电源改造，有实在的理论依据么？ [复制链接]

FP-Gold-N/S 电源线
该电源线是采用目前最先进的真空冶炼技术，将5%的4N纯金和95%的4N纯银在熔融状态下均匀掺和冶炼而成的多股合金丝以特种工艺与多股无氧铜丝相互绞合而成。该线具有特高的电流承载力和快捷的传导速度，线间绝缘极佳。线身外部特别设计了一层镀银金属屏蔽网，以最大限度地杜绝外界电磁波可能带来的不良影响，有效改善音乐重放时的纯净度。所选用的优质医用级电源插头更能确保与电源供应端的良好接触。
实际试听该线，您会发现该线的电流承载力特高，音乐的质感与分析力有明显进步，音乐更加透明，空气感、空间感更加明晰。全频段反映迅速，动态凌厉。声场宏大无匹，尤其低频潜得更深，弹性更佳。
FP-Gold-S 特别采用美国 Wattgate 音响专用插头。
长度：1.5m （可按要求订做）
FP-Gold-N/S 电源线技术指标

这是新德克网站的电源线说明，我看主要特点是：1.传导速度。2.线间绝缘。3.电流承载力。4屏蔽外间电磁干扰。5.医用级电源插头更能确保与电源供应端的良好接触。
这些对音频回放有无人耳能感知的影响？比如传导速度、线间绝缘和电流承载力一般合格的电源线应该都不是问题的。

基于“精确波形修正技术”的德颂X500/800/1200纯净交流电源，通过实时监测交流电波形并高速修正波形中出现的任何偏离正弦波轨迹的误差，来降低电源波形失真、消除干扰和稳定电压以获得高度纯净的交流电能。

以低内阻高速放大器、数字式低失真基准信号源以及高储能电源为主要组成部分的“精确波形修正”系统以快于市电周波数千倍的响应速度在各时间点上对电源波形进行实时、连续、精确的波形幅度修正，从而保证X500/X800/X1200输出波形失真甚低、电压稳定度极高的完美正弦波。

X500/X800/X1200以低失真纯净正弦波为参考标准，在精确修正输入的畸变波形的同时还移除了市电电压中的直流成分，使输出电压的正负半波精确相等，此举可把大功率高级放大器因市电中的直流成分引发的变压器噪音降至人耳的听阈以下。

X500/X800/X1200通过高性能优质变压器完全隔离输入和输出回路，隔离供电可以大幅降低或克服广泛存在于影音系统或精密测量系统中的地线漏电干扰，以获得至纯影音品质或准确真实的测量结果。

X500/X800/X1200输出的视在功率取决于负荷，在通风散热条件良好的环境下，分别可达500VA\800VA\1200VA,峰值输出能力更可达最大额定输出的2倍。X500/X800/X1200内阻极低，在额定功率范围内其输出电压的变化极其微小，可消除负载功率变化时因供电线路内阻引起的电压波动，其超强的瞬间供电能力和稳定的输出电压为音乐播放提供最为准确的动态响应，其敏捷的响应速度为传统交流稳压器所无法比拟，绝无普通交流电源处理器为人诟病的动态压缩现象。在额定输出功率时的电效率超过80%，远高于线性（交流-直流-交流）再生式交流电源，不但发热量低，在相同体积（重量）下，X500/X800/X1200可以比前者提供更加强劲的功率输出。

完全以线性模式运行的X500/X800/X1200，能卓有成效地把原始电源波形的失真大幅降低，由于线性工作方式的先天优势，X500/X800/X1200输出的电压中完全没有开关式交流电源处理器所难以克服的因脉宽调制（PWM）方式所引发的高频噪声和电磁（EMI）辐射。

X500/X800/X1200运用德颂独有的“同步周波处理”技术，使输出电压与输入电压始终保持频率和相位的精确一致，应用于影音系统时不会产生视频滚条及音盆零位摆动；用于测量系统时，可避免不同供电频率的差拍干扰对测量示值的稳定显示。

