- #165 [aacheng], 23-06-22 18:02已有答案,拍了01a.但想问问有沒有人装过30/CX301A,因钟意它2v灯,请同01A声音比较.
- #164 [aacheng], 23-06-04 12:43担心CX201a nos胆不是每支都可靠,想用林簌HiFi-101D试吓,又不知灯絲结构及工作点图表,只知灯絲用1A大电流;试过101D请广講吓感受!特别是声音
- #163 [wcw12], 23-02-24 10:03玩DHT胆前級,配前級output 牛是可以有好好的選擇。
18K:600 C.T
直熱胆造前級絕對是最靚聲的!! -
- #162 [Welborne], 23-02-13 19:41我在二手區徵求中
- #161 [hahayanyan], 22-02-04 19:37How's about take the output to a impedance tranformer...... But 8ohm...to xxxx ohm output impedence.. .. Seem a huge different...for power amp input..
If it can be used as a pre amp.. I think it need a loading resistor or some sort of Cow...
Keen to know.. The possiblity.. And how
Haha - #160 [Welborne], 22-02-04 19:05明白,可能調味多個真係推動
- #159 [schmike], 22-02-04 17:45用RMAA Software 加sound card既 line in黎做測試都係咁樣接法,所以我覺得後級咁接可以當前級用係正常,0.2w可以輸出1.2v左右,就睇下夠唔夠推你部後級喇。
參考
http://ixbtlabs.com/articles2/proaudio/test-amplifer-new.html - #158 [schmike], 22-02-04 17:18其實以往做過d class D amp都係串支電阻去推headphone.
參考下網上找既圖,R輸出串返電阻去headphone。
當前級,係喇叭terminal接左10-12R做dummy load,再接去并聯輸出preamp(啫係喇叭正為RCA+, 喇叭負為RCA負),應該都work, 反正用示波器呀,AP都係咁樣接個dummy load度野,應該當前級一樣OK。 - #157 [Welborne], 22-02-04 16:41有朋友話Sakuma san好喜歡咁玩
- #156 [hahayanyan], 22-02-04 13:22#155
interesting question....i keen to know too
the 8 ohm output..have a lot of current (8ohm...)..and wonder..what happen if feeding a low impedance source..............to typlical line stage at input 50kohm range.....
i keen to know.............too
haha - #155 [Welborne], 22-02-04 13:14請教各位前輩
一部只有0.2 watt輸出,帶8ohm輸出牛的直熱膽機,可否也能作為前級之用? - #154 [41450686], 20-08-02 21:55This is the passive preamp circuit. The volume is a ladder type but you may use a normal potential meter. The rest is the power supply, you may use you method to make 265VDC and two 5V DC for the heater.
- #153 [Ax1], 20-08-02 20:35Thanks 41450686 師兄, the schematic is simple, but the passive preamp and power supply look terrific for me......
- #152 [41450686], 20-08-02 00:46UTC LS-50 is 15K : 600ohm in #149 not 10:1
- #151 [41450686], 20-08-02 00:27Power Supply
- #150 [41450686], 20-08-02 00:25This is the passive preamp
- #149 [41450686], 20-08-02 00:22This is the 01A preamp circut. The input is from a passive preamp with an input transformer
- #148 [Ax1], 20-08-01 23:25#140
41450686師兄,你部機有冇線路可以參考吓,唔該你 - #147 [danielyk8], 20-08-01 22:50#146, 放心,睇落一樣,其實唔同插,隊唔落呀,有時拾下拾下隊錯唔出奇,所以要用唔同插
最後修改時間: 2020-08-01 22:51:50 - #146 [Baker.steven], 20-08-01 22:36Daniel,勁呀!您個P.S隻Cannon 插,分左右聱道OR高低壓,如果分高低壓,因住發雞盲插錯,災難性後果!小心呀!
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