Ediscreation, The Brand of Handcrafted HiFi Gear.: NewclassD Class D amplify project

為何會DIY ClassD amp, 我想好多發燒友在未有聽過高級 Class D amp 前也被這名主加上吾好聲的等號！

事因是有一天上了一發燒友家訪, 我便被他那一台Jeff class D amp 後級深深地吸引住!! 那個是完全把嗽叭吸實的控制力，張高低音的層次活潑地表現出來!
這一刻我便張 ClassD amp 的印象原全改觀了。

所以我決心要做一台最接近高級hiend 的ClassD mono 後級!!
我多次的網上找資料，最後只有N core N C400 及NewclassD 兩個牌子可以去到這級數。
最後我選擇了NewclassD 的NCDX 這模塊作為我的功放基礎！
可能我已用了多年 NewclassD的產品和看了規格後被他的高標準吸引了，所以最後我是選用了它!

NewclassD NCDX 規格

Output Power RMS	250	Watt 8 Ohms
Output Power RMS	480	Watt 4 Ohms
Output Power RMS	480	Watt 3.2 Ohms
Harmonic Distortion THD max	0.003%	@ 1 W 8 Ohms 50 - 20.000 Hz
Harmonic Distortion THD typ	0.0003%	@ 1 W 8 Ohms 1kHz
Harmonic Distortion THD typ	0.005%	@ 40 W 8 Ohms
Audio Bandwidth	2 - 160.000 Hz	@ 8 Ohms
Audio Bandwidth	2 - 70.000 Hz	@ 4 Ohms


NCDX has one of the lowest distortion figures in the world. Here recorded at 1Wrms in 4 Ohms, and with feedback loop set to 'pre' (before output inductor). Around 0.0007% THD from 20-20.000 Hz, (note the 20 Hz sample is a break-in sample) Typical value. Measurements on NCDXi-627 and NCDX Discrete have THD levels which are below our measurable limit of 0.0003%.