DAPAudio CA-4500 User manual

CA-4500 V1
Highlite International B.V. –Vestastraat 2 –6468 EX –Kerkrade –the Netherlands
Ordercode: D4515
MANUAL
ENGLISH

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Ordercode: D4515
CA-4500
Table of contents
Warning ...............................................................................................................................................................................2
Safety Instructions .........................................................................................................................................................2
Operating Determinations ..........................................................................................................................................4
Return Procedure..........................................................................................................................................................4
Claims..............................................................................................................................................................................4
Description of the device.................................................................................................................................................5
Overview ........................................................................................................................................................................5
Frontside..........................................................................................................................................................................6
Backside .........................................................................................................................................................................6
Installation...........................................................................................................................................................................6
Set Up and Operation .......................................................................................................................................................7
NORMAL .........................................................................................................................................................................7
CH12 BRI..........................................................................................................................................................................8
CH34 BRI..........................................................................................................................................................................9
CH12/34 BRI..................................................................................................................................................................10
LINK ................................................................................................................................................................................10
Operations ........................................................................................................................................................................11
Gain Adjustment .........................................................................................................................................................11
Main Menu Options....................................................................................................................................................11
1. Routing...................................................................................................................................................................12
2. Mute .......................................................................................................................................................................12
3. Delay ......................................................................................................................................................................13
4. Invert ......................................................................................................................................................................13
5. EQ Setting..............................................................................................................................................................14
5.1. HP and LP Filters ................................................................................................................................................15
5.2. Allbypass ............................................................................................................................................................15
6. Compressor...........................................................................................................................................................15
7. Preset......................................................................................................................................................................16
7.1. Save ....................................................................................................................................................................16
7.2. Load ....................................................................................................................................................................17
8. Noisegate..............................................................................................................................................................18
9. System ....................................................................................................................................................................18
9.1. Workmode .........................................................................................................................................................19
9.2. Pin ........................................................................................................................................................................19
9.3. Amp Stat ............................................................................................................................................................19
9.4. Name ..................................................................................................................................................................19
9.5. Firmware.............................................................................................................................................................19
10. Exit.........................................................................................................................................................................19
Connection Cables .........................................................................................................................................................20
Maintenance....................................................................................................................................................................20
Replacing the Fuse.....................................................................................................................................................20
Troubleshooting ...............................................................................................................................................................21
Product Specifications....................................................................................................................................................21
Dimensions........................................................................................................................................................................22

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Ordercode: D4515
CA-4500
Warning
Unpacking Instructions
Immediately upon receiving this product, carefully unpack the carton and check the contents to ensure
that all parts are present and have been received in good condition. Notify the dealer immediately and
retain packing material for inspection if any parts appear damaged from shipping or the carton itself
shows signs of mishandling. Save the carton and all packing materials. In the event that a fixture must be
returned to the factory, it is important that the fixture be returned in the original factory box and packing.
Your shipment includes:
●DAP Audio CA-4500
●Schuko power cable (1,5 m)
●User manual
Safety Instructions
Every person involved with the installation, operation and maintenance of this system has to:
●be qualified
●follow the instructions of this manual
Before the 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 non-observance of
this manual or any unauthorized modification to the system.
●Always let the device cool down before cleaning or servicing.
●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.
●Always operate the unit with the AC ground wire connected to the electrical system ground.
●Avoid flames and do not put close to flammable liquids or gases.

