HK AUDIO FA M I LY
DSA-800
ORDERCODE D4104
Congratulations!
You have bought a great, innovative product from DAP Audio.
The DAP Audio DSA series bring excitement to any venue. Whether you want simple plug-&-play action or a
sophisticated show, this product provides the effect you need.
You can rely on DAP Audio, for more excellent audio products.
We design and manufacture professional audio equipment for the entertainment industry.
New products are being launched regularly. We work hard to keep you, our customer, satisfied.
You can get some of the best quality, best priced products on the market from DAP Audio.
So next time, turn to DAP Audio for more great audio equipment.
Always get the best -- with DAP Audio !
Thank you!
DAP Audio
DAP Audio DSA-250, DSA-400, DSA-600, DSA-800 Product Guide
Warning..................................................................................................................................................................
Safety-instructions............................................................................................................................................
Operating Determinations..............................................................................................................................
2
2
3
Description.............................................................................................................................................................
Features.............................................................................................................................................................
Overview Front panel......................................................................................................................................
Overview Back panel......................................................................................................................................
4
4
5
6
Operation...............................................................................................................................................................
7
Mode selection......................................................................................................................................................
8
Connection Cables...............................................................................................................................................
10
Maintenance.........................................................................................................................................................
11
Troubleshooting.....................................................................................................................................................
11
Product Specifications..........................................................................................................................................
12
Wire Gauge Charts................................................................................................................................................
14
1
WARNING
CAUTION!
Keep this system away from rain and moisture!
FOR YOUR OWN SAFETY, PLEASE READ THIS USER MANUAL CAREFULLY
BEFORE YOUR INITIAL START-UP!
SAFETY INSTRUCTIONS
Every person involved with the installation, operation and maintenance of this system have to:
be qualified
follow the instructions of this manual
CAUTION! Be careful with your operations.
With a dangerous voltage you can suffer
a dangerous electric shock when touching the wires!
Before you initial start-up, please make sure that there is no damage caused by transportation. Should there
be any, consult your dealer and do not use the system.
To maintain perfect condition and to ensure a safe operation, it is absolutely necessary for the user to follow
the safety instructions and warning notes written in this manual.
Please consider that damages caused by manual modifications to the system are not subject to warranty.
This system contains no user-serviceable parts. Refer servicing to qualified technicians only.
IMPORTANT:
The manufacturer will not accept liability for any resulting damages caused by the nonobservance of this manual or any unauthorized modification to the system.
Never let the power-cord come into contact with other cables! Handle the power-cord and all
connections with the mains with particular caution!
Never remove warning or informative labels from the unit.
Never use anything to cover the ground contact.
Do not insert objects into air vents.
Do not connect this system to a dimmerpack.
Do not switch the system on and off in short intervals, as this would reduce the system’s life.
Do not open the device and do not modify the device.
Do not open this device. Risk: hazardous radiation exposure.
Only use system indoor, avoid contact with water or other liquids.
Avoid flames and do not put close to flammable liquids or gases.
Always disconnect power from the mains, when system is not used. Only handle the power-cord by
the plug. Never pull out the plug by tugging the power-cord.
Make sure you don’t use the wrong kind of cables or defective cables.
Make sure that the signals into the mixer are balanced, otherwise hum could be created.
Make sure you use DI boxes to balance unbalanced signals; All incoming signals should be clear.
Make sure that the available voltage is not higher than stated on the rear panel.
2
Make sure that the power-cord is never crimped or damaged. Check the system and the powercord from time to time.
Make sure that the amplifier is turned down, before turning the power on or off. So you can avoid
supersonic frequencies, which could damage your speakers.
Don't put your equipment next to TV, radio, etc., because of interference or distortion.
If you connect other parts of the system, be careful of ground loops.
The best way to avoid ground loops is connecting the electrical system ground to one central point
("star" system). In this case the mixer can act as a central point.
Before changing the ground, always turn off your amplifier.
Please read this manual carefully and keep it for future reference. Remember that the amplifier has a
better value on the market, if you save the carton and all packing materials.
Always operate the unit with the AC ground wire connected to the electrical system ground.
Connecting amplifier outputs to oscilloscopes or other test equipment, while the amplifier is in
bridged mode, may damage both the amplifier and test equipment.
Do not drive the inputs with a signal level bigger, than required to drive the equipment to full output.
In system setup, the amplifier's output power must be 50%-100% more than the loaded loudspeakers
rated power.
Please turn off the power switch, when changing the power cord or signal cable, or select the input
mode switch.
