NXAMP 4x1 & 4x4 Powered TDcontrollers NX AMP Advantages • NXAMP 4x4 is among the industry’s most powerful amplifiers • Cost effective integration of command, control, protection and amplification of all NEXO loudspeaker systems • Lighter and requires less rack space than conventional amplifier-processor systems • Eliminates unnecessary A/D conversion • Optional EtherSound Networking NX AMP Advantages • Power-on protection (smooth start-up with in-rush limitation) • Power-off protection (clean shut-down procedure) • Peak Voltage limiter (clip limiting) • Peak Current limiter • VHF protection • Integrate current limiter • DC offset protection • Short circuit protection • Fan speed control • Power Amp overheat protection • SMPS overheat protection • SMPS fault protection • Power cable monitoring NXAMP technology is far more complex than a bundled power amplifier and loudspeaker controller. More than two years of research yielded significant DSP innovations which allow multiple voltage/current/temperature sense lines, from the amplifier’s output, to protect both the amplifier and power supply. Robust, Rugged Power Supplies NXAMP power supplies are full resonance types with half bridge converters. This exceptional design minimizes noise is via (Zero Current Switch (ZCS) technology. NXAMP4x4 employs four times the structure of a monaural amplifier to present very high power with low load drive. This requires four converters, four transformers and of course four power supplies. In addition, on both NXAMP models, two converters work synchronize the opposite phase, thus cancelling noise. The benefits include unrivalled sonic performance and low EMC. Clean and Cool EEEngine Both NXAMP amplifiers employ YAMAHA’s EEEngine technology. This technology offers the sonic purity of conventional class AB, but with a heat dissipation equaling class D technology. In fact, NXAMP rails constantly follow the output signal needs, minimizing the required headroom (and wasted energy). Ferocious Final Stage (with Protection) NXAMP’s final stage output transistor is customized for these devices via thin chip technology, with minimized thermal resistance, to reach 300 Volts. NXAMP4x4’s final stage uses nine such transistors in parallel, to supply 135Amp output current capacity. Even though DSP protection is already used on both NXAMP models, an Area of Safety Operation (ASO) limiter circuit is also included. ASO limiting is done in analog, as the limiter attack required is too fast for digital protection and converter latency. NXAMP 4x1 & 4x4 Powered TDcontrollers POWER SPECIFICATIONS FOR NXAMP4x1 POWER SPECIFICATIONS FOR NXAMP4x4 Number of amplifiers channels Max. output voltage (no load) Max. output power (8Ω) Max. output power (4Ω) Max. output power (2Ω) Power consumption (Standby) Power consumption (Idle) Power consumption (1/8 Power) 4x channels, 2 by 2 bridgeable 4 x 200Volts 4 x 1900W 4 x 3300W 4 x 4000W 20W 150W 3000W 4x channels, 2 by 2 bridgeable 4 x 105Volts 4 x 600W 4 x 900W 4 x 1300W 10W 100W 1100W COMMON NXAMP SPECIFICATIONS FROM ANALOG IN TO POWER OUT Analog Inputs channels Frequency response Input Impedance Max Input Level Dynamic Range THD + Noise Latency time Power Supply 4x channels, analogue inputs on XLR 3 with a second XLR 3 for linking ±0.5dB from 10Hz to 20KHz 20KΩ +28dBu All Channels = 105dB unweighted Typical 0.1% flat setup 500us on a flat setup Dedicated version for 100 ~ 120Volts or 220 ~ 240Volts COMMON NXAMP FEATURES Audio Inputs Power Outputs RS232 port GPIO port Processing Front Panel NEXO is one of the world’s leading sound reinforcement loudspeaker manufacturers. Founded in 1979, the company is dedicated to crafting practical solutions with solid engineering. Each new design begins with a proprietary sophisticated computer simulation process that allows every parameter to be extensively modeled and simulated, leading to