Soundchoice PROAudio C4 Series User manual

INSTALLATION AND OPERATION MANUAL
C4 Series Commercial
Class-D Four Channel Amplifier
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1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that
produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. If the provided plug does not fit into your outlet, consult an
electrician for replacement.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit
from the apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used,
use caution when moving the cart/apparatus combination to avoid injury.
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing toqualified service personnel. Servicing is required when theapparatus has been damaged in any way, such
as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been
exposed to rain or moisture, does not operate normally, or has been dropped.
15. This appliance shall not be exposed to water and that no object filled with liquid such as vases shall be placed on the apparatus.
16. Plug this apparatus to the proper wall outlet and make the plug easily removable.
17. WARNING: To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.
18. An appliance with a protective earth terminal should be connected to a mains outlet with a protective earth connection.
Important Safety Information
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WARNING!
TO PREVENT FIRE OR SHOCK HAZARD, DO NOT USE THE PLUG WITH
AN EXTENSION CORD, RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES
CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE.
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE
THIS APPLIANCE TO RAIN OR MOISTURE.
TO PREVENT ELECTRICAL SHOC
K, MATCH WIDE BLADE PLUG TO WIDE SLOT, FULLY INSERT.
Safety Warning
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Front Page ------------------------------------------------------------------------------------------------------------------ 1
Important Safety Information------------------------------------------------------------------------------------------------------------2
Safety Warning----------------------------------------------------------------------------------------------------------------------------- 3
Contents ------------------------------------------------------------------------------------------------------------------------------------ 4
Introduction-------------------------------------------------------------------------------------------------------------------------------- 5
Front Panel --------------------------------------------------------------------------------------------------------------------------------- 6
Rear Panel ---------------------------------------------------------------------------------------------------------------------------------- 7
Speaker Connection -----------------------------------------------------------------------------------------------------------------------8
Block Diagram------------------------------------------------------------------------------------------------------------------------------ 9
Specification ------------------------------------------------------------------------------------------------------------------------------10
Service and Warranty -------------------------------------------------------------------------------------------------------------------- 11
Contents
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Features:
Switching power technology digital power amplifier
Class-D PA power amplifier with minimum power consumption
Less rack space and less heat generation
Four channel power amplifier into 19” rack mount unit
Rated power output at 120W, 240W, 350W to 500W by four channels
Four channel separate speaker outputs 8Ω/100V
Balanced inputsby phoenix connectors
Each input with separate gain control.
Each channel with high-cut filter.
Built-inauto standby feature to save power consumption
Separate four channel indicators for protection, clip, input and output
Complete short circuit, overload, high temp, clip and DC protection
Wide AC input from 110V to 230V
Description:
The C4 series digital class-D power amplifier uses switching
power technology, which features of minimum power
consumption and much higher efficiency up to 85%, moreover it
helps to save installation rack space, generate less heat so as to
extend its performance life span as aresult.
The digital class-D amplifiers are of rated power output at 120W,
to 500W by four channels, so it could be used as four zone
multiple sources public address system at minimum cost. The
versatile loudspeaker outputs of both high impedance 100V &low
impedance 8ohms gives flexibility for installation.
There are four balanced inputs by phoenix connector for each
channel with gain control. Four separate zone speaker outputs both
by 100V & 8ohms. The built-in four channel separate high-pass
filters can be enabled or disabled through the dip switch settings.
Automatic standby enable after no detection of signal input for
one minute, immediately start when signal is detected. Visual
working status indicators include protection, clip, input and
output for easy supervision. With complete short circuit,
overload, high temp, clip and DC protection.
Wide AC power supply of 230V, thus it support worldwide sound
system installation.
Introduction
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1. PROT
Protection indicator will light orange once the amplifier comes into protection status. The protection maybe resulted from speaker
line short circuit, speaker line open circuit, amplifier overload and working temperature over 55℃, this indicator give visually
guidance. The light will turn off once fault is repaired. There are four separate protection indicators one for each channel.
2. CLIP
Clip indicator will light red once the input or output is too high. There are four separate CLIP indicators one for each channel.
3. INPUT
Input indicator will light green once there is any input signal detected. There are four separate input indicators one for each channel.
4. OUPUT
Output indicator will light green once there is output signal detected. There are four separate output indicators one for each channel.
5. POWER
Power indicator will be light blue once the unit has been powered by AC or DC.