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●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!
●Before changing the ground, always turn off your amplifier.
●Connecting amplifier outputs to oscilloscopes or other test equipment, while the amplifier is in bridge
mode, may damage both, the amplifier and test equipment.
●Do not connect this device to a dimmer pack.
●Do not drive the inputs with a signal level higher than required to drive the equipment to full output.
●Do not insert objects into air vents.
●Do not open the device and do not modify the device.
●Do not open this device. Risk: hazardous radiation exposure.
●Do not switch the system on and off in short intervals, as this would reduce the system’s life.
●Do not put your equipment next to TV, radio, etc., because of interference or distortion.
●If device 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.
●If you connect other parts of the system, beware ground loops.
●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.
●In system setup, the amplifier's output power must be 50-100% higher than the loaded loudspeakers’
rated power.
●In normal use, please set the volume to 0dB position.
●Make sure that the amplifier is turned down, before turning the power on or off. In this way you can
avoid supersonic frequencies, which could damage your speakers.
●Make sure that the available voltage is not higher than stated on the rear panel.
●Make sure that the power cord is never crimped or damaged. Check the device and the power
cord from time to time.
●Make sure that the signals coming into the mixer are balanced, otherwise hum could be created.
●Make sure you do not use the wrong kind of cables or defective cables.
●Make sure you use DI boxes to balance unbalanced signals; All incoming signals should be clear
●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.
●Only use device indoors, avoid contact with water or other liquids.
●Please read this manual carefully and keep it for future reference.
●Please turn off the power switch, when replacing the power cord, signal cable or selecting the input
mode switch.
●Prevent distortion! Make sure that all components connected to the device have sufficient power
ratings. Otherwise, distortion will be generated because the components are operated at their limits.
●Sometimes, when you want to send one signal to more than one amplifier, you should use a signal
distributor.
●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.
●This device falls under protection class I. Therefore it is essential to connect the yellow/green
conductor to earth.
●The user is responsible for correct positioning and operating of the CA amplifier. The manufacturer
will not accept liability for damages caused by the misuse or incorrect installation of this device.
●Repairs, servicing and electric connection must be carried out by a qualified technician.
●WARRANTY: Till one year after date of purchase.

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Operating Determinations
This system is not designed for permanent operation. Consistent operation breaks will ensure that the
system will serve you for a long time without defects.
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 !
Return Procedure
Returned merchandise must be sent prepaid and in the original packing, call tags will not be issued.
Package must be clearly labeled with a Return Authorization Number (RMA number). Products returned
without an RMA number will be refused. Highlite will not accept the returned goods or any responsibility.
Call Highlite 0031-455667723 or mail aftersal[email protected] and request an RMA prior to shipping the
fixture. Be prepared to provide the model number, serial number and a brief description of the cause for
the return. Be sure to properly pack fixture, any shipping damage resulting from inadequate packaging is
the customer’s responsibility. Highlite reserves the right to use its own discretion to repair or replace
product(s). As a suggestion, proper UPS packing or double-boxing is always a safe method to use.
Note: If you are given an RMA number, please include the following information on a piece of paper
inside the box:
01) Your name
02) Your address
03) Your phone number
04) A brief description of the symptoms
Claims
The client has the obligation to check the delivered goods immediately upon delivery for any short-
comings and/or visible defects, or perform this check after our announcement that the goods are at their
disposal. Damage incurred in shipping is the responsibility of the shipper; therefore the damage must be
reported to the carrier upon receipt of merchandise.
It is the customer's responsibility to notify and submit claims with the shipper in the event that a device is
damaged due to shipping. Transportation damage has to be reported to us within one day after receipt
of the delivery.
Any return shipment has to be made post-paid at all times. Return shipments must be accompanied with
a letter defining the reason for return shipment. Non-prepaid return shipments will be refused, unless
otherwise agreed in writing.
Complaints against us must be made known in writing or by fax within 10 working days after receipt of the
invoice. After this period complaints will not be handled anymore.
Complaints will only then be considered if the client has so far complied with all parts of the agreement,
regardless of the agreement of which the obligation is resulting.

