why 發表於 2007-4-13 18:30:17

請教KK MODI SIR RCA轉XLR

KK, MODI師傅,
本人剛購入一部Accuphase A30 Power Amp,但前級及AV AMP均為RCA輸出，而新後級只有RCA及XLR輸各一對，前級及AV其中一部需以RCA轉XLR與A30接駁，友人已允代製一對線，不知RCA轉XLR對機子有否損害?
另，前級可否MOD 為XLR輸出?
如蒙指教，不勝銘感!

muka 發表於 2007-4-13 20:56:39

ＸＬＲ和ＲＣＡ好像不可同時使用。

dynamicdog 發表於 2007-4-14 00:08:45

http://www.hififever.com/forum/files/thumbs/t_p1060649_252.jpg

加隻咁既野俾部A30咁咪得Lor

dynamicdog 發表於 2007-4-14 00:15:07

小問題 邊度洗KK大師, MODI大師, 2位老人家出手

DOG幫你搞電佢

A30 XLR / RCA in可以同時插住2部前級

將XLR in 加對 上圖的轉插就變左 RCA in. is Work!! 當然發揮唔到行XLR的威力!

這方法唔會傷機

至於你友人幫你整左條線, 如果無駁錯線, 當然都Work!

幾方便! 聽歌睇戲用同一對喇叭同一部後級, 一按OK

kk_ho 發表於 2007-4-14 01:29:12

Why,

1. Pre-amp RCA --> power amp RCA in, you can use normal cable without mod.

2. Pre-amp Balance out --> power amp RCA
Take + and GND to power amp RCA is OK

3. Pre-amp RCA to power amp Balance
Add a circuit to invert the +ve to -ve.
i.e. RCA --> circuit --> HOT GND COLD --> Power amp XLR.
You can use TI DRV134 un-balance to balance op-amp

http://focus.ti.com/docs/prod/folders/print/drv134.html

4. Pre-amp XLR --> Power XLR
Simple cable connection.

Any problem?

KK.HO

dynamicdog 發表於 2007-4-14 20:33:01

嘩!!

KK Sir 好專業好詳細...

又學到野啦

why 發表於 2007-4-14 22:40:53

Thanks K.K and everyone.

K.K Sir,
Should I buy two DRV134 Circuits?

kk_ho 發表於 2007-4-15 00:34:25

Re: Thanks K.K and everyone.

Why,

I have IC on hand, you can buy and wire wrap the circuit, not too complex.

OR,

http://www.diyzone.net/diy/preamp/drv134_kit.htm

http://www.diyzone.net/diy/preamp/drv134ap.htm

Please contact Admin to purchase.


OR, join or our 從零開始學 DIY course.......

KK.Ho
頁: [1]
查看完整版本: 請教KK MODI SIR RCA轉XLR