HPA-NXL550 R1.0 Power Amplifier Module

The NXL550 R1.0 amplifier module is a high performance, hi end amplifier module capable of over 500 watts into 4 Ohms and is 2 Ohm Stable for short periods (60 sec).

It features the option of adding separate regulated input/driver stage supplies for even high performance.

The current power measurements were done on a +-70vdc linear power supply, higher power outputs can be achieved with voltage supplies as high as +-75 volts and with other versions that are capable of handling DC power supplies as high as +-90 volts DC.

The main PCB has an over temperature and over current LED status Flag which also serves as an output clipping indicator.

Specifications:

powered from +-70vdc linear power supply

8 Ohms: 245W

4 Ohms: 425W

+-80vdc linear power supply

8 Ohms: 300W

4 Ohms: 545W

Powered from a Micro Audio SMPS1k-SN Switching Power Supply +-70vdc 

8 Ohms: 265W

4 Ohms: 475W

2 Ohms: 684W 

Frequency Response: 20Hz-20Khz, -0.1db, 3Hz-210KHz, -3dB Input filter limited.

THD: 0.002%, 1khz, @200W into 8 ohms: 0.01% 10khz @200 Watts into 8 Ohms  

IMD: 0.002%, @200W RMS into 8 ohms

SNR: -110dB, Unweighted, referenced to full output; -114.6dB A-Weighted

Damping Factor: 800 into 8 ohms, 100Hz

Gain: 25.84 (28.24dB)

Input Impedance: 22k Ohms Unbalanced: 

Inputs: RCA Phono 

Recommended Linear Voltage Supply +-70 Volts DC
For higher power output +-75vdc can be used.
PSU Power Transformer secondary windings 50vac (800VA)
Printed Circuit Board Dimensions 105mm x 72mm
Small form factor PCB
Designed as high performance Home Theatre multi-channel amplifier
Or High End 2 Channel stereo amplifier
Unconditionally Stable into any load from 4 ohm loads and up
Extra Heavy Duty Two ounce copper printed circuit board
Rugged high performance complementary Dual Die Lateral MOSFET Output Stage.

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