X500/X800/X1200的“精确波形修正”之工作方式具备十分强大的噪声抑制能力，加上内置输入双模滤波器及输出差模滤波器后，它们降低线路干扰的显著功效几近立竿见影；借助直观的精密测试设备（如“德颂”CT-1电能品质测试仪）来观测高污染电能经X500/X800/X1200处理前后的品质变化，它们巨大的差别通常会使观测者认真审视供电问题。

X500/X800/X1200内置高稳定数字显示表，可精确地实时显示“输入电压”、“输出电压”及“输出电流”。“输入电压”显示功能除了供观测输入电压外，还可用于观测大功率输电时线路电压的波动情况；“输出电流”显示功能则可以间接地帮助您观测器材的耗电情况，操作使用十分方便。

X500/X800/X1200使用巨型铝镁合金散热器以完全宁静的方式来散逸电路工作时所产生的、与输出功率成正比的热量；当通风条件不良而使散热器超过警戒温度时，会自动切断输出电压。与使用风扇散热的工业级电源处理设备相比X500/X800/X1200有更高的可靠性和稳定性，当使用环境对噪声有严格要求时，X500/X800/X1200纯净电源是替代风扇式电源处理设备的最佳选择。

X800/X1200设有二组经独立滤波的电源输出插口（每组四个输出插口），以使连接至不同组别插口的设备相互间的影响降至最低，通常的使用方法是将模拟和数字设备分别连接至不同组别插口，或将小功率和大功率设备分别连接至不同组别插口以降低相互间的干扰。X500提供4个输出插口。

X500/X800/X1200的设计完全符合安全规范，机内设有高电压浪涌抑压装置，能可靠抑制来自电力线路的高电压浪涌和电压尖峰（如雷击电涌等），其铝镁合金外壳与安全接地连通，确保在任何情况下都处于可靠的安全保护状态。当输出功率达到或超出设计容限时，蜂鸣器会发出报警声，严重过载时，它们会自动切断输出电压以保证其不受损害，并需手动重新启动方可恢复供电，以期引起使用者重视。

      X500/X800/X1200适用于要求高质量供电及没有噪声干扰的场合，如高保真视听室、精密实验室等。对于精密测量环境，X500/X800/X1200可作为标准电源为各种设备提供纯净的电力。X500/X800/X1200可以单机使用，也可以用多台来组成较大的电源管理系统。

   技术规格：

项   目
型      号

X500
X800
X1200

工作频率：
50±0.5 Hz

额定输出功率

（短时最大输出）
500 VA

（1000 VA）
800 VA

（1500 VA）
1200 VA

（2200 VA）

额定输出电压
220 VAC±1%

额定输出电流
2.3 A
3.7 A
5.5 A

峰值输出电流
25 A
40 A
60 A

输出电压失真
≤0.5%（市电失真≤5%时）

输入电压范围
192～252 VAC

电压调整率
≤1%

负载调整率
≤1%

显示器精度
示值×1%±1

空载耗电量
≤35 W
≤40 W
≤50 W

冷却系统
大型铝镁合金自然对流散热器

外形尺寸

(mm)
230(W)×306(H)×396(D)
230(W)×356(H)×396(D)
230(W)×406(H)×396(D)


这是德颂的纯净交流电源，是不是就起到了拉专线的作用？售价8000多，个人认为如果真要改善电源，花几千买线，还不如买这个，呵呵

我刚刚看了几个国内hifi品牌的网站：声雅、新德克、德颂、欧博、钟神，只有新德克和钟神的产品目录里有电源线。

原帖由 2010 于 2010-8-13 14:48:00 发表 [quote] 原帖由 江南流云 于 2010-8-13 13:50:00 发表 这是德颂的纯净交流电源，是不是就起到了拉专线的作用？售价8000多，个人认为如果真要改善电源，花几千买线，还不如买这个，呵呵 支持这个观点，对症......

我觉得这玩意就是个稳压器

这帖子认为电源的改造是值得的，但没看到关于发烧线的说法，继续研究中。
SUPPLIER Power Supply…is it Really worth the extra cost?
Published November 12th, 2008 in Firestone Audio General, Fubar USB DAC, Headphone Amplifiers

SUPPLIER Power Supply……Is It Really Worth the Extra Cost?

