CPA24 - Receiver Audac - Free user manual and instructions

Product type	Receiver / Power Amplifier
Brand	Audac
Model	CPA24
Output power (at 1% THD, 1 kHz)	240 W
Gain control	-12 dB to 0 dB
Input sensitivity (balanced line)	1.0 ± 0.1 Vrms / 10 kΩ
High-pass filter (400 Hz)	-3 dB
Frequency response	70 Hz ~ 18 kHz (+1.5/-3 dB)
Signal-to-noise ratio	Better than 90 dB
Total harmonic distortion (1/2 power, 1 kHz)	Less than 1.0%
Output impedances	4 Ω / 31 V, 21 Ω / 70 V, 41 Ω / 100 V
Power supply	100-230 VAC, 50/60 Hz and 24 VDC (evacuation)
Power consumption (1/8 power)	361 W
Cooling	Fan
Operating temperature	0° to 40°C, humidity ≤ 95% non-condensing
Dimensions (W x H x D)	48.2 x 8.8 x 34 cm
Net weight	13.87 kg
Rack mounting	19 inches, 2U
Inputs / Outputs	XLR line input, XLR link output, EURO block output (4Ω, 70V, 100V)
Protections	Current limiting, overvoltage, overheating, temperature detection, auto-muting
Maintenance and cleaning	Do not open. Clean with a dry cloth. Avoid moisture and dust.
Spare parts and repairability	Entrust repair to qualified personnel.
General information	Commercial and industrial use (restaurants, hotels, halls, shops). Allows operation at 230 VAC or 24 VDC (evacuation).

Frequently Asked Questions - CPA24 Audac

What is the output power of the CPA24?

The CPA24 delivers an output power of 240 W at 1% distortion at 1 kHz.

What power supply voltages does the CPA24 support?

It operates on 100-230 VAC (50/60 Hz) and also on 24 VDC for evacuation applications.

Can the device be rack-mounted?

Yes, the CPA24 is designed for 19-inch rack mounting (2U) and can be expanded via the LINK terminal.

How to connect speakers to the CPA24?

Use the EURO block terminals. Connect the COM terminal to the speaker's negative (-) terminal, and the corresponding terminal (4Ω, 70V or 100V) to the positive (+) terminal. Never use the low impedance (4Ω) and high impedance (70V/100V) terminals simultaneously.

What is the recommended load impedance for 70V operation?

For 70V output, the total speaker system impedance must be 21 Ω (corresponding to 240 W power).

Does the CPA24 have thermal protection?

Yes, it incorporates a built-in temperature detector with auto-muting function to prevent overheating.

Can I use the CPA24 outdoors?

No, the device is designed for indoor use only. Avoid moisture, dust, and vibrations.

How to adjust the input level?

Turn the 'level adjustment' knob to adjust the gain from -12 dB to 0 dB. A minimum (low) setting is recommended before powering on.

What cables to use for audio inputs?

Use quality balanced cables (22 to 24 gauge) with XLR connectors. Professional wiring is recommended.

What to do in case of malfunction?

Do not open the device (risk of electric shock). Entrust repair to qualified personnel. No user-serviceable parts inside.

USER MANUAL CPA24 Audac

PROFESSIONAL AUDIO EQUIPMENT

CPA12 - 24 - 36 Power amplifier

User Manual & Installation Guid

AUDAC PROFESSIONAL AUDIO EQUIPMENT

User Manual & Installation Guide

AUDAC

http://www.audac.eu

[e-mail]

Indec

ENGLISH

INTRODUCTION. 5

ENVIRONMENT 6

SAFETY REQUIREMENTS. 7

CAUTION - SERVICING 7

OVERVIEW FRONT AND REAR PANEL OF THE CPA12 - 24 - 36.

FRONT 8

REAR. 8

FRONT PANEL - DETAIL 9

REAR PANEL-DETAIL 9

GETTING STARTED 10

WSTRING 10

CONNECTIONS 11

OUTPUT 11

WRONG CONNECTION 12

BLOCKDIAGRAM 13

ADDITIONAL INFORMATION CPA12-24-36 14

TECHNICAL SPECIFICATIONS. 14

PERSONAL NOTES 15

NEDERLANDS

INLEIDING. 16

OMGEVING. 17

VEILIGHEIDSVOORSCHRIFTEN 18

WAARSCHIUWING- SERVICE 18

OVERZICHT VOOR - EN ACHTERZIJDE CPA12 - 24 - 36. 19

VOORZIJDE 19

ACHITERZUJDE 19

VOORZIJDE-DETAIL 20

ACHTERZIJDE-DETAIL 20

ALGEMENE INFORMATIE 21

BEKABELING 21

VERBINDINGEN 22

OUTPUT 22

VERKEERDE VERBINDING 23

BLOCKDIAGRAM 24

AANVULLENDE INFORMATIE CPA12-24-36 25

This section briefly describes the possibilities of the CPA12 - 24 - 36 power amplifier.

The CPA12 - 24 - 36 was developed as an easy to use, flexible solution for multifunctional use.