breakthrough cost and performance gains. NEXO’s comprehensive product line includes loudspeakers, analogue and digital control electronics and amplification; all designed to deliver consistent sound quality and long term reliability for a broad range of applications. NEXO S.A. Parc d’Activité du Pré de la Dame Jeanne B.P. 5 60128 PLAILLY Tel: +33 (0) 3 44 99 00 70 Fax: +33 (0) 3 44 99 00 30 e-mail: firstname.lastname@example.org NEXO LatAM Tel: +1 305 677 9322 Fax: +1 360 234 7870 e-mail: email@example.com Rear Panel Dimensions & Weight • 4x balanced analogue inputs on XLR3 with a second XLR3 for linking, using 24bit converters. • 4x digital inputs via the optional network card slot at the back. 4x Speakon outputs using internal power relay for automatic output assignment regarding setup. Allow firmware upgrade for software improvement and new cabinet setups. 5x Global Purpose Inputs and 8x Global Purpose Outputs for simple remote control and monitoring. Two DSPs, 24bit data with 48bit accumulator. 700MIPS. On/Off Mains switch, Select Wheel, Menu A and Menu B buttons, 40 characters by 2 lines display. Amp protect, Stand-by and power LED’s. Then for each channel: volume indicator (15x LEDs), Individual Mute buttons and red LED, output current signal green led, Speaker Protection yellow LED, Amp. Peak red LED. 1 (NXAMP4x1) or 2 (NXAMP4x4) mains socket; RS232 serial communications connector; GPIO port, Expansion slot for networking audio extension card, 4 XLR inputs with link and 4 Speakon 4 outputs. NXAMP4x1: 3U 19” Rack - 457 mm (18”) Depth - 16.5kg (33lbs) net NXAMP4x4: 4U 19” Rack - 457 mm (18”) Depth - 24.5kg (49lbs) net NXAMP USER CONTROLS System Selection System Set-up Protection Delay Input Patching Output Gain Volume control Save/Recall Array EQ Security Mode Remote control Certification Green status Allows control across all NEXO ranges. Within the selected range, if possible, allows cabinets to be set for passive or active mode, wideband or crossover mode, choose among available crossover point, cardioid or supercardioid mode. Multiple Peak Limiters fitted for both selected cabinet and amplifier. Multiple Acceleration, Displacement and Temperature protections on every channel. Inter-channel regulation. Up to 150m (330 ft.) of delay in 10cm (.4in ) steps Allows any of the 4x analogue (or digital) inputs combination to be routed on each output. Global and inter-channel gain ±6dB in 0.5dB steps. Each channel with 16x steps from – inf dB to 0dB. Set-up Stores up to 40x user set-ups; On- the-fly recall, without mute or glitches for instant comparison. LF or HF shelving filters to compensate ground or stacking effects, ±6dB, frequency factory tuned. Password protected for Read-Only or Remote-Only Mode. Full remote control via the Ethersound protocol and ESmonitor software. UL, SEMKO (CE), CCC, KOREA, TSS, PSE Compliant with ROHS and WEEE directive As part of a policy of continual improvement, NEXO reserves the right to change specifications without notice. NEXO Asia GPO Box 806 Hong Kong SAR China Tel: +852 9096 3472 Fax: +852 2104 3214 e-mail: firstname.lastname@example.org LIMITED WARRANTY NEXO loudspeakers and electronics are covered against defects in workmanship or materials for a period of two (2) years from the original date of purchase. At the option of NEXO the defective item will be repaired/replaced with no charge for materials/labour. The item is to be adequately packaged and dispatched, pre-paid, to a NEXO authorised distributor/service centre. Unauthorised repair shall void the warranty. The NEXO warranty does not cover cosmetics or finish and does not apply to any items which in NEXO’s opinion have failed due to used abuse, accidents, modifications or any type of misuse. All images and text herein are the property of NEXO SA, and deemed accurate, although specifications are subject to change without notice.