This is a great question and one we get quite often. Many people just can’t fathom how a power supply can help improve the sound of an audio component. This article applies to all Firestone components that are compatible with the Supplier. (The Supplier is not for use with the Tube Head, Little Country III and Big Joe)

SUPPLIER PSU Upgrade
Before we talk specifically about the SUPPLIER Power Supply Upgrade lets talk a little about power supplies in general. If you look at the history of Hi-Fi one can see the continued progression of bigger, better and cleaner power supplies being added to high-end components. If you examine any high-end component you’ll find that clearly half the cost or more is in the power supply section. One could argue that improvements in electricity are the source of all improvement in Audio.

If you could order up the ideal power supply it would be one that provides unlimited current while the voltage remains perfectly constant. Nice in theory but not practical in the real world as every type of power supply has limitations that stray from this ideal. As with most any audio component, the Firestone products use DC voltage to power their circuits. They require a clean, stable 24 volts DC to sound their best.

Lets look at the three types of power supplies commonly used in audio

Batteries
Either “one time use” or rechargeable

Batteries, especially the rechargeable type, are pretty much an ideal power source for audio components if they are correctly sized. A battery is a reliable source of clean, quiet power. That is if the battery is large enough to power the component for a reasonable time without significant discharge. One problem is that the impedance of a battery increases as it discharges, the higher the impedance the faster the rise in voltage ripple. If the frequency of the voltage ripple is in the audio range then this can cause undesirable noise to be heard from the component.

Another obvious con for battery powered systems is the constant requirement for either replacement or recharging.

Wall Wart power supplies
This is the little black box supplied with your Firestone Audio Component (FAC)

The standard wall wart power supply is a non linear, unregulated power supply; these are the simplest and least expensive solution for powering your Firestone product.

With the wall wart you have 120VAC going in and 24VDC coming out (assuming a stable 120VAC source). It includes a rectifier to convert the AC power to DC and a smoothing circuit to help tame the pulsating DC. Unfortunately there is still a significant amount of ripple on the DC side and the small space available in most wall warts limits the amount of filtering that can be used to reduce the ripple. The result is degradation in the DC power and a corresponding degradation in audio quality.

Another problem with an unregulated power supply is that the output voltage will rise and fall with changes to the input voltage. Any variation on the AC input side will be directly translated into DC variation on the output side. If your AC wall power has hash, surges, spikes, brown outs or some other ugliness; this will appear on the DC side as well and degrade the audio quality. These DC artifacts are known as noise and ripple. Fortunately your FAC is equipped with ”power regulation” and “low pass filter” circuits to help minimize the bad effects of this.

Last but not least is the low power output capability of the wall wart. Electronics that are “power challenged” tend to sound thin or flat at frequency extremes and don’t have the oomph to follow the peaks and large dynamic swings in the music. The FAC’s as with any audio component will draw considerably more current during intense passages in the music; this is when the wall wart may not have the jam to follow along.

Linear, Regulated Power Supplies
This is the SUPPLIER Power Supply upgrade.

To help deal with the AC voltage variation and other assorted nastiness from the wall power, the Firestone engineers designed the SUPPLIER power supply. The SUPPLIER is a linear, regulated power supply so this means the DC output voltage is largely independent of the AC input voltage. It is designed to output a stable 24 VDC despite variances to the AC input voltage. Is it perfect? Of course not, but it’s a major improvement over the relatively large voltage swings seen at the DC output of a wall wart.

The Supplier also has vastly superior filtering for both DC ripple and noise. This is where you’ll experience a majority of the increase in sound quality; tighter bass, clearer highs and a better defined midrange. To my ear the biggest improvement is in the dynamic contrasts, dynamics are noticeably improved. Also, if your system can reveal it you’ll experience an increase in the magical, low level detail as the line noise and hash present with the wall wart are filtered away by the Supplier.

The SUPPLIER also has much higher power output and superior reserve power compared to the wall wart. Its high current output effortlessly follows the music regardless of dynamics and helps your FAC deliver the very best from the music.

So is it really worth the extra cost?
YES, with one exception. If you are using the Fubar II with a low resolution system then the improvements may not be as apparent. I personally can detect the addition of the Supplier 100% of the time in my system in an A - B - A test; all I have to do is listen to the low level detail in the music

The Supplier is highly recommended for the Spitfire, Cute Beyond and Fubars!

