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| [#21] Any Radio Craftsmen (RC) User here? Interesting point from John! FYI, the original cap of C500A should be Bumble Bee, if apply MultiCap it should be slightly faster and forward. Anyway, leakage is still the major problem of Bumble Bee...! |
Pilotrol 正式會員218.xxx.xxx.126 |
2006-06-20 08:58 | |
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| [#22] Any Radio Craftsmen (RC) User here? I never have a chance to A/B test RC500 VS Leak TL/12. Tim told me that Leak TL/12 sounds better than RC500...! Believe you and Richard can give me a more details listensing report on this...! |
Pilotrol 正式會員 218.xxx.xxx.126 |
2006-06-20 12:21 |
| [#23] Any Radio Craftsmen (RC) User here? I recalled that several years ago I took my Radio Craftsmen C500A to Vintage Sound to have a Williamson amplifier party. At the time, my C500A never met the circuit. I always remind myself not to comment any gears unless I can confirm it is in good condition and the tight specifications were met. The Bumble Bee always leaks but it sounds more relax to my ears though danger will likely happen :-) |
Gingers 正式會員 218.xxx.xxx.4 |
2006-06-20 13:59 |
| [#24] Any Radio Craftsmen (RC) User here? The Radio Craftsmen looks like a Leak TL/12 Point One, especially a close frame version 12.1 :-) Agree. I recall my C500A came with good-all capacitors.  |
Gingers 正式會員 218.xxx.xxx.4 |
2006-06-20 14:02 |
| [#25] Any Radio Craftsmen (RC) User here? What a new discovery! Believe later period of Radio Craftsman using GoodAll? The Goodall cap should be more transparent and sweeter in mid-high...! Great...! |
Pilotrol 正式會員 218.xxx.xxx.126 |
2006-06-20 14:09 |
| [#26] Any Radio Craftsmen (RC) User here? It was a complete restoration to meet the circuit. Even the four 100R varible attenuator (?) had been replaced for NOS quad. ____________________________________________________________________ Gingers, Here's the schematic of the C500A. Are you referring to the 2x 100R potentiometers per channel? They are one for biasing and one for DC balance.  |
cpsjj 正式會員 203.xxx.xxx.234 |
2006-06-20 14:47 |
| [#27] Any Radio Craftsmen (RC) User here? Gingers, Adjust the bias to read 25V on either cathode terminal as specified by the factory; or otherwise tweak as you like. I'm sure Richard will recommend.  |
cpsjj 正式會員 203.xxx.xxx.234 |
2006-06-20 15:11 |
| [#28] Any Radio Craftsmen (RC) User here? Here's the schematic of the C500A. Are you referring to the 2x 100R potentiometers per channel? They are one for biasing and one for DC balance. --------------------------------------------- CP Yes, one of them was not original and Richard recommended to replace all. You know, Richard is always serious in the restoration :-) Lucky I found a NOS quad :-) BTW, do you have the manual? John |
Gingers 正式會員 218.xxx.xxx.4 |
2006-06-20 16:43 |
| [#29] Any Radio Craftsmen (RC) User here? BTW, do you have the manual? _______________________________________ Here you go. pp.1  |
cpsjj 正式會員 203.xxx.xxx.234 |
2006-06-20 17:28 |
| [#30] Any Radio Craftsmen (RC) User here? pp.2  |
cpsjj 正式會員 203.xxx.xxx.234 |
2006-06-20 17:29 |
| [#31] Any Radio Craftsmen (RC) User here? pp.3  |
cpsjj 正式會員 203.xxx.xxx.234 |
2006-06-20 17:30 |
| [#32] Any Radio Craftsmen (RC) User here? pp.4  |
cpsjj 正式會員 203.xxx.xxx.234 |
2006-06-20 17:30 |
| [#33] Any Radio Craftsmen (RC) User here? pp.5  |
cpsjj 正式會員 203.xxx.xxx.234 |
2006-06-20 17:31 |
| [#34] Any Radio Craftsmen (RC) User here? pp.6  |
cpsjj 正式會員 203.xxx.xxx.234 |
2006-06-20 17:32 |
| [#35] Any Radio Craftsmen (RC) User here? pp.7 |
cpsjj 正式會員 203.xxx.xxx.234 |
2006-06-20 17:33 |
| [#36] Any Radio Craftsmen (RC) User here? pp.8  |
cpsjj 正式會員 203.xxx.xxx.234 |
2006-06-20 17:34 |
| [#37] Any Radio Craftsmen (RC) User here? pp.9 Finish. |
cpsjj 正式會員 203.xxx.xxx.234 |
2006-06-20 17:35 |
| [#38] Any Radio Craftsmen (RC) User here? wa... |
aliu 正式會員 203.xxx.xxx.180 |
2006-06-20 17:39 |
| [#39] Any Radio Craftsmen (RC) User here? CP Thank you very much. Grateful to you for your effort in the scanning and sharing the manual with us here :-) May I have higher resolution copy through email? I hesitate to ask :-) John |
Gingers 正式會員 221.xxx.xxx.70 |
2006-06-20 19:30 |
| [#40] Any Radio Craftsmen (RC) User here? When my C500A arrived................... Were the yellow colour capacitors Goodall?  |
Gingers 正式會員 221.xxx.xxx.70 |
2006-06-20 19:56 |
