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Re: K-100-2 wireing [message #25575 is a reply to message #25574] |
Sun, 18 September 2016 22:39 ![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) |
chicagobill
Messages: 2005 Registered: April 2003
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Senior Member |
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The blue wire normally connects the grounding switches of the two jacks. The small cap is used as a low cut filter that creates the bright input.
Somebody didn't want the one input jack to be a bright jack, so they disconnected the cap and replaced it with a jumper.
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Re: K-100-2 wireing [message #25577 is a reply to message #25574] |
Sun, 18 September 2016 23:34 ![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) |
chicagobill
Messages: 2005 Registered: April 2003
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Senior Member |
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Yes, just put it back to normal by removing the jumper and reconnecting the blue wire and the cap.
I've heard people complain about the too bright sound of the K100-2. The input jacks are wired the same as the all of the K200 heads except for the PA heads. I don't know many people that need to use both inputs at the same time, where you would want both inputs to be normal.
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Re: K-100-2 wireing [message #25579 is a reply to message #25574] |
Mon, 19 September 2016 06:07 ![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) |
stevem
Messages: 4758 Registered: June 2004 Location: NY
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Senior Member |
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That cap really does not make for a brite input , as all that cap does is remove some low end.
I would guess that it was done that way so the guitars signal could be taped off either Jack to feed something else without stripping the bottom end away!
Only the k200b non PA heads have a true brite boost circuit that adds top end
[Updated on: Mon, 19 September 2016 06:11] Report message to a moderator
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Re: K-100-2 wireing [message #25581 is a reply to message #25574] |
Mon, 19 September 2016 11:57 ![Go to previous message Go to previous message](/FUDforum/theme/vk30/images/up.png) |
chicagobill
Messages: 2005 Registered: April 2003
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Senior Member |
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Yes, it does not actually boost the treble or brightness of the signal, I never said that it did. The reduction of the low frequencies will make the sound thinner or brighter because the ratio of highs and lows will be shifted, thus the "HIGH" and "LOW" input designations.
Placing a cap in series with the input signal is basically a first order low cut filter circuit. The value of the cap will limit the low frequency roll off point. The smaller the value the greater the roll off (less bass). This is what Rickenbacker used in the treble circuit of their guitars for years to get that jangle.
I never liked the wording "HIGH" and "LOW" as it is too confusing. A lot of amps including the later metalfront amps had inputs that were high and low, referring to gain and not tonality.
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