Want more? Here is a great professional review on the Supplier Power Supply.

Enjoy!






--------------------------------------------------------------------------------

2 Responses to “SUPPLIER Power Supply…is it Really worth the extra cost?”  
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1 Alvador
Mar 18th, 2009 at 12:45 pm

This advice is really going to help, thanks.

2 Hifiturk
Jul 26th, 2009 at 2:47 am

good article.
thanks.

This is the SUPPLIER Power Supply upgrade.

To help deal with the AC voltage variation and other assorted nastiness from the wall power, the Firestone engineers designed the SUPPLIER power supply. The SUPPLIER is a linear, regulated power supply so this means the DC output voltage is largely independent of the AC input voltage. It is designed to output a stable 24 VDC despite variances to the AC input voltage. Is it perfect? Of course not, but it’s a major improvement over the relatively large voltage swings seen at the DC output of a wall wart.

The Supplier also has vastly superior filtering for both DC ripple and noise. This is where you’ll experience a majority of the increase in sound quality; tighter bass, clearer highs and a better defined midrange. To my ear the biggest improvement is in the dynamic contrasts, dynamics are noticeably improved. Also, if your system can reveal it you’ll experience an increase in the magical, low level detail as the line noise and hash present with the wall wart are filtered away by the Supplier.

The SUPPLIER also has much higher power output and superior reserve power compared to the wall wart. Its high current output effortlessly follows the music regardless of dynamics and helps your FAC deliver the very best from the music.

So is it really worth the extra cost?
YES, with one exception. If you are using the Fubar II with a low resolution system then the improvements may not be as apparent. I personally can detect the addition of the Supplier 100% of the time in my system in an A - B - A test; all I have to do is listen to the low level detail in the music

The Supplier is highly recommended for the Spitfire, Cute Beyond and Fubars!

Want more? Here is a great professional review on the Supplier Power Supply.
这一段似乎是说线性的、稳定的电源改造设备是必要的，呵呵，外语够呛。。。

原帖由 atcxzc 于 2010-8-13 20:03:00 发表 [quote] 原帖由 玉生烟 于 2010-8-13 18:38:00 发表 [quote] 原帖由 atcxzc 于 2010-8-13 18:28:00 发表 [quote] 原帖由 玉生烟 于 2010-8-13 15:51:00 发表 [quote] 原帖由 老浦东 于 2010-8-13 15:24:00 发表 [quot

流体力学你也没概念，导体的电阻你也没概念。。。。没法交流。
楼主也一样，这么多人讲的和翻书查一查，已经把问题说得很清楚了。不知道楼主是真不懂，还是故意不懂，再说下去也没意思了。
玩音响玩的就是无法测量的那部分，楼主也没入门，偏要求量化和理论，缘木求鱼。
哈哈，兄弟你真可爱，这玩意和流体力学有啥联系？你说来听听。^_^

从这个帖子里我还是学到了东西的，感觉前端电源的处理是有作用的，主要是电压波动、电磁干扰等的处理吧，所以拉专线和电源稳压滤波器等还是有效的，这是有道理的，但发烧电源线的作用我认为没多大，能用耳朵听出来的本人深表佩服！
楼主我给您提个醒，您这篇帖子主要是讨论电源改造的理论依据，没必要局限在发烧电源线这一小块，什么滤波器、电源净化器、拉专线等等都是可以讨论的，不要在一根发烧线上纠缠不休，范围可以扩大些，当然发烧线也应该继续讨论的，呵呵。
建议版主将此贴长期置顶，让大家深入讨论，我想这样的讨论是有益的，不管结果如何，总归有些收获的。

原帖由 老浦东 于 2010-8-14 9:43:00 发表 电源线是不必多争论的，很容易分出高下。 而要把电源处理好才是大学问！！！

兄弟，现在争论的是发烧电源线的依据，你说很容易分出高下，拿得出依据吗？呵呵，你的说法和本贴讨论的内容不相干。
你说把电源处理好才是大学问，请问处理过电源后还要不要用发烧线，为什么？

个人认为，如果重要的项目应该会列出来的，呵呵。