RE: RC-19 or RC-30

chungtat · 2nd August 2005, 09:03 AM

Hi,

I am newbie of tube amp. I was wondering which RCA manual to buy, RC-19 or RC-30? Does RC-30 covers tubes that mentioned in RC-19? I am looking for schematics and applications. Thanks.

Tom Bavis · 2nd August 2005, 01:23 PM

RC-30 is about twice the thickness, and I'm sure it has all the tubes that are in RC-19 plus the later ones. If you're looking for tube data and schematics, start here: http://www.audiophool.cjb.net/Techno.htm

chungtat · 5th August 2005, 01:56 AM

Thank you. I will buy RC-30.

PRR · 5th August 2005, 03:23 AM

I have 22, 23, and 30. They are 99% the same. Some of the very last tubes, like 8417, are in 30 but not in 22/23; being the last tubes they are not used in very many designs. RC22 has a little more info on the very old tubes like 2A3, and the very special tubes used in beach-radios and vibratorless car radios; but if you are working with old tubes you should know Frank's online data, and compare all the data-sheets available.

If you will only get one RC book, 30 is a good one to get.

EC8010 · 5th August 2005, 07:41 AM

I have both. I once found something in RC19 that was missing in RC30 but I can't remember what it was. I mostly use Frank's site, but the RCA books are very convenient.

Brian Beck · 5th August 2005, 03:25 PM

Frank's website is my second most used bookmark, after Google! I'm exaggerating perhaps, but it seems that a big chunk of my hard drive space is devoted to tube data sheets, many of which were downloaded from Frank. Whenever any tube is mentioned as even remotely related to audio, I download it. I guess I worry about the terrible day when Frank decides to drop his avocation. Meanwhile, thanks Frank!

Enzo · 6th August 2005, 03:51 AM

The RC30 has a lot more information in it. But it depends on what you are going to work on. Newer tubes like the 6550 and EL34 won't be in the older one. But if you want to fiddle with really old stuff, then RC19 might have a few more insights.

2nd August 2005, 09:03 AM	#1
chungtat diyAudio Member Join Date: Mar 2005 Location: HK	RE: RC-19 or RC-30 Hi, I am newbie of tube amp. I was wondering which RCA manual to buy, RC-19 or RC-30? Does RC-30 covers tubes that mentioned in RC-19? I am looking for schematics and applications. Thanks.

5th August 2005, 07:41 AM	#5
EC8010 diyAudio Moderator Join Date: Jan 2003 Location: Near London. UK	I have both. I once found something in RC19 that was missing in RC30 but I can't remember what it was. I mostly use Frank's site, but the RCA books are very convenient. __________________ The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...

5th August 2005, 03:25 PM	#6
Brian Beck diyAudio Member Join Date: Dec 2004 Location: South Florida, USA	A plug for Frank's website Frank's website is my second most used bookmark, after Google! I'm exaggerating perhaps, but it seems that a big chunk of my hard drive space is devoted to tube data sheets, many of which were downloaded from Frank. Whenever any tube is mentioned as even remotely related to audio, I download it. I guess I worry about the terrible day when Frank decides to drop his avocation. Meanwhile, thanks Frank! __________________ Brian

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2nd August 2005, 01:23 PM	#2
Tom Bavis diyAudio Member Join Date: Jun 2002 Location: Macedon NY	RC-30 is about twice the thickness, and I'm sure it has all the tubes that are in RC-19 plus the later ones. If you're looking for tube data and schematics, start here: http://www.audiophool.cjb.net/Techno.htm

5th August 2005, 01:56 AM	#3
chungtat diyAudio Member Join Date: Mar 2005 Location: HK	Thank you. I will buy RC-30.

5th August 2005, 03:23 AM	#4
PRR diyAudio Member Join Date: Jun 2003 Location: USA	I have 22, 23, and 30. They are 99% the same. Some of the very last tubes, like 8417, are in 30 but not in 22/23; being the last tubes they are not used in very many designs. RC22 has a little more info on the very old tubes like 2A3, and the very special tubes used in beach-radios and vibratorless car radios; but if you are working with old tubes you should know Frank's online data, and compare all the data-sheets available. If you will only get one RC book, 30 is a good one to get.

6th August 2005, 03:51 AM	#7
Enzo diyAudio Member Join Date: Sep 2004 Location: Lansing, Michigan	The RC30 has a lot more information in it. But it depends on what you are going to work on. Newer tubes like the 6550 and EL34 won't be in the older one. But if you want to fiddle with really old stuff, then RC19 might have a few more insights.

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