The KLR-4000 from Ashly is a professional-quality power amplifier that provides high-quality audio in a lightweight and efficient design. The amplifier has a 2RU rackmount design for installation in any equipment rack. It can operate in stereo, bridged, or parallel modes for terrific versatility. The 2-step Class-H circuitry provides excellent efficiency, while the switch mode power supply delivers deep bass, punchy midrange, and clear treble. The amplifier has Euroblock and combo XLR/TRS inputs, as well as Neutrik Speakon outputs, allowing you to connect to virtually any professional sound system.
The amplifier features front panel level controls for each channel, as well as indicator LEDs for output level, clip/protect, and power on/off. Each channel has a 3-position gain switch, as well as a 3-position high pass filter switch. A switchable limiter is also built in to prevent distortion. A forced air cooling system with front-to-rear air flow and removable dust filters prevents the amplifier components from overheating. Integrated protection circuitry prevents damage from over-current, DC output, and overheating.
Features
- Compact 2RU rackmount design for installation in any standard equipment rack
- Switchable stereo, bridged, and parallel modes for terrific versatility
- 2-step Class-H circuitry provides excellent efficiency
- Switch mode power supply delivers deep bass, punchy midrange, and clear treble with excellent power efficiency and low weight
- Euroblock and combo XLR/TRS inputs, along with Neutrik Speakon outputs allow you to connect to virtually any professional sound system
- Front panel level controls for each channel
- Indicator LEDs for output level, clip/protect, and power on/off
- Each channel has a 3-position gain switch
- 3-position high pass filter switch lets you reduce low-frequency rumble and hum
- Switchable limiter prevents distortion
- Forced air cooling system with front-to-rear air flow and removable dust filters prevents the amplifier components from overheating and keeps them clean
- Integrated protection circuitry prevents damage from over-current, DC output, and overheating
- Permanently-attached power cord
Specifications
| Form Factor/Type |
Rackmount
|
| Number of Amplifier Channels |
2
|
| Load Impedance/Voltage Support |
4 / 2 / 8 Ohms
|
| Power Rating per Channel |
2x 2000 W Peak at 2 Ohms
2x 1400 W Peak at 4 Ohms
2x 850 W Peak at 8 Ohms
|
| Channel Bridging & Power Sharing |
1x 4000 W Peak Bridged at 4 Ohms
|
| Amplifier Class |
2-Tier Class-H
|
Performance
| Protections |
DC Fault, DC Offset, Overcurrent, Thermal
|
| Frequency Response |
20 Hz to 20 kHz +0.3 dB (1 W at 8 Ohms)
5 Hz to 70 kHz -3 dB
|
| Damping Factor |
> 380 at 8 Ohms
|
| THD/Distortion |
≤ 0.05% THD (20 Hz to 20 kHz, 10 dB Below Rated Output at 4 Ohms)
|
Signal Processing
| DSP |
No
|
| Audio Delay |
No
|
| EQ & Filters |
High-Pass Filter
|
| Dynamics |
Limiter
|
Connectivity
| Analog Audio I/O |
2x Block 3-Pin Balanced Line Input
2x Combo XLR-1/4" TRS Balanced Line Input
2x speakON NL4 Speaker Output
|
| Digital Audio I/O |
No
|
| Network I/O |
No
|
| USB I/O |
No
|
| Phantom Power |
No
|
| Wireless |
No
|
Power
| Input Power |
120 VAC, 60 Hz
|
| AC Power Connector |
1x Hardwired Cord 15 A / NEMA 5-15
|
| Current Consumption |
14 A (1/8 Power)
19.8 A (1/3 Power)
|
Physical
| Display |
Single-LED Indicators Only
|
| Rackmount Size |
2 U
|
| Cooling |
2x Fan (Variable Speed)
|
| Operating Conditions |
22 to 72°F / -10 to 40°C up to 90% Humidity
|
| Dimensions |
19 x 16 x 3.5" / 48.3 x 40.6 x 8.9 cm
|
| Weight |
26.7 lb / 12.1 kg
|
Packaging Info
| Package Weight |
33.7 lb
|
| Box Dimensions (LxWxH) |
19 x 16 x 4"
|
