FP 4000
Although an output rating of 2000 W per channel places it at the low end of the FP+ Series, the value-priced FP 4000 has ample reserves for a wide variety of applications, including effortless driving of mid- and high-frequency bands in line array systems as well as the top or bottom end of monitor wedges.
Network control
The FP 4000 is shipped with a NomadLink® network interface as standard. In conjunction with DeviceControl software, NomadLink allows monitoring of all key amplifier parameters and remote control of power on/off, channel mutes, and channel solo functions.
NB. NomadLink requires the separate NLB 60E NomadLink Bridge & Network Controller
Proven ergonomics
View all key performance parameters at a glance – in real time – on the comprehensive front panel display. The FP+ provides the most complete and useful front panel indication on the market today. Bright, color-coded LEDs give clear status indication of all control activation, warnings and faults – without scrolling through menus. Conditions such as blown drivers, shorted lines, and over-temperature channels are easily recognizable. You won’t waste time trying to decipher a generic “trouble light.”
Around the back
The FP+ rear panel provides all the input and output connections you’ll need plus RJ45 in and out for NomadLink® control and monitoring. With the DIP-switch matrix, you can assign a hard or soft attack to the limiter functions, set overall gain to one of seven different levels, bridge any pair of channels, and set the VPL for optimum output characteristics with the connected load. All in a matter of seconds while the amp is in the rack.
Under the hood
To achieve the extreme power-to-size ratio in the FP+ Series, two proprietary technologies were refined and upgraded: the regulated switch-mode power supply (R.SMPS™) and the patented Class TD™ output stage. Both are incorporated in all four FP+ Series amplifiers. Working together, this new generation of proprietary circuits produces more power from a smaller package while at the same time maintaining Lab.gruppen’s peerless reputation for sonic excellence.
To ensure efficient, uniform cooling, the ultra-efficient Intercooler® uses thousands of tiny cooper cooling fins to increase exposure of the heat sink to the cooling air flow. Twin variable-speed fans respond to temperature sensors, forcing air over the Intercooler fins in a front-to-rear flow. All output devices are mounted transverse to the airflow, so the cooling effect is uniform. There are no “end-of-tunnel” output transistors subject to greater warming and, consequently, possible premature failure.
TECHNICAL SPECIFICATIONS
General Number of channels: 2 Peak total output all channels driven: 4000 W
Peak output voltage per channel: 121 V
Max output current per channel: 50 A peak
Max output power all channels driven 16 ohms: 400 W 8 ohms: 800 W 4 ohms: 1600 W 2 ohms: 2000 W
Max output power bridged 16 ohms: 1600 W 8 ohms: 3200 W 4 ohms: 4000 W 2 ohms: Not recommended (*1)
Performance THD 20 Hz - 20 kHz at 1W: <0.1% THD at 1 kHz and 1 dB below clipping: <0.05% Signal to Noise Ratio: >112 dBA Channel separation (Crosstalk) at 1 kHz: >70 dB Input impedance: 20 kOhm Output impedance @ 100 Hz: 32 mOhm
Gain, Sensitivity and Limiters VPL, selectable per ch: 121, 101, 83, 70, 56, 47, 38 V VPL, when bridged (*2): 242, 202, 166, 140, 112, 94, 76 V Voltage Peak Limiter mode (per ch.): Hard / Soft Amplifier gain selectable (all channels) – rear-panel switches (*2): 23, 26, 29, 32, 35, 38, 41, 44 dB Default gain: 35 dB Level adjustment (per channel): Front-panel potentiometer, 31 position detented from -inf to
Connectors and Buttons Output connectors (per ch.): Neutrik speakON Input connectors (per ch.): 3-pin XLR, electronically balanced Output bridge mode: A+B - Ch. A is signal input source. A+B, C+D - Ch.’s A and C are input source NomadLink network: On board, 2 x RJ45 connectors IN and OUT Intelligent fans (on/off): Yes, depending on presence of output signal Power on/off and Remote enable on/off: Individual switches on front-panel Cooling: Dual fan, front to rear airflow, no filter required, temperature controlled speed
Front-panel user interface Common: NomadLink Network; Power Average Limiter (PAL) (*4); Power on Per channel: Signal present / High-impedance; -10 dB and -4 dB output signal;Voltage Peak Limiter (VPL); Current Peak Limiter (CPL): Very High Frequency (VHF); High temperature; Fault; Mute
Power Operating voltage, 230 V / 115 V nominal (*3): 130-265 V / 65 -135 V Minimum power-up voltage, 230 V / 115 V: 171 V / 85 V Power Average Limiter (PAL) (*4): Yes Soft-start / Inrush Current Draw: Yes / max. 5 A Mains connector: 230 V CE: 16 A, CEE7; 115 V ETL: 20 A / NEMA 5-20P
Dimensions - Weight - Finish Dimensions: W: 483 mm (19”), H: 88 mm (2 U), D: 396 mm (15.6”) Weight: 12 kg (26.4 lbs) Finish: Black painted steel chassis with black painted steel / aluminum front
Approvals Approvals CE, ANSI/UL 60065 (ETL), CSA C22.2 NO. 60065, FCC
Notes *1: Regarding n.r. (not recommended) notes: The amplifier will be fully operational in bridge-mode into 2 ohm and high impedance (Hi-Z) loads, but due to physical constraints in the construction, the max. output power will not be significantly higher than running individual channels and therefore this mode of operation is not recommended. *2: Automatic -6 dB gain compensation when bridging channels. *3: Separate 230 V or 115 V versions available. Not selectable on the amplifier. *4: PAL can reduce the maximum output power to keep the power supply operating safely, and/or to prevent excessive current draw tripping the mains breaker. Refer to the FP+ Operation Manual section 7.5.8 Power Average Limiter (PAL) for more information.
