Audiolab S7.4, S10.2, S15.2, S13.4 User Manual
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- AUDIOL AB STEEL SER IES
S7.4 - S10.2
S13.4 - S15.2
Professional Power Amplier
USER MANUAL
P. 2
AUDIO LAB S TEEL SER IES -
1. OVERVIEW
Steel S7.4
Professional Power Amplier
Steel S7.4 is a professional power amplier with a
maximum output power of 4 x 670W @ 8-ohm / 4
x 1030W @ 4-ohm and a maximum bridged output
power of 2 x 2300W (RMS) @ 8-ohm. With a performance that stands out for its very low distortion and high delity, Steel S7.4 is equipped with
a switching-mode power supply. Precisely thanks
to the design of its power supply, the amplier
allows the peak power to follow the dynamic range
of the musical program, being able to reproduce
up to twice the RMS power, without clipping. This
translates, basically, into peaks with much more dynamic range than a conventional-source amplier.
As one would expect in ampliers of this range, the
whole Steel series is equipped with a very ecient
ventilation and has a comprehensive section of
protections, to assure its correct operation in the
most demanding situations.
Specications
Output
• Rated output power (8-Ohm): 4 x 670W
• Rated output power (4-Ohm): 4 x 1030W
• Rated output power (Bridge @ 8-Ohm): 2 x
2300W
Performance
• Input impedance:
• Balanced: 20Kohm
• Unbalanced: 10Kohm
• Input sensitivity: 0.775Vor1.4V
• Frequency Response: 20Hz~20KHz
• THD: <0.05%
• Damping factor (8-ohms) 10Hz-400Hz: >200
• Crosstalk (at 1Khz): - 75dB
• Signal to noise ratio: >100dB
• Slew rate: 20V/us
• Voltage gain: 35.5dB
• Intermodulation distortion: =/<0.35%
• Protections: Thermal, short circuits, no-load,
on/o muting & RF interference
Connectors & back panel controls
• Power supply connector: Interlock In
• 4 XLR-3 inputs
• 4 Speakon speaker outputs
• Bridge, parallel & input sensibility switch
Physical
• Cooling: Two Front-to-back fans, temperature controlled speed.
• Net Weight: 8 kg. / 17.6 lbs.
• Dimensions: 482x227x88 mm. / 19x8.9x3.5
in.
English version
P. 3
- AUDIOL AB STEEL SER IES
STEEL S10.2
Professional Power Amplier
Steel S10.2 is a professional power amplier with a
maximum output power of 2 x 1000W @ 8-ohm / 2
x 1650W @ 4-ohm and a maximum bridged output
power of 1 x 3350W (RMS) @ 8-ohm. With a performance that stands out for its very low distortion
and high delity, Steel S10.2 is equipped with a
switching-mode power supply. Precisely thanks to
the design of its power supply, the amplier allows
the peak power to follow the dynamic range of the
musical program, being able to reproduce up to
twice the RMS power, without clipping. This translates, basically, into peaks with much more dynamic range than a conventional-source amplier. As
one would expect in ampliers of this range, the
whole Steel series is equipped with a very ecient
ventilation and has a comprehensive section of
protections, to assure its correct operation in the
most demanding situations.
Specications
Output
• Rated output power (8-Ohm): 2 x 1000W
• Rated output power (4-Ohm): 2 x 1650W
• Rated output power (Bridge @ 8-Ohm): 1 x
3350W
Performance
• Input impedance:
• Input impedance:
• Balanced: 20Kohm
• Unbalanced: 10Kohm
• Input sensitivity: 0.775Vor1.4V
• Frequency Response: 20Hz~20KHz
• THD: <0.05%
• Damping factor (8-ohms) 10Hz-400Hz: >200
• Crosstalk (at 1Khz): - 75dB
• Signal to noise ratio: >100dB
• Slew rate: 20V/us
• Voltage gain: 36dB
• Intermodulation distortion: =/<0.35%
• Protections: Thermal, short circuits, no-load,
on/o muting & RF interference
Connectors & back panel controls
• Power supply connector: Interlock In
• 4 XLR-3 inputs
• 4 Speakon speaker outputs
• Bridge, parallel & input sensibility switch
Physical
• Cooling: Two Front-to-back fans, temperature controlled speed.