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CA-4500
Description of the device
Features
The CA-4500 is a 4-channel DSP-powered amplifier. It can be easily configured by means of the OLED
display or the PC software. It is equipped with crossovers, a delay, a limiter and an EQ.
●Input voltage: 210-240V AC, 50/60Hz
●Power consumption: 1100W
●4CH 2Ohm: Not allowed
●4CH 4Ohm: 4 x 500W RMS
●4CH 8Ohm: 4 x 250W RMS
●Bridge 2Ohm: Not allowed
●Bridge 4Ohm: Not allowed
●Bridge 8Ohm: 2 x 1000W RMS
●Frequency response: 20Hz –20kHz, +0/-1dB
●THD: <0.15%
●S/N rate: >96dB A-weighted
●Crosstalk: >60dB
●Damping factor: >180
●Gain: 34dB
●Input sensitivity: 0,9-1,1V (+/-1dBv)
●Input impedance: 20kOhm balanced, 10kOhm unbalanced
●Output modes: 4-channel, Stereo, Bridge
●Amp technology: Class D
●Power supply: SMPS
●Protection: Clip Limiter, Short circuit, Overheat, Overload, Ultrasonic, DC voltage, Soft start
●Cooling: Forced-air by axial fan
●Airflow: Front to back
●Installation depth: 285 mm (excl. conn.)
●Input connectors: 3-pin XLR IN
●Output connectors: Speakon OUT
●Power connector: IEC
●Fuse: 10A/250V
●Dimensions:
483 x 285 x 44,5 mm (LxWxH)
19” x 1HE
●Weight: 5,9 kg
Overview
Fig. 01

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Frontside
Fig. 02
01) Power button ON/OFF
Press the button to turn the device on/off.
02) OLED display
03) Menu control
04) USB B connector
Backside
Fig. 03
05) CH A-D, 3-pin XLR connector IN (unbalanced/balanced)
Connect low impedance equipment with balanced/unbalanced line level outputs.
06) CH 1-4, Speakon speaker connector OUT
Connect the device to speakers.
07) Air exhaust
Do not block the air exhaust as it may cause overheating and/or other serious damage.
08) 210-240V AC, IEC power connector IN + Fuse 10A/250V
Installation
Remove all packing materials from the CA-4500. Check if all foam and plastic padding is removed.
Fit the equipment to a 19" rack. Connect all cables.
Do not supply power before the whole system is set up and connected properly.
Always disconnect from electric mains power supply before cleaning or servicing.
Damages caused by non-observance are not subject to warranty.

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Set Up and Operation
Before plugging the unit in, always make sure that the power supply matches the product specification
voltage. Do not attempt to operate a 120V specification product on 240V power, or vice versa.
Install this device on a flat surface, not bending or curved.
Do not supply power before all components of the system are set up and connected properly.
NORMAL
All 4 outputs function independently.
Fig. 04

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CA-4500
CH12 BRI
Outputs 1 and 2 are bridged and outputs 3 and 4 function independently.
Fig. 05

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CA-4500
CH34 BRI
Outputs 3 and 4 are bridged and outputs 1 and 2 function independently.
Fig. 06

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CA-4500
CH12/34 BRI
Outputs 1 and 2 are bridged. Outputs 3 and 4 are bridged.
Fig. 07
LINK
Outputs 1-4 are linked. For example, if you adjust gain of the output 1, then gain of the outputs 2, 3 and 4
will be adjusted automatically.

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Operations
Gain Adjustment
01) Upon start-up, the device will show the gain settings of the currently active setup.
02) It is possible to select the output channels and adjust their gain levels. Turn the menu control (03) to
select CH1-4 and press the menu control (03) to start editing.
03) Turn the menu control (03) to the left/right in order to decrease/increase the gain level. The
adjustment range is from MUTE to +10dB.
04) Press the menu control (03) to save your settings.
05) Repeat steps 2-4 in order to adjust the gain level of the remaining output channels.
Main Menu Options
01) Once you have set the gain levels, turn the menu control (03) to select MENU and press the menu
control (03) to enter main menu. The display will show:
02) Turn the menu control (03) to select one of the 10 menus:
●ROUTING
●MUTE
●DELAY
●INVERT
●EQ SETTING
●COMPRESSOR
●PRESET
●NOISEGATE
●SYSTEM
●EXIT
03) Press the menu control (03) to enter the desired menu.

