[閒聊]關於Grado耳機
※ 引述《lockeedgar (蒼)》之銘言:
: 標題: [請益] 請推薦適合的耳機
: 時間: Tue Sep 29 16:46:27 2009
: → vpjack:這你就錯了,只要是G家的作品都要考慮會吵到人..... 09/29 18:03
: → elysion:g家作品號稱攜帶用小型喇叭呢。雖然有個真的小型喇叭k1000 09/29 18:11
看到這段就順便聊聊無用小知識好了
一般耳機的設計取向是振膜越輕越好,音圈越細越好,單體運動質量越輕越好
這樣才能有漂亮的頻寬和瞬態反應
Grado的設計思維很不一樣
強韌的、不薄的振膜、導電性能好的音圈、輔以制振性能優良的外殼
很容易"響",目的在於能夠輕鬆的推動大量的空氣,動態範圍容易就拉出來
也因此Grado家耳機對比同等級的耳機總是特別的活潑、生動、熱情
這樣的設計理念其實可以看出一些蛛絲馬跡
以當年奠定GRADO耳機根本設計的HP1000而言,最初是要配"喇叭端子轉接器"
(其實只是電阻)一起賣的
一直到John Grado,都還大大方方的並聯一堆SR225單體來作喇叭用
套用李昂的話 : 沒辦法,我家的耳機單體太猛了 XD
不是說承受功率很大,事實上Grado耳機承受功率蠻小的
而是說Grado耳機單體能推動的空氣量高人一等,也因此串個電阻,計算好就能並聯
起來當喇叭單體用,其他家的耳機可不能這麼玩,在燒音圈之前會先卡圈的 XD
所以同樣是低阻抗、高靈敏度,在一些電氣特性上
GRADO並不能和現代流行的一些日系耳機一概而論
要說的話反而比較接近一些70年代的vintage headphone
像是Beyerdynamic DT48或Marantz SD-5
以上是今日的無用小知識 <(_ _)>
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※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 114.41.192.146
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※ 編輯: takase 來自: 114.41.192.146 (09/29 21:02)
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首先理解一下何謂暫態,或瞬態反應
最簡單的講就是單體的加速度
事實上這是個很麻煩的問題,一定程度超出我的能力範圍
一方面是喇叭本身量測就找不太到一個標準
一方面是對喇叭的暫態反應的解釋不能完全套用在耳機上
.........這樣講好像很頭大的樣子
總之決定暫態反應表現的原因有很多,振膜的質量只是其中之一
加速度"夠快"不表示就 "夠穩", 就好像飆車一樣,飆得快也要煞得穩
的確振膜質量重會拖到加速度的快慢,但是如果振膜本身有一定質量、強度,配合適當
的阻尼處理,反而能夠煞得更"穩"
再來就是耳機振膜的質量相對於喇叭還是非常輕的....有時候更快的暫態反應我們不一定
聽得出來,但是更穩的暫態反應絕對是有好處的
好吧.....上面那些我講得很心虛,所學不夠 orz
※ 編輯: takase 來自: 114.41.192.146 (09/29 22:04)
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