• Net Weight: 7.5 kg. / 16.5 lbs.
• Dimensions: 482x227x88 mm. / 19x9x3.5 in.
English version
P. 4
AUDIO LAB S TEEL SER IES -
STEEL S13.4
Professional Power Amplier
Steel S13.4 is a professional power amplier with a
maximum output power of 4 x 1220W @ 8-ohm / 4
x 1670W @ 4-ohm and a maximum bridged output
power of 2 x 4000W (RMS) @ 8-ohm. With a performance that stands out for its very low distortion
and high delity, Steel S13.4 is equipped with a
switching-mode power supply. Precisely thanks to
the design of its power supply, the amplier allows
the peak power to follow the dynamic range of the
musical program, being able to reproduce up to
twice the RMS power, without clipping. This translates, basically, into peaks with much more dynamic range than a conventional-source amplier. As
one would expect in ampliers of this range, the
whole Steel series is equipped with a very ecient
ventilation and has a comprehensive section of
protections, to assure its correct operation in the
most demanding situations.
Specications
Output
• Rated output power (8-Ohm): 4 x 1220W
• Rated output power (4-Ohm): 4 x 1670W
• Rated output power (Bridge @ 8-Ohm): 2 x
4000W
Performance
• Input impedance:
• Balanced: 20Kohm
• Unbalanced: 10Kohm
• Input sensitivity: 0.775Vor1.4V
• Frequency Response: 20Hz~20KHz
• THD: <0.05%
• Damping factor (8-ohms) 10Hz-400Hz: >200
• Crosstalk (at 1Khz): - 75dB
• Signal to noise ratio: >100dB
• Slew rate: 20V/us
• Voltage gain: 37.8dB
• Intermodulation distortion: =/<0.35%
• Protections: Thermal, short circuits, no-load,
on/o muting & RF interference
Connectors & back panel controls
• Power supply connector: Interlock In
• 4 XLR-3 inputs
• 4 Speakon speaker outputs
• Bridge, parallel & input sensibility switch
Physical
• Cooling: Two Front-to-back fans, tempera-
ture controlled speed.
• Net Weight: 13 kg. / 28.6 lbs.
• Dimensions: 482x349x88 mm. / 19x13.7x3.5
in.
English version
P. 5
- AUDIOL AB STEEL SER IES
Steel S15.2
Professional Power Amplier
Steel S15.2 is a professional power amplier with a
maximum output power of 2 x 1520W @ 8-ohm / 2
x 2300W @ 4-ohm and a maximum bridged output
power of 1 x 4600W (RMS) @ 8-ohm. With a performance that stands out for its very low distortion
and high delity, Steel S15.2 is equipped with a
switching-mode power supply. Precisely thanks to
the design of its power supply, the amplier allows
the peak power to follow the dynamic range of the
musical program, being able to reproduce up to
twice the RMS power, without clipping. This translates, basically, into peaks with much more dynamic range than a conventional-source amplier. As
one would expect in ampliers of this range, the
whole Steel series is equipped with a very ecient
ventilation and has a comprehensive section of
protections, to assure its correct operation in the
most demanding situations.
Specications
Output
• Rated output power (8-Ohm): 2 x 1520W
• Rated output power (4-Ohm): 2 x 2300W
• Rated output power (Bridge @ 8-Ohm): 1 x
4600W
Performance
• Input impedance:
• Balanced: 20Kohm
• Unbalanced: 10Kohm
• Input sensitivity: 0.775Vor1.4V
• Frequency Response: 20Hz~20KHz
• THD: <0.05%
• Damping factor (8-ohms) 10Hz-400Hz: >200
• Crosstalk (at 1Khz): - 75dB
• Signal to noise ratio: >100dB
• Slew rate: 20V/us
• Voltage gain: 38.3dB
• Intermodulation distortion: =/<0.35%
• Protections: Thermal, short circuits, no-load,
on/o muting & RF interference
Connectors & back panel controls
• Power supply connector: Interlock In
• 4 XLR-3 inputs
• 4 Speakon speaker outputs
• Bridge, parallel & input sensibility switch
Physical
• Cooling: Two Front-to-back fans, temperature controlled speed.
