PARK AUDIO GS Series User manual

GS4d
GS5d
GS6d
GS7d
GS8d
GS series
Park Audio
TWO-CHANNEL
PROFESSIONAL POWER AMPLIFIERS
WITH DSP
Owner’s Manual

UNPACKING
The manufacturer’s quality control system provides for careful examination of each
product before it leaves the factory to ensure its flawless appearance. After unpacking,
please, check the unit for any physical damage. In case of damage, please, contact your
local dealer. Keep the shipping carton and all packing material, as you may require them
for reshipment of the unit.
ACCESSORIES
1. Power Cord 1 pc.
2. Dust filter 2 pcs
3. Owner’s Manual 1 pc.
4. Warranty 1 pc.

TABLE OF CONTENTS
Стр.
Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . 2
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Design Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Functional Features . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Input and Output Connectors . . . . . . . . . . . . . . . . . . . . . . . 11
Cabel Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 12
AC Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . 13
ack-Mounting Requirements . . . . . . . . . . . . . . . . . . . . . . . 14
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Amplifier Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
AVIS
RISQUE DE CHOC ELECTRIQUE
NE PAS OUVRIR
CAUTION!
The amplifier runs on 230 V AC voltage. Removing the cover will expose you to a
potentially dangerous voltage! Do not use the unit if the electrical power cord is
frayed or broken.
Power is supplied from 230 V AC single-phase grounded 50/60 Hz source!
CAUTION!
To reduce the risc of fire or electric shock, do not expose the amplifier to rain or
moisture!
CAUTION!
The amplifier can yield dangerous output voltage! Do not touch the non-insulated
cable parts, connected to the unit in operation!
CAUTION!
The high sound pressure caused by the high output signal, applied to speaker
systems, may endanger your hearing. Please, take care to observe the required
safety precautions.
WARNING SIGNS:
Important information! Intended to warn the user about any important
information contained in this Owner’s Manual.
Hazardous voltage inside! Intended to warn the user about electric shock
hazard due to high voltage inside the product.
This sign next to the output terminals warns about dangerous voltage while in
operation.

3
GENERAL
The two-channel professional power amplifiers series with DSP are designed GS
for sound signal high-fidelity amplification within professional sound reproduction
systems.
The amplifiers are equipped with built-in DSP engine (DFM audio, Germany),
which provides the precision processing of the audio signal. To control the parameters
of the amplifier (or group of amplifiers) the program NetControl is used, the amplifiers
are connected via the ETHERNET interface.
To ensure faultless operation of amplifiers, please, take time to read this Manual
before use.
This manual applies to any GSd series amplifier:
–GS4d – 2 х 2000W into 2Ohms;
–GS5d – 2 х 2500W into 2Ohms;
–GS6d – 2 х 3000W into 2Ohms;
–GS7d – 2 х 3500W into 2Ohms;
–GS8d – 2 х 4000W into 4Ohms;.
ATTENTION!
The GS4d, GS5d, GS6d, GS7d, GS8d amplifiers have the same design and
functional features and differ only in the schematics elements, output power and
weight. Unless specified otherwise, the word “amplifier” hereinafter applies to any of
the above models.
To ensure the most advantageous and faultless operation of the amplifier, please,
read this Manual before use.
WARNING!
Make sure to take all precautions where required.
Please, follow all instructions and guidelines.
To avoid any risk of electrical shock and/or fire hazard, please, do not expose this unit
to rain or moisture. Do not use this unit near open water.
Use dry cloth to clean the unit.
Do not block fan vents.
Do not place the unit near heating radiators, furnaces or other heat-emitting devices.
Do not connect this unit to an ungrounded power supply line.
Protect the power cord against damage.
Disconnect the unit from power supply in case of thunder or during downtime.
In case of malfunctioning, caused by water or any other foreign matter inside or when
the unit has been dropped, or the power cord has been damaged, or the unit has been found
faulty, please, consult qualified personnel.
WARNING!
The amplifiers yield high output power. The GS4d, GS5d, GS6d, GS7d, GS8d
manufacturer shall not be held responsible for any damage to the speakers caused
by excessive power from the unit.

