Crown Audio 2400 service manual Specifications, Power

Page 6

Micro-Tech 2400 Amplifier Service Manual

Specifications

Unless noted otherwise, all specifications are based on driving an 8 ohm load per channel, both channels driven, the sensitivity switch in the 26dB position, the AC supply is 120VAC at 60Hz. Crown specifications are guaranteed through the warranty period (normally 3 years). Because our testing methods are more strin- gent than our published specifications, every Crown amplifier will exceed its published specifications.

POWER

Power

8 Ohm Stereo—520W/Ch

4 Ohm Stereo—800W/Ch

2 Ohm Stereo—1050W/Ch

8 Ohm Bridge Mono—1585W

4 Ohm Bridge Mono—2070W

2 Ohm Parallel Mono—1530W

1 Ohm Parallel Mono—2080W

Load Impedances: Rated for 16, 8, 4, 2, and 1 (parallel mono only) Ohm operation; safe with all types of loads, even totally reactive loads.

AC Mains: 120VAC at 60 Hz with standard three-wire grounded connector for North American units; 100VAC, 120VAC, 220VAC, and 240VAC at 50 or 60 Hz when equipped with universal transformers, applicable fan assembly, and other applicable hardware with coun- try specific power cord.

PERFORMANCE

Frequency Response: ±0.1dB from 20 Hz to 20 kHz at 1 Watt.

Phase Response: ±10° from 10 Hz to 20 kHz at 1 Watt.

Signal to Noise Ratio: A-weighted, better than 105 dB below full rated output. Better than 100 dB below full rated output from 20 Hz to 20 kHz.

Total Harmonic Distortion (THD): <0.05% from 20 Hz to 1 kHz, increasing linearly to 0.1% at 20 kHz at 500W.

I.M. Distortion: <0.05% from less than 164 milliwatts to 520 W at 26 dB gain.

Slew Rate: >13V per microsecond. (Slew rates are limited to useful levels for ultrasonic/RF protection.)

Damping Factor: >1000 from 10 Hz to 400 Hz.

DC Offset: <10 millivolts.

6

Input Impedance: Nominally 20K ohms balanced; 10K ohms unbalanced.

Output Impedance: <10 milliohms in series with <2 microhenries.

Protection Systems: Output Device Emulation Protec- tion (ODEP) limits drive in the event of dangerous dynamic thermal conditions without interrupting power. Current limiting for shorted load protection. DC/LF and common mode output current Fault circuitry to mute audio. Delay of 4 seconds from turn on mutes amplifier to prevent dangerous turn-on transients. A high volt- age circuit breaker in each main transformer primary and a low voltage power supply fuse in fan primary. Slew rate limiting to prevent RF burn out.

MECHANICAL

Input Connectors: Balanced 1/4 inch phone jacks. Op- tional XLR inputs with MT-XLR accessory.

Output Connectors: Color-coded 5-way binding posts on 3/4 inch centers; spaced 3/4 inch apart.

Front Panel Controls: A front panel rocker switch used to power the amplifier on and off.

Back Panel Controls: A three-position switch which selects Stereo, Bridge-Mono, or Parallel-Mono mode. A rotary potentiometer for each channel used to control output level. A ground lift switch used to isolate the phone jack input grounds from the chassis (AC) ground. And a push button circuit breaker for each channel used to protect the power supplies.

Internal Controls: A three-position switch selects 0.775V, 1.4V, or 26 dB voltage gain input sensitivity.

Indicators: Amber Enable indicator shows on/off status of low-voltage power supply. An Amber ODEP indica- tor for each channel shows the reserve energy status. If no reserve energy is available the indicator will dim in proportion to ODEP limiting.

Construction: Black splatter-coat steel chassis with specially designed flow-through ventilation system.

Mounting: Standard EIA 310 front-panel rack mount with supports for supplemental rear corner mounting.

Dimensions: 19 inches wide, 3.5 inches high, 16 inches deep behind front mounting surface.

