MONTARBO GRAVIS 24 2450W 2U. SMPS Power Amplifier

STEREO MODE: 2 x 450W @ 8Ω. 2 x 750W @ 4Ω. 2 x 1000W @ 2Ω.
BRIDGE MODE: 1600W @ 8Ω. 2450W @ 4Ω.
PROTECTIONS: Soft start DC, short circuit, over load, clip limit, over heat,
progressive volume, VHF. Weight 9.7 kg.
Dimension W 483 x H 89 x D 450 mm.
Assembled in China. Engineered by Montarbo.

Power Rating

Stereo Mode:
8Ω EIA 1 kHz 1% THD - 1500W
4Ω EIA 1 kHz 1% THD - 2500W
2Ω EIA 1 kHz 1% THD - 4000W

Bridged Mono:
8Ω EIA 1 kHz 1% THD - 5000W
4Ω EIA 1 kHz 1% THD - 8000W

Damping Factor     Not Specified By Manufacturer
Input Sensitivity     26dB Setting - 5.27V
32dB Setting - 2.67V
Input Impedance     > 10kΩ balanced, or unbalanced
Gain     39.1dB
Frequency Response     20Hz to 20kHz, +/- 0.2dB
Signal-to-Noise Ratio     -104dB
Total Harmonic Distortion (THD)     0.1% @ 2Ω
0.03-0.06% @ 4Ω
0.01-0.03% @ 8Ω
Input Connections     Input: XLR Male, XLR Female and 3-pin detachable terminal blocks (1 each per channel)
DataPort: HD-15, input signal in parallel with XLR input connectors
Output Connectors     Output: Neutrik Speakon (ch 1 wired to both channels) and 5-way binding posts
Controls Front Panel     AC Power Switch
Gain Controls, 21 detents, 1 dB steps (each channel)
Controls (Rear)     Input Mode: Bridge (Yellow), Stereo (Green), or Parallel (Orange)
Gain / Sensitivity: 26dB (Orange), 32dB (Green), or 1.2V (Yellow)
High Pass (each channel): 3Hz (Off), 30Hz (Yellow), or 50Hz (Orange)
Clip Limiter (each channel): Off, On (Yellow)
Indicators     Clip Limiter (each channel): Off, On (Yellow)
Camera Resolution     Flow-thru air path and solid aluminum heat sinks
Power Consumption     120V 50/60Hz - 18A
230V 50Hz - 11A
Power Requirements     Not Specified By Manufacturer
Dimensions (WxHxD)     19 x 3.5 x 15.63" (48.3 x 8.9 x 39.7cm)
Weight     33.5 lbs (15.2kg)
Specialties     Parallel Dataport, XLR/M and XLR/F connectors for simple loop-through connectivity

Info

Professional Power Amplifier 2X1200W/4Ω - Compact size (2-Rack height) - Stable SMPS (Switch Mode Power Supply) applied for low power consumption and low weight - Voltage gain available - High Damping Factor and low T.H.D - Includes clip limiter to prevent a sound crush - For better efficiency, 2-step of H-class AMP accepted - Includes protection circuit to prevent a damage of over heat, short and over voltage - Has 30Hz or 50Hz HPF to protect speaker from low-frequency - 12 Kg

Model T4n
Product Type Power Amplifier
Output Power (W) 1kHz THD+N=1% (120V)
2Ω per channel 2200
4Ω per channel 1950
8Ω per channel 1150
4Ω bridge 4400
8Ω bridge 3900
Output Power (W) 1kHz 20mS burst (120V)
2Ω per channel 2900
4Ω per channel 1950
8Ω per channel 1150
4Ω bridge 5800
8Ω bridge 3900
SN ratio (20Hz-20kHz) 106dB

THD+N 20Hz-20kHz, Half Power RL-4Ω, 8Ω
Intermodulation Distortion 60Hz: 7kHz, 4:1, Half Power 0.1%
Frequency response RL=8Ω,Po=1W,HPF=OFF 20Hz-20kHz (Max) 0dB
Frequency response RL=8Ω,Po=1W,HPF=OFF 20Hz-20kHz (TYP) 0dB
Frequency response RL=8Ω,Po=1W,HPF=OFF 20Hz-20kHz (MIN) 6dB
Channel Separation (Half Power RL=8Ω,1kHz Att. max input 600Ω shunt) 70dB
Residual Noise Att,min 20Hz-20kHz(DIN AUDIO) -70dBu
Damping factorRL=8Ω 1kHz 800
Voltage Gain Att.max 26dB
Maximum Input Voltage +24dBu
Input Impedence 20kΩ (balance) 10kΩ (unbalance)
Controls Specifications
Front Panel POWER switch(push on/push off) attenuator (31 position) x2
Rear Panel MODE switch (STEREO/BRIDGE/PARALLEL) X1; HPF switch (20Hz/OFF 12dB/oct) x1; AMP ID switch (6PDIP)x1
Connectors Specifications
Input XLR-3-31 type/ch; Euroblock connector (balance)/ch
Output SPEAKON/ch, 5way biding postx1
Date Port RJ45x2
Indicators Specifications
Power/Standby x1 (Green/Orange)
Remote x1 (Green)
Protection x1 (Red)
Temp x1 (Red) heatsink temp 85°C
Signal x2 (Green)
Mute x2 (Red)
Clip/Limit x2 (Red)
Load protection POWER switch on/off mute; DC-fault: power supply shutdown / do not return automatically
Cooling Variable-speed fan: x2
Power requirements 120V/60Hz
Weight 14.0 kg
Dimensions (W x H x D) 480 x 88 x 456mm (2U)