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1. Routing
In this menu, it is possible to route the 6 input channels (A, B, C, D, A+B and C+D) to the 4 output channels
(1-4).
01) Turn the menu control (03) to select the desired output channel (1-4). Press the menu control (03) to
confirm your choice.
02) Turn the menu control (03) to assign the desired input channel (A, B, C, D, A+B or C+D) to the
previously selected output channel.
03) Press the menu control (03) to save your settings.
04) Repeat steps 1-3 to route the remaining channels.
05) Turn the menu control (03) to select EXIT and press the menu control (03) to return to main menu.
2. Mute
In this menu, it is possible to mute the 4 output channels (1-4).
01) Turn the menu control (03) to select the desired output channel (1-4). Press the menu control (03) to
confirm your choice.
02) Turn the menu control (03) to mute/unmute the selected output channel. Press the menu control (03)
to save your settings.
03) Repeat steps 1-2 to mute/unmute the remaining channels.
04) For example, if you have muted CH1 and CH3, the display will show:
05) Turn the menu control (03) to select EXIT and press the menu control (03) to return to main menu.

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3. Delay
In this menu, it is possible to set the delay time of the 4 output channels (1-4).
01) Turn the menu control (03) to select the desired output channel (1-4). Press the menu control (03) to
confirm your choice.
02) Turn the menu control (03) to set the delay time of the selected output channel. The delay distance
(in meters/feet) will adjust accordingly. Press the menu control (03) to save your settings.
03) Repeat steps 1-2 to set the delay time of the remaining channels.
04) Turn the menu control (03) to select EXIT and press the menu control (03) to return to main menu.
4. Invert
In this menu, it is possible to invert the 4 output channels (1-4).
01) Turn the menu control (03) to select the desired output channel (1-4). Press the menu control (03) to
confirm your choice.
02) Turn the menu control (03) to invert the selected output channel. Press the menu control (03) to save
your settings.
03) Repeat steps 1-2 to invert the remaining channels.
04) For example, if you have inverted CH1 and CH3, the display will show:
05) Turn the menu control (03) to select EXIT and press the menu control (03) to return to main menu.

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5. EQ Setting
In this menu, it is possible to set EQ parameters of the 4 output channels (1-4). With those parameters you
can correct frequency characteristics by adjusting the frequency response curve. The CA-4500 is
equipped with an 8-band EQ, a low-pass filter (LP), a high-pass filter (HP) and a bypass (ALLBYPASS).
Adjust the EQ setup by setting the FREQ, Q, GAIN and BP values.
01) Turn the menu control (03) to select the desired output channel (1-4). Press the menu control (03) to
confirm your choice. The display will show:
02) Turn the menu control (03) to select one of the 8 EQ bands. Press the menu control (03) to confirm
your choice. The display will show:
03) Turn the menu control (03) to select one of the 4 options:
●FREQ: The center frequency is the middle of the pass-band between the lower and upper cutoff
frequencies, defining the limits of the band.
●Q: The ratio of the center frequency to the bandwidth. If the center frequency is constant, the
bandwidth is inversely proportional to the Q. It means that if you raise the Q, the bandwidth will
be narrowed.
●GAIN: Set the gain at the center frequency for the Low/Low-mid/High-mid/High-band
separately. When gain is set to 0dB, the center frequency and Q are invalid.
●BP: Set BP to bypass all signal to the next block. When BP is set to N (No), the bypass function is
not active and signals will be processed by the EQ and then will flow to the next block. When BP
is set to Y (Yes), signals will be bypassed to the next block.
04) Press the menu control (03) to start editing. Turn the menu control (03) to adjust the settings.
05) Press the menu control (03) to save your settings.
06) In order to be able to adjust the remaining settings, always turn the menu control (03) to select the
arrow:
07) Press the menu control (03) to return to the previous menu.
08) Repeat steps 2-7 to adjust the remaining settings.

