JimmyNgai 發表於 2015-10-27 13:53 static/image/common/back.gif
雖然可以入電池出街用，但以我自己黎講就好少會咁做，因為O2話細都唔係細到可以放入褲袋o個種。我通常都 ...
我係屋企用都要用電池的,因為可以坐定定聽款的地方無插蘇可用.{:1_255:}
收到massdrop email:
We would like to let everyone know that we have added a new gain option to this drop. The default gain configuration was originally 2.5x (low) and 6.0x (high), but we are now also offering the option of 1.0x (low) and 3.3x (high). This was communicated in the discussion, but we realize that many people were not aware of this new option until after the drop ended.
有訂既師兄會唔會轉去option 1.0x (low) and 3.3x (high) ?
我想轉,因為睇過一些評論話用6.0x(high)時,控制力會變差,咁不如要個有1.0x(low)既option.{:1_332:}
joeywlam 發表於 2015-11-3 10:05 static/image/common/back.gif
收到massdrop email:
We would like to let everyone know that we have added a new gain option to this...
2.5x 推一D大耳都夠力，但如果CHING會用IEM，1.0x 會好D。
另外如果訊源係用如ODAC revB輸出電壓去到2.1VRMS，而又需要用到high gain，3.3x 會好D，因為再高的話大音量時會clip。
但如果訊源電壓較低，例如細過1VRMS的話，咁6.0x 會好D。
所以2.5x/6.0x定1.0x/3.3x，視乎CHING會唔會用佢黎推IEM同訊源係咩。{:1_249:}
JimmyNgai 發表於 2015-11-3 12:10 static/image/common/back.gif
2.5x 推一D大耳都夠力，但如果CHING會用IEM，1.0x 會好D。
另外如果訊源係用如ODAC revB輸出電壓去到2.1V ...
我將會用fiio x5ii 既line out>O2>panasonic RP-HD10,
fiio x5ii line out 大約有1.5Vrms,
RP-HD10 (18ohm, 92dB/mW)
之後打算買一隻 open-back 既 AKG 712pro 或 K7XX.
請問以上配置是否應改1.0x?
joeywlam 發表於 2015-11-3 10:05 static/image/common/back.gif
收到massdrop email:
We would like to let everyone know that we have added a new gain option to this...
我已經要求佢轉做1.0X，因為我預期係MOVABLE，在家有枱AMP，反而在外主要係推耳筒仔，太大力會令佢Distrot
joeywlam 發表於 2015-11-3 19:31 static/image/common/back.gif
我將會用fiio x5ii 既line out>O2>panasonic RP-HD10,
fiio x5ii line out 大約有1.5Vrms,
RP-HD10 (18o ...
K712Pro/K7XX靈敏度係105 dB SPL/V，比RP-HD10難推，如果想將佢推到115 dB SPL（一個已經好夠大聲的level），你需要大約3.2 Vrms，除番你個source的1.5 Vrms，其實2.1x gain已夠用。即係話轉1.0x/3.3x的話，CHING你可能要用Hi-gain先滿足到，但如果用2.5x/6.0x的話Lo-gain已經夠用。另一邊廂，如果想將RP-HD10推到115 dB SPL，你需要大約1.9 Vrms，即係1.3x gain就夠。
但如果CHING聽歌唔鍾意開得大大聲，以目標110 dB SPL黎計的話，K712Pro/K7XX需要1.2x gain，RP-HD10只需要0.7x gain。所以唔理CHING聽歌係咪鍾意開到大大聲都好，似乎2.5x/6.0x呢個option開Lo-gain會岩你個配置多D（1.0x有可能太低但3.3x又太高）。{:1_249:}
JimmyNgai 發表於 2015-11-4 15:16 static/image/common/back.gif
K712Pro/K7XX靈敏度係105 dB SPL/V，比RP-HD10難推，如果想將佢推到115 dB SPL（一個已經好夠大聲的level ...
多謝師兄的詳細講解,大致明白了怎樣選擇.{:1_351:}
剛剛收到，師兄果然好介紹{:1_335:}
我的都到左，正在煲機中，等多兩日先作評論。
我都收到左三日左右,不過最大問題係佢跟黎個AC件火數問題
他標個讀數只係"剛好"到最低要求...仲要空載去計!
同場加一隻15VAC牛
呢隻先係用得過的...
