CROWN XLi-2500 Power Amplifier 2x750W/4Ω-500W/8Ω-1Χ1500W bridge 8Ω 2U Rack

• Reasonably priced, robust and powerful power amplifier
• Robust and analog circuit
• LED display for each channel for signal, clip and error
• Stereo, bridge and parallel modes
• Conventional power supply
• Performance: 2 x 520 Watt an 8 Ohm, 2 x 800 Watt an 4 Ohm
• Inputs: Cinch, XLR
• Outputs: 2 x speakon, spring clip
• Robust 19 inch housing
• Height: 2 U

The S Series of RAM Audio amplifiers distils all these features to fulfill all your needs, whether youʼre starting a P.A. amplifier project from scratch, or you need to upgrade your present sound reinforcement equipment.

In the S Series amps, you'll find five 2-channel models and five 4-channel models, all offering plentiful power levels at low distortion in the range of 1.5 to 6 kilowatts, yet weighing in around 8 kilos and 30 cm deep.

• Ultra-compact and lightweight 2-U high
• Laser cut aluminum front panels with integrated carrying handles
• Neutrik® XLR input connectors, input and signal link in 2 channel models
• Input Link switch: allow daisy-chaining of the input signal
• Neutrik® Speakon® output connectors
• Detented sealed potentiometers for easy recall of volume settings
• ICL™, PMS™, Hi-temp, Signal indicators per channel
• Power on and Stand-by leds
• Highly versatile with multiple configuration and additional module options
• Full PC control via EtheRAM (with EtheRAM Control module)
• Switchable ICL™ clip-limiters per channel
• Switchable (30-50 Hz) sub-sonic highpass filter per channel
• Three-position gain selector (26, 32 or 38 dB)
• Dual or bridge mode selector
• Twin temperature controlled, back to front cooling fans
• Oversized power components (high SOA reserve specification)
Standard Signal Inputs Module: The S Series amps are equipped as standard with twin Neutrik® XLR, doubled by two other XLR connectors for linking purposes. In the 4 Channel models an XLR input per channel is provided with the signal linking facility.

Analog Processor Module: permits a very easy, user-friendly signal processing to enable the amp to set up a bi-amp system without any other outboard device. These are the Processor's main characteristics:
• 2-way stereo crossover (dual mono or single bridged sub output)
• 24dB/oct Linkwitz-Riley configurable crossover (90, 100 o 120Hz)
• Adjustable attenuation in the High-pass outputs (-3, -6 or -9dB)
• Adjustable Limiter, relative to Max. Output (-3, -6 or -9dB)


DSP44_S Module: Digital Signal Processor fully programmable through an USB port. These are the Processor's main characteristics:
• 4 Inputs/4 Outputs or 2 In/2 Out free route configurable.
• 24 bits/192 kHz 256x Oversampling Converters.
• Output Delay: 0 to 7.1 meters (20.69ms) per channel.
• XOver: Up to 48dB/oct Butterworth, Linkwitz-Riley and Bessel.
• EQ: 9 filters per channel (Parametric, Shelving, LP,HP,BP,SB).
• Gain, Mute and Phase inversion per channel.
• RMS Power and Peak Voltage output limiter per channel.
• Real Time operation from USB or front panel configuration.


Standard Signal Inputs Module
EtheRAM Control Module
Ethernet Audio Transport (Coming soon)
Analog Processor Module
DSP44_S Module
EtheRAM Control Module
AES/EBU Digital Input (Coming soon)

Frequency Response (power bandwidth ±0.25dB): 20Hz-20kHz
Phase Response (@1W 20Hz-20kHz): ±15deg
Total Harmonic Distortion (20Hz-20kHz): Intermodulation Distortion (SMPTE): Crosstalk (20Hz-20kHz): >75dB
Voltage Gain (selectable): 26/32/38 dB
Sensitivity: 1500:2.6/1.3/0.6V 2000:3.0/1.5/0.8V 3000:3.6/1.8/0.9V 4000:4.0/2.0/1.0V 6000:5.0/2.5/1.3V
3004:2.6/1.3/0.6V 4004:3.0/1.5/0.8V 4044:3.7/1.9/0.9V 6004:3.5/1.8/0.9V 6044:5.0/2.5/1.3V
Signal to noise ratio: 1500:112dB 2000:113dB 3000:115dB 4000:116dB 6000:118dB
3004:112dB 4004:113dB 4044:116dB 6004:116dB 6044:118dB
Required AC Mains (@4ohms 1/8 r.p.): 1500:4A 2000:4.8A 3000:6.2A 4000:7.5A 6000:10.5A
3004:6A 4004:7.5A 4044:11A 6004:10.5A 6044:15A
Dimensions (WxHxD): 483x88.9x310 mm - 19x3.5x12.2 inches
Weight (Net): 1500/2000: 8Kg - 17.6Lbs 3000/4000/3004/4004/4044: 8.5Kg-18.7Lbs 6000/6004/6044: 8.6Kg-18.9Lbs

Protections: Soft-start, Turn-on Turn-off transients, Muting at turn-on, Over-heating, DC, RF, Short-circuit, Open or mismatched loads, Overloaded power supply,ICL™, PMS™, SSP™

- Signal to Noise (20 Hz - 20 kHz): 100 dB
- Input Sensitivity: 1.2 Vrms
- Voltage Gain (8 Ohms): 34.4 dB
- Output Circuitry: 2-tier Class H
- Power Requirements: 6A
- Frequency Response: 20 Hz - 20 kHz, +0, 1 dB
- Dynamic Headroom (4 Ohms): 2 dB
- Damping Factor: 100
- Input Impedance: Greater than 20k (balanced)
- Maximum Input Level: +24 dB (16 Vrms)
- Input Connectors (each channel): 3-pin XLR and 1/4-inch TRS, balanced, parallel Phono, unbalanced
- Output Connectors (each channel): Speakon, 1/4-inch, Binding Posts
- Amplifier and Load Protection: Short circuit, open circuit, thermal, RF protection Load protected against DC faults
- Rear Panel Controls: Full Range / Crossover switch
- Dimensions (H x W x D): 3.5 x 19 x 10.1 inches (89 mm x 483 mm x 257 mm)
- Weight: 26 lbs (12 kg)

Front Panel Controls and Indicators:
- Gain controls, 21 detents
- Red Clip LEDs, proportional, 0.1% THD threshold
- Green Signal LEDs, threshold -35 dB
- Blue Power LED, AC on

Stereo Mode:
- 8 Ohms / both channels driven: 500 Watts
- 8 Ohms / single channel driven: 600 Watts
- 4 Ohms / both channels driven: 700 Watts
- 4 Ohms / single channel driven: 850 Watts

Distortion:
- 8 Ohms: less than 0.05%
- 4 Ohms: less than 0.1%

Dimensions and Weight in Packaging
Shipping Weight: 31 lbs
Shipping Dimensions: 24 x 15 x 7 in

This professional stereo power amplifier, working in class-H mode, provides 2x800W, at an efficiency of around 85%.

A passive transformer based power supply and hand selected components makes this power rating possible with exceptional audio quality and absolute reliability, even in the 2 Ohm mode. The output stage is fully protected against over-temperature, short circuit, RFI and equipped with soft start circuit and temperature-controlled fan cooling.  The integral soft clip limiter protects against damage to the connected loudspeakers.  The activity of a protective circuit, signal and limiter is shown for each channel by LEDʼs.