In typical use, please set the volume at 0dB position.
Sometimes, when you want to send one signal to more than one amplifier, you should use a signal
distributor.
If your Dap Audio device fails to work properly, discontinue use immediately. Pack the unit securely
(preferably in the original packing material), and return it to your Dap Audio dealer for service.
Allow time to cool down, before cleaning or servicing.
For replacement use fuses of same type and rating only.
Prevent distortion! Make sure that all components connected to the DSA have sufficient power
ratings. Otherwise distortion will be generated because the components are operated at their limits.
Avoid ground loops! Always be sure to connect the power amps and the mixing console to the same
electrical circuit to ensure the same phase!
If system is dropped or struck, disconnect mains power supply immediately. Have a qualified
engineer inspect for safety before operating.
If the system has been exposed to drastic temperature fluctuation (e.g. after transportation), do not
switch it on immediately. The arising condensation water might damage your system. Leave the
system switched off until it has reached room temperature.
This device falls under protection class I. Therefore it is essential to connect the yellow/green
conductor to earth.
Repairs, servicing and electric connection must be carried out by a qualified technician.
WARRANTY: Till one year after date of purchase.
OPERATING DETERMINATIONS
If this system is operated in any other way, than the one described in this manual, the product may suffer
damages and the warranty becomes void.
Any other operation may lead to dangers like short-circuit, burns, electric shock, etc.
You endanger your own safety and the safety of others!
Improper installation can cause serious damage to people and property !
3
Description of the device
Features
The DSA-250, DSA-400, DSA-600, DSA-800 are professional high-end amplifiers :
• Power rating
DSA-250: RMS 2 X 25 0W (4Ω) , RMS 2 X 160W(8Ω)
DSA-400: RMS 2 X 42 0W (4Ω) , RMS 2 X 2 8 0 W (8 Ω)
DSA-600: RMS 2 X 600W[4Ω), RMS 2 X 4 0 0 W ( 8 Ω)
DSA-800: RMS 2 X 750W[4Ω), RMS 2 X 500W(8Ω)
• Features:
Active clip limiting
IMG impedance sensing
Auto ramp protection
Thermal protection
Short circuit protection
DC voltage protection
Subsonic protection
Switchable high/low/bypass filter: 120Hz
• Crosstalk 20Hz~20KHz, 8 Ohm: >60dB
• Frequency response: 20Hz~20KHz
• Sensitivity 8 Ohm stereo 1KHz: 1V
• S/N Ratio: >95 dB
• Damping Factor: >300
• Slewrate: >40V/uSec
• Total Harmonic distortion (THD): <0,1%
• Mode: Stereo/Parallel/Bridge
• Cooling: 2 speed fan
• Airflow: From back to front
• Input connector: Jack / XLR
• Output connector: Speakon
Fig. 1.
4
Frontpanel
Fig. 2.
1. Rack Mounting Holes.
Two front panel mounting holes are provided on each mounting flange,
2. Fan Outlet Grills.
DSA Series amplifiers are cooled by two, rear-mounted fans, Cool air flows over the heat sinks and
exhausts through the rear grills, Make sure these outlets remain clear to allow unrestricted air flow,
3. Input Attenuators.
Whenever possible, set attenuators fully clockwise to maintain optimum system headroom. The input
attenuator controls (one for channel A, one for channel B) located at the front panel adjust gain for their,
respective amplifier channels in all modes. See the specifications at the end of this manual for standard
voltage gain and input sensitivity information. When operating the amplifier in bridged mode, both
attenuators must be in the same position, so the speaker load will be equally shared between the
channels.
4. Protect LED.
Indicates that the channel is in Protect mode (speakers disconnected by output relay),
5. Clip LED.
Illuminates at the clipping threshold, Continuous illumination also indicates that ACL (Active Clip
Limiting) protection circuitry is engaged,
6. Level Indicator.
7. LCD display
Shows the working mode, protection status and temperature of the modules.etc,
8. Power LED.
Indicates that AC power is connected and the amplifier is turned on,
9. AC Power Switch
This is the main Power switch. Press to turn the amplifier on.
5
Backpanel
Fig. 3.
10. Balanced 1/4" (TRS) &XLR Input Connectors.
These connectors accept input signals on balanced TRS and XLR input plugs, See the figure at below
For information on polarity, Connectors for each channel are in parallel, The unused connectors may
be used for "loop through" connection to other amplifiers.