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5.1. HP and LP Filters
Apart from the 8 EQ bands, you can also adjust the FREQ and Q of the HP (high-pass filter) and the LP
(low-pass filter).
01) If the HP is set to its minimum value, the HP filter is OFF. If the LP is set to its maximum value, the LP filter
is OFF.
02) When adjusting the Q of the LP and HP, you can choose one of the following crossover patterns:
BPSS (bypass), BW6, BE6, BW12, BE12, LR12, BW18, BE18, BW24, BE24, LR24, BW30, BE30, BW36, BE36,
LR36, BW42, BE42, BW48, BE48 and LR48.
Note: BW stands for Butterworth filters. BE stands for Bessel filters. LR stands for Linkwitz-Riley filters.
5.2. Allbypass
01) Turn the menu control (03) to select ALLBYPASS. Press the menu control (03) to start editing.
02) Turn the menu control (03) to select N or Y and press the menu control (03) to confirm your choice.
03) If set to N, the device will use the EQ settings. If set to Y, the EQ settings will not be used and it will not
be possible to adjust any EQ settings.
04) Turn the menu control (03) to select EXIT and press the menu control (03) to return to the previous
menu.
05) Again, turn the menu control (03) to select EXIT and press the menu control (03) to return to main
menu.
6. Compressor
In this menu, it is possible to set the compression parameters of the 4 output channels (1-4).
01) Turn the menu control (03) to select the desired output channel (1-4). Press the menu control (03) to
confirm your choice.
02) Turn the menu control (03) to select one of the 5 options:
●THRES (compression threshold for the selected channel): If the amplitude of an audio signal
exceeds a certain threshold, the compressor will reduce the signal level, using the preset ratio. If
the amplitude of an audio signal is lower than the preset threshold, the compressor will not be
activated and the signal will flow directly to the next block.
●RATIO (compression ratio for the selected channel): The ratio determines the ratio of gain
reduction. For example, a ratio of 4:1 means that if the input level exceeds the threshold by 4dB,
the output signal will exceed the threshold by 1dB.
●ATTACK (compressor’s attack setting for the selected channel): It is the period in which the
compressor reduces gain to reach the level determined by RATIO.
●RELEASE (compressor release time): It determines the amount of time that it takes for the
compressor to return to its initial gain, once the signal level drops below the threshold.
●BYPASS: If set to YES, the compressor is OFF. If set to NO, the compressor is ON.
03) Press the menu control (03) to start editing. Turnthe menu control (03) to adjust the settings.
04) Press the menu control (03) to save your settings.
05) Repeat steps 2-4 to adjust the remaining settings.
06) Turn the menu control (03) to select EXIT and press the menu control (03) to return to step 1.
07) Again, turn the menu control (03) to select EXIT and press the menu control (03) to return to main
menu.

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7. Preset
In this menu, it is possible to save new setups and load the existing ones.
01) Turn the menu control (03) to select one of the 3 options:
●SAVE: Save the newly created setups.
●LOAD: Load the existing setups.
●EXIT: Press the menu control (03) to return to main menu.
02) Press the menu control (03) to confirm your choice.
7.1. Save
01) The display will show:
02) Turn the menu control (03) to select the desired slot. Press the menu control (03) to confirm your
choice. For example, if you have selected USER PRESET3, the display will show:
03) Now it is possible to edit your setup’s name. Turn the menu control (03) to select the character which
you want to edit.
04) Press the menu control (03) to start editing. The selected character will light yellow.
05) Turn the menu control (03) to change the character.
06) Press the menu control (03) to confirm your choice and replace the character.
07) Repeat steps 3-6 to adjust the remaining characters.

