[耳機撚]召集大耳牛、枱式耳機系統用家(15)
我係打手 2020-7-4 23:38:16 睇完,分析得好
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基本上講緊balance out 係headphone雖然大power d,但noise會大d, damping factor細一半

我會補充一點係單元本身唔會做到common mode rejection,所以係享受唔到balance所應該有嘅「抗noise優勢」

其實single end只要左右兩邊分開做ground就應該冇crosstalk?

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唔好意思差2毫子 2020-7-4 23:39:10 ground loop
試下將active 喇叭插係atom 同一個拖板上面.
我係打手 2020-7-4 23:42:43 我諗應該係atom 本身設計唔夠好以致兩樣駁曬個時會漏電去speaker,或者係你部atom有問題
最好問下JDS lab呢個係唔係正常
唔好意思差2毫子 2020-7-4 23:43:01 yes. 所以點解佢會推薦line level equipment 用balanced connection
line level equipment有電路去flip phase做到balanced 嘅設計原意。

yes如果唔share ground都可以消除crosstalk.
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我係打手 2020-7-4 23:44:14 唔係要插另一個拖板咩?
唔識咪要問 2020-7-4 23:48:24 我個喇叭lsx嚟,會唔會係佢自己入面有dac+ amp所以關事
唔好意思差2毫子 2020-7-4 23:51:02 唔係的。如果有ground loop而件電器無ground lift switch嘅話。將佢哋插埋同一個ac outlet可以解決.
我係打手 2020-7-4 23:57:02 唔應該關專
可以試咁跟-$0.2巴打個做法先,排除ground loop 可能
唔得就應該係atom漏咗d noise過去lsx然後比lsx放大咗,咁就要問下JDS lab
唔識咪要問 2020-7-5 00:02:17 好我send email問問佢
唔該哂巴打
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唔識咪要問 2020-7-5 00:12:32 試左了,都係有聲,send email問佢地算
唔好意思差2毫子 2020-7-5 00:19:03 咁無計了。祝好運.

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做遊戲開發無前途 2020-7-5 00:20:47 DT 250 點解會用7 pin
llrrg 頂多五個
另外果兩個有咩用?
唔識咪要問 2020-7-5 00:24:29 Sorry for the confusion. Yes, you must disconnect headphones to activate the RCA outputs.

When headphones are plugged in, the RCA Outputs are floating (no connection inside of the amp besides ground). Thus, you are definitely describing a form of high frequency ground loop between the source and speakers. A ground loop isolator will likely help. Using different outputs rarely resolves this behavior.

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係ground loop, 不過個ground loop inside the atom
吹漲
唔好意思差2毫子 2020-7-5 00:26:44 咁咁平算係咁啦。headphone amp嚟講2000蚊以下霸主.
JDS都覆得好快喎! 話說巴打atom係邊度買係香港我搵過唔見有。
如果上官網買連埋運費又無咩so.
唔識咪要問 2020-7-5 00:29:02 我直接官網買啊,+10幾美金運費都仲係幾抵玩啊我覺得
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因為貴少少既 789都係要計運費
做遊戲開發無前途 2020-7-5 00:29:49
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有冇人睇得明L+L- R+R- 另外果三條有咩用
唔識咪要問 2020-7-5 00:34:06 其實我自己都識解決,就係喇叭飛地線駁adapter插,不過一燒我就成個setup 齊收皮
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所以都係麻煩啲用先插算了
唔好意思差2毫子 2020-7-5 00:40:12 10幾蚊又可以接受喎。
我早排係Audeze買嘢,買啲earpad好輕。
54蚊美金運費。。重要只係fedex inernational economy.
唔好意思差2毫子 2020-7-5 00:44:37 common ground.
唔好意思差2毫子 2020-7-5 00:49:46 佢呢度係3種wiring嚟架喎. 左中右係3種唔同線嘅wiring.
唔好意思差2毫子 2020-7-5 00:56:49 sorry睇錯。 呢個wiring係一條6芯1網嘅線嘅wiring.
中間同右面係socket male/female plug 有6個terminal + shield/ground
左面應該係headphones?

中間同右面都顯示條線係有6芯1網,但無講5,6,7 terminal係駁去邊所以唔知
B24-543.03-00又唔知係咩嚟。圖無講明。

所以呢樣圖只係話你知中間同右面係唔同嘅wiring方法。但無講socket另外一端系駁咩。 所以唔知.

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我係打手 2020-7-5 01:02:20 加個rca switch會唔會簡單d?
唔用個時switch去冇駁野個port
唔好意思差2毫子 2020-7-5 01:02:39 我又諗到啲嘢。對headphones係咪有mic?
如果係就解釋到點解unbalanced有6條線。
中間個wiring 就係連埋mic.
6係 mic+
7係 mic-
5係 shield

而右面就係無mic嘅線. 所以5,6,7 terminal唔用.
唔識咪要問 2020-7-5 01:09:19 其實呢啲唔駁電既switcher會唔會影響音質?
定我用preamp會好啲?
唔好意思差2毫子 2020-7-5 01:11:04 理論上會,但實際上唔會。除非你條線加多20米長.
用preamp應該都解決唔到ground loop問題。 反而JDS 講嘅isolator 有機會ok. 我試過用usb isolator 係work嘅。