6. POWER SWITCH
PPower switch used to power on and power off the equipment.
Front Panel
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1. AC POWER CORD
AC power cord for input from 110V to 230V, the power cord itself is auto-switching.
2. 100V SPEAKER OUTPUT
The speaker outputs shall be connected to 100V line loudspeakers, the negative end to the speaker negative and the positive end to
the speaker positive. These speaker output are supplied using phoenix connectors.
Never mixed the negative end and the positive, which will cause the short circuit protection.
Never connection the low impedance loudspeaker to the 100V outputs, this will damage the speaker or have heavy distortion.
LINE INPUT
The line input support both balanced or unbalanced inputs from audio sources or mixer, these input are by phoenix connectors. There
are four channel separate line inputs which could be managed respectively. (NOTICE: For unbalanced line input, “-“ and “GND” shall
be tied together)
3. 8Ω SPEAKER OUTPUT
The speaker outputs shall be connected to low impedance 8Ω loudspeakers, the negative end to the speaker negative and the
positive end to the speaker positive. These speaker output are supplied using phoenix connectors.
Never mixed the negative end and the positive, which will cause the short circuit protection.
Never connect the 100V line loudspeaker to the 8Ω output, this will burn the speaker or have heavy distortion.
4. GAIN CONTROL
The gain control is used to adjustment the input sensitivity from various inputs so as to have the best response.
5. HIGH PASS FILTER
The high pass filter function will be enabled or disabled by pre-setting the dipswitches. Separate high pass filter dipswitches for each
channel.
6. AUTO-STANDBY
The Auto standby function will be enabled or disabled by pre-setting the dipswitches. The enabled auto-standby function will
automatically go into standby once there is no input detected for 2 minutes. The amplifier will immediately wake up once there is
detection of input signal. Separate auto-standby dipswitches for each channel.
Rear Panel
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FOR 4Ω LOW IMPEDANCE SPEAKER CONNECTION
FOR 8Ω LOW IMPEDANCE SPEAKER CONNECTION
FOR 100V SPEAKER WITH TRANSFORMER CONNECTION WRONG SPEAKER CONNECTION
Before connecting speakers, disconnect the AC power cable. Note the proper connecting terminals as shown below. Make sure that the total
impedance is not less than the rated impedance indicated.
-Connecting 4-16Ω Speaker Systems
When connecting conventional 4-16Ω speaker systems, connect the speaker’s positive (+) side to the terminal labeled 4-16Ω. Connect the
speaker’s negative (-) side to the terminal labeled COM.
-Connecting High-Voltage Distributed Speaker Systems
When connecting a low-impedance (100V) speaker system in parallel, connect the speaker’s positive (+) side to the terminal labeled 100V.
Connect the speaker’s negative (-) side to the terminal labeled COM.
Speaker Connection

Block Diagram
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Model C4060 C4120 C4240 C4350 C4500
Description Class-D Four Channel Power Amplifier
Rated Power Output 4x60W 4x120W 4x240W 4x350W 4x500W
Speaker Output 8Ω & 100V
Frequency Response L/H Cut OFF 20Hz-20KHz (+1/-2dB)
L/H Cut ON 70Hz-10KHz (+1/-3dB)
Input 0.775V, 0dBu, balanced phoenix connector by four channels
Input Impedance 10KΩ
THD <0.1% (1KHz/-3dBv, 100W)
S/N Ratio >80dB
Crosstalk >60dB, 1KHz, Max output
Power Consumption 300W 600W 1200W 1750W 2250W
Power Supply Wide AC input from 110V & 230V, 50-60Hz
Dimension 482(W)x420(D)x44(H) mm
Weight 8.0kg 8.5kg 9kg 9.5kg 10kg
Warranty 3 years warranty and free spare parts
Specifications
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Service
Procedures
Ensure the problem is not related to operator error, or system devices that are external to this unit. Information provided in
the troubleshooting portion of this manual may help with this process. Once it is certain that the problem is related to the product contact
your warranty provider as described in the warranty section of this manual.
Variations and Options
Variations
Products supplied through legitimate sources are compatible with local AC power requirements.
Options
No optional items are available for this product.
Warranty
Warranty terms of global three years. While the term and warranty may vary by country and may not be the same for all products. Terms
and conditions of warranty for a given product may be determined first by locating the appropriate country which the product was
purchased in, then by locating the product type.
Specifications may change without notice.
Service & Warranty
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