Power transformer quality differences

dsavitsk · 14th June 2006, 03:26 AM

Does anyone have an opinion on the importance of quality power transformers? I am working on a project that will use electra print transformers for output transformers, and I am wondering if it is worth the extra money to use an electra print power transformer as well, or if a hammond will be just as good?

agent.5 · 14th June 2006, 03:29 AM

check out those low dcr posts at audioasylum. apparently the answer is neither. the best are those $30 500va control transformers that you can bid on ebay any day.

kevinkr · 14th June 2006, 04:58 PM

I now use the 3XX series of Hammonds, the ones that have dual primaries and are specified for 50Hz use. These are about 30% larger than the comparable 2XX series, much quieter, (actually very quiet) and don't get very warm at all on 60Hz. Seem better put together in general. They aren't cheap, but they aren't too expensive relative to the custom types they are competing against.

I used to OEM all of the power transformers I used, but at least for conventional power transformers the 3XX series seem competitive.

14th June 2006, 03:26 AM	#1
dsavitsk diyAudio Member Join Date: Jan 2005 Location: Chicago	Power transformer quality differences Does anyone have an opinion on the importance of quality power transformers? I am working on a project that will use electra print transformers for output transformers, and I am wondering if it is worth the extra money to use an electra print power transformer as well, or if a hammond will be just as good?

14th June 2006, 04:58 PM	#3
kevinkr diyAudio Moderator Join Date: Sep 2004 Location: Boston, Massachusetts Blog Entries: 6	I now use the 3XX series of Hammonds, the ones that have dual primaries and are specified for 50Hz use. These are about 30% larger than the comparable 2XX series, much quieter, (actually very quiet) and don't get very warm at all on 60Hz. Seem better put together in general. They aren't cheap, but they aren't too expensive relative to the custom types they are competing against. I used to OEM all of the power transformers I used, but at least for conventional power transformers the 3XX series seem competitive. __________________ www.kta-hifi.net

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14th June 2006, 03:29 AM	#2
agent.5 diyAudio Member Join Date: Aug 2003 Location: San Francisco, CA	check out those low dcr posts at audioasylum. apparently the answer is neither. the best are those $30 500va control transformers that you can bid on ebay any day.

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