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User Manual for Crest Audio Pro-LITE 7.5 Professional Power Amplifier Click to enlarge the picture
Contents of the user manual for the Crest Audio Pro-LITE 7.5 Professional Power
- Product category: Power Amplifiers Crest Audio
- Brand: Crest Audio
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Crest Audio Power Amplifiers
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User manual for the Crest Audio Pro-LITE 7.5 Professional Power contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Crest Audio product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Crest Audio user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Crest Audio product will considerably shorten its lifespan!
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Product description The 2RU, 7500W Pro-LITE 7.5 Professional Power Amplifier from Crest Audio is designed with a resonant switch-mode power supply and high-speed class D topology. The automatic clip limiting (ACL) circuit is designed to ensure trouble-free operation into loads as low as 2 Ω.
The front panel of the Pro-LITE 7.5 features two attenuators for lowering the output signal from 0 to -80 dB for each channel, while the 5 LED indicators offer feedback for both channels of the amplifiers operations including active, DC, temperature, signal, and ACL.
The rear panel provides two combo XLR/1/4" inputs and two 1/4" thru outputs for connecting to additional amplifiers. Speaker output connections include one 2-pin and one 4-pin twist-lock connector, which accommodates two 2-conductor or one 4-conductor speaker cables. The crossover select switch offers three settings: Full Range, Sub, and High Cut. Sub removes frequencies above 100 Hz, while high-cut removes frequencies below 100 Hz. The amplifier provides three temperature dependent variable-speed fans, while protection circuits guard against thermal overload, direct current, incorrect loads, and under & over voltages. The Pro-LITE 7.5 ships with an IEC power cable. - 2 Channel independent crossovers
- ACL (Automatic Clip Limiting) protection
- Pro-LITE class D topology
- Combination XLR 1/4" inputs
- 4 Pole twist lock output connectors
UPC: 014367612585 In the Box Crest Audio Pro-LITE 7.5 Professional Power Amplifier (7500W, 2RU) IEC Power Cable Limited 5-year Warranty Table of Contents
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Technical parametersCrest Audio 3602200 Specs | Power Rating | 2 channels x 2 Ω: 4800 W 20 ms repetitive burst / 3790 W 1% THD both channels driven @ 1 kHz
2 channels x 4 Ω: 2810 W 20 ms repetitive burst / 2450 W 1% THD / 2030 W 0.15% THD, both channels driven @ 1 kHz
2 channels x 8 Ω: 1550 W 20 ms repetitive burst / 1425 W 1% THD / 1200 W 0.15% THD, both channels driven @ 1 kHz | | Damping Factor | > 200:1 @ 20 Hz to 1 kHz @ 8 Ω | | Phase Response | +15 to -85 degrees from 20 Hz to 20 kHz | | Input Sensitivity | 2.25 V ± 3% for 1 kHz 4 Ω rated power
2.2 V ± 3% for 1 kHz 2 Ω rated power | | Input Impedance | 20 kΩ, balanced
10 kΩ, unbalanced | | Minimum Load Impedance | 2 Ω | | Maximum RMS Voltage Swing | 124 V | | Voltage Gain | x 40, +32 dB | | Frequency Response | 20 Hz to 25 kHz; +0 dB, -3 dB | | THD | 20 Hz to 20 kHz 2ch x 2 ohms: <0.5% @ 3390 W 20 Hz to 4 kHz, decreasing to 3100 W @ 20 kHz, both channels driven
20 Hz to 20 kHz 2ch x 4 ohms: <0.15% @ 1850 W 20 Hz to 20 kHz, both channels driven 20 Hz to 20 kHz 2ch x 8 ohms: <0.15% @ 1170 W 20 Hz to 20 kHz, both channels driven | | Input CMRR | > -75 dB @ 1 kHz | | Crossover | 100 Hz switchable 2nd order high pass and 3rd low pass per channel | | Crosstalk | > -60 dB @ 1 kHz @ 1000 W @ 8 Ω | | Hum and Noise | > -100 dB, "A" weighted referenced to rated power @ 4 Ω | | Slew Rate | > 12 V/µs | | Power Requirements | Current Draw @ 1/8:
2210 VA (1440 W) @ 2 Ω
1550 VA (950 W) @ 4 Ω
985 VA (560 W) @ 8 Ω
Current Draw @ 1/3:
4260 VA (3150 W) @ 2 Ω
3120 VA (2160 W) @ 4 Ω
1890 VA (1200 W) @ 8 Ω | | Connectors | Rear Panel:
1 x 3-pin IEC, AC power input
1 x Combo 1/4" XLR, channel A input
1 x Combo 1/4" XLR, channel B input
1 x Dual 1/4" phone jack, through/out
1 x 2-pin twist-lock connector
1 x 4-pin twist-lock connector | | Controls | Front Panel:
1 x Channel A attenuation knob
1 x Channel B attenuation knob
1 x AC Power On/Off switch
Rear Panel:
Crossover select switch for HPF, Normal and LPF | | Indicator LEDs | Front Panel:
2 x Active
2 x DC
2 x Temperature
2 x Channel Signal
2 x ACL (Automatic Clip Limiting) | | Idle Consumption | 250 VA, 120 W | | Cooling | 3 temperature dependent variable speed fans | | Protection | Thermal, DC, subsonic, incorrect loads, under, and over-voltage | | Construction | Aluminum: 0.062" (1.575 mm) | | Dimensions (H x W x D) | 3.5 x 19.0 x 17.0" (8.9 x 48.3 x 43.2 cm)
Handle: 0.6" (1.5 cm) | | Weight | 18.4 lb (8.3 kg) | | | | Package Weight | 19.6 lb | | Box Dimensions (LxWxH) | 21.575 x 20.63 x 7.008" |
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