un peu plus encombrant que je ne l'avait imaginé, mais a la sortie quel merveille, ne chauffe pas même après une journée d'écoute et le son est tout simplement parfait !
j'éprouve a nouveau le grand frisson
Merci Audiophonics
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Find here a selection of useful and/or essential accessories for this product. These are specially selected by the Audiophonics team according to the characteristics of the product.
Stereo Class D Amplifier NCore NC250MP 2x250W 4 Ohm
The HPA-S250NC is a large single mono dual amplifier designed to meet power and precision requirements. Based on a duo of Hypex NCore NC250MP modules, this Class D amplifier is extremely efficient thanks to two switching power supply units with synchronous regulation.
Like the vast majority of amplifiers based on NCore amplification modules, the frequency response is independent of the load and electromagnetic interference is strictly controlled, significantly limiting distortion and noise. The HPA-S250NC will therefore be particularly appreciated in all conditions requiring high amplification power while maintaining a high degree of neutrality in signal reproduction. It will find its place in a professional studio as well as in a private home for high fidelity listening.
Each channel has its own Hypex NCore NC250MP amplification circuit, capable of delivering no less than 250W each. They are characterized by a flat frequency response regardless of impedance, almost totally frequency independent distortion, very low EMI radiation and a very low noise level. The control is based on a self-oscillating loop controlled by phase shift, taking into account the feedback at the output of the loudspeaker.
The SMPS power supply integrated in each of these amplifier circuits ensures high efficiency and synchronous rectifier control on the main output rails. As the power supplies are specific to each NCore module, the sound scene is refined and the dynamics preserved, without causing any additional distortion.
The internal wiring used to build the HPA-S250NC amplifier includes OCC Copper conductors with a cross-section of 2.5mm², in order to benefit from excellent conductivity and preserve all the subtleties of the signal and, in short, the quality of the sound reproduction.
This power amplifier has two RCA input ports (double mono) and two XLR ports (double symmetrical mono). The RCA bases are 24k gold plated with a heat resistant plastic cap.
XLR connectors are high quality Neutrik connectors with metal locking latches and gold-plated contacts.
A two-position switch allows you to switch between XLR and RCA input easily. This will allow two different preamplifiers to be connected to it and the input sources to be alternated.
The HPA-S250NC has two pairs of 24k gold-plated speaker terminals on its rear panel. These terminals are designed to receive banana plugs up to 4mm in diameter. The latter will also be able to accommodate bare wires thanks to a 5.3mm diameter slot that can be locked by screws.
A trigger plug provides the comfort of an ignition sequence and allows for a very complete integration into your audio installation.
The power supply input is via an IEC C14 socket with gold-plated copper conductors. The latter works with a 5x20mm 3.150A fuse (supplied and already installed).
This amplifier's trigger needs to be used with a mono trigger cable (sold separately).
Because it is capable of developing high power, the HPA-S250NC will be subjected to certain thermal stresses during its use. Heat management is a key issue to achieve a high level of audio performance and keep distortion below a controlled threshold.
For this reason, each amplifier module is mounted on a large radiator capable of efficiently dissipating heat. Similarly, carefully distributed ventilation holes will promote air circulation and heat evacuation.
Specifications | |
---|---|
Product type | Power amplifier |
Class | D |
Channels | 2 (Dual Mono) |
Inputs | 2x RCA 2x 3 poles XLR |
Output | Speaker terminal |
Technology | NCore |
Power | 2 x 180Wrms @ 2 Ohm 1kHz THD=1% 2 x 250Wrms @ 4 Ohm 1kHz THD=1% @1.66V RMS 2 x 130Wrms @ 8 Ohm 1kHz THD=1% |
THD+N | 0.0015 - 0.0024% |
SNR | 121dB @ < 10Hz-20kHz |
Output noise | 30µV |
Frequency response | 10Hz - 50kHz (+0/-3dB) |
Trigger | 5-12VDC |
Gain | 25.5dB |
Efficiency (Full power) | 92% |
Input sensitivity | Max Power at 1.66V RMS XLR : 2x0.83V RMS RCA : 1.66V RMS |
General | |
---|---|
Power supply | 100-240V Automatic detection of the input voltage |
Electric consumption (full power) | 2x350W |
Housing | Sandblasted Aluminium |
Dimensions | 413 (Width) x 322 (Depth) x 60mm (Height) |
Weight | 5.1kg |
Package | 1x HPA-S250NC Amplifier 1x Angled power cable 3x1.5mm² |
Input | RCA |
Input | XLR |
Output | Speaker terminal |
Color | Black |
Channel | 2 (Stereo) |
Class | Class D / T |
Amplifier chip | Hypex Ncore |
Power (W) | 250.0 |
Remote Control | No |
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