• Net Weight: 7.5 kg. / 16.5 lbs.
• Dimensions: 482x227x88 mm. / 19x9x3.5 in.
English version
P. 6
AUDIO LAB S TEEL SER IES -
Welcome
Welcome to use Steel series professional audio
power amplier. For your safet, please read the
caution before installing and operating the power
amplier.
Steel series professional power amplier has a
stable circuit and reasonable cooling layout and
the carefully selected components, concise manufacturing process, ling time burning test, to ensure
that the amplier has excellent performance and
reliability.
Product Checking
Open de box to check your new amplier. If you
nd there is damage, please advise the logistic
company timely, and you have the right to claim for
ligistic company for the losscaused during transport as you are the consignee.
Features
1. Adopt the E.I.A. international standard (2U)
3.5¨ (88mm) professional amplier chassis.
2. Power supply design:
Each unit contains a set of ligical power supply.
Adjust the power output level voltage through
the logic power supply real-time dynamic control
circuit. And can real-time dynamically adapt to the
signal and load requirements, which can achieve
the optimal power matching under the wide load
conditions, and ensure the amplier will not overheat.
3. Signal voltage limit:
There is a voltage limiter in each input channel,
by detecting the output signal and controlling the
input signal, to make the amplier output will not in
the clipping state for a long time, protect the horn
will not be burned; and will automatically control
the input signals when the amplier ir overheated, to make the amplier reduce heating, and use
more safe.
4. Professional Speakon socket suit for the
engineering and touring performance.
5. To withstand the longo-term bumps along
the way, all the spare parts are through the
special reinforcement.
6. Adopt the precision CNC lashed to stamp
the integrated steel plate to make the structure extremely strong and be able to withstand the maximum transient pressure without deformation.
7. Perfect protection function:
Amplier provides many dierent types of protection functions, including DC protection, internal fault protection, input overload protection, RF
interference lter, output short circuit protection,
un-match load and high-frequency overload
protection, overheat protection of heat-sink and
tranformer and power supply input over-current
protection (over-current protection switch).
8. XLR balanced input and output.
Functions & Features
1. Ecient heat-sink, variable speed cooling fan,
ensures the amplier working at the low temperature.
2. Large annulator transformer, ensure the
enough power supply.
3. Exquisite shape and standard installation hole.
4. Perfect protection, including limit, the on/o
shock protection, DC protection, output shot
circuit protection, overheat protection.
5. In-built limiter, it is a very eective protection
against electrical damage to the speaker.
6. Excellent audio signal performance, which has
English version
2. INTRODUCTION
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- AUDIOL AB STEEL SER IES
English version
excellent signal conversion feature, it has very little
harmonic distortion (THD), intermodulation distortion (SMPTE-IM), transient intermodulation distortion, pure and natural interstitial deduction.
7. Stereo, Bridge, Parallel working mode.
8. Each channel has its Signal and Clip indicator.
9. When the protection circuits work, Fault indicator lights, and sound output automatically stio at
the same time.
10. The front panel level gain control.
11. The newest SMD component technology
makes the product more stable and realiable.
12. The transistors directly contact with the heat
sink to make it cool quickly.
13. The optimization cooling system let the machine work stability, automatic variable speed fan.
14. The unique short circuit locking and automatically reset function let the customers visual
performance more reliable.
Cautions
1. This amplier only can plug in the AC power
socket which the user´s manual instructs or the
specication is shown on this adapter. Or else it
may damage eha amplier and cause a re or electric shock.
2. Do not place heavy objects (including this amplier) on the power cord, or else it may damage the
power cord and the cause an electric shock or re.
3. Do not expose the amplier in the fume, high
humidity, high temperature and dust accumulation
place and use.
4. Do not put this amplier sidelong or upside
down, use it in a good air ow environment.
5. When abnormity happen in the operation
process, such as smoke, odor, of foreign bodies,
liquid entering into the amplier, plase turn o the
amplier immediately, and unolug the socket from
the AC power socket.
