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Post by black335 on Feb 7, 2009 12:20:43 GMT -7
I know this topic has been touched on before...but...with the introduction of the new "brakelite(tm)" I was re-interested...what is the actual wattage of my Rt66? ...and more importantly, could the "brakelite(tm)" handle it?
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Post by benttop (Steve) on Feb 7, 2009 13:12:56 GMT -7
I know this topic has been touched on before...but...with the introduction of the new "brakelite(tm)" I was re-interested...what is the actual wattage of my Rt66? ...and more importantly, could the "brakelite(tm)" handle it? Go with what the Doc says they are. His ratings are conservative, using RMS wattage, not peak. Same goes for the Brake Lite, so there's a correlation - seems to me it would be safe, unless the Doc says otherwise. Seems I saw him say it would work for the RXES which is a very loud amplifier....
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Post by Deleted on Feb 8, 2009 8:50:15 GMT -7
what is the actual wattage of my Rt66? 40watts
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Post by benttop (Steve) on Feb 8, 2009 10:37:19 GMT -7
what is the actual wattage of my Rt66? 40watts Hmmm.. The Z web site says 32 watts.
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Post by stuey222 on Feb 8, 2009 10:47:35 GMT -7
I know Myles has touched this many times before. Maybe he could write up a post and sticky it or we could add the RMS and peak wattage to the chart that you wrote up Steve, and get that stickied.
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Post by benttop (Steve) on Feb 8, 2009 11:06:08 GMT -7
I guess my point is that if Dr. Z says the Rt 66 is 32 watts, and Dr. Z says his Brake Lite will tolerate up to 45 watts, they are most likely the same kind of watts, regardless which form of measurement we're talking about.
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Post by Deleted on Feb 8, 2009 22:39:53 GMT -7
Hmmm.. The Z web site says 32 watts. I certainly won't argue with ya' there In the early days of the forum someone posted some tube recommendations for the Route 66 they had found from Mike Z. at the gear forum. drzamplifiers.proboards41.com/index.cgi?board=route&action=display&thread=2552. In there Doc says, "Finally V5- To get the full 40 watts at clip you must use a New Sovtek or Mullard GZ-34. If you have an older RT.66 it may have a Chinese 5AR4/GZ-34 Those were the only ones being built in 1998, replace it before it goes nuclear like they all will in less then 5 years of use." You'll find the post about half way down in the link.
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Post by Deleted on Feb 8, 2009 22:41:37 GMT -7
I guess my point is that if Dr. Z says the Rt 66 is 32 watts, and Dr. Z says his Brake Lite will tolerate up to 45 watts, they are most likely the same kind of watts, regardless which form of measurement we're talking about. +1
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Post by Phil (aka Phil) on Feb 10, 2009 5:08:54 GMT -7
The Delta 88 is "rated" at 88 watts but mine equipped with KT88SV #6's and biased at 50mA is putting out over 110 watts... I know that even as biased a little lower as it came from the factory it's making over 100W easily....
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Post by benttop (Steve) on Feb 10, 2009 6:35:33 GMT -7
The Delta 88 is "rated" at 88 watts but mine equipped with KT88SV #6's and biased at 50mA is putting out over 110 watts... I know that even as biased a little lower as it came from the factory it's making over 100W easily.... ...so you better not use the Brake Lite with it.
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Post by jbgtr on Feb 10, 2009 6:56:02 GMT -7
It has been mentioned before that most wattage ratings are very conservative. That being said to determine the maximum wattage, divide the RMS wattage by .707. So for instance, the KT-45 at 45 watts divided by .707 = 63.65 watts. Using a better rectifier or an SS rectifier would add a few extra watts.
Doc posted the other day, and I believe he said not to use the brake lite with the EZG, KT-45, SRZ-65, but I don't remember there being mention of the RT-66
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Post by Phil (aka Phil) on Feb 10, 2009 12:01:52 GMT -7
It has been mentioned before that most wattage ratings are very conservative. That being said to determine the maximum wattage, divide the RMS wattage by .707. So for instance, the KT-45 at 45 watts divided by .707 = 63.65 watts. Using a better rectifier or an SS rectifier would add a few extra watts. That's true, but there's always other things that go into wattage ratings like what percent distortion you're rating the amp at. I guess guitar amps aren't like hi-fi in that regard. ;D Funny wattage story from back in the day: Back when I was into high end car audio some guy came into LA Sound with a dead subwoofer amp (Pyramid or similar manufacturer) that was rated at 800W. We kind of laughed (not to his face) and suggested a nice Precision Power 150W bridgeable amp that was stable at 1 ohm. At first he protested mightily; how could a 150W amp be anything like his 800W one? Needless to say the 150W amp bridged mono made thunderous, much tighter bass than the old amp... so much that the customer laughed out loud. We decided that the old 800W amp was rated on the test bench with a 30V signal into 0 ohms while being struck by lightning and that they got the measurement right before the amp blew up.
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