试做 SDS LABS 的CS8412 + CS4328 无运放 直角走线

octflower

卡西利亚斯 发表于 2014-10-28 16:28
外松内紧外慢内快那不是又松又紧又快又慢么。
没装那滤波板部分的时候声音很差，有了之后，马上咸鱼翻 ...

最终版本出来了吗

卡西利亚斯

octflower 发表于 2014-11-5 21:34
最终版本出来了吗

在RS上买管子，还没发过来呢。

sskyd

漂亮，强焊呀，

weifuquan2000

有没有人考虑CS4328并联的，我想试下，会不会把cs4328搞坏

wong

CS4328高频很飘逸，听了印象深刻，而且简洁适合DIY，最近也心思思中

q1688

搞片PCB来玩玩

卡西利亚斯

q1688 发表于 2015-4-19 14:15
搞片PCB来玩玩

自己来拍啊....

q1688

卡西利亚斯 发表于 2015-4-20 10:17
自己来拍啊....

拍了

lancelothy

我收了一台sonic solution的 A/D D/A Converter, 用CS4328+8412做DA,  ADC部份用CS5336,估计是录音室出来的货。有AES/EBU输入输出口（都是5针的接口），可以改XLR平衡输出，或者直接买5针接头焊两个XLR头接出来，这个AD用途可能接MIC或者其它音频模拟收集端，DA出来的声音吓我一跳，高频真有绕梁三日之感，细节很丰富，低频弹性非常好。中频薄水了少少，接输出牛前级后，出来的声音正是我想要的。

真的25岁

支持直角走线  哈哈

卡西利亚斯

lancelothy 发表于 2015-4-23 22:22
我收了一台sonic solution的 A/D D/A Converter, 用CS4328+8412做DA,  ADC部份用CS5336,估计是录音室出来的 ...

可以给张清晰大图看看么。谢谢了。

laslmt

技术帝，要顶。

lancelothy

卡西利亚斯 发表于 2015-4-24 00:29
可以给张清晰大图看看么。谢谢了。

把你邮箱给我，我发给你。这里传不了大图

ess9018

好技术

lancelothy

卡西利亚斯 发表于 2015-4-24 00:29
可以给张清晰大图看看么。谢谢了。

OK, enough time walking down memory lane. Back to the question of using output/buffer stages with CS4328. All that has been written above is correct and I agree. What I want to add is some real world experience gained in my listening room and reports from X-DAC 3.0 users in the Americas, Europe, and Asia.

Like everything in engineering its a trade-off. By-passing the output buffer stage yields maximum transparancy and the finest level of musical detail. The down side is a reduction in bass slam and overall dynamics. A good buffer amp with great power supplies gets you almost all the way there as far as transparancy and resolution of musical details while bringing to the party a fuller measure of bass slam and both micro & macro dynamics.

The results described above are system dependent. If you have an easy to drive device following CS4328 (i.e. high-Z preamp + low cap cables) the negative effects of doing without the buffer amp will be largely elimanated. On the other hand if you want to drive 10 meters of cable into a passive attenuator 'ya better keep that buffer onboard. Put another way CS4328+buffer is a more universal solution while CS4328 naked needs careful system matching to do its best.

FYI my favored buffer for this application is the AD811 curent feedback video op-amp. Tons of bandwidth, low enough noise and as its designed to drive double terminated 75 ohm video lines it barely notices audio loads.

I'll finish up with a couple more hints on tweaking CS4328s. This device will work fine with very simple low cost supporting circuits. However it will respond to every improvment in its surroundings rewarding you with more and more music. As always in hi-fi there is no such thing as too good a power supply system. Get those power supply by-pass caps off pins 2, 5, & 16 replaced with Black-Gates, OS-CONs, or low Z Panasonics ASAP. Careful regulator upgrades will be richly rewarded. Also note pin 28 VREF. The caps off this pin bypass the voltage reference the DAC is using and have a very audible effect. Again low Z types are called for. I liked 0.1uF COG ceramic + 10uF BG. Also heard good resuls using audio quality plastic film types (MITs were favored back then) if they can be made to fit. Try and keep the ground side of the VREF by-pass caps terminated near the CS4328's pin 1 to keep your ground current loops as small as possible. On the X-DAC 3.0 Signature version I soldered the caps leads on the bottom of the PCB directly on the pads for pins 1 & 28.