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I have a Toshiba datasheet for the 2sc2879 open in front of me right now. Binrat is correct, 100 watt output. Here is a link if anyone wants to see for themselves. Input is listed at 6 watts typical, and 10 watts maximum per chip. So amp manufacturers are having people run astronomical amounts of power into these transistors. 40 watts should be the maximum drive assuming they don't have an attenuator of some sort built in the amp. Anyone think there is an attenuator in the amps sold by any of the big name amp sellers? Also looking at how hard they suggest driving these things... The one that X-Force recommends running to drive Roadrage's amp has an advertised and false output of 240 watts. 150 watts is a more realistic output, and is still almost 4 times the manufacturers of the bipolar transistors specifications for this amp.

Roadrage is correct when he said the amp is being pushed hard. It is obvious what caused the issue, and SWR was not it.

When used properly these transistors are used to 13 db (about 20 times) gain. The way they are advertised as being used they get maybe 6 db (about 4 times) gain. They are being pushed way beyond spec. They generate tons of excess heat. I would love to hook one up to a spectrum analyzer, I bet they are splattering all over the place...

The DB

<blockquote data-quote="The DB" data-source="post: 387999" data-attributes="member: 21346">I have a Toshiba datasheet for the 2sc2879 open in front of me right now.&nbsp; Binrat is correct, 100 watt output.&nbsp; <a href="http://pdf1.alldatasheet.com/datasheet-pdf/view/30139/TOSHIBA/2SC2879.html" target="_blank">Here is a link if anyone wants to see for themselves.</a>&nbsp; Input is listed at 6 watts typical, and 10 watts maximum per chip.&nbsp; So amp manufacturers are having people run astronomical amounts of power into these transistors.&nbsp; 40 watts should be the maximum drive assuming they don&#039;t have an attenuator of some sort built in the amp.&nbsp; Anyone think there is an attenuator in the amps sold by any of the big name amp sellers?&nbsp; Also looking at how hard they suggest driving these things...&nbsp; The one that X-Force recommends running to drive Roadrage&#039;s amp has an advertised and false output of 240 watts.&nbsp; 150 watts is a more realistic output, and is still almost 4 times the manufacturers of the bipolar transistors specifications for this amp.Roadrage is correct when he said the amp is being pushed hard.&nbsp; It is obvious what caused the issue, and SWR was not it.When used properly these transistors are used to 13 db (about 20 times) gain.&nbsp; The way they are advertised as being used they get maybe 6 db (about 4 times) gain.&nbsp; They are being pushed way beyond spec.&nbsp; They generate tons of excess heat.&nbsp; I would love to hook one up to a spectrum analyzer, I bet they are splattering all over the place...The DB</blockquote>

[QUOTE="The DB, post: 387999, member: 21346"] I have a Toshiba datasheet for the 2sc2879 open in front of me right now. Binrat is correct, 100 watt output. [URL="http://pdf1.alldatasheet.com/datasheet-pdf/view/30139/TOSHIBA/2SC2879.html"]Here is a link if anyone wants to see for themselves.[/URL] Input is listed at 6 watts typical, and 10 watts maximum per chip. So amp manufacturers are having people run astronomical amounts of power into these transistors. 40 watts should be the maximum drive assuming they don't have an attenuator of some sort built in the amp. Anyone think there is an attenuator in the amps sold by any of the big name amp sellers? Also looking at how hard they suggest driving these things... The one that X-Force recommends running to drive Roadrage's amp has an advertised and false output of 240 watts. 150 watts is a more realistic output, and is still almost 4 times the manufacturers of the bipolar transistors specifications for this amp. Roadrage is correct when he said the amp is being pushed hard. It is obvious what caused the issue, and SWR was not it. When used properly these transistors are used to 13 db (about 20 times) gain. The way they are advertised as being used they get maybe 6 db (about 4 times) gain. They are being pushed way beyond spec. They generate tons of excess heat. I would love to hook one up to a spectrum analyzer, I bet they are splattering all over the place... The DB [/QUOTE]

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