CROWN MA-9000i päätevahvistin 2x 2800W 2ohmia, 2x 3500W 4ohmia, 2x 3500W 2ohmia, 2x 1500W 8ohmia, 12,7kg

Macro-Tech i Series

Macro-Tech Power Amplifiers For Touring Sound

Features

- The Macro-Tech® i Series continues the Crown® Macro-Tech legacy of unparalleled sonic accuracy and detail, putting sound quality above all else
- Patented, cutting-edge Class-I circuitry gets more power out of an amplifi er with less waste
- Rugged construction ensures that all Macro-Techs are built to withstand years of abuse on the road
- Global Power Supply — designed to deliver maximum power no matter what country you work in
- Built-in load, line voltage, input and output monitoring
- Standard Ethernet networking via System Architect® lets system operators monitor and control the amplifi er from any location


Power output

Guaranteed minimum power in watts at 20 Hz-20 kHz with 0.1% THD

2-ohm Dual (per ch) 20 mS BURST 4700W, 20Hz - 20kHz 2800W, 1kHz 2800W
4-ohm Dual (per ch) 3500W
8-ohm Dual (per ch) 1500W
4-ohm Bridge 5600W
8-ohm Bridge 5700W


Specifications

Performance

Frequency Response (at 1 watt, 20 Hz - 20 kHz):
±0.25dB.

Signal to Noise Ratio below rated full-bandwidth power, A-weighted:
> 112 dB.

Total Harmonic Distortion (THD) (at 2 watts into 8 ohms):
< 0.1%.

Total Harmonic Distortion (THD) Plus Noise (at full rated power):
< 0.35%, 20 Hz to 20 kHz.

Intermodulation Distortion (IMD) (60 Hz and 7 kHz at 4:1, from full rated output to –30 dB):
< 0.35%.

Damping Factor (20 Hz to 100 Hz at 8 ohms):
> 5000.

Crosstalk (below rated power, 20 Hz to 1 kHz):
> 80 dB.

Common Mode Rejection (CMR) (20 Hz to 1 kHz):
>70 dB typical.

DC Output Offset (shorted input):
< ± 3 mV.

Input Impedance (nominal): 10 kilohms balanced, 5 kilohms unbalanced.

Maximum Input Level:
+20 dBu typical.

Network:
Onboard HiQnet™, compatible with standard 100 Mb Ethercon hardware.

Load Impedance:
(Note: Safe with all types of loads)
Stereo: 1/2/4/8/16 ohms.
Bridge Mono: 2/4/8 ohms.

Input Sensitivity (referenced to 8 ohm rated output):
1.4V, 32 dB gain, and 26 dB gain.

Voltage Gain (referenced to 8 ohm rated output):
MA-9000i: 37.9 dB to 23.0 dB

Required AC Mains:
Universal AC input, 100-240VAC, 50/60 Hz (±10%).
Maximum AC mains voltage 264VAC.

AC Line Connector:
Five cordsets supplied with amplifi er (USA, UK, European, Australia, India).


Front Panel Indicators, Controls and Connectors

Bridge Mode Indicator:
Amber LED illuminates when the amplifi er is set to Bridge-Mono mode.

Ready Indicator:
Green LED, one per channel.
On (bright): Ready.
On (dim): Onset of compression.
Off: Thermal protection.

Signal Indicators:
One green LED per channel.
Solid green: Input signal is above –40 dBu.
Bright green: Channel’s output signal has reached the onset of audible clipping.

Power Indicator:
Blue LED indicates amplifi er has been turned on and AC power is available.
The LED will fl ash when the AC line voltage is 10% above or below the nominal rated value.

Data Indicator:
Yellow LED on front panel indicates network data activity.
Data indicator fl ashes only when the amplifi er is polled for data, or is polled to see whether it is online.

Power Switch:
Push-on/push-off switch with built-in green AC mains present indicator.

Volume Control:
Precision detented attenuator with 31 steps, press-and-hold mute function.

Volume Control LED Ring:
A ring of green LEDs around each volume control show the position of the control. Entire ring fl ashes when channel is muted.
Can be converted to be a level meter.


Back Panel Connectors, Controls, and Indicators

Power Cord Connector:
Detachable 20 amp IEC inlet.
Cord locks with supplied cord retention clip.
Voltage range is indicated above IEC inlet.

Reset Switch/Circuit Breaker:
If the current draw of the amplifi er exceeds safe limits, this breaker automatically disconnects the power supply from the AC mains.
The switch resets the circuit breaker.

Output Connectors: Two high-current, 50A Neutrik ® Speakon® NL4MLP (mates with NL4FC or NL4), one per channel.
Ch 1 Speakon® is wired with Ch 1 and Ch 2 outputs for use with single 4-conductor cable.
Two pairs of high-current, 60A color-coded 5-way binding posts (for banana plugs, spade lugs or bare wire).

Analog Input Connectors:
A 3-pin female XLR connector for each channel.
Analog Loop Thru Connectors: Two male XLR passive analog loop through.

Mode Switch/Indicator: Sets amplifi er to Stereo, Bridge, or Input Y mode. OFF=Stereo, YEL=Bridge, GRN=Y.

Network Connector: This Neutrik® Ethercon connector accepts an RJ-45 connector for HiQnet™ networking.
Next to the connector is a yellow LINK ACT indicator that shows network activity, and a green 100Mb indicator that shows a 100Mb network connection.

Data Indicator:
Yellow LED on back panel indicates network data activity.
Data indicator fl ashes only when the amplifi er is polled for data, or is polled to see whether it is online.

Preset Indicator: Green/yellow LED fl ashes to signal the number of the current preset.
LED is green if current preset is active, or is yellow if current preset is modifi ed.

Input Sensitivity Switch: Three-position switch providing 1.4V, 32 dB, and 26 dB settings for both channels.


Firmware/Software

Firmware can be updated at www.crownaudio.com > Support > Downloads.

Software features:
User Presets, Clip Event Monitor, Input Signal Level Monitor, Output Signal Level Monitor, Thermal Headroom Level Monitor, Power/Standby Control, Signal Mute, Polarity Inverter, Input Signal Fader, Dynamic Gain Monitors(Ghost Faders), Amplifier Information, Userand Channel Labels, Amplifi er Mode, Amplifier Output Mode, Line Voltage Monitor, Error Reporting, Auto Standby, Input Signal Compressor/Limiter, Peak Voltage Limiter, Average Power Limiter, Clip Eliminator, Thermal Limiter, Limiter Tie, Load Supervision.


Construction

Cooling:
Dual-zone, microprocessor controlled, continuously variable speed fans, front-to-back airflow.

Front Panel:
Cast aluminum with integrated handles.

Dimensions:
19 in. (48.3 cm) W x 3.5 in. (8.9 cm) H x 16.2 in. (41.1 cm) D.

Weight:
28 lbs (12.7 kg) net, 36 lbs (16.3 kg) shipping.

Protection:
Amplifi er is protected against reactive loads, faults and shorts.
If one channel experiences a catastrophic failure, the entire amplifi er will shut down.

Included Accessories:
Rear rack ears, rack screws, operation manual, power cords, foam air filter.

Note: All measurements apply to units in Stereo mode with 8-ohm loads and rated input sensitivity unless otherwise specified.