NOTE: Unbalanced "Tip/Sleeve" plugs may be used with the balanced TRS "Tip/Ring/Sleeve"
connectors. The "ring" terminal or negative input will be connected to ground internally. When
using three-pole ('stereo') TRS connectors, make sure that the ring connection is made either to
the cold (-) output of the source equipment or to ground. Incorrect connections may cause a
6dB loss in level.
11. Filter 120Hz select:
High-pass, Low-pass, By-pass
12. Mode Selection Switch.
This recessed, three-position switch configures the amplifier for Stereo,
Parallel or Bridged Mono Mode operation. Amplifiers are factory configured
for Stereo Mode. See Appendix D and the section on Mode Selection for more
information.
13. Grounding selector
To eliminate groundloops, put the selector in "OFF" position.
14. Lighting Switch
To switch the lighting on the front panel ON or OFF.
15. Output Connectors
Using speakon-type speaker cables, make connections to both the channel A and channel B
connectors for Stereo or Parallel mode, to channel A connector for Bridged mono mode.
16. Mains Cord
Mains voltage must be correct and same as that printed on the rear of the unit.
17. Power Fuse
The fuse shall, if needed, only be replaced by qualified personnel with the same type.
18. Air cooling windows
This part is the air cooling window. Don't obstruct it.
6
Operation
Installation
Remove all packing materials from the DSA. Check that all foam and plastic padding is removed.
Secure the equipment into a 19" rack. Connect all cables.
Connecting Power / Circuit Size Requirements.
DSA Series amplifier power requirements are rated at:
a)"idle"
b) 1/8th power ("typical" music conditions)
c) 1/3rd power ("continuous" music conditions)
d.] maximum rated power (circuit breaker limited).
The maximum power current draw rating Is limited only by the front panel circuit breaker. Consult the
specification In the Appendices section for figures on the current that each amplifier will demand.
Make sure the mains voltage Is correct and Is the same as that printed on the rear of the amplifier.
Damage caused by connecting the amplifier to Improper AC voltage Is not covered by any warranty.
Unless otherwise specified when ordered. DAP audio amplifiers shipped to customers are configured as
follows:
North America 120VAC/60Hz
Europe 230VAC/50Hz
Asia 220VAC /50Hz/60Hz
Australia 240VAC/50Hz
South America 120VAC/60Hz or 220VAC/50Hz
Japan 1OOVAC/50Hz
NOTE: Always turn off and disconnect the amplifier from mains voltage before making audio connections.
Also, as an extra precaution, have the attenuators turned down during power-up.
Cooling System and Requirements.
DSA Series amplifiers use a twin-tunnel forced-air cooling system to maintain a low, even operating
temperature. Drawn In by dual fans on the rear panel, air flows through the cooling fans of the channel heat
sinks (dissipating power transistor heat), then exhausts through the front panel slots. The "Intelligent" variablespeed DC fans are controlled by heat sink temperature sensing circuits. When the amplifier Is turned on, the
fans briefly "rev up," then slow to an Idle; this Indicates that the temperature sensing circuits are operating
normally. The fan speed Increases only as required by heat sink temperatures, keeping fan noise to a
minimum. Under extreme thermal load, the fans will force a very large volume of air through the heat sinks. If
either heat sink surpasses the maximum allowed temperature, the sensing circuit will open the output relay,
disconnecting the load from that channel. If the power transformer overheats, another sensing circuit opens
both channel output relays until the transformer cools to a safe temperature.
IMPORTANT: To ensure optimum cooling, periodically clean the amplifier fan filters (removable
without tools). Also make certain that there is enough space around the front of the amplifier to allow
the cooling air to escape. If the amplifier is rack-mounted, do not use doors or covers on the front of
the rack; the exhaust air must flow out without resistance. If the amplifiers are housed in racks
with closed backs, allow at least one (1) standard rack space of opening In the front of the rack for
every four amplifiers.
Connecting Inputs.
Use either the XLR or 1/4-inch input connectors on the rear to supply audio signals to your DAP Audio
Series amplifier. Both connectors accept balanced and unbalanced audio connections. (The
DSA Series amplifiers are configured standard with "Pin 2 hot" on XLR inputs. The unused connector can be
used to loop the audio Input to another amplifier Input. For more Information, see the section on Balanced
1/4" (TRS) & XLR Input Connector, Input XLR Polarity.
Connecting Outputs.
Speakers are connected using Speakon connectors. For More information, see Page 9.
7
Mode Selection
The three-position, recessed Mode Select switch (located on the rear panel) configures the amplifier for
either Stereo. Parallel or Bridged Mono Mode. Amplifiers are factory-configured for Stereo Mode.
