- #22 [254mm], 16-05-31 08:15有時廠家怎會輕易对 d 散客講真話,尤其答話的,也只是普通行政人員,佢自己也未必清楚全公司運作,ti 各地咁多分廠,難保有出过 ceramic 也未定,有时,真是盡信書不如無書。
- #23 [klou], 16-12-24 16:33I am using Opera CD2.2, it has 3 OPA2604, do I need to change it all?
there are 2 AD T634 IC on the analogue output board, what are they.
any ching can help? - #24 [klou], 16-12-24 16:47I am using Opera CD 2.2
But it has 3 OPA2604 inside and 2 unknown IC called AD T634.
If I want to change the Op Amp, do I need to replace all 3 OPA2604? -
- #25 [254mm], 16-12-24 16:53first, do you know how to measure the supply voltage +/-?
- #26 [254mm], 16-12-24 16:542604 can work on +/-24 Volts DC whilst most of other ICs CANNOT!!
- #27 [254mm], 16-12-24 18:15AD T634 cannot be found in Googles!!
- #28 [klou], 16-12-26 18:56Hi 254mm
How to measure the voltage? - #29 [254mm], 16-12-26 19:11Use DC Voltage Tester, Black Probe attach to Ground, Red Probe Check Pin 4 & 8 of OPA2604, see the result, you don't even know how to check the voltage, how can you mode your CD player, you will probably damage it instead!!
最後修改時間: 2016-12-26 19:12:27 - #30 [klou], 16-12-26 19:51OK, will try it out tonight. I think I can manage a change of an IC on an IC socket.
- #31 [klou], 16-12-26 22:50It's only + - 12V. I think most Op Amp should be able to handle it.
- #32 [254mm], 16-12-26 22:54OK then
- #33 [klou], 16-12-26 23:07Any good op amps suitable for this CD which has XLR output?
and where can I get them ?
Many thanks for your advice in advance - #34 [254mm], 16-12-26 23:31look for Opamp ICs from Anolog Device which are more musical and natural than BBs
- #35 [254mm], 16-12-26 23:31get them from RS
- #36 [41450686], 16-12-27 01:05I think the AD chipset is the balance line driver, check the pinout match the drv134 or not. If match you can upgrade. The DAC if possible change to CS43122 same pinout, the sound is better than CS4398 but hard to find a good chip now.
- #37 [klou], 17-01-06 00:00Many thanks 41450686 ching
There are 3 OPA2604 op amps at the analogue circuit, do you know how this is working in a stereo circuit? If I try replacing them , do I need to change all three of them or just the two in front.
Many thanks in advance - #38 [CKKeung], 17-01-06 10:43http://www.partsconnexion.com/opamp_dexa.html?utm_source=getresponse&utm_medium=email&utm_campaign=1express&utm_content=pcX%E2%80%99s+2017+New+Years+Event%3A+40%25+Off+CAMBRIDGE+AUDIO+Azur+851A+Integrated+Amp+%26+DacMagic+Plus+Preamp%3B+25%25+Off+TRU-LIFT+Automatic+Tonearm+Lifter%3B+50%25+Off+Acoustic+Zen+Cables+-+Limited+Quantity+Remaining
http://www.newclassd.com/index.php?page=121&hv=1
http://www.newclassd.com/index.php?page=123&hv=1 - #39 [kk6666], 19-05-20 19:15
- #40 [254mm], 19-05-20 21:58我用 OPA2604 陶瓷, 若 廠話冇出過陶瓷版本, 呢粒 IC 可行 +/- 24 V DC, 我架機用 2604 就係行 +/- 24V 的, 唯一想到要做假, 便是用 2606 的芯片再啤陶瓷, 才做到 耐壓 +/- 24V DC.
- #41 [254mm], 19-05-20 22:26是 2604 的芯片才是. 真係仲有無其它 IC 可行 +/- 24 V 的, 望高人指點
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