Lafayette Model 417

20grit · 11th May 2011, 08:25 PM

I've just picked up a Lafayette PA, model 417. It's a 90 watt system running (2) 6L6G power tubes, a 6J7 and a 6SC7 in the preamp. There is a 5y3G in there and a few other things i've not dug out yet. My google searches have turned up nothing. Has anyone ever seen one before, or better yet, have any experience with one? My intent is to convert this thing to guitar use.

Palustris · 12th May 2011, 03:58 PM

It can't be 90W RMS output from 2 6L6Gs. Even class B @ max plate voltage they are rated at 47W. Most likely the 90 Watts is the draw from the power line. The best thing to do is to replace all the capacitors, draw out the circuit and check all the voltages to make sure they appear correct.

firechief · 12th May 2011, 04:04 PM

Quote:

Originally Posted by Palustris

It can't be 90W RMS output from 2 6L6Gs. Even class B @ max plate voltage they are rated at 47W. Most likely the 90 Watts is the draw from the power line. The best thing to do is to replace all the capacitors, draw out the circuit and check all the voltages to make sure they appear correct.

This is true. Closer to 35 when all is done. But that is a lot of power. This could be an intresting conversion. Got Pictures?

20grit · 12th May 2011, 04:32 PM

I'll snap some pictures tonight. I was assuming 60 watts max out of the amp but the tag on the back says 90. I'm not sure where they're pulling the number from.
It's very puzzling that I can't find any manuals referencing the model number. It seems like every other Lafayette product out there is documented.

Cal Weldon · 12th May 2011, 04:34 PM

As Palustris says, 90 watts is very likely what the amp draws from the wall.

Palustris · 12th May 2011, 07:49 PM

Quote:

Originally Posted by 20grit

I was assuming 60 watts max out of the amp

Power out with max plate voltage for the 6L6G is 26.5W in class AB1.

The 90W is power consumption not output wattage.

11th May 2011, 08:25 PM	#1
20grit diyAudio Member Join Date: May 2011	Lafayette Model 417 I've just picked up a Lafayette PA, model 417. It's a 90 watt system running (2) 6L6G power tubes, a 6J7 and a 6SC7 in the preamp. There is a 5y3G in there and a few other things i've not dug out yet. My google searches have turned up nothing. Has anyone ever seen one before, or better yet, have any experience with one? My intent is to convert this thing to guitar use.

12th May 2011, 04:34 PM	#5
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	As Palustris says, 90 watts is very likely what the amp draws from the wall. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

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12th May 2011, 03:58 PM	#2
Palustris diyAudio Member Join Date: Aug 2006 Location: Cape Cod	It can't be 90W RMS output from 2 6L6Gs. Even class B @ max plate voltage they are rated at 47W. Most likely the 90 Watts is the draw from the power line. The best thing to do is to replace all the capacitors, draw out the circuit and check all the voltages to make sure they appear correct.

12th May 2011, 04:32 PM	#4
20grit diyAudio Member Join Date: May 2011	I'll snap some pictures tonight. I was assuming 60 watts max out of the amp but the tag on the back says 90. I'm not sure where they're pulling the number from. It's very puzzling that I can't find any manuals referencing the model number. It seems like every other Lafayette product out there is documented.

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