MONTARBO GRAVIS 30 3000W 2U. SMPS Power Amplifier

STEREO MODE: 2 x 650W @ 8Ω. 2 x 1050W @ 4Ω. 2 x 1350W @ 2Ω.
BRIDGE MODE: 2200W @ 8Ω. 3000W @ 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.

BASIC Series - Intelligent Power

BASIC - that's meeting the tightest budgets and professional requirements
in reliability, flexibility and sound. Alone or in combination with the other
products of the Bittner portfolio.
The consequent realisation of the Bittner quality standards indicates once
more our understanding of the contracting business. It underlines our philosophy
that cost consciousness has nothing to do with giving up standards. Compromise
is a word unknown to Bittner Audio!
The incorporation of detent potentiometers, clip limiter, protection circuits for
any imaginable situation, as well as a first-class production process using only
highest-quality components made the BASIC series the choice of most contractors.

Certainly more than basic!

High Tech SMT design
Excellent sound and superior impulse response
Protection Circuits: DC, LF, HF, Thermal, Short Circuit, Current Limiter, 3 ms Muting Delay
XLR Inputs
Speakon and Binding Posts
Clip Limiter
Toroidal transformers
LED Indicators for SIGNAL, CLIP, PROTECT, POWER
Temperature controlled, variable speed, low noise fans
Detent potentiometers
Stereo / Bridged / Parallel Mode
Ground Lift
Robust Steel Chassis
3 Year Warranty

TECHNICAL DATA:
Basic 1200:  2x 600 W @ 4 Ohm
Class:  AB
Frequency Response: 20 Hz - 20 kHz (0 / -0.3 dB)
THD: < 0.03%
Signal-to-Noise Ratio: < -102 dB
Channel Seperation: > 85 dB
Input Sensitivity:  +6 dBu
Input Clipping:  22 dBu
Input Impedance:  20 kOhm
Damping Factor:  > 400 @ 4 Ohm
Cooling:  2x Fan (temp. reg. variable speed)
Weight:  15 kg.
Dimensions : 2 RU / 483 x 88 x 454 mm (19" x 3.5" x 17.9“)

Power Output Level:  QD4480                       

8ohm (Quad Ch)       80W    
4ohm (Quad Ch)       120W    
8ohm bridged mono   240W 

Input Sensitivity (8ohm, 1kHz)  0.775Vrms
Input Impedance 20kohm Balanced 
Slew Rate (8ohm, Full Swing) ±30V/?sec
Frequency Response (±0.5dB) 20kHz ~ 50kHz 
T.H.D. (f=20Hz~20kHz, Half Power) 0.03% 
Signal to Noise Ratio 105dB
Damping Factor (8ohm, 1kHz)  100
Rasidual Noise  -85dB
Channel Separation (8ohm, 1kHz)  80dB
Voltage Gain (4ohm)  26dB 29dB 32dB
Power Source  100-120VAC or 220-240VAC ; 50/60Hz
(supplied AC mains transformer depends on country requirements)
Power Consumption  300W 420W 770W
Weight  11.5kg/25.3lb 15.5kg/34.2lb 17kg/37.5lb
Dimensions  482(W) x 88(H) x 369(D) mm
/19(W) x 3.5(H) x 14.5(D) in
 

The Crown® Macro-Tech® 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 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 amplifier from any location

Performance 
Frequency Response (at 1 watt, 20Hz - 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
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) MAi-5000i:
37.1 dB to 22.2 dB MAi-9000i:
37.9 dB to 23.0 dB MAi-12000i:
39.3 dB to 24.5 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 amplifier (USA, UK, European, Australia, India)
Construction 
Cooling  Dual-zone, microprocessor controlled, continuously variable speed fans,
front-to-back airflow
Front Panel  Cast aluminum with integrated handles.
Weight 28 pounds (12.7 kg) net, 36 pounds (16.3 kg) shipping. 
Dimensions (W x H x D)  19 in. (48.3 cm) W x 3.5 in. (8.9 cm) H x 16.2 in. (41.1 cm) D.
Protection Amplifier is protected against reactive loads, faults and shorts. If one channel experiences a catastrophic failure, the entire amplifier will shut down.

4-ohm Dual (per ch): 4,000W
8-ohm Dual (per ch): 2,100W
4-ohm Bridge: 7,000W
8-ohm Bridge: 8,000W

Engineered from the ground up for unmatched quality and performance,
the Crown? DSi Series of power amplifiers offers three models of 500W,
800W, and 1200W per channel at 4 ohms. Onboard digital signal processing
includes crossovers, EQ filters, delay and output limiting. Rear panel HD-15
connector provides easy input/output connectivity between DSi amplifiers
and the new DSi-8M System Monitor.
The intuitive front panel LCD screen guides installers through a setup process?
featuring presets for the industry-standard JBL cinema loudspeaker systems?
to make configuration quick and easy.
At the touch of a button, Crown?s DSi cinema amplifiers deliver perfectly matched
performance with each award-winning JBL ScreenArray? system, making this the
ultimate cinema solution.

