as the
signal is 0,5 dB under full power.
SIGNAL
Green
Indicates, that signal reaches the output stage of the amplifier.
PROTECT
Red
This LED will light up as soon a protection circuit has been activated or if one of
the output relays have been activated. When the amplifier is switched on, this
LED illuminated for approximately 1.5 seconds.
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CONNECTIONS
Always turn off the amplifier before making audio connections !
Audio Input Connectors
The amplifiers series XV are equipped with two combined input connectors.
They can be used for regular XLR connectors and for 6,3 mm TRS jacks,
mounted in the same connector chassis. The audio inputs of the series XV
amplifiers are electronically balanced.
Standard pinout for
XLR connectors:
1 = Ground, Shield
2 = Signal positive
3 = Signal negative
GND
-
GND
+
+
3
1
3
2
Symmetrisch
1
2
Unsymmetrisch
Standard pinout for the 6,3 mm TRS-jack:
Tip
= Signal positive
Ring
= Signal negative
Sleeve = Ground, Shield
Balanced and unbalanced Inputs, Levels
The amplifier can accept unbalanced or balanced lines. For optimum performance and with longer cable
runs, use balanced lines whenever possible. The driving device should be equipped with a balanced output.
With short cables inside one rack the issue is not that critical.
A balanced connection provides excellent noise immunity from interference and ground loops. A balanced
audio connection is accomplished by using a differential pair of signals, isolating them from ground. While
these connections provide great noise immunity, care must be used when connecting balanced and
unbalanced equipment together.
Grounding
The chassis ground of the amplifier is connected with the ground of the AC power cord (the non-fused
earthed protective conductor). As soon as several devices are connected with each other in a signal chain,
a ground loop is created. Ground loops are caused when current flows from the analog ground plane of one
piece of equipment to the ground plane of another. A compensating current travels between the different
devices on the shields of the audio cables. This is mostly causing humm-problems. On the back side of the
amplifier you’ll find the GROUND LIFT switch. This switch isolates the device chassis-ground from the pin 1
of the audio connectors and interrupts any compensating current between different devices.
NEVER isolate the ground of the AC power cord (the non-fused earthed protective conductor) to eliminate
humm-problems. This is a violation of the law and dangerous !
Decibel Explanation
A decibel is a logarithmic scale commonly used to express differences in signal levels. It is useful in audio
because it can express a wide dynamic range with relatively small numbers (or a small movement on a
meter), and it more closely matches how we perceive sound.
The measurement quoted in dB describes the ratio between the quantity of two levels, the level being
measured and a reference. The absolute quantity of the signal is not relevant. This means that decibels are
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always comparing one quantity to another. For example, when we measure gain in dB, we are comparing
the output level to the input level.
To describe an absolute value, the reference point must be known. There are different reference points
defined.
dBV represents the level compared to 1 Volt RMS. 0dBV = 1V with no reference to impedance.
dBu represents the level compared to 0,775 Volt RMS on an unloaded, open circuit.
dBm represents the power level compared to 1 mWatt. This is a level compared to 0,775 Volt RMS across a
600 Ohm load impedance.
1dBV equals +2.2dBu, +4dBu equals 1.23 Volt RMS, the reference level of -10dBV is the equivalent to a
level of -7.8dBu.
Headroom is a measure (usually in dB) of how much higher the peaks of a signal can be compared to the
nominal level without clipping. That is, it compares the peak level (in volts RMS) to the nominal level (in volts
RMS). The difference between the two (in dB) is the headroom.
Loudspeaker Output Connectors
The amplifiers series XV are equipped with integrated high-quality 100V
transformers.
The loudspeaker cables must be connected to the loudspeaker screw
terminals on the back panel of the amplifier.
To reduce the risk of electrical shock, make sure that the 100V wiring is
acomplished in accordance to the respective rules and regulations!
Don’t touch the 100V terminations while the amplifier is under operation.
An input signal with positive polarity at the input connector pin ‘+’ will
generate a signal at the loudspeaker connector of the respective channel
with positive polarity at the connection labelled ‘+’ .
100V CONSTANT VOLTAGE PRINCIPLES
100V-Systems are referred to as ‘constant-voltage distributed audio systems’. The constant voltage system
is the most economical way to install a multi-speaker sound reinforcement system.
The term ‚100V system’ relates to the maximum output voltage of the amplifier. 100V is the usual voltage in
Europe, 70V in the United States. A higher voltage up to 200V can also be used for very long cable runs and
higher power requirements.
To generate this high voltage, the amplifier is equipped with a step-up transformer, which transforms the
regular output voltage, in the 15 to 30 Volts range, up to the necessary 100V (or 70V respectively).
