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| [#1] Any Radio Craftsmen (RC) User here? RC-2, C-400, C500 are famous hifi products. |
ck2005 正式會員203.xxx.xxx.150 |
2006-05-31 14:06 | |
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| [#2] Any Radio Craftsmen (RC) User here? C550 |
moziallfireox 正式會員 203.xxx.xxx.210 |
2006-05-31 14:51 |
| [#3] Any Radio Craftsmen (RC) User here? RC-2 user |
klcello 正式會員 221.xxx.xxx.178 |
2006-05-31 17:35 |
| [#4] Any Radio Craftsmen (RC) User here? My Radio craftsmen 500A  |
Gingers 正式會員 221.xxx.xxx.223 |
2006-05-31 17:54 |
| [#5] Any Radio Craftsmen (RC) User here? My C-400 Tubes line up: 6J5, 6SN7, 6V6 and 5Y3. 聲好爽, 動態, 分析力不俗!  |
ck2005 正式會員 203.xxx.xxx.150 |
2006-05-31 22:58 |
| [#6] Any Radio Craftsmen (RC) User here? side look  |
ck2005 正式會員 203.xxx.xxx.150 |
2006-05-31 23:00 |
| [#7] Any Radio Craftsmen (RC) User here? Image Testing  |
ck2005 正式會員 203.xxx.xxx.150 |
2006-05-31 23:09 |
| [#8] Any Radio Craftsmen (RC) User here? Front  |
ck2005 正式會員 203.xxx.xxx.150 |
2006-05-31 23:11 |
| [#9] Any Radio Craftsmen (RC) User here? Someone here said the sonic performance of C400 is fast, detail and dynamic. It seems this brand sounds not like traditional vintage tube amps. Any other comment please? What about for RC2 and C500? |
cowboy 正式會員 219.xxx.xxx.56 |
2006-06-05 02:14 |
| [#10] Any Radio Craftsmen (RC) User here? ck2005 & klcello hing, Could you tell where did you get your C400 and RC2? How much you guys to pay for these amps? I always think its seldom to see Radio Craftsmen's stuff appear in the local hi-fi market. Besides, I am curious to know what speakers are you using to mate with your RC gear? |
cowboy 正式會員 219.xxx.xxx.56 |
2006-06-05 02:26 |
| [#11] Any Radio Craftsmen (RC) User here? How's the sound of Radio Craftmen? |
maxbliss888 正式會員 202.xxx.xxx.64 |
2006-06-05 09:03 |
| [#12] Any Radio Craftsmen (RC) User here? I think there not not many Radio Craftsmen users here. |
Gingers 正式會員 221.xxx.xxx.68 |
2006-06-18 20:52 |
| [#13] Any Radio Craftsmen (RC) User here? Craftsmen was a short-lived 1950s subsidiary of Precision Radiation Instruments (PRI), Inc., who owned the Tops label. They also apparently owned Radio Craftsmen, a company that produced radio and hi-fi equipment, and the label gets its name from shortening "Radio Craftsmen." At the top left of the front and back of the album covers, there was a small logo which said "A Division of P.R.I." http://www.bsnpubs.com/pri/craftsmen.html ---------------------------------------------- I don't know ther was Craftsmen LP before :-)  |
Gingers 正式會員 221.xxx.xxx.68 |
2006-06-18 20:55 |
| [#14] Any Radio Craftsmen (RC) User here? Posted by Modegard ( A ) on April 26, 2004 at 16:43:16 In Reply to: Craftsmen C550 posted by TnT on April 26, 2004 at 15:44:22: I have a pair of C500As and a pair of C550s. The C500s are triode amplifiers with output in the range of 12 to 15 watts per channel. They date from 1952/53 or so. The C550s produce more power, about 25 watts per channel. The C500s are generally preferred. They were supposedly designed by Sid Smith before he went to work for Marantz. Mr. Smith was the designer of many of the famous Marantz tube amplifiers. The C550s are ultralinear amplifiers, hence the higher output. I recall these were the final amplifiers produced by the classic Radio Craftsmen company. They date from 1954. They were made after Sid Smith left Radio Craftsmen. The C550s are more rare in my experience. The transformers are smaller in the C550s. VTV had a short blurb on the C550s compared to the C500s. I prefer the C500s, in my case C500As, to the C550s, but the C550s are nice amplifiers too. -------------------------------------------- """"They were supposedly designed by Sid Smith before he went to work for Marantz""""" WHO can advise me whether the above statement is true? Model 1走紅以後，馬蘭士也酗]知道自己的技術缺陷，於是聘請Sid Smith和Sequerra兩 位電子技術專家，幫助他設計巧鬩驉C在這兩位專家和一位專門繞製輸出變壓器的老技師的 鼎力幫助下，馬蘭士推出了一系列傳奇名器，如Marantz 2單聲道後級、Marantz 7立體聲 ... http://www.hwit.net/2005/11/09/20051109061006.html """"Licensed under U.S Patents of Western Electric Company"""" May someone tell me the relationship between the Radio Craftsmen & Western Electric Company?  |