Features :
Includes three models of 500W, 800W, and 1200W per channel at 4 ohms
Automatic presets for popular JBL cinema speaker systems for quick, easy
configuration
Intuitive front-panel LCD screen guides installers through setup
Onboard digital signal processing includes crossovers, EQ filters, delay, and
output limiting
Computer connectivity via USB allows fast setup and configuration with HiQnet?
System Architect? software
Rear-panel HD-15 connector provides easy input/output connectivity between DSi
amplifiers and new DSi-8M System Monitor
Switch-mode universal power supply
All products fill 2U rack spaces and weigh under 19 pounds
Barrier strip outputs, removable Phoenix-style input
Three-Year, No-Fault, Fully Transferable Warranty completely protects your investment
and guarantees its specifications

The Crown? DSi 1000 power amplifi er shall be a solid-state two-channel model
with a switch-mode universal power supply. A rear-panel HD-15 connector shall
provide input/output connectivity between the DSi amplifi er and the DSi-8M
System Monitor.
The outputs shall be usable as stereo or bridged-mono modes of operation.
The bridged-mono mode shall bridge the outputs to provide increased output
voltage.
Front panel controls and indicators shall include the following:
Level: Detented rotary level control, one per channel.
Power Switch: On/off switch applies AC power to the amplifi er.
Sel/Prev/Next Buttons: Three buttons near the LCD screen shall be used to
access menu items.
LCD Screen: Backlit liquid crystal display shows speaker presets and signal
processing.
Signal Indicator: Green LED, one per channel, fl ashes when a very low-level
signal is present at input.
?10 Indicator: Green LED flashes when output signal exceeds ?10 dB below
clip.
?20 Indicator: Green LED flashes when output signal level exceeds ?20 dB
below clip.
Ready Indicator: Green LED, one per channel, illuminates when the amplifi er is
ready to produce audio.
Clip Indicator: Red LED, one per channel, turns on at the threshold of audible
distortion.
Temp/Fault Indicator: Red LED, one per channel, illuminates under Fault or
excessive temperature conditions.
Power Indicator: Blue LED illuminates when the amplifi er has been turned on
and has power.
Rear panel controls and connectors shall include the following:
AC Line Connector: NEMA 5-15P (15A).
Input Connector: Two 3-pin removable Phoenix-type connectors each accept a
balanced line-level input signal.
Output Connectors: 4-position barrier strip with connectors for dual louspeakers
or bridge-mono loudspeaker.
HiQnet USB Connector: Type B, connects to a HiQnet network.
HD-15 Connector: For cinema I/O compatibility with DSi-8M System Monitor.
The amplifi er shall have the following specifi cations:
Output Power: 2 ohm Stereo (per channel): 700W with 1% THD, 4 ohm Stereo
(per channel): 500W with 0.5% THD, 8 ohm Stereo (per channel) 275W with
0.5% THD, 4 ohm Bridge-Mono: 1,400W with 1% THD, 8 ohm Bridge-Mono:
1,000W with 0.5% THD.
Voltage Gain at 1kHz, 8 ohm rated output: 26 dB.
Frequency Response: +0/?1 dB from 20 Hz to 20 kHz at 1 watt into 4 ohms.
Load Impedance: Safe with all types of loads. Rated for 2 to 8 ohms in Stereo
mode, 4 to 16 ohms in Bridge-Mono mode.
Sensitivity at 8 ohm rated output: 2.35V.
Sensitivity at 4 ohm rated output: 2.24V.
Sensitivity at 2 ohm rated output: 1.88V.
Signal to Noise Ratio (below rated 8-ohm power at 1 kHz): 105 dB
(A weighted).
Damping Factor: Better than 500 from 20 Hz to 500 Hz.
Crosstalk: > 70 dB below rated power, 20 Hz to 1 kHz.
Input Stage: Input is electronically balanced and employs precision 1% resistors.
Input Impedance (nominal): 20 k ohms, balanced;10 k ohms, unbalanced.
Maximum Input Signal: +22 dBu typical.
AC Line Voltage and Frequency Confi gurations Available: 100V, 120V, 220-240V,
50/60 Hz.
AC Line Current: 6.5A.
At Idle: Draws no more than 90 watts.
Operating Temperature: 0° C to 40° C at 95% relative humidity (non-condensing).
The DSP section shall have the following specifi cations:
EQ: 6 parametric fi lters per channel with adjustable Q, boost/cut ±15 dB. Also
adjustable high and low shelving fi lters.
Filters: Highpass and lowpass per channel. Butterworth 12/18 dB per octave
and Linkwitz-Riley 24 dB per octave. High and low shelving fi lters, one per
channel.
Delay: Up to 50 msec total delay per channel.
Output Limiter: Prevents clipping and protects loudspeakers. Choice of ?3, ?6,
or ?12 dB threshold per channel.
Presets: 5 user-defi nable loudspeaker presets and 15 factory-default JBL
system presets.
Protection shall include the following:
DSi-Series amplifi ers shall be protected against shorted, open or mismatched
loads; overloaded power supplies; excessive temperature; chain destruction
phenomena; excessive output current, and input overload damage. They also
protect loudspeakers from input/output DC, large or dangerous DC offsets and
turn-on/turn-off transients
The chassis shall be steel. Cooling shall be by a proportional speed fan with
front-to-rear airfl ow.
Dimensions shall be EIA Standard 19-in. rack mount width (EIA RS-310-B), 3.5
in. (8.9 cm) high and 12.25 in. (31.11 cm) deep behind mounting surface.
Net weight shall be 19 lb (8.6 kg). Shipping weight shall be 22 lb (10.0 kg)