Features

• The i Series continues the 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 amplifier 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 where your schedule takes you
• Studio-quality analog signal processing with built-in load, line voltage, input and output monitoring
• Standard Ethernet networking via System Architect provides integratedmonitoring and control to give system operators access to the system from anylocation

Power Output (Guaranteed minimum power in watts at 20Hz-20kHz with 0.35% THD)

• 2 ohm dual (per ch), 20 mS BURST: 2,565W
• 2 ohm dual (per ch), 20Hz-20kHz: 1,800W
• 2 ohm dual (per ch), 1kHz: 1,800W
• 4 ohm dual (per ch): 2,000W
• 8 ohm dual (per ch): 1,250W
• 4 ohm bridge: 3,600W
• 8 ohm bridge: 4,000W

Performance

• Frequency Response (at 1 watt, 20 Hz - 20 kHz into 8 ohms): ±0.25 dB.
• Signal to Noise Ratio below rated full-bandwidth power, A-weighted: > 108 dB.
• Total Harmonic Distortion (THD) at 1 watt into 8 ohms:
• Total Harmonic Distortion (THD) Plus Noise at full rated power:
• Intermodulation Distortion (IMD) 60 Hz and 7 kHz at 4:1, from full rated output to –30 dB:
• 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): 55 dB, typically >70 dB.
• DC Output Offset (shorted input):
• Input Impedance (nominal): 10 kilohms balanced, 5 kilohms unbalanced.
• Maximum Input Level: +20 dBu typical.
• Network: Onboard TCP/IQ and HiQnet, compatible with standard 100 Mb Ethercom 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): 37.1 dB to 22.2 dB
• Required AC Mains: Universal AC input, 100-240VAC, 50/60 Hz (±15%). Maximum AC mains voltage 264VAC.
• AC Line Connector: Five cordsets supplied with amplifi er (USA, UK,European, Australia, India).

Front Panel Controls and Indicators

• Bridge Mode Indicator: Amber LED illuminates when the amplifi er is set to Bridge-Mono mode.
• Ready Indicator: Red LED, one per channel. Bright red: Channel is ready to pass audio. Red: Onset of compression (thermal event or fan failure). Off: Thermal event has occurred.
• Signal Indicators: One green LED per channel. Solid green: Input signal is above –40 dBu. Bright green: Channelʼs output signal has reached the onset of audible clipping.
• Power Indicator: Blue LED indicates amplifier 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 flashes only when the amplifier 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 controlshow the position of the control. Entire ring flashes when channel is muted.Can be converted to be a level meter.

Back Panel Controls, Indicators and Connectors

• Power Cord Connector: Locking, detachable 20 amp IEC inlet. Voltage range is indicated above IEC inlet.
• Reset Switch/Circuit Breaker: If the current draw of the amplifier 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 TCP/IQ or 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 flashes only when the amplifi er is polled for data, or is polled to see whether it is online.
• Preset Indicator: Yellow LED flashes to signal the number of the current preset if active.
• Input Sensitivity Switch: Three-position switch providing 1.4V, 32 dB, and26 dB settings for both channels.

Firmware/Software

• Firmware can be updated at www.crownaudio.com > Support > Downloads.
• Software features: Same as PIP-Lite module (except no Listen Bus): UserPresets, Clip Event Monitor, Input Signal Level Monitor, Output Signal LevelMonitor, Thermal Headroom Level Monitor, Power/Standby Control, Signal Mute,Polarity Inverter, Input Signal Fader, Dynamic Gain Monitors (Ghost Faders),Amplifier Information, User and Channel Labels, Amplifier Mode, AmplifierOutput Mode, Line Voltage Monitor, Error Reporting, Auto Standby, Input SignalCompressor/Limiter, Peak Voltage Limiter, Average Power Limiter, ClipEliminator, 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 (W x H x D): 19" x 3.5" x 16.2"
• Weight: 28 lbs net, 36 lbs shipping
• Protection: Amplifi er is protected against reactive loads, faults and shorts. If one channel experiences a catastrophic failure, the entire amplifier will shut down.
• Included Accessories: Rear rack ears, rack screws, operation manual, powercords, foam air filter.