4
DESIGN FEATURES
Physical Design
The amplifier is enclosed in a metal (steel) case of 2U height. Amplifier front panel
is made of aluminum.
The amplifier must be fixed at four points, when installed in the RACK 19 "(two
points in front and two at the rear).
Power Supply Source
Switchable. Individual for each channel.
Cooling System
Forced, cooling rate smooth adjustable system.
Four fans, two per each channel. Backward air flow direction.
Dust Filter
Front panel filter easily removable/replaceable for periodic maintenance.
Power Amplifier Unit
Based on TD Class schematics.
TD Class power amplifier combines the best features of both Class D and analogue
amplifiers. The amplifier boasts the efficiency comparable to Class D amplifiers and
sound quality typical of analogue amplifiers.
Analog inputs
The amplifier is equipped with balanced analog inputs (XLR female).
The use of balanced inputs provides for an essential reduction of the environment-induced
hum and noise interference with long input connecting cables.
For DSP processing, the analog signal is converted to digital using four 24-bit A/D
converters, operating at 96 kHz. The dynamic range of A/D and D/A converters is 120 dB.
AES input
Input of channel 1 can be switched to digital input mode.
A digital two-channel audio signal can be applied to input. Sound signals can AES/EBU
be sent to an amplifier from a digital mixing console or other device, that generates a digital
audio signal (AES3). The inputs have balanced transformers and are AES/EBU AES/EBU
protected against static electricity. Built-in sample rate converters support a wide range of
input formats (16-24 bit / 44.1-192 kHz), converting any of them into internal format 24bit /
96kHz.
ETHERNET connectors
Two equivalent ports for connection to the ETHERNET network.
Provide the ability to configure and remotely control the amplifier over a network, using
the NetControl software. The built-in router allows you to connect multiple amplifiers in
chain.

ETHERNET connectors
Two equivalent ports for connection to the ETHERNET network.
Provide the ability to configure and remotely control the amplifier over a network,
using the NetControl software. The built-in router allows you to connect multiple
amplifiers in chain.
Line Outputs
Switchable. XLR (male).
Allows to appply signal to another amplifier. SWITCHED OUTPUT located on the
rear panel allow to choose signal applied to line outputs.
Note.
*In the case of amplifier power failure, the line output is connected to the line input via
relay, providing uninterrupted signal transit.
Input Signal
AES1-2 Digital Signal
(line output
connected to input via
buffer amplifier*)
CH1 Analog
Signal
CH2 Input Analog Signal
(line output connected
parallel to input)
CH1 Input Analog Signal
(line output connected
parallel to input)
AES1-2
Digital Signal
CH2 Analog
Signal
CH2 Input Analog Signal
(line output connected
parallel to input)
CH1 Analog
Signal
DSP engine OUT3
Output Analog Signal** CH2 Analog
Signal
DSP engine OUT4
Output Analog Signal**
CH1 CH 2
Signal is
not applied
to amplifer
Switches
Position
THRU
POST DSP
AES1-2
Digital Signal
DSP engine OUT3
Output Analog Signal**
DSP engine OUT4
Output Analog Signal**
Signal is
not applied
to amplifer
** The amplifiers have DSP module with four inputs (IN1-IN4). Only inputs IN1 and IN2
are used, inputs IN3 and IN4 are not used. Therefore, to receive a processed signal at the line
outputs, you need to enable signal routing to the outputs OUT3 and OUT4 from the inputs IN1
and/or IN2.
DSP engine
The amplifier is equipped with a flexible and powerful high-end DSP from
DFM audio, Germany.
The close integration of processing and amplification allows the DSP to monitor and
better respond to amplifier behavior, making dynamics processing far more accurate and
effective than that typically achieved with separate components. The onboard DSP offers
four channels of crossover filters, parametric EQ, FIR filter and alignment delay – everything
needed to optimize a loudspeaker system.
5
Output Signal Input Signal Output Signal