Stereo Mode
In Stereo Mode, both channels operate independently, with their input attenuators controlling their
respective levels. Signal at Channel A's input produces output at Channel A's output while signal at Channel
B's input produces output at Channel B's output. Absolute minimum nominal load Impedance for stereo
operation Is 4 ohm per channel. Either the 1/4"(TRS) Input or the XLR Input may be used.
Parallel Mode
When set to Parallel Mode, a signal applied to Channel A's input will be amplified and appear at outputs
of both Channels A&B. Either the 1/4 " (TRS) input or the XLR input on Channel A may be used.
Bridged Mono Mode
Bridged Mono Mode straps both amplifier channels together to make a very powerful, single-channel
monaural amplifier. One channel "pushes" and the other "pulls" equally, doubling the power over that of
either channel alone. Signal is applied to the Channel A input only. Both attenuators are used to control
signal level; in addition, both must be adjusted to the same setting. Only channel A 1/4"(TRS) or XLR input
may be used.
NOTE: The channel B Input connectors {XLR and/ or TRS} maybe used to "loop thru" the channel A signal
When in parallel or bridged mono mode.
Use extreme caution when operating the amplifier In Bridged Mono Mode. Never ground either side of
the speaker cable when the amplifier Is in Bridged Mono Mode; both sides are "hot. "If an output patch
panel is used, all connections must be Isolated from each other and from the panel. The absolute minimum
nominal load Impedance in the Bridged Mono Mode Is 8 ohms, which Is the equivalent to driving both
channels separately at 4 ohms. Driving bridged loads of less than the recommended minimums will activate
the IGM circuitry, resulting in a loss of power, and may also lead to a thermal protect condition. See figures
on pages 10 &11 showing output connection information.
Connecting amplifier outputs to oscilloscopes or other test equipment while the
amplifier is in bridged mode may damage both the amplifier and test equipment!
8
9
Connection Cables
Take care of the connector cables, always holding them by the connectors and avoiding knots and twists
when coiling them: This gives the advantage of increasing their life and reliability, which is always to your
advantage.
Periodically check that your cables are in good condition, that they are correctly wired and that all their
contacts are in good condition: a great number of problems (faulty contacts, ground hum, discharges, etc.)
are caused entirely by using unsuitable or faulty cables.
Headphones
Unbalanced mono 1/4” jack plug
10
Balanced mono 1/4” jack plug
Compensation of interference with balanced connections
Maintenance
The DAP Audio DSA requires almost no maintenance. However, you should keep the unit clean. Disconnect
the mains power supply, and then wipe the cover with a damp cloth. Do not immerse in liquid. Do not use
alcohol or solvents.
Keep connections clean. Disconnect electric power, and then wipe the DMX and audio connections with a
damp cloth. Make sure connections are thoroughly dry before linking equipment or supplying electric
power.
Replacing a Fuse
Power surges, short-circuit or inappropriate electrical power supply may cause a fuse to burn out. If the fuse
burns out, the product will not function whatsoever. If this happens, follow the directions below to do so.
1. Unplug the unit from electric power source.
2. Insert a screwdriver into the slot in the fuse cover. Turn the screwdriver to the left, at the same time gently
push a bit (Turn and Push). The fuse will come out.
3. Remove the broken fuse. If brown or unclear, it is burned out.
4. Insert the replacement fuse into the holder where the old fuse was. Reinsert the fuse cover.
Be sure to use a fuse of the same type and specification. See the product specification label for details.
Troubleshooting
DAP Audio DSA-series Amplifiers.
This troubleshooting guide is meant to help solve simple problems. If a problem occurs, carry out the steps
below in sequence until a solution is found. Once the unit operates properly, do not carry out following steps.
1. If the device does not operate properly, unplug the device.
2. Check the fuse, power from the wall, all cables, etc.
3. If all of the above appears to be O.K., plug the unit in again.
4. If you are unable to determine the cause of the problem, do not open the amplifier, as this may damage
the unit and the warranty will become void.
