Power amplifier Lab.Gruppen FP 4000/SP

Lab.Gruppen 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. 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. 

To achieve the extreme power-to-size ratio in the FP+ Series, Lab.gruppen engineers refined and upgraded two proprietary technologies: 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.

Specs

Model: FP 4000

General:

• Number of amplifier channels 2
• Peak total output all channels driven 4000 W
• Max output current per channel 50 A peak
• Peak output voltage per channel 121 V

Max output power (all channels driven):

• 2 ohms 2000 W
• 4 ohms 1600 W
• 8 ohms 800 W
• 16 ohms 400 W

Max output power bridged:

• 2 ohms Not recommended 1
• 4 ohms 4000 W
• 8 ohms 3200 W
• 16 ohms 1600 W

Performance:

• THD 20 Hz - 20 kHz at 1 W <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: 483x88x396 mm

Weight: 12 kg