During the development of the CPA-series, the AUDAC-engineers wanted to achieve four goals:

• Delivering a flexible audio solution to control multiple functions
• Offering a user-friendly device
• Guaranteeing an excellent sound quality
• Creating a modern and advanced design

The CPA12 - 24 - 36 was designed for operation on AC Mains or DC 24V evacuations. Its protection circuit protects it against current limiting, over current and overheating. The CPA-series has a built-in high temperature detection, an auto muting function and one line input and one link output with XLR jacks. These amplifiers are equipped with a low impedance (4) and constant voltage (70V, 100V) output with EURO block terminal, a built-in 400Hz high-pass filter and a power output of 120W for the CPA12; 240W for the CPA24 and 360W for the CPA36. They have a frequency range of 40Hz to 16kHz ± 3dB , a low distortion and low noise level and an adjustable input level (from -12dB to 0dB).

The CPA-series can be mounted in a 19 inch rack and can be expanded by adding a power amplifier with LINK terminal.

These power amplifiers can be used in commercial as well as industrial applications such as restaurants, hotels, shop floors, factories, warehouses, professional offices, public buildings, ...

Environment

Do not place this unit in an enclosed environment such as a bookshelf or closet. Ensure that there is adequate ventilation to cool the unit. Do not block the ventilation openings.

Do not place the unit in environments which contain high levels of dust, heat, moisture or vibration.

Do not use the unit near water or other liquids. Make sure no water or other liquids can be spilled, dripped or splashed on the unit.

This unit was developed for indoor use only. Do not use it outdoors.

Do not place objects on top of the unit.

Place the unit on a stable base.

Safety Requirements

Always handle the unit with care.

Only use a grounded socket outlet and a power cord with grounding plug to plug in the unit.

This unit is not a toy. It should not be operated by children.

Do not stick objects through the openings of the CPA12 - 24 - 36.

Do not open the unit (risk for electrical shock).

CAUTION - SERVICING

This unit contains no user serviceable parts. Refer all servicing to qualified service personnel. Do not perform any servicing unless you are qualified to do so.

Note

This product conforms to the following European Standards: EN 50081-1: 1992, EN 50082-1: 1992, EN 60065: 199

Overview front and rear panel of the CPA12 - 24 - 36

FRONT

Idcm CPA 12 & 24

REAR

Idem CPA 12 & 24

Front Panel - detail

Idem CPA 12 & 24

Rear Panel - detail

Idem CPA 12 & 24

*

Voltage Model	115/120 Vac 220/230/240 Vac
CPA12	T4AL / 250V T3.15AL / 250V
CPA24	T8AL / 250V T4AL / 250V
CPA36	T12AL / 250V T6.3AH / 250V

Getting Started

Before you install the CPA12 - 24 - 36 power amplifier, make sure you disconnect it: if the device is powered-up, you push the power button to switch it off. Turn the level control down (minimal level). When installed, the CPA12 - 24 - 36 can be switched on by pushing the power button on the front panel. The blue Power indication LED will light up if the device is powered-up.

WIRING

Select the input wire and connectors. Pre-built or professionally wired balanced line cables are recommended (22 to 24 gauge).

Connector pin information for wiring

Select the output wire and connectors.

For the output connectors of the amplifier, the use of pre-built or professionally wired, heavy gauged and high-quality speaker wires is recommended. EURO blocks can be used for the output connectors. Wrap or insulate exposed loudspeaker cable connectors to prevent short circuit.

Custom wiring should only be performed by qualified personnel. Class 2 wiring is recommended.

Connections

OUTPUT

Maintain proper polarity on the output connectors.

Output channel: connect the output EURO block terminals to the loudspeaker loads. Use terminals marked < 4> for a 4Ohm loudspeaker load, or use terminals marked 70V or 100V and COM for constant-voltage loudspeaker loads.

Connect the COM terminal to the negative (-) speaker lead; connect one of the other terminals to the positive (+) speaker lead.

Impedance and output voltage are shown below:

CPA12	4Ω/22V	41Ω/70V 83Ω/100V
CPA24	4Ω/31V 21Ω/70V 41Ω/100V
CPA36	4Ω/38V 13.5Ω/70V 27.8Ω/100V

The impedances in the above table represent the total speaker system impedances.

8Ω 8Ω

Matching transformer

WRONG CONNECTION

The figure below shows a WRONG connection.

Caution: NEVER use both the low-Z (4Ω) and Hi-Z (70V and 100V) terminals at the same time.

Additional information CPA12 - 24 - 36

TECHNICAL SPECIFICATIONS

	CPA12	CPA24	CPA36
Rated output(at T.H.D. 1.0%, 1kHz)	120W		240W 360W
Gain control -12dB ~ 0dB
Input sensitivity(at balanced line)	1.0 ± 0.1Vrms / 10Kohm
High-pass filter(at 400Hz)	-3dB
Frequency response +1.5 / -3dB at 70Hz ~ 18kHz
S/N Ratio Better than 90dB
T.H.D. at ½ rated output, 1 kHz Less than 1.0%
Output voltage and impedance	4Ω / 22V 4Ω / 3V 4Ω / 38V
	41Ω / 70V	21Ω / 70V		13.6Ω / 70V
	83Ω / 100V 41Ω / 100V 27.8Ω / 100V
Cooling	Fan
Operating temperature/Humidity	0° ~ 40°C at 95% at non-condensing
Dimensions (WxHxD)	48.2 x 8.8 x 34 cm
Net Weight	11.65 kg	13.87 kg		15.16 kg
Power consumption at 1/8 power	185W	361W 525W
Power requirement	AC100V ~ 240V, 50/60Hz and/or DC24V

Personal notes

Inleiding

WAARSCHUWING - SERVICE