5. Return the amplifier to your Dap Audio dealer.
11
Product Specifications
Specification
DSA-250
8 Ω Stereo Power (RMS)
4 Ω Stereo Power (RMS)
8 Ω Bridge Power (RMS)
Frequency Response
TourClass Protection
160W x 2
250W x 2
500W x 1
THD into 4Ω, 1 KHz
SMPER IMD
Slew Rate
Damping Factor
Input CMRR (@1Khz)
Input Sensitivity (@8Ω)
Input Impedance
Hum and Noise
Crosstalk
Class
Input Connectors (per
channel)
Output connectors (per
channel)
Power Supply
Max. Current Draw
220V
Cooling
Controls
Indicators (per channel)
Construction
Dimensions (LxWxH)
Gross Weight
Net Weight
DSA-400
DSA-600
280W x 2
400W x 2
420W x 2
600W x 2
840W x 1
1200W x 1
20 Hz -20KHz: + 0.1 / - 1 dB (1W / 8 Ω)
DSA-800
500W x 2
750W x 2
1500W x 1
ACL, IGM, Autoramp, DC voltage, turn-on/off transient, current inrush,
sub/ultrasonic input
<0.1%
<0.01% @8 Ω
into(50Hz &
7 Khz)
<0.01% @18 Ω
into(50Hz &
7 Khz)
<0.01% @8 Ω
into(50Hz &
7 Khz)
<0.01% @8 Ω
into(50Hz &
7 Khz)
40V/ µs
300:1,1 [email protected]Ω
>60dB
1V for rated
power
40V/ µs
300:1,1 [email protected]Ω
>60dB
1V for rated
power
40V/ µs
300:1,1 [email protected]Ω
>60dB
1V for rated
power
40V/ µs
300:1,1 [email protected]Ω
>60dB
1V for rated
power
20KΩ, balanced
10KΩ, unbalanced
20KΩ, balanced
10KΩ, unbalanced
20KΩ, balanced
10KΩ, unbalanced
20KΩ, balanced
10KΩ, unbalanced
95dB
>60dB
B
95dB
95dB
>60dB
>60dB
B
B
Female XLR (pin 2+), TRS Combo (tip +)
95dB
>60dB
B
Speakon connectors
8A
230 V / 50 – 60 Hz
7.5 A
10.5A
15 A
2 rear-mounted two-speed fans
2 front attenuators, power switch, signal ground lift & mode switches, filter switch
16.5 Kg
12.5 Kg
PROTECT LED, CLIP LED, SIGNAL LED, POWER LED
Steel chassis, 16 gauge, double thickness in rack areas
482x360x 88 mm
18 Kg
19 Kg
20.7 Kg
14 Kg
15 Kg
16.7 Kg
Design and product specifications are subject to change without prior notice.
Website: www.Highlite.nl
Email: [email protected]
12
DSA Block Diagram
13
Wire Gauge Chart (Metric)
Stranded Cable
Length (m)
2
5
10
30
Wire Gauge
Power Loss %
Power Loss %
Power Loss %
0,3
0,5
0,75
1,5
2,5
4
0,5
0,75
1,5
2,5
4
6
0,5
0,75
1,5
2,5
4
6
0,75
1,5
2,5
4
6
10
(8 ohm load)
2,9
1,74
1,16
0,58
0,35
0,22
4,3
2,9
1,45
0,87
0,55
0,37
8,24
5,6
2,9
1,74
1,09
0,73
15,5
8,2
5,1
3,2
2,2
1,31
(4 ohm load)
5,6
3,4
2,3
1,16
0,7
0,44
8,2
5,6
2,9
1,74
1,09
0,73
15,5
10,8
5,6
2,9
1,74
1,09
0,73
15,5
9,8
6,3
4,3
2,6
(2 ohm load)
10,8
6,7
4,5
2,3
1,39
0,87
15,5
10,8
5,6
3,4
2,2
1,45
28
19,9
10,8
6,7
4,3
2,9
45
28
18,2
12
8,2
5,1
14
Wire Gauge Chart (AWG: American Wire Gauge)
Stranded Cable
Length(ft)
5
10
40
80
Wire Gauge
Power Loss %
Power Loss %
Power Loss %
(AWG)
18
16
14
12
10
18
16
14
12
10
18
16
14
12
10
8
18
16
14
12
10
(8 ohm load)
0.81
0.51
0.32
0.2
0.128
1.61
1.02
0.64
0.4
0.25
6.2
4
2.5
1.6
1.01
0.6
11.9
7.7
5
3.2
2
(4 ohm load)
1.61
1.02
0.64
0.4
0.25
3.2
2
1.28
0.8
0.51
11.9
7.7
5
3.2
2
1.2
22
14.6
9.6
6.2
4
(2 ohm load)
3.2
2
1.28
0.8
0.51
6.2
4
2.5
1.6
1.01
22
14.6
9.6
6.2
4
2.4
37
26
17.8
11.8
7.7
15
2007 Dap Audio.
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