K200B-6 [message #27505] |
Mon, 16 September 2019 11:08 ![Go to next message Go to next message](/FUDforum/theme/vk30/images/down.png) |
aeroboy47
Messages: 15 Registered: September 2019
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Junior Member |
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Amp makes loud pop when powered on. Other than that it works fine. Have checked numerous voltages and all are good according to schematic. If anyone has had a similar problem corrected, I would love to hear about it.
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Re: K200B-6 [message #27515 is a reply to message #27505] |
Thu, 26 September 2019 16:08 ![Go to previous message Go to previous message](/FUDforum/theme/vk30/images/up.png) ![Go to next message Go to next message](/FUDforum/theme/vk30/images/down.png) |
rodak
Messages: 514 Registered: October 2001 Location: Georgia
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Senior Member |
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Do the 2N3055s need to be "matched" in any way, or is that non-critical?
www.combo-organ.com
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Re: K200B-6 [message #27655 is a reply to message #27516] |
Mon, 10 February 2020 15:49 ![Go to previous message Go to previous message](/FUDforum/theme/vk30/images/up.png) ![Go to next message Go to next message](/FUDforum/theme/vk30/images/down.png) |
rodak
Messages: 514 Registered: October 2001 Location: Georgia
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Senior Member |
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(Catching up on my reading here)
Steve, how do you go about matching a pair of 2N3055s for he output stage?
www.combo-organ.com
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Re: K200B-6 [message #27657 is a reply to message #27505] |
Tue, 11 February 2020 10:36 ![Go to previous message Go to previous message](/FUDforum/theme/vk30/images/up.png) ![Go to next message Go to next message](/FUDforum/theme/vk30/images/down.png) |
rodak
Messages: 514 Registered: October 2001 Location: Georgia
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Senior Member |
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Thanks, Steve. I think I actually have a matching rig I built a long time ago to test/match some power transistors in my Krossroad 500 head. I'll have to dig that out and post the schematic here to see if that's what you're talking about. Or do you have a link to a suitable rig I could compare it to?
www.combo-organ.com
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Re: K200B-6 [message #27659 is a reply to message #27505] |
Wed, 12 February 2020 05:54 ![Go to previous message Go to previous message](/FUDforum/theme/vk30/images/up.png) |
stevem
Messages: 4758 Registered: June 2004 Location: NY
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Senior Member |
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If you've made a rig that can do matching for the 500 then your set !
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