Flexibly configurable RMS and PEAK limiters in each channel ensure reliable
loudspeakers overload protection.
DSP settings control is performed via ETHERNET, using personal computer with the
installed NetControl software.
For use in large installations, the processor has the tools for group control of many
amplifiers simultaneously. The amplifier can be supplied with pre-formed library of passive
speakers.
Software is designed for group control of a large number of amplifiers
simultaneously. The program provides the ability to create virtual systems, which can be
automatically merging with real amplifiers.
It is based on the work with Speaker and Preset libraries. The amplifier can be supplied
with pre-installed Speaker libraries. Also, the user can update the Speaker library or create
his own library. When creating a sound system, the user simply selects the desired type of
loudspeaker from the library.
The NetControl installation package and user manual can be downloaded from
parkaudio.ua (’’Downloads’’ section on the GSd amplifier page).
User Interface
LCD display, LED indicators and controls (encoder and 2 buttons with illumination).
LED indicators on the front panel shows a signal presence, limiters activation and the
overload of each amplifier channel. Encoder, LCD and buttons provide local access to
navigation and DSP control.
Removable Power Cord
NEUTRIK powerCON 20A.
This feature is provided for convenience of transportation and rack mounting.
6

7
FUNCTIONAL FEATURES
Output Short-Circuit Protection
Individual per each channel. Protects the output stage of the power amplifier
against short-circuiting, as well as limits the output current when a maximum-level
sine signal is applied continuously to 2-Ohms loudspeaker.
Overload Protection
The double-stage overload protection system, independent for each channel, protects
the output stage and optimizes the quality sound under overload.
In the event of short overloads (for example, caused by a sharp decrease in
the complex load resistance), only the current protection of the output stage is
activated. It limits the output transistors current to safe level. Protect threshold
allows to give full output power shortly, even on case of very low load.
In case of a more continuous overload, the protection system activates the built-in Clip-
limiter, which reduces the level of the input signal.
DC Output Protection
With switchable power supply. Prevents DC Independent for each channel.
damage to loudspeakers.
The amplifier’s schematics precludes transit of any clicks or noise during the
power-on/off transition process.
Protection of loudspeakers against DC damage is ensured for each pair of channel by
individual power supply units which are disabled in the event of output DC voltage or
any powerful LF fluctuations. In case the protection system becomes active on all
channels and both power supply units become disabled, all indicators go off.
The amplifier can be restarted with the POWER toggle switch, by way of turning
the amplifier off and turning it on, about 2 minutes later again.
High Frequency Protection
Independent for each channel. Prevents any damage to HF drivers as might be
caused by non-musical signals of powerful high frequency spectrum.
Should any powerful high frequency fluctuations occur on the output either
as a result of poor contact in the input cable connectors, or being send to the
amplifier’s input by any other device (such as a crossover or mixing console), the
protection system activates the built-in optoelectronic Clip-limiter to reduce the
input signal level. Thus the protection system effectively prevents any damage to
tweeters as might be caused by non-musical signals of powerful high frequency
spectrum.

8
Thermal Protection
Independent for each channel. Protects the amplifier’s output stage against
overheating.
The amplifier may stop functioning only in case of the fan breakdown or blocked
air flow. In this case upon reaching 85°С, the independent protection system disables
the respective channel of the amplifier. The CLIP LED goes on and the SIGNAL LED of
the affected channel goes off. The amplifier resumes its operation in the reverse order.
As soon as the amplifier cools down, the affected channels gradually regain their
amplification level up to the set value.
Soft Start
Reduces the power-on inrush current.
The soft start system is provided to reduce inrush current to the amplifier and
to minimize the noise contributed by the amplifier to the power mains during the
power-on process.
Soft Signal Start
Ensures smooth power-on sound signal rise.
During the power-on process, this feature ensures smooth gain from zero to
the maximum level to provide for a smooth rise of the sound level emitted from the
loudspeakers.
Overvoltage Protection System
Relay system. Used to protect the amplifier against overvoltage in the mains.
In case of accidental connection of the amplifier to incorrect-wired mains, the
inter-phase voltage of 400V may be applied to the amplifier. In this case the
protection system will block the mains connection to the power supply. Only the
protection system stand-by power supply unit remains in operation. The system
activates, whenever the mains voltage exceeds ~265V. The amplifier automatically
resumes operation after the mains voltage goes down to ~260V.