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08) Once you have edited all the characters, turn the menu control (03) to the right in order to select
SAVE and press the menu control (03) to save your setup. The display will show:
09) Turn the menu control (03) to select SAVE (save a setup) or CANCEL (cancel and return to the
previous menu) and press the menu control (03) to confirm your choice.
10) Now,turn the menu control (03) to the right to select EXIT and press the menu control (03) to return to
the previous menu.
7.2. Load
01) The display will show:
02) Turn the menu control (03) to select the desired setup. Press the menu control (03) to confirm your
choice. The display will show:
03) Turn the menu control (03) to select LOAD (load a setup) or CANCEL (cancel and return to the
previous menu) and press the menu control (03) to confirm your choice.
04) Now, turn the menu control (03) to the right to select EXIT and press the menu control (03) to return to
the previous menu.

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8. Noisegate
In this menu, it is possible to set the noise gate parameters of the 4 output channels (1-4).
01) Turn the menu control (03) to select the desired output channel (1-4). Press the menu control (03) to
confirm your choice.
02) Turn the menu control (03) to select one of the 2 options:
●THRES (noise gate threshold for the selected channel): If an audio signal level is lower than the
preset threshold, the noise gate will block that audio signal.
●BYPASS: If set to YES, the noise gate is OFF. If set to NO, the noise gate is ON.
03) Press the menu control (03) to start editing. Turn the menu control (03) to adjust the settings.
04) Press the menu control (03) to save your settings.
05) Repeat steps 2-4 to adjust the remaining settings.
06) Turn the menu control (03) to select EXIT and press the menu control (03) to return to step 1.
07) Again, turn the menu control (03) to select EXIT and press the menu control (03) to return to main
menu.
9. System
In this menu, it is possible to set the system settings.
01) Turn the menu control (03) to select one of the 5 options:
●WORKMODE (NORMAL, CH12 BRI, CH34 BRI, CH12/34 BRI, LINK)
●PIN (ON, OFF, EDIT)
●AMP STAT
●NAME
●FIRMWARE
02) Press the menu control (03) to start editing. Turn the menu control (03) to adjust the settings.
03) Press the menu control (03) to save your settings.
04) Repeat steps 1-3 to adjust the remaining settings.
05) Once you have adjusted the settings, turn the menu control (03) to select EXIT and press the menu
control (03) to return to main menu.

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9.1. Workmode
In this menu, it is possible to choose the desired operation mode.
01) The available modes are:
●NORMAL: All 4 outputs function independently.
●CH12 BRI: Outputs 1 and 2 are bridged and outputs 3 and 4 function independently.
●CH34 BRI: Outputs 3 and 4 are bridged and outputs 1 and 2 function independently.
●CH12/34 BRI: Outputs 1 and 2 are bridged. Outputs 3 and 4 are bridged.
●LINK: Outputs 1-4 are linked. For example, if you adjust gain of the output 1, then gain of the
outputs 2, 3 and 4 will be adjusted automatically.
9.2. Pin
In this menu, it is possible to set the PIN code which will be needed to unlock the device upon start-up.
01) Turn the menu control (03) to select one of the 3 options:
●ON: The PIN code is needed upon start-up.
●OFF: No PIN code is needed upon start-up.
●EDIT: Edit the PIN code.
02) Press the menu control (03) to confirm your choice.
03) If you have chosen EDIT, you can start editing the PIN code. The display will show:
04) Turn the menu control (03) to select the desired character for the first digit. Press the menu control
(03) to confirm your choice.
05) Repeat step 4 in order to select characters for the second, third and fourth digit.
06) Once you have confirmed the fourth digit, the display will return to the previous menu.
9.3. Amp Stat
In this menu, it is possible to monitor the current status of the device. In normal conditions, the display
should read NORMAL.
9.4. Name
In this menu, it is possible to change the name of the device.
01) The display will show:
02) Now you can change the device’s name (a maximum of 10 digits). Turn the menu control (03) to
select the desired character for the first digit. Press the menu control (03) to confirm your choice.
03) Repeat step 2 in order to select characters for the remaining 9 digits.
04) Once you have confirmed the tenth digit, the display will return to the previous menu.
9.5. Firmware
In this menu, it is possible to view the currently installed software’s version.
10. Exit
Press the menu control (03) to return to the gain adjustment menu (see Gain Adjustment, page 11).