A 100V-loudspeaker is equipped with a step-down transformer, with a relative high input impedance. The
transformer’s output impedance matches the included chassis’ impedance (usually 8 Ohms). The ration
between the low amplifier’s output impedance and the individual speaker’s transformer input impedance is
usually between 1:100 and 1:1000.
Directly proportional to the maximum output power of the amplifier, each 100V amplifier matches a certain
minimum impedance than can be connected to this output. It does not matter how the connected impedance
is achieved. A large number of smaller speakers (with high input impedance at their step-down transformers)
or a small number of larger speakers (with lower impedance) can be connected to the 100V. Any
combination of different 100V-loudspeakers is possible, as long as the total impedance of the 100V line
doesn’t fall below the minimum impedance of the amplifier’s output.
The real output voltage of the amplifier during the transmission of music or speech is mostly far less that the
maximum 100V, proportionally representing the input signal. The term ‘100V’ defines the maximum voltage
in the system in the same way as the term ‘+6 dB’ defines the maximum level for a line signal.
OPERATION MODES
On the rear of the amplifier you'll find a mode select switch for the three different operation modes: STEREO,
PARALLEL and BRIDGED MODE.
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Stereo Operation
For stereo operation, turn the amplifier off and set the mode select switch to the STEREO position. In this
mode, both channels operate independently of each other, with their input attenuators controlling their
respective levels. Thus, an input signal at channel 1 produces an amplified signal at the output of channel 1,
while an input signal at channel 2 produces an amplified signal at the output of channel 2.
The level attenuators and the SIGNAL LEDs for both channels are located at the front panel. These LEDs
display the output level of the respective channel.
Stereo operation with two independent channels creates two individual 100V lines.
Parallel Operation
For parallel operation, turn the amplifier off and set the mode select switch on the PARALLEL position. Both
amplifiers are driven by the signal present at the input of channel 1. Both outputs carry the same signal. The
output terminal of both amplifier channels cannot be wired in parallel together, both channels must be used
as individual 100V lines.
The operation is similar to the stereo mode, only the input assignment is changed. Input signal on channel 1
will be sent to both channels, input connector 2 is not assigned.
Bridged Operation (Mono)
Both amplifier channels can be bridged together to create a single-channel mono amplifier. Use extreme
caution when operating in bridged mode. To bridge the amplifier, turn the amplifier off and set the rear mode
select switch to the BRIDGED position.
Only the input of channel 1 is active, channel 2 is out of circuit. Both input attenuators remain active for
individual level control. Connect the loudspeakers across the positive terminals of both outputs and connect
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the both negative terminals together. Both input attenuators must be in the same position to keep the load
balanced between the channel outputs.
The combined output of the bridged 100V outputs forms a 200V distributed loudspeaker line! Special 200Vtransformers for the installed loudspeaker systems must be used.
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FAILURES AND POSSIBLE CAUSES
SYMPTOM
POSSIBLE CAUSE
SOLUTION
The amplifier cannot be switched on.
Power cord not connected properly.
Check the power cords and the
mains power supply.
Mains power not available.
Main power fuses defect.
Check the main power fuses at the
back panel of the amplifier.
Amplifier is switched on, audio signal
supplied but LED SIGNAL doesn’t
illuminate.
Audio input cable defect or not
properly connected.
Check the audio signal cables and
the signal source.
SIGNAL LED is on, but no sound.
Speaker cables are not connected
properly.
Check the speaker cables and the
loudspeakers.
Loudspeaker defect.
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WARRANTY TERMS & CONDITIONS
Bittner-Audio (the manufacturer) warrants this product to be free from defects in materials and workmanship.
Should any part of this equipment be defective, the Manufacturer agrees to repair or replace any defective
part free of charge (except transportation charges) for a period of three years from the date of the original
purchase.
Warranty service is effective and available to the original purchaser only.
To obtain service under this warranty, the product must, on discovery of the defect, be properly packed and
shipped to the nearest Bittner-Audio dealer. The party requesting service must provide proof of original
ownership and date of purchase of the product.
If the warranty is valid, Bittner-Audio will, without charge for parts or labour, either repair or replace the
defective parts. Without a valid warranty, the entire cost of the repair is the responsibility of the product’s
owner.
The warranty does not cover defects or repairs needed as a result of :
1. Damage caused by abuse, accident, or negligence.
2. Damage caused by any tampering, alteration, or modification of the product or its components.
3. Damage caused by failure to maintain and operate the product in strict accordance with the written
instructions in this operating manual.
4. Damage caused by repairs or attempted repairs by unauthorized persons.
5. Damage caused by fire, water and other natural events.
6. Damage caused by operation on improper voltages.
Bittner-Audio, June 2002
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