9
FRONT PANEL
Dust filters.
LIMIT – Channel 1 and 2 limiters activation LEDs.
CLIP – overload LEDs for channels 1 and 2.
Indicating overload and distortion occurrence.
2 x 20 characters LCD display.
DSP CONTROL – encoder knob for the menu navigation and parameters
setting.
SIGNAL – индикаторы сигнала на выходе каналов 1 и 2.
SEL/MUTE – channel selection for setting parameters/ mute corresponding
channel.
POWER switch.
Ch 1 Ch 2
GS 6d
P OW E R AM P L IF I E R
13
27
3
6
5
12
8 11 10
9
4
1
1
2
3
9
8
4
7
6
5
10 11
12
13

REAR PANEL
Output fan grill.
ETHERNET LAN1, LAN2 – RJ45 connectors for ETHERNET network
connection.
Line output switches for channels 2 and 1, respectively.
SWITCHED OUTPUT – . (XLR male). line output for channels 2 & 1, respectively
Signals applied to line outputs are shown in DESIGN FEATURES, Line
Outputs).
INPUT CH2 – Channel 2 balanced line input (XLR female). Used for applying
analog input signal for channel 2.
INPUT CH1/AES1-2 – balanced line input (XLR female).
Used for applying analog input signal for channel 1 or applying digital signal to
channel 1 and 2.*
MAINS IN – mains cable connector.
SPEAKER OUTPUTS – output SpeakOn connectors for speakers connection.
Connectors pin assignment are marked on the amplifier rear panel.
Note.
*Analog/digital signal choice is performed via local amplifier interface or NETControl
software.
NLT4M
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PUSH PUSH
model
Ser.No 00000000000
Park Audio II, Ltd
CH2 CH1/AES1- 2
SWITCHED OUTPUT
THRU POST
DSP
SWITCHED OUTPUT
THRU POST
DSP
INPUT
INPUT
CH1
2 min
CH2
SPEAKER OUTPUTS
THIS UNIT HAS COOLING.
DO NOT BLOCK FAN VENTS
WARNING!
DO NOT BLOCK FAN VENTS
THIS UNIT HAS COOLING.
WARNING!
WARNING!
WARNING!
THIS UNIT SHOULD BE SUPPORTED ON ALL FOUR CORNERS
WHEN INSTALLED IN A RACK.
TO REDUCE THE RISK OF ELECTRIC SHOCK THE GROUND
CONNECTION OF THE AC PLUG MUST BE MAINTAINED.
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
DO NOT REMOVE COVER.
NO USER SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
2 min
11
1
BRIDGE
4 min
11 2
CH2
2 min
2 2
1
Made in Ukraine
MAINS
IN
ETHERNET
LAN1LAN2
2 3 45 6 7 8 9
11 12 13
1 10
1
2
4
10
3
9
58
7
12 13
6
11
10

