音樂大廳 Forum Index 音樂大廳
Ruleless
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

USHER DA20ST

 
Post new topic   Reply to topic    音樂大廳 Forum Index -> 技術交流廳
View previous topic :: View next topic  
Author Message
GFC
極資深會員


Joined: 27 Mar 2005
Posts: 1273
Location: taichung
PostPosted: Thu Jul 29, 2010 7:13 am    Post subject: USHER DA20ST Reply with quote
USHER DA20ST這台機器.小弟想應該有許多網兄聽過或擁有過.這機子每一聲道用了5顆OP.比較少見.不知這5顆OP是否依序為:I/V--LPF--BUFFER--LPF--AMP?
有網兄改過此機嗎?還是更換過OP?可否分享一下.謝謝!
Back to top
View user's profile Send private message
EricChien
正式會員


Joined: 02 Jun 2005
Posts: 129
Location: 台北
PostPosted: Thu Jul 29, 2010 6:03 pm    Post subject: Reply with quote
很久以前曾經擁有過, 印象中是照PCM63 的PDF 公板線路, 最末端再加一級OPA627 做訊號放大輸出.
Back to top
View user's profile Send private message
dewa
見習員


Joined: 02 May 2005
Posts: 4
PostPosted: Mon Aug 02, 2010 7:58 am    Post subject: Re: USHER DA20ST Reply with quote
GFC wrote:
USHER DA20ST這台機器.小弟想應該有許多網兄聽過或擁有過.這機子每一聲道用了5顆OP.比較少見.不知這5顆OP是否依序為:I/V--LPF--BUFFER--LPF--AMP?
有網兄改過此機嗎?還是更換過OP?可否分享一下.謝謝!


以前對過腳位~
印象中是I/V--LPF--2倍放大--LPF--BUFFER~
還是I/V--LPF--BUFFER--LPF--2倍放大~
中間那顆627腳位看一下就知是哪一個啦~
Back to top
View user's profile Send private message Send e-mail MSN Messenger
GFC
極資深會員


Joined: 27 Mar 2005
Posts: 1273
Location: taichung
PostPosted: Mon Aug 02, 2010 8:44 am    Post subject: Re: USHER DA20ST Reply with quote
dewa wrote:
GFC wrote:
USHER DA20ST這台機器.小弟想應該有許多網兄聽過或擁有過.這機子每一聲道用了5顆OP.比較少見.不知這5顆OP是否依序為:I/V--LPF--BUFFER--LPF--AMP?
有網兄改過此機嗎?還是更換過OP?可否分享一下.謝謝!


以前對過腳位~
印象中是I/V--LPF--2倍放大--LPF--BUFFER~
還是I/V--LPF--BUFFER--LPF--2倍放大~
中間那顆627腳位看一下就知是哪一個啦~

謝謝大們的指導.目前使用的OP排列是AD847--2064--627--2064--627.聽起來還不錯.
Back to top
View user's profile Send private message
csw
極資深會員


Joined: 07 Jan 2006
Posts: 1193
PostPosted: Mon Aug 02, 2010 10:01 pm    Post subject: Reply with quote
這台是我的現役機

最簡單的方法

把PCM63換成PCM63K或是K2甚至是Y級

這是BB原廠sorting的分類

每高一級SNR就+3db,效果很明顯
Back to top
View user's profile Send private message Send e-mail Visit poster's website
GFC
極資深會員


Joined: 27 Mar 2005
Posts: 1273
Location: taichung
PostPosted: Mon Aug 02, 2010 11:05 pm    Post subject: Reply with quote
目前使用的是PCM63PK的等級.再往上的等級是如何?
有看到PCM63P-Y.有PCM63-K2.PCM63P-KY.究竟如何排列? 昏
Back to top
View user's profile Send private message
EricChien
正式會員


Joined: 02 Jun 2005
Posts: 129
Location: 台北
PostPosted: Tue Aug 03, 2010 10:21 pm    Post subject: Reply with quote
EricChien wrote:
很久以前曾經擁有過, 印象中是照PCM63 的PDF 公板線路, 最末端再加一級OPA627 做訊號放大輸出.


更正: 查了以前抄下的資料, 亞瑟使用的OP 為OPA627AP => OPA2604AP => OPA604AP => OPA2604AP => OPA627AP , 如雙包裝OP以2個來計算, 一聲道共使用7個OP. (公板則使用4個OP)
Back to top
View user's profile Send private message
Laborer
正式會員


Joined: 30 Mar 2005
Posts: 297
Location: Laborer's Workshop
PostPosted: Wed Aug 04, 2010 10:08 am    Post subject: Reply with quote
GFC wrote:
目前使用的是PCM63PK的等級.再往上的等級是如何?
有看到PCM63P-Y.有PCM63-K2.PCM63P-KY.究竟如何排列? 昏


官方網頁上有排名: PCM63P -> PCM63P-I -> PCM63P-J -> PCM63P-K -> PCM63P-K2 -> PCM63P-Y.

http://focus.ti.com/docs/prod/folders/print/pcm63.html
Back to top
View user's profile Send private message Visit poster's website MSN Messenger
csw
極資深會員


Joined: 07 Jan 2006
Posts: 1193
PostPosted: Wed Aug 04, 2010 11:39 pm    Post subject: Reply with quote
Laborer wrote:
GFC wrote:
目前使用的是PCM63PK的等級.再往上的等級是如何?
有看到PCM63P-Y.有PCM63-K2.PCM63P-KY.究竟如何排列? 昏


官方網頁上有排名: PCM63P -> PCM63P-I -> PCM63P-J -> PCM63P-K -> PCM63P-K2 -> PCM63P-Y.

http://focus.ti.com/docs/prod/folders/print/pcm63.html


就是這資料...以前看過但怎樣找都找不到了~~

感謝Laborer兄
Back to top
View user's profile Send private message Send e-mail Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    音樂大廳 Forum Index -> 技術交流廳 All times are GMT + 8 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group