6. The device shall not be exposed to dripping or
splashing, shall not be placed the item which is
lled with liquid on the device, such as vase and so
on.
7. When the device is connected to the power
supply socket, it needs the ground protection.
8. The socket of the power cord needs to keep n
the normal operational condition.
9. If need to completely disconnect this device
from the AC main line, please unplug from the AC
power outlet, when you need to power on, please
plug in the AC power outlet again.
10. When abnormity happen, please don´t open
the chassis and rebuilt or repair the amplier by
yourself, if the internal is sure to need repair and
maintenance, please contact the dealers to deal
with it.
Operation
1. When the speaker is connected to the amplier
outputsocket, it only can use the speaker special cable and connect it in accordance with the
provisions.
2. When connect the amplier, please close all the
instruments, audio equipments and speakers.
3. Before turning on the amplier, please turn
3. SAFETY OPERATION
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AUDIO LAB S TEEL SER IES -
Front Panel
down the volume to a minimum.
4. If you dont use this amplier for a long time,
please unplug the power cord from the AC mains
socket.
Power switch: It can turn on/o the amplier.
When turn on, the Power LED lights.
Fault LED: When circuit protection works, the
LED will light, specially when the heat-sink overheat or detect the DC voltage in the amplier,
the LED will light. Turn on the amplier within
three seconds, the amplier is ready to work, the
LED will shine. When nish start or the problem
is removed, the LED will estinguish, and resume
working normally.
Clip LED: When the output signal distortion of the
corresponding channel exceeds 1%, the LED will
light, because of the signal level is too high, and
have been cut-o.
5. When unplug the power plug from the AC power socket, please grasp the plug. Do not directly
pull the cable. Otherwise it can damage power
cord and then lead to a re or electric shock.
4. MAIN OPERATION KEY & FUNCTIONS
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- AUDIOL AB STEEL SER IES
Signal LED: When there is the input signal, the
LED will light, if not, please check the gain settings, if necessary, can increase the gain. Check
the input connection and signal audio source.
If the Clip LED shines a little of shows no signal,
check the output wire whether it is shot-circuit or
not.
Gain control: Use to set the output level of each
channel.
Rear Panel
Power outlet: When use the amplier, should check whether the selected voltage is cor-
rect or not, if the voltage is wrong, it could damage the amplier, please ensure the device
be connected to the power supply with ground to use
Signal input: The input interface connects to the mixer directly. The input of the corresponding channel and output connector are connected together to provide the xed
connection, do not need to consider the power switch setting.
Parallel output XLR connector: This socket is parallel with the input XLR socket, input
directly output via this socket, S series 2CH and 3CH models have this function.
Output connection: Amplier output channel, it provides the output by connecting the
SPEAKON connector.
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AUDIO LAB S TEEL SER IES -
Circuit breaker: When amplier overloaded (cause by the small load impedance of the
amplier or the continuous input signal), the button of the circuit breaker will immediately
upspring, and will power o automatically to protect the amplier. And you must exclude
overload condition, and then press the button of the circuit breaker, and the power amplier can resume to normal operation.
Channel mode switching switch:
Mainly complete the switching of STEREO mode and BRIDGE/PARALLEL by adjusting. Dial switch function: shown as M1 silkscreen, when M1 dial switch faces up which means CH1 is parallel to CH2, when
it faces down which means it is o. Key switch function: when key switch faces up which means CH1 is
bridge to CH2, when it faces down which means it is o.
Mode Switch:
MONO mode: make the two channel work independently, CH1 input signal by CH1 output, CH 2 input
by CH2 output. BRIDGE mode: make CH1 input signal from the BRIDGE output socket output, must use
the volume control of CH1 to adjust the volume PARALLEL mode: make CH1 input signal by CH1 and CH2
output socket output. The input socket of CH2 is no eect. Channel's volume can be adjusted independently.
Sensitivity mode: It mainly adjusts the ratio between the input and output.
Speakon output connection (2CH)
Stereo connection
English version
P. 11
- AUDIOL AB STEEL SER IES
Mono connection
Bridge connection
English version
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