INPUT AND OUTPUT CONNECTORS
Input Connectors
Use XLR (male) connectors to connect to the amplifier inputs and XLR (female)
connectors to line outputs. See the wiring on the figures below.
Output Connectors
Use SpeakON NL4FX (NL2FC) or NL4FX (NL4FC) connectors to connect speaker
systems to the amplifier individual channel outputs. For connection of both channels via a
single cable, use SpeakON NL4FX (NL4FC). See the wiring on the figures below.
CAUTION! Never attempt to jumper or otherwise link up any pins of output connectors.
Use a POZIDRIVE PZ1 screwdriver to connect cables to connectors. Never use a
PHILIPS screwdriver. See the detailed wiring information at http://www.neutrik.com
21
3
2 1
3
XLR (male) XLR (female)
Signal ( – ) /AES2
Shield (Ground)
Signal ( + ) /AES1
Signal ( – ) /AES2
Signal ( + ) /AES1
Shield (Ground)
11
NL2FX for individual channel linking up NL4FX for BRIDGE MODE
NL4FX for individual channel linking up NL4FX for linking up two channels
with a single connector
Output (–)
1+
1-
2+ 2-
1+
1-
Output ( )
+
Output (–)
Output ( )
+
2+ 2-
1+
1-
Channel 1
Output (–)
Channel 1
Output ( )
+
1+
1-
Output (–) Output ( )
+
Channel 2
Output ( )
+
Channel 2
Output (–)

12
CABLE REQUIREMENTS
Input Cables
Make sure to use only shielded cables whether balanced or unbalanced. Shielding
when properly grounded protects a signal against external electrical interference. As a rule,
unbalanced lines of over 3 meters long are not acceptable. Greater distances require a
balanced cable.
Avoid placing input cables close to power cords or power transformers.
Output Cables
The amplifier is capable of delivering high level output current; therefore, the wire
gauge used for speaker cables is particularly important. Inadequate wire gauge adds
significant resistance to the speaker’s own impedance, reducing the power which is actually
delivered to the speaker. It will also result in a decreased damping factor and possible fire
hazard.
Since the power applied to the loudspeaker is of primary concern in system design, we
have included the table below to allow you determine the appropriate wire gauge for your
application.
Power Loss in a 10-meter Cable
1.50
2.00
2.50
4.00
6.00
0.24
0.18
0.15
0.09
0.06
10.7 %
8.3 %
7 %
4.3 %
2.9 %
2.9 %
2.2 %
1.8 %
1.1 %
0.7 %
5.7 %
4.3 %
3.6 %
2.3 %
1.5 %
Wire Gauge
2
(mm )
Cable
Resistance
(Ohms)
Cable power loss
2Ohm load 8Ohm load4Ohm load
The table shows the percentage of the power loss in a 10-meter copper multiple-core
cable. This table reflects the power loss as a percentage of the output power of the amplifier
applied to the load. Use this table to determine the power loss to the load at other cable
lengths. For example, if you plan to deliver 1000Watts to 2-Ohms load through 20m of 2.5-
mm2 cable, the power loss in the cable would be 7 % x 2=14 % of 1000W or 140W lost in the
cable.

13
AC POWER REQUIREMENTS
Use 230 V 50/60 Hz single-phase grounded power supply mains for amplifier.
The quality of the AC power supply mains is of prime importance for the
amplifier functioning. The amplifier should be powered from the mains designed
for at least 1.5 times the average current consumed by the amplifier.
Never try to connect the amplifier to a household power supply mains.
Use the power cord supplied. The power cord supplied with a GS6, GS7 or GS8
amplifier has only a PowerCon connector on one side. The other side of the cord should
be connected either directly to the power distributor terminal box or to an industrial-type
three-pin plug. Use a plug designed for the current rating not less than the average
current consumed by the amplifier.
Connection and wiring must be performed by a qualified technician.
Never use household-type electric plugs.
Prior to plugging, please, make sure that there are no other devices consuming
much AC current, as the normal operation of such several devices may be impossible.
In the event of line voltage sag, the unit will continue to operate normally, albeit with less
power.
The actual AC current consumption by the amplifier depends on the type of the
music program and the load impedance. While installing the audio systems, in order to
optimize the power wiring, please, note that for reproduction of typical audio material at
the full output level, the average current consumption rate is as follows:
– 4/7 A for GS4d into 4/2 Ohms;
– 5/9 A for GS5d into 4/2Ohms;
– 6/11 A for GS6d into 4/2 Ohms;
– 7/11 A for GS7d into 4/2 Ohms;
– 8 A for GS8d into 4Ohms.
* Note: The above ratings are given for a crest-factor 3 musical signal. Some
modern music genres may have less crest factor, which may lead to increased current
consumption.
In order to minimize the AC current hum and noise, make sure to plug all audio
devices interconnected with signal cables, into the same mains outlet.

