DIY CMOY headphone amp

patkwok · 發表於 2012-10-24 12:01

johnnykut 發表於 2012-10-24 10:54
第一次焊到咁真係幾靚
近電解電容有一點電阻位好似有d唔靚,,可能反光問題 ...

師兄眼利

個排電阻係我第一排焊既電阻,焊得真係唔係幾好

唔關反光事

patkwok · 發表於 2012-10-24 12:04

johnnykut 發表於 2012-10-24 11:17
我o個陣唔識野買埋另外兩隻,,
砌完都冇乜點聽,,,係咁改隻cmoy
師兄試下跟住佢地一步步改,,好快 ...

另外兩隻??

我都想跟住改,不過條thread入面好多相都睇唔返,所以比較難跟

patkwok · 發表於 2012-10-24 12:09

billymud 發表於 2012-10-24 11:17
why no OpAmp part number ?
you should use gold-plated IC socket, for ease of OpAmp exchange !
...

套件入面佢地特登磨走的

所以睇唔到。

billymud · 發表於 2012-10-24 12:20

johnnykut 發表於 2012-10-24 11:28
好多牌子既成品機都會磨走opamp號碼,都預左唔係貴野啦~~~
另外亦識得有人因為用左好耐時間試ic,,,拍人太 ...

too bad !....... OpAmps are not secret and many alternatives in market.

have fun to experiment the others.

patkwok · 發表於 2012-10-24 12:27

billymud 發表於 2012-10-24 12:20
too bad !....... OpAmps are not secret and many alternatives in market.
have fun to e ...

I have a 5532DD on-hand and will change it to have a test

johnnykut · 發表於 2012-10-24 12:32

patkwok 發表於 2012-10-24 12:01
師兄眼利

個排電阻係我第一排焊既電阻,焊得真係唔係幾好

其實o個點似假焊,,師兄可以既話補焊穩陣dd~~

另外兩套係RA 1同M47
M47係op+buffer,當時賣貴多30蚊

johnnykut · 發表於 2012-10-24 12:35

patkwok 發表於 2012-10-24 12:09
套件入面佢地特登磨走的

所以睇唔到。

放心,,唔係咩好野,志在俾你開到聲,,低電壓下好過5532
佢地出左幾個月之後就有講,,好似係kia4117咁上下(應該記錯)

jason1969 · 發表於 2012-10-24 14:06

堅呀

patkwok · 發表於 2012-10-24 14:27

johnnykut 發表於 2012-10-24 12:32
其實o個點似假焊,,師兄可以既話補焊穩陣dd~~

另外兩套係RA 1同M47

多謝師兄提點,過兩日再執執

patkwok · 發表於 2012-10-24 14:28

johnnykut 發表於 2012-10-24 12:35
放心,,唔係咩好野,志在俾你開到聲,,低電壓下好過5532
佢地出左幾個月之後就有講,,好似係kia4117咁上下(應 ...

我手頭仲有對OPA627AU,不過係單運放。要有轉插用兩粒單運放變雙運放

[訊源] DIY CMOY headphone amp