Weight: 46 lbs, 14 oz. Shipping; 55 lbs, 12 oz.

Page 5 Page 7
Image 6
Page 5 Page 7
Contents MICRO-TECH-2400 Avis Table of Contents Warranty IntroductionScope Parts Information Specifications PowerVoltage Conversion Overview FeaturesTheory Front END OperationLast Voltage Amplifiers LVAs Voltage AmplificationGrounded Bridge Topology Voltage TranslatorsHigh Side HS Low Side LSOutput Device Emulation Protection Odep Positive Electrical Checkout Procedures Test 6 Voltage Gain Test 7 Phase ResponseTest 12 Output Power Test 8 Level ControlsTest 14 Odep Limiting Test 16 Signal to Noise RatioPost Testing Test 15 LF ProtectionOutput Assembly ONE PER Channel Parts List Non-ModulePower Supply Supplimental ItemsOutput Assembly CONT. ONE PER Channel Back Panel AssemblyChassis Front Assembly Main Chassis Assembly MiscellaneousMain Modules Module InformationModule History Fuse ModuleLeds M46330-3 Fuse Module & Q43327-8 Display Module Parts ListDiodes ResistorsInductors Q43354-2 Output Module Parts List P10429-2 BoardCapacitors TransistorsQ43328-6 Main Module Parts List D8679-9 Board Q43328-6 MT-2400 Original Main Module Use Schematic JQ43328-6 Main Module Parts List Cont. D8679-9 Board Resistor NetworksSwitches Test PointsQ43328-6 Main Module Parts List Cont. D8679-9 Board Q43399-7 Main Module Parts List D8827-4 Board Q43399-7 MT-2400 Main Module Use Schematic JQ43399-7 Main Module Parts List Cont. D8827-4 Board TP1 TP2 U103A U203A Open

2400 specifications

Crown Audio is a well-respected name in the audio industry, known for its powerful and reliable amplifiers. Among its notable products is the Crown Audio 2400, a high-performance amplifier that has garnered attention for its impressive range of features and technologies.

The Crown 2400 is part of the XTi series, which is renowned for delivering exceptional sound quality and performance. A key feature of the 2400 is its innovative Class-I technology. This design allows the amplifier to remain highly efficient while producing substantial power output, making it suitable for a variety of applications, from live sound to installation settings. With a power rating of 2400 watts per channel at 4 ohms, the XTi 2400 provides ample power for driving multiple speakers, ensuring that audio can fill even the largest spaces.

Another standout characteristic of the Crown 2400 is its built-in DSP capabilities. This onboard digital signal processing allows users to tailor the audio output to their specific needs. The DSP features include adjustable crossover settings, EQ adjustments, delay settings, and limiting functions, all accessible through an intuitive LCD interface. This user-friendly design enables quick adjustments in real-time, which is critical in dynamic live performance environments.

The amplifier also boasts advanced connectivity options, including both XLR and 1/4-inch input connectors, allowing for versatile integration with various audio sources. Additionally, the inclusion of Speakon outputs provides secure and reliable connections to speakers, minimizing the risk of accidental disconnects during performance.

Thermal management is another area where the Crown 2400 excels. The amplifier is equipped with a comprehensive cooling system, which includes a variable-speed fan and extensive heat sinking. This design ensures that the amplifier operates efficiently even under heavy load, prolonging its lifespan and maintaining optimal performance.

Finally, the Crown Audio 2400 is designed with durability in mind. Its rugged construction makes it suitable for the rigors of touring and demanding live environments, reinforcing Crown's commitment to quality and reliability.

In conclusion, the Crown Audio 2400 stands out as a powerful and versatile amplifier, offering Class-I technology, robust onboard DSP, excellent connectivity options, advanced thermal management, and durable construction. These features make it an ideal choice for audio professionals seeking reliability and high performance in their sound systems.
Top Page Image Contents