14
RACK-MOUNTING REQUIREMENTS
The amplifier is designed to fit a standard 19” rack. While mounting, make sure to
provide unhindered air access to the front and rear sides of the rack. The fan blows air
backwards. It is not necessary to leave empty space above or below the amplifier. Prior
to installing the amplifier into the rack, remove the rubber feet from the amplifier bottom
panel. Having done that, put the amplifier into the rack and secure it in place with four
screws with washers. The manufacturer strongly recommends to secure the amplifier
rear brackets to the rack, too. Where required, use a transition bracket (optional) to
extend the mounting depth of the amplifier mounted into the rack.
MAINTENANCE
Cleaning of Dust Protective Air Filter
No special tools are required for removing the filter. Just grip it and pull. Wash the
filter with any detergent, flush it with water, let it dry and re-install.
In case the filter is worn out, replace the filter with a spare one supplied.
ATTENTION! Never install a wet filter.
Do not dry the filter with hot air or expose it to direct sun rays.

AMPLIFIER SETUP
DSP settings control is performed via ETHERNET, using personal computer with the
installed NetControl software*.
Some DSP engine settings are available in the amplifier system menu.
INPUT VOLUME – signal level setting for
each channel **.
INPUT DELAY– delay setting for each
channel. **.
LOAD PRESET – presets loading from
Preset Library (memory cell 1 ... 92).
Applied to all channels simultaneously.
SET SPEAKER – Speaker presets loading
from Speaker Library (memory cells 93
... 190).Applied to all channel se-
parately.
STORE PRESET – current setting store as
user preset into Preset Library ( in one of
the memory cells (1 ... 92).
SETUP IP – amplifier IP address setting.
SELECT INPUT – input mode choise
(analog or digital AES/EBU).
SYSTEM TEMPERATURE – amplifier
temperature.
BACKLIGHT –LCDbacklight activation***.
AMPLIFIER INFO information about –
amplifier.
AMPLIFIER STATE amplifier state –
information. Shows error codes.
Note.
*The NetControl installation package and user manual can be downloaded from
parkaudio.ua (’’Downloads’’ section on the GS4d...GS8d amplifier page).
** Input channels Ch3 and Ch4 are not used. backlight
*** Auto backlight is not available.
15
Ch1: –120 ... +15 dB
1 ... 92
Analog/Digital
CH1: 0 ...1500 ms
CH2: 0 ...1500 ms
CH3: 0 ...1500 ms
CH4: 0 ...1500 ms
1 ... 92
CH1: 93 ... 190
CH2: 93 ... 190
CH3: 93 ... 190
CH4: 93 ...190
Ch2: –120 ... +15 dB
Ch3: –120 ... +15 dB
Ch4: –120 ... +15 dB
On/Auto
STORE PRESET
LOAD PRESET
SELECT INPUT
INPUT VOLUME
INPUT DELAY
SET SPEAKER
SYSTEM
TEMPERATURE
AMPLIFIER
INFO
AMPLIFIER
STATE
MAIN MENU
BACKLIGHT
1:
2:
3:
4:
6:
5:
SETUP IP
8:
9:
11:
12:
10:
7:

