Crown Audio 180MA, 280MA Choose Input Wire and Connectors, Choose Output Wire and Connectors

Page 9

Commercial Audio Series Mixer-Amplifiers

2 Setup

2.3 Choose Input Wire and Connectors

Crown recommends using pre-built or professionally wired bal- anced line (two-conductor plus shield), 22-24 gauge cables and connectors. You should use 3-pin Phoenix-type cable ends at the amplifier inputs. Unbalanced line may also be used but may result in noise over long cable runs.

Figure 2.3 shows connector pin assignments for balanced wir-

MIXER-AMP INPUT

ing, and Figure 2.4 shows connector pin assignments for unbal-

 

anced wiring. The RCA input connectors can also be used for

 

 

unbalanced inputs.

 

Figure 2.3 Balanced Input Connector Wiring

2.4 Choose Output Wire and Connectors

For the amplifier output connectors, Crown recommends using pre-built or professionally wired, high-quality, two-conductor, heavy gauge speaker wire and connectors. You may use crimp- on spade lugs for your output connectors (Figure 2.5). To prevent the possibility of short-circuits, wrap or otherwise insulate exposed loudspeaker cable connectors. Cover the output con-

Figure 2.4 Unbalanced Input

Connector Wiring

MIXER-AMP INPUT

BALANCED LINE

nections with the supplied non-touch cover.

Using the guidelines below, select the appropriate size of wire based on the distance from amplifier to speaker. The wire sizes apply to the 4-ohm tap.

Distance

Wire Size

up to 25 ft.

16 AWG

26-40 ft.

14

AWG

41-60 ft.

12

AWG

61-100 ft.

10

AWG

101-150 ft.

8

AWG

151-250 ft.

6

AWG

NOTE: Custom wiring should only be performed by qualified personnel. Class 2 wiring is required.

CAUTION: Never use shielded cable for output power wiring.

Use 2-conductor shielded cable and 3-pin Phoenix-type connectors for Line Output wiring (Figure 2.6)

Figure 2.5 Two Amplifier Output Connectors on 280MA Back Panel

(One Connector in 180MA and 1160MA)

S

SHIELD

TO DESTINATION

 

 

 

OUTPUT

 

UNBALANCED LINE

TO DESTINATION

 

 

 

SHIELD

UNGROUNDED

S

PRODUCT WITH

 

 

 

2-PRONG POWER

OUTPUT

(This connection reduces

CORD ONLY

 

 

the signal level by 6 dB.)

 

Figure 2.6 Line Out Wiring.

Top: Balanced. Bottom: Unbalanced.

Operation Manual

page 9

Page 8 Page 10
Image 9
Page 8 Page 10
Contents 180MA 280MASome models may be exported under the name Amcron Use only with a cart, stand, tripod, bracket, or Important Safety InstructionsDeclaration of Conformity Safety StandardCrown International, Inc European Representative’s Name and AddressTable of Contents Welcome FeaturesOutput Volume Controls Input Volume ControlsOutput Signal Presence Indicator Clip IndicatorAuxiliary Power Input Back Panel Controls and Connectors Reset SwitchAmplifier Outputs Connectors Amp Config SwitchSetup InstallationHow to Attach Rack Ears Choose Output Wire and Connectors Choose Input Wire and ConnectorsWire Your System Typical input and output wiring is shown in FigureOutputs Maintain proper polarity +/- on output con- nectors Link In/Out Switches Phantom PowerHow to link another mixer to your mixer-amplifier How to set up Music-On-Hold outputPowering Up Remote Volume ControlIncluded Accessories Optional Accessories280MA Block Diagram Block DiagramNo input signal Input signal level is very low TroubleshootingSpecifications Service 12/01 WarrantyWorldwide Except USA & Canada Credit card information City State/Prov Postal Code CountryType of credit card MasterCard Personal/Consumer Visa

180MA, 280MA specifications

Crown Audio has established itself as a leader in the professional audio industry, and its 280MA and 180MA models epitomize its commitment to high-quality sound reinforcement. These amplifiers are designed for a range of applications, including commercial audio, live sound, and installation, providing unmatched performance and reliability.

The Crown 280MA is a robust two-channel amplifier that delivers an impressive power output of 280 watts per channel at 4 ohms. Its engineering focuses on efficiency and clarity, making it an excellent choice for any scenario where quality audio is essential. One of its standout features is the built-in mixer, which allows users to connect multiple audio sources seamlessly. This mixing capability is especially beneficial in environments such as restaurants, schools, and places of worship, where different audio sources may need to be balanced and controlled easily.

On the other hand, the Crown 180MA offers a more compact design but does not compromise on performance. With a power output of 180 watts per channel at 4 ohms, this model is perfect for smaller venues or setups. Like the 280MA, the 180MA also includes a built-in mixer, ensuring versatile audio management. Both models feature a streamlined user interface, enabling intuitive operation and quick adjustments.

Both amplifiers incorporate advanced technology such as Crown's proprietary DriveCore technology, which enhances power efficiency while reducing distortion. This technology allows the amplifiers to deliver clean, transparent power without the weight typically associated with traditional designs. The lightweight nature of both models makes installation and transport straightforward, adding to their practicality for sound engineers and event organizers.

The overall construction of the 280MA and 180MA is rugged, built to withstand the rigors of professional use. Features such as short-circuit protection, thermal protection, and overload protection ensure long-term reliability, even in demanding environments. Furthermore, the amplifiers offer flexible input options, including line-level and microphone inputs, allowing users to connect various audio sources without hassle.

In conclusion, the Crown 280MA and 180MA amplifiers represent a perfect blend of power, efficiency, and advanced technology. Their built-in mixers, robust protection features, and lightweight designs make them highly versatile for a wide array of applications. Whether used in commercial settings or live sound environments, these amplifiers ensure that the audio experience remains top-notch, reinforcing Crown Audio's reputation as an industry leader.
Top Page Image Contents