Gingers 正式會員 221.xxx.xxx.68 |
2006-06-18 21:06 |
| [#15] Any Radio Craftsmen (RC) User here? http://db.audioasylum.com/cgi/m.mpl?forum=vintage&n=87257&highlight=sid&session= More discussions on Radio Craftsmen :-) Posted by Gerry E. ( A ) on November 04, 2004 at 09:41:36 In Reply to: radiocraftsmen c500 posted by kbuzz on November 03, 2004 at 12:59:17: I have owned almost all of the Mac and Marantz amps, but the Craftsmen C500 is my choice. The Marantz model 2s are great too, but the C500 sounds at least as good (probably better), but for a lot less money. The output power differential between them is trivial, unless you use low sensitivity speakers. Yes, it should be noted that Sid Smith did some of the design work on the C500 and the majority on the Marantz 2. The "problem" with the C500 is that they are often sold as single mono amps and two are rarely the same (parts). Actually, this isn't a problem. Be patient and get two off eBay. Then have them completely restored (they are going to need it anyway) with identical parts. Unrestored, singles can sell for in the $300 - $500 range. That would put them at or under the $1000 limit. Gerry |
Gingers 正式會員 221.xxx.xxx.68 |
2006-06-18 21:11 |
| [#16] Any Radio Craftsmen (RC) User here? Any Radio Craftsmen usere showed up here. My friend Richard gave me a hand to restore my pair of C500A. Without his help, the restoration won't come to a success. Thanks. Will report on :-)  |
Gingers 正式會員 221.xxx.xxx.68 |
2006-06-18 21:27 |
| [#17] Any Radio Craftsmen (RC) User here? Congratulation John! :) |
maxbliss888 正式會員 218.xxx.xxx.42 |
2006-06-18 22:50 |
| [#18] Any Radio Craftsmen (RC) User here? Hi John! I had experiance with Radio Craftsman RC2, C500 (mono only) and C500A before, but I already sold RC2 and C500, still have a pair of C500A left home! Recently, I have readed a article from a local magazine about the Radio Craftsman's family. Not surprised me that there are some mistakes founded in the article, but lack of detail information about the Radio Craftsman history. To aviod confusion and mis-understanding, I have summarized the history of Radio Craftsman as belows: Radio Craftsman founded by John Cashman since 1947. John Cashman worked in Hallicrafters Radio Company before he founded Radio Craftsman. Radio Craftsman was mainly focusing on development of home audio and television from late 40 to late 50's. Ed Miller and Sid Smith were two major engineers to work for Radio Craftsman during early 40's - mid 50's. Actually, Ed Miller is the founder of Sherwood and who leave Radio Craftsman before 1953 (This year he founded Sherwood and mainly focused on integrate amp and receiver). Sid Smith was the chief engineer of Marantz who left Radio Craftsman and joined Marantz in 1954. The major audio products from Radio Craftsman actually was not completely developed by Radio Craftsman, but mainly licensed by RCA and Western Electric! Most of the Radio Craftsman gear sound fast, clear and very transparent with fine body (thin but not thick and mellow body). The first Radio Craftsman combination was introduced in late 40's - Radio Craftsman RC-1 tuner preamp and RC-2 power amplifier. Radio Craftsman RC-2 is operated by 2 x 6V6 with 10 watts output, this power amp is licensed by RCA and designed by Ed Miller. Honestly speaking, the Radio Craftsman RC-2 does not sound too good to my ears, it has quite powerful and pressure tone. Sure it sounds very clear and fast to my ears, but not it does not have sweet and balancing tone. Sorry to say that is not my cup of tea! The second generation 6V6 amp is the Radio Craftsman C400, it has slightly smoother and sweeter with more detail tone if compared to Radio Craftsman RC-2, but sure it sounds much musical with better tone quality the Radio Craftsman in my limited understanding. Also, it only has 10 watts output also licensed by RCA. No question that the most popular Radio Craftsman amp in the family must be the C500 series. The first two generations of C500 was mostly worked by Sid Smith and licensed by Western Electric. We cannot say the Sid Smith is doing the design job on this power amp, because the basic layout is similar to Williamson circuit by the tag stated clear that was licensed by Western Electric in my limited understanding. The first generation C500 was introduced in 1951, it comes with a smooth corner Stancor output transformer. In 1952, smooth corner version replaced by the sharp corner version output. Radio Craftsman C500 is based on Williamson design which operated with 2 x KT66 output tube in triode but pure class A operation with 10 watt output. It has very natural sweet, clear and transparent tone. Honestly, it sounds much faster than Pilot even thinner body than Fisher. Honestly it sounds slightly lack of body to my ears. However, it has very clear, natural, realistic and transparent tone than many vintage and modern hi-fi amp in my understanding. The Radio Craftsman C500 replaced by C500A in 1953 and the same years Sid Smith left Radio Craftsman. I believe the Radio C500A is the final work of Sid Smith. The different between Radio Craftsman C500A is it has much higher plate voltage in triode class AB and the output increase to 15 watts per channel. It also has much large size choke than C500, it also licensed by Western Electric as well. The rectifier tube also changed to 5U4G instead of 5V4G. The final version is Radio Craftsman C550 and it replaced Radio Craftsman C500A in 1954. Honestly, the sound of Radio Craftsman C550 sounds slightly different than C500 and C550A, it has better body but not as transparent sweet and natural than C500 and C500A. The reason is simple, the C550 is operated in Ultra-linear instead of triode operation, the output also increase to 30 watt instead of 15 watts. The amplifier also used a B+ delayed turn-on via a slow warm-up, it required 60 seconds to preserve the cathodes on the KT-66s. FYI, Radio Craftsman C550 was not designed by Sid Smith, but actually designed by Bob Grodinski, this guy took over Sid smith work as Smith already left the company and joined Marantz in summer of 1954...! |
Pilotrol 正式會員 218.xxx.xxx.126 |
2006-06-19 10:29 |
| [#19] Any Radio Craftsmen (RC) User here? Pilotrol Very informative indeed!!!! Thanks a lot. My Radio Craftmens were restored and they opend voice tonight at Richard's workshop with the 27M pre amplifier. My pair of C500A in fact needs more time to run in. Both the power and output transformer need time to warm up and capacitors and the RMG resistors also need time to burn in. It was a complete restoration to meet the circuit. Even the four 100R varible attenuator (?) had been replaced for NOS quad. Grateful to Richard to give them a new life. I am using the MultiCap now. Will try vintage capacitors later. |
Gingers 正式會員 221.xxx.xxx.249 |
2006-06-19 22:26 |
| [#20] Any Radio Craftsmen (RC) User here? The Radio Craftsman C500 replaced by C500A in 1953 and the same years Sid Smith left Radio Craftsman. I believe the Radio C500A is the final work of Sid Smith. The different between Radio Craftsman C500A is it has much higher plate voltage in triode class AB and the output increase to 15 watts per channel. It also has much large size choke than C500, it also licensed by Western Electric as well. The rectifier tube also changed to 5U4G instead of 5V4G. -------------------------------------------- I think my pair is C500A as they use 5U4G. They are more than 54 years old. I recalled in 1953, Leak started to make closed frame version 12.1. In fact, I was excited to see their resurrection. Sometimes we think we are quite cruel, just never promise the vintage gears to retire :-) |
Gingers 正式會員 221.xxx.xxx.249 |
2006-06-19 22:37 |