To make changes in the current menu item short click the DSP CONTROL knob.
Rotating the DSP CONTROL knob set the needed parameter setting.
In this menu item (VOLUME) signal level for each channel is set. The desired
channel is chosen by clicking SEL/MUTE button for the corresponding channel. The
channel number is indicated in the upper line of the LCD-display. Rotating the
DSP CONTROL knob changes parameter with step 0.1dB. The step can be changed
from 0.1dB to 1dB and vice versa by short clicking DSP CONTROL knob.
No parameters confirmation needed. It is enough to choose another channel or exit
from current menu item. To exit current menu item press and hold DSP CONTROL knob.
When the power is turned off, the amplifier remembers the current settings. When
amplifier is turned on again, all previous settings will be restored automatically.
Enter the menu by short clicking the encoder knob DSP CONTROL.
Choose the needed menu item by knob DSP CONTROL rotation.
Current menu item is marked by the arrow cursor (left and right).
16

17
ТЕХНИЧЕСКИЕ ХАРАКТЕРИСТИКИ
Output Power:
– GS4d 2 х 2000W (2 Ohm, ~230V)
2 x 1500W (4 Ohm, ~230V)
3600W (bridge, 4 Ohm, ~230V)
2700W (bridge, 8 Ohm, ~230V)
– GS5d 2 x 2500 W (2 Ohm, ~230 V)
2 x 2000 W (4 Ohm, ~230 V)
4500 W (bridge, 4 Ohm, ~230 V)
3600 W (bridge, 8 Ohm, ~230 V)
– GS6d 2 x 3000 W (2 Ohm, ~230V)
2 x 2300 W (4 Ohm, ~230V)
5400 W (bridge, 4 Ohm, ~230V)
4140 W (bridge, 8 Ohm, ~230 V)
– GS7d 2 x 3500 W (2 Ohm, ~230 V)
2 x 3000 W (4 Ohm, ~230 V)
6300 Вт W (bridge, 4 Ohm, ~230 V)
5400 Вт (мост, 8Ом, ~230V)
– GS8d 2 x 4000 W (4 Ohm, ~230 V)
2 x 2200 W (8 Ohm, ~230 V)
7200 W (bridge, 8 Ohm, ~230 V)
Peak Output Voltage:
– GS4d 135V
– GS5d 150V
– GS6d 165В
– GS7d 180V
– GS8d 210V
Frequency Responce * 20Hz – 20kHz (±0.2dB, Pnom., Ryjv.)
Signal-to-Noise Ratio unweighted: 100dB ( , Analog Input)
105дБ ( , AES/EBU Input)unweighted
Total Harmonic Distortion: 0.02 % (1kHz, Rном.)
0.05% (20Hz – 20kHz, Rnom.)
Damping Factor 800 (1kHz, 8 Ohm)
Channel separation 60dB (1kHz)
Slew Rate V/µs: 60 (channel)
120 (bridge)V/µs
Voltage Gain 35dB
Input Impedance balanced  10kOhm ( )

Max. Input Level +15 dBu
Signal Latency: 1.16ms (at 48 kHz)
529 (at 96kHz)µs
ADC / DAC 24 bit, 96 kHz (AKM)
Digital Input AES / EBU, 24 bits, 32–96 kHz (built-in
Sample Rate Converter)
DSP Parameters SHARC DSP, 96 kHz sampling rate / 40 bit floating point
ADC: 120dB SNR , -100 dB THD/N,
+18 dBU Input Level
DAC: 120 dB SNR , -104 dB THD/N,
+18 dBU Output Level
DSP Functions Crossovers. 20 PEQ per channel.
Delay up to 1.5sec/channel.
RMS and Peak Limiters.
Two banks of FIR filter (500 tap each)
per channel.
Speaker library (96 speaker).
92 user presets.
Power Requirements ~230VAC, 50/60 Hz
Weight:
– GS4d 13.5kg
– GS5d 13.7 k g
– GS6d 13.9kg
– GS7d 14.1kg
– GS8d 14.3kg
Dimensions:
– width 482mm
– height 88 mm (2U)
– height plus feet 96 mm
– depth 468 mm
– depth in rack 460 mm
OPERATING CONDITIONS
Air temperature: 5 ... 35°C
Atmospheric pressure: 86.6 ... 106.7kPa (650 – 800 